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Cyberair

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November 2018
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STULZ the natural choice Operating Instructions CyberAir Precision Air Conditioning Units ASD/U, ALD/U 380-415/3/50 Index 12 Issue 7.06 Contents Safety instructions .........................................................................................................8 1. Type code ..................................................................................................................10 2. Description ................................................................................................................16 2.1 Intended use ....................................................................................................................................16 2.2 Design of the A/C unit .....................................................................................................................16 2.3 Basic components/function of refrigerant circuit ..............................................................................17 2.4 Cooling water circuit (G, GCW, GE1, GE2) .....................................................................................18 2.5 Chilled water circuit (CW, CW2, ACW, GCW) .................................................................................18 3. Refrigerant circuit .....................................................................................................19 3.1 Cooling system A ............................................................................................................................20 3.2 Cooling system G ............................................................................................................................21 3.3 Cooling system GE1 ........................................................................................................................22 3.4 Cooling system GE2 ........................................................................................................................23 3.5 Cooling system CW .........................................................................................................................24 3.6 Cooling system CW2 .......................................................................................................................25 3.7 Cooling system ACW.......................................................................................................................26 3.8 Cooling system GCW ......................................................................................................................27 4. Technical data ...........................................................................................................28 4.1 Application limits ..............................................................................................................................28 4.2 Technical Data - ASD/U ... A/G/GE1/ACW/GCW - 1-circuit .............................................................29 4.3 Technical Data - ASD/U ... A/G/GE1/ACW/GCW - 2-circuits ...........................................................30 4.4 Technical Data - ALD/U ... A/G/GE2 - 1-circuit ................................................................................31 4.5 Technical Data - ALD/U ... A/G/GE2 - 2-circuits ..............................................................................32 4.6 Technical Data - ASD/U ... CW ........................................................................................................33 4.7 Technical Data - ASD/U ... CW2 ......................................................................................................33 4.8 Dimensions ......................................................................................................................................34 4.9 Weights ............................................................................................................................................34 4.10 Electrical Data - 400V / 3ph / 50Hz ...............................................................................................35 4.11 Dimensional drawings ...................................................................................................................36 4.11.1 Cabinet size 1.........................................................................................................................36 4.11.2 Cabinet size 2.........................................................................................................................37 4.11.3 Cabinet size 3.........................................................................................................................38 4.11.4 Cabinet size 4.........................................................................................................................40 4.11.5 Cabine size 5..........................................................................................................................42 5. Transport / Storage ...................................................................................................44 5.1 Delivery of units ...............................................................................................................................44 5.2 Transport..........................................................................................................................................44 5.3 Storage ............................................................................................................................................44 6. Installation .................................................................................................................45 6.1 Positioning .......................................................................................................................................45 6.2 Air side connection (optional) ..........................................................................................................45 6.3 Connection of the piping ..................................................................................................................47 6.3.1 Version D - Downﬂow ...............................................................................................................47 6.3.1.1 Version A ...........................................................................................................................47 6.3.1.2 ACW - Version ...................................................................................................................48 6.3.1.3 G - Version.........................................................................................................................49 6.3.1.4 GCW - Version...................................................................................................................51 6.3.1.5 GE1 - Version ....................................................................................................................52 6.3.1.6 GE2 - Version ....................................................................................................................52 6.3.1.7 Pipe entrance area - Downﬂow version - DX.....................................................................53 6.3.1.8 CW / CW2 - Version ..........................................................................................................56 6.3.1.9 Pipe entrance area - Downﬂow version - CW....................................................................57 E/0706/12/3 6.3.2 Version U - Upﬂow ....................................................................................................................59 6.3.2.1 Version A ...........................................................................................................................59 6.3.2.2 Version ACW .....................................................................................................................60 6.3.2.3 Version G ...........................................................................................................................61 6.3.2.4 Version GCW .....................................................................................................................63 6.3.2.5 Version GE1 ......................................................................................................................64 6.3.2.6 Version GE2 ......................................................................................................................64 6.3.2.7 Version CW / CW2.............................................................................................................65 6.3.2.8 Pipe entrance area - Upﬂow units (DX + CW) ...................................................................66 6.3.3 Refrigerant Piping.....................................................................................................................67 6.3.3.1 Selection of hot gas and liquid line ........................................................................................68 6.3.3.2 Installation instructions for routing refrigerant-conducting pipes ...........................................71 6.3.3.3 Basic principles for evacuating refrigerant systems ..............................................................74 6.3.3.4 Instructions on ﬁlling systems with R22 and R407C refrigerants ..........................................77 6.3.4 Water piping .............................................................................................................................78 6.3.5 Condensate drain connection...................................................................................................80 6.4 Electrical connection ......................................................................................................................81 7. Commissioning .........................................................................................................84 8. Maintenance ..............................................................................................................86 8.1 Safety instructions ...........................................................................................................................86 8.2 Maintenance intervals .....................................................................................................................86 8.3 Refrigerant circuit ............................................................................................................................87 8.4 Air circuit ..........................................................................................................................................88 8.5 Water circuit .....................................................................................................................................89 8.6 Unit in general .................................................................................................................................89 8.7 Competences ..................................................................................................................................89 9. Dismantling and disposal ........................................................................................90 10. Options ....................................................................................................................91 10.1 Steam humidiﬁer ...........................................................................................................................91 10.1.1 Description .............................................................................................................................91 10.1.2 Technical data.........................................................................................................................91 10.1.3 Supply connections ................................................................................................................92 10.1.4 Commissioning .......................................................................................................................93 10.1.5 Operation................................................................................................................................94 10.1.6 Maintenance ...........................................................................................................................97 10.1.7 Malfunction causes / Remedy ................................................................................................98 10.2 Reheat .........................................................................................................................................101 10.3 Raised ﬂoor stand .......................................................................................................................103 10.4 Air side connection ......................................................................................................................106 10.4.1 Unit base ..............................................................................................................................106 10.4.2 Filter base.............................................................................................................................108 10.4.3 Duct ......................................................................................................................................109 10.4.4 Discharge plenum ................................................................................................................110 10.4.5 Bag ﬁlter top .........................................................................................................................111 10.4.6 Sound insulation plenum ......................................................................................................113 10.4.7 Adapter plate with damper or ﬂexible connection .................................................................114 10.5 Waterside connection ..................................................................................................................117 10.5.1 3-way-cooling water control valve.........................................................................................117 10.5.2 2-way-cooling water control valve.........................................................................................117 11. Customer service .................................................................................................118 E/0706/12/4 © STULZ GmbH, Hamburg Modiﬁcations to issue 3.06 Technical Data - modiﬁed: the sound pressure level of the units ASD/U 960, 1100, 1200, 1500 CW Options - added: duct top view E/0706/12/5 E/0706/12/6 These operating instructions are to be read carefully and complied with before installing and operating the A/C unit. The male triangular wrench and brief operating instructions are to be displayed in a visible location in the immediate vicinity of the A/C unit. It is absolutely essential to comply with the measures listed in the chapter giving safety instructions. The A/C units have an air conditioning system which contains refrigerant. Compressor Phase Rotation! The scroll compressor is dependent on correct phase rotation. The scroll compressor will be checked at the factory before dispatch. On site, if the rotating ﬁeld of the compressor is incorrect, it must be corrected by changing two phases of the power supply at the isolator. An inverse rotating ﬁeld can be detected by a raised compressor noise level and results in overheating and destruction of the compressor after several hours of operation. E/0706/12/7 Safety instructions General These operating instructions contain basic information which is to be complied with for installation, operation and maintenance. They must therefore be read and complied with by the ﬁtter and the responsible trained staff/operators before assembly and commissioning. They must be permanently available at the place where the system is used. R407C refrigerants are used in STULZ A/C units. Refrigerants are volatile, or highly volatile ﬂuorinated hydrocarbons which are liqueﬁed under pressure. They are incombustible and not hazardous to health when used as intended. First aid measures - If health problems occur during or after handling ﬂuorinated hydrocarbons, a doctor is to be consulted immediately. The doctor is to be informed that the work involved the use of ﬂuorinated hydrocarbons. In the case of acute effects, the casualty is to be brought into the fresh air as quickly as possible. The casualty must never to be left unsupervised. If the casualty is not breathing, initiate mouth-to-mouth resuscitation immediately. If the casualty is unconscious or very dazed he or she must not be given any liquid. Splashes of ﬂuorinated hydrocarbons in the eyes can be blown out or fanned out by an assistant. Then rinse with water. - Notes for the doctor: Do not give any preparations from the adrenalin ephedrine group (nor any noradrenaline) to treat shock. Attain further information from the poison accident centres. Handling refrigerants The following measures are to be complied with when handling refrigerants: - Refrigerants have a narcotic effect when inhaled in high concentrations. - Safety glasses and safety gloves are to be worn. - Do not eat, drink or smoke at work. - Liquid refrigerant must not get onto the skin (risk of burns). - Only use in well ventilated areas. - Do not inhale refrigerant vapours. - Warn against intentional misuse. - It is absolutely essential to comply with the ﬁrst aid measures if accidents occur. Installation of refrigerant systems It is absolutely essential to comply with the following measures when installing refrigerant systems: - Pressure-test the system with nitrogen - Eliminate leaks in refrigerant systems immediately. - Do not allow refrigerant to escape in to the atmosphere during ﬁlling and repair work. - Ensure extraction or good ventilation in enclosed areas. - The room is to be evacuated immediately if high concentrations of refrigerant suddenly occur. The room may only be entered again after adequate ventilation. - If unavoidable work is required in the presence of a high concentration of refrigerant, breathing apparatus must be worn. This does not mean simple ﬁlter masks. Comply with breathing protection E/0706/12/8 - data sheet. The refrigerant is to be extracted before soldering and welding work on refrigerant systems. Only carry out welding and soldering work on refrigerant systems without refrigerant in properly ventilated areas. If there is a pungent odour, the refrigerant has decomposed due to overheating. Leave the room immediately. The room may only be entered after proper ventilation or only with a ﬁlter mask for acidic gases. Refrigerants containing FCs contribute to the global warming and with this to climate changes. The FCs must therefore be disposed of in accordance with the regulations, i.e. only by companies specially qualiﬁed under § 191 of the water resources management law and licensed as recognised disposal companies for refrigerants. Personnel qualiﬁcation and training The personnel responsible for operation, maintenance, inspection and assembly must have the appropriate qualiﬁcations for this work. Hazards resulting from non-compliance with the safety instructions Non-compliance with the safety instructions can endanger personnel and the system. Non-compliance with the safety instructions result in the forfeiture of any claims for damage. Safety-conscious work The safety instructions listed in these operating instructions, national regulations in force on accident prevention, as well as company work, operating and safety instructions must be complied with. Safety instructions on maintenance, inspection and assembly work The operator must ensure that all maintenance, inspection and assembly work is carried out by authorised and qualiﬁed specialist staff who have made an in-depth study of the operating instructions. Work on the system is only to be carried out when it is shut down. It is absolutely essential to comply with the procedure for shutting down the system described in the operating instructions. Before maintenance work, the A/C unit must be switched off at the master switch and a warning sign displayed to prevent unintentional switching-on. The master switch must be checked to ensure the A/C unit is in the de-energized state. The preliminary measures in the "Installing/commissioning" section are to be complied with before recommissioning. Independent conversion and manufacture of replacement parts The system may only be converted or modiﬁed after consultation with STULZ. Original replacement parts and replacement parts/accessories authorised by STULZ are an aid to safety. Unacceptable operating methods The operating safety of the system is only guaranteed when it is used as intended (see operating instructions, page 16). The limit values stipulated in the technical data must not be exceeded under any circumstances. E/0706/12/9 1. Type code The type code represents the unit variant of your A/C unit and can be found on the rating plate. 2004 Unit type Serial no. internal part no. ASD 431 A The rating plate is located in the door in front of the electrical compartment. Explanation A Unit variants S Product range Energy index Airﬂow direction Output of unit in kW Number of refrigeration circuits Cooling system: A: air-cooled G: water/glycol-cooled GE: glycol-cooled + free cooling D 35 1 A CW: chilled water cooling (directly) A,G, GE, GE2, CW, ACW, GCW, CW2 1, 2 171 ... 1500 D, U - Downﬂow, Upﬂow S, L - Standard, Low energy A = CyberAir Page code E / 0306 / 12 / 7 Page code: D - German E - English F - French U - US English E/0706/12/10 Date of issue month/year Index number Page number Unit variants The different versions of the CyberAir product range are deﬁned by the energy index, the airﬂow direction, the unit capacity, the number of refrigerant circuits and the way of cooling system. The units of the CyberAir product range exist in 5 different cabinet sizes with different width, to which speciﬁc features adhere as far as the heating and humidiﬁer equipment is concerned. Size 1 2 3 4 5 Energy index (S/L) The L version differs from the S version by larger cabinet sizes at the same capacity. This way the heat transfer at the coil is improved which allows to reduce the airﬂow. In addition to the reduced airﬂow, the pressure loss at the airside reduces by the bigger heat exchanger surface, and so does the sound pressure level. A quick overview on the shifting of cabinet sizes from S to L is given by the following table : S A / G / GE1 / ACW / GCW L A / G /GE2 Cab. size Baugröße 1 2 3 4 5 Cab. size Baugröße 2 3 4 5 1-kreisig 1 circuit 171 201 241 301 351 - 431 521 - 661 791 - - 1-kreisig 1 circuit 171 201 241 301 351 - 431 521 - 661 791 - 22-kreisig circuits 222 - 272 332 442 482 602 692 852 1052 22-kreisig circuits 222 - 272 332 442 482 602 692 The unit types CW and CW2 only exist in the S version, as the sound level in these units, with the fan as the only source of sound, is already low. E/0706/12/11 Air ﬂow (D/U) A distinction is made between downﬂow and upﬂow A/C units in respect of air ﬂow. On downﬂow units the room air is drawn in to the A/C units from above and passed down into the raised ﬂoor void. On upﬂow units the room air is drawn in from the front side of the A/C unit and passed upwards. Downﬂow Upﬂow room / return air supply air room / return air supply air Number of refrigerant circuits (1/2) The CyberAir units exist with either one or two refrigerant circuits. This concerns the cooling systems A, ACW, G, GCW GE1 and GE2. The two-circuit units are equipped with two refrigerant circuits which are nearly identical with the sole exception that only the ﬁrst circuit contains a dehumidifying circuit. Also the optional suction throttle and the optional hotgas bypass are only included in the ﬁrst circuit. The two-circuit G-, GCW-, GE1- and GE2-units only have one water circuit which contains - except two condensers - the same number of components as the single circuit version. All ACW-, GCW- and GE-units contain only one free cooling CW/GE-coil. Please consider that the max. available pressure at the airside is reduced by double heat exchanger coils. The CW-units, which contain no refrigerant circuit, therefore include consequentially a zero behind the capacity indication in the type code. However, there is a version with two separate cooling circuits (CW2). The two chilled water circuits are connected to two different chillers and secure an improved operation reliability this way. E/0706/12/12 A-system The air-cooled (A) direct expansion (DX) system uses refrigerant as the heat transfer medium. Room air re-circulates through the internally mounted CyberAir unit which houses the evaporator coil, scroll compressor and refrigeration system. A remotely mounted aircooled condenser is connected, by specialist installers, to the room unit via a sealed refrigeration circuit such that the absorbed room heat load can be rejected to atmosphere. G-system The glycol/water cooled (G) version utilises the same refrigeration system as the type-A CyberAir unit and room air re-circulates through an evaporator coil. However an internally mounted plate condenser is then used to transfer the room heat load to a glycol solution. This condenser water acts as a secondary heat transfer medium, which is then pumped to a remotely mounted air-cooled drycooler or cooling tower where the heat is ﬁnally rejected to atmosphere. Generally the condenser water system is in the form of a ring main connected in parallel to a number of stand-alone CyberAir units mounted in the critical space. GE1-system The room air is drawn through both the free cooling coil and the evaporator. In summer operation with high external temperatures, the evaporator absorbs heat from the room air and transfers it to the refrigerant. In the plate condenser a heat exchange between the refrigerant and the water/glycol takes place. With low outside temperatures the free cooling coil transfers the heat directly to the water/glycol. The water/glycol is conveyed to the drycooler by an external pump and two installed 3-wayvalves controlled by the C7000. The drycooler rejects the heat to the outside air. The A/C unit and the external drycooler are connected with each other by a sealed water/glycol circuit. E/0706/12/13 GE2-System The room air is drawn through both the free cooling coil and the evaporator. In summer operation with high external temperatures, the evaporator absorbs heat from the room air and transfers it to the refrigerant. In the plate condenser a heat exchange between the refrigerant and the water/glycol takes place. With low outside temperatures the free cooling coil transfers the heat directly to the water/glycol, which is conveyed through the unit by two integrated pumps speed-controlled by the C7000. For this reason the A/C unit has no water-side pressure loss. A small external pump conveys the water/ glycol through the pipework to the drycooler, which rejects the heat to the outside air. The A/C unit and the external drycooler are connected with each other by a sealed water/glycol circuit. CW-System When a central chilled water system, such as the Stulz CyberCool, is the appropriate method of heat rejection, CyberAir units are available in a packaged fan-coil design. Room air is recirculated through the CyberAir cooling coil, which transfers the heat load directly into the chilled water ring main. Water ﬂow rate is regulated by a 2 or 3-way chilled water valve, controlled by the CompTrol 7000, to precisely maintain conditions in the critical space. CW2-System The CyberAir unit in CW2 has two independent cooling coils and control valves and can take chilled water from two independent systems. The system can provide added back up and security. A typical application is to use the central building chilled water system as the primary chilled water source with a STULZ CyberCool chiller as the secondary chilled water source to operate when the central system is not available for example at weekends or overnight. E/0706/12/14 ACW-System The ACW CyberAir system is a combination of both the ”A” and ”CW” systems with two cooling coils. The CompTrol 7000 manages the ACW system to allow the air cooled ”A” system to operate as standby to the ”CW” chilled water system or vice versa to give added security and back up to the computer room. GCW-System The GCW CyberAir system is a combination of both the ”G” and ”CW” systems with two cooling coils. The CompTrol 7000 manages the GCW system to allow the glycol cooled or condenser water ”G” system to operate as standby to the ”CW” chilled water system or vice versa to give added security and back up to the computer room. E/0706/12/15 2. Description 2.1 Intended use This A/C unit is used to control room temperature and air humidity. The A/C unit is designed for indoor installation. Any use beyond this is not deemed to be use as intended. STULZ is not liable for any damage resulting from such misuse. The operator alone bears the risk. 2.2 Design of the A/C unit The A/C unit is exclusively operated by the controller in the front panel and the main switch in the electric box. All the electrics to control and monitor the A/C unit is located in the electric box which is placed in the upper half of the unit front side. All the wiring of the A/C unit comes together in the electrical section and is connected here. electrical box The heat exchangers extend to the entire unit width. The refrigerant circuit with all his components is located in the bottom part of the unit. The compressors are situated in a separate housing. Low noise and energysaving EC-fans (EC - electronically commutated) generate the airﬂow. Each unit exists as an Upﬂow- and Downﬂow version, the essential difference of which, in contribution to the airﬂow direction, consists in the relative position of the heat exchanger to the fans, as can be seen opposite. Downﬂow unit electrical box The A/C unit control is effected by the on board I/O controller. The operational conception is designed such as to allow to control up to 31 units from one unit. These units can be installed separately with a maximum control line length of 1000 m. The supply connections (electrical power supply and pipe connections) are conducted to the bottom at Downﬂow units and to the side at Upﬂow units as standard. Upﬂow unit E/0706/12/16 The function principle of the A/C unit consists of the fact that the refrigerant circuit takes heat energy from the room air which is then conducted by the refrigerant and in units of the G, GCW, GE1, GE2 version via a subsequent water circuit to the external air. 2.3 Basic components/function of refrigerant circuit The refrigeration circuit consists of a compressor, a condenser, an expansion valve and an evaporator. In units of the G, GCW, GE1, GE2 version, these components are connected by pipelines to a sealed refrigerant circuit. In units of the A, ACW version, an external air-cooled condenser must be connected to the open refrigerant circuit of the unit. The compressor is used to compress the refrigerant and maintain the refrigerant ﬂow. The gaseous refrigerant is compressed in the compressor to approx. 20 bar at approx. 70°C and enters then the condenser. The condenser gives up the heat absorbed and liqueﬁes the refrigerant which is under high pressure. The refrigerant temperature drops down to approx. 40°C in the condenser. The liquid refrigerant enters the expansion valve and is from there conducted back to the evaporator at low pressure (about 6 bar) and low temperature (about 10°C). The heat of the air is absorbed by the gaseous low temperature refrigerant in the evaporator at an evaporation temperature of about 10°C. All components of the refrigerant circuit are designed for a maximum operating pressure of 28 bar. Dehumidifying circuit To achieve a dehumidiﬁcation for the DX-units with cabinet size 1 and all CW-units, the fan speed is reduced. For the DX-units of cabinet size 2-5, approximately one third of the evaporator is isolated via a solenoid valve to achieve a dehumidiﬁcation by passing below the dew point. As a result the evaporating pressure and temperature of the refrigerant reduces and the air ﬂowing through the evaporator coil falls below the dew point. The moisture contained in the air condenses on the evaporator and is carried away. Preventative safety devices The A/C units have various safety devices to avoid malfunctions. In the liquid line there is a ﬁlter drier to separate humidity and a sight glass to check the sufﬁcient charge of refrigerant. A/ACW-units are also equipped with a solenoid valve in the liquid line which shuts off the refrigerant ﬂow when the A/C unit is shut down. Safety devices The refrigerant circuit is protected against insufﬁcient operating pressure by a low-pressure switch. If the operating pressure is fallen below, a warning signal appears on the display and the unit is put out of operation. A high-pressure switch is triggered at 24.5 bar and switches off the compressor. A warning signal on the display of the controller appears. A liquid receiver and a safety valve, which releases refrigerant at 27,5 bar, are ﬁtted on A/ACW-units as further protection. E/0706/12/17 2.4 Cooling water circuit (G, GCW, GE1, GE2) In G- and GCW units, the cooling water circuit contains a plate condenser as interface to the refrigerant circuit and two valves for ﬁlling and draining. In GE1 units the water circuit contains additionally a direct cooling coil, a 3-way GE valve, which controls by means of a temperature sensor at the water inlet the distribution of the water ﬂow through the free cooling coil and the condenser and an electronically controlled 3-way cooling water control valve, which is controlled by the condenser pressure by means of a pressure sensor at the refrigerant side. This valve controls the distribution of the water ﬂow through the condenser and the bypass. In GE2 units the distribution of the water ﬂow through the free cooling coil and the condenser is taken on by two speed controlled pumps (one for the condenser and one for the free cooling coil). The pump control factor in the condenser circuit is the condenser pressure on the refrigerant side. The pump control factor for the GE-coil is the temperature at the water inlet. 2.5 Chilled water circuit (CW, CW2, ACW, GCW) The chilled water circuit consists of a direct cooling coil, a 3-way valve, by which the cooling capacity is controlled and ﬁlling and vent valves. The CW2 version contains two separate chilled water circuits. The 3-way valve is controlled by the incorporated C7000 controller. 2-circuit Downﬂow unit of the GE2 version pump upstream plate condenser compressor 1 compressor 2 E/0706/12/18 pump upstream the free cooling coil condenser 3. Refrigerant circuit Legend PS- Low pressure switch Expansion valve PS+ High pressure switch Filter drier PC Pressure sensor Sight glass TIC Temperature sensor with indication 2-way solenoid valve TC Temperature sensor Angle valve Stop valve Pressure relief valve Schrader valve 3-way cooling water control valve Non-return valve Filling and drain valve Motor ball valve E/0706/12/19 3.1 Cooling system A 1 - circuit Receiver (>1000mm) Evaporator Fan Compressor EC PS- 2 - circuit Receiver 1 Evaporator 1 (>1000mm) Compressor 1 PS- Receiver 2 Evaporator 2 Fan EC Compressor 2 PS- E/0706/12/20 PS+ PS+ PS+ 3.2 Cooling system G 1 - circuit Option f(PC1,2) Condenser Evaporator (>1000mm) EC PS+ PS- Fan PC1 Compressor 2 - circuit Option f(PC1,2) Evaporator 1 Condenser 1 (>1000mm) PS- PS+ PC1 Compressor 1 Evaporator 2 Condenser 2 EC Compressor 2 Fan PC1 PS- PS+ E/0706/12/21 3.3 Cooling system GE1 1 - circuit Free cooling coil Cond. Evaporator Fan Compressor EC TIC M PC PS+ PS- 2 - circuit f(PC1,2) TC (>1000mm) Condenser 1 Compressor 1 Free cooling coil Evaporator 2 1 PS- PS+ PC1 PS- PS+ PC2 f(TIC) EC TIC Fan Compressor 2 Condenser 2 TC E/0706/12/22 3.4 Cooling system GE2 1 - circuit Free cooling coil PC Cond. Evaporator (>1000mm) Pump 1 Fan Pump 2 Compressor E C TIC PS+ PS- 2 - circuit Free cooling coil Evaporator 1 (>1000mm) Cond.1 Compressor 1 PS- PS+ P C Evaporator 2 Pumps 1/2 Cond.2 Fan E C Compressor 2 TIC PS- PS+ P C E/0706/12/23 3.5 Cooling system CW Cabinet size 1 - 2 CW coil el heating (opt) 3-way chilled water control valve steam humidiﬁer (opt) Fan E C Cabinet size 3 - 4 - 5 CW coil el heating (opt) 3-way chilled water control valve steam humidiﬁer (opt) Fan E C E/0706/12/24 3.6 Cooling system CW2 CW coil 1 CW coil 2 el heating (opt) 3-way chilled water control valve 1 3-way chilled water control valve 2 steam humidiﬁer (opt) Fan E C E/0706/12/25 3.7 Cooling system ACW 1 - circuit CW coil Evaporator 3-way chilled water control valve Receiver (>1000mm) Fan Compressor EC M PS- PS+ 2 - circuit CW coil 3-way chilled water control valve Receiver 1 Evaporator 1 (>1000mm) Compressor 1 PS- PS+ Receiver 2 Evaporator 2 EC Compressor 2 Fan PS- E/0706/12/26 PS+ 3.8 Cooling system GCW 1 - circuit CW coil 3-way chilled water control valve Option f(PC1,2) Evaporator Condenser (>1000mm) EC PS- PS+ Fan PC1 Compressor 2 - circuit CW coil 3-way chilled water control valve Option f(PC1,2) Evaporator 1 Condenser 1 (>1000mm) PS- PS+ PC1 Compressor 1 Condenser 2 Evaporator 2 EC Compressor 2 PC2 Fan PS- PS+ E/0706/12/27 4. Technical data 4.1 Application limits The STULZ CyberAir units are provided for operation within the following ranges: - Chilled water- /cooling water pipes: max. water head pressure: 10 bar - Room conditions: Between 18°C, 45% R.H. and 27°C, 55% R.H. - Hot water conditions for optional heating coil: max. inlet water temperature: 110°C max. water head pressure: 8.5 bar - Outdoor ambient conditions: lower limit: -10°C upper limit: 35°C - Voltage: 200V / 3ph / 50Hz; PE 220V / 3ph / 50Hz; PE 230V / 3ph / 50Hz; PE 380V / 3ph / 50Hz; N; PE 400V / 3ph / 50Hz; N; PE 415V / 3ph / 50Hz; N; PE 200V / 3ph / 60Hz; PE 208V / 3ph / 60Hz; PE 220V / 3ph / 60Hz; PE 230V / 3ph / 60Hz; PE 380V / 3ph / 60Hz; N; PE 460V / 3ph / 60Hz; PE - Frequency: 50 Hz +/- 1% 60 Hz +/- 1% - Max. length of piping between A/C unit and air cooled condenser: 30 m equivalent. - Max. level difference between condenser and A/C unit: 5 m (when condenser is below the A/C unit). - Storage conditions: between -20°C and +42°C The warranty is invalidated for any possible damage or malfunction that may occur during or in consequence of operation outside the application ranges. Adjustment of the pressure switches: LP switch: HP switch: 0.5 bar 24.5 bar Design conditions for technical data: Return air conditions for evaporator capacity (DX): Return air conditions for cooling capacity (CW): EWT - Entering water temperature for CW-coil (CW): LWT - Leaving water temperature for CW-coil (CW): 24°C, 50% rel. hum. 24°C, 50% rel. hum. 7°C 12°C Condensation temperature: Max. condensation temperature: 45°C 60°C Cooling ﬂuid (DX): Fluid inlet temperature (G): Fluid outlet temperature (G): Chilled water medium (CW): 30% Glycol 35°C 40°C 0% Glycol All data is valid for : for Downﬂow units with an external static pressure: for Upﬂow units with an external static pressure: 400V/3ph/50Hz 20 Pa 50 Pa The sound pressure levels are valid at a height of 1m and distance of 2m in front of the unit under free ﬁeld conditions and with nominal data. The values take into account the effects of all installation and design parts contained in the standard unit. The values for upﬂow units assume an installed discharge duct. E/0706/12/28 4.2 Technical Data - ASD/U ... A/G/GE1/ACW/GCW - 1-circuit Modell Type 171 201 241 301 351 431 521 661 791 DX-cooling capacity DX-Kälteleistung total kW 24°C/50% r.H. r.F. sensibel sensible 18,0 18,0 20,8 20,8 25,8 24,5 31,5 29,9 36,0 34,2 45,0 45,0 53,2 49,5 70,6 63,8 85,2 71,9 Verhältnis sens./total Ratio sens./total 1,00 1,00 0,95 0,95 0,95 1,00 0,93 0,90 0,84 CW-Kälteleistung CW-cooling capacity total kW 24°C/50% r.F. r.H. sensibel sensible 19,5 18,0 22,4 20,6 26,8 24,4 33,1 30,0 38,6 34,7 51,2 45,6 56,0 49,5 75,5 66,3 80,8 70,7 Verhältnis sens./total Ratio sens./total 0,92 0,92 0,91 0,91 0,90 0,89 0,88 0,88 0,88 5200 6000 7200 8500 9900 12800 14000 19000 20000 C3 C4 C6 C7 C8 C9 C10 C11 C12 kW 3,6 4,2 5,3 6,4 7,2 9,2 11,0 14,6 18,3 A 7,36 7,6 11,46 13,63 14,11 16,46 19,97 25,54 32,64 EERmax (ASD...A/G) 4,39 4,16 3,91 4,14 3,96 3,88 3,80 3,80 3,69 EERmin (ASU...ACW/GCW/GE) 4,09 3,85 3,58 3,94 3,71 3,75 3,64 3,57 3,51 Luftvolumenstrom Airﬂow m³/h 1 1 Kompressortyp Compressor type Komp.-Leistungsaufnahme Comp. power consumption Komp.-Stromaufnahme Comp. operating current R407C-Füllmenge R407C charge (A-/G-) (A-/G-) 2 2 kg Wasservolumenstrom G/GE Water ﬂow G/GE m³/h dp wasserseitig water side G G 1,0/2,4 1,0/2,8 1,0/3,2 1,0/3,9 1,0/4,1 1,0/4,6 1,0/5,1 1,0/6,2 1,0/6,5 4,2 4,8 6 7,3 8,3 10,5 12,5 16,5 20,1 kPa 67 88 75 57 71 45 62 65 97 dp water wasserseitig side GE GE - summer - Sommer kPa 141 184 212 173 137 121 134 186 237 dp water wasserseitig side GE GE - winter - Winter kPa 120 155 201 169 132 141 186 240 311 Wasservolumenstrom Water ﬂow CW CW m³/h 3,4 3,9 4,6 5,7 6,6 8,8 9,7 13 13,5 dp wasserseitig CW water side CW kPa 48 60 86 56 72 89 89 114 GE/CW-Registerinhalt GE/CW coil content dm³ 9,6 - Ventilgröße GE/CW valve size Ventilatortyp Fan type 1 1" Downﬂow Max. ext.stat. stat.pressure Druck Max. ext. Schalldruckpegel Sound pressure level Ventilatortyp Fan type 1 1 A/G Vent.-Leistungsaufnahme Fan power consumption Schalldruckpegel Sound pressure level Vent.-Leistungsaufnahme Fan power consumption Vent.-Stromaufnahme Fan operating current Ventilatortyp Fan type 1 1 Max. ext. ext.stat. stat.pressure Druck Max. Schalldruckpegel Sound pressure level Vent.-Leistungsaufnahme Fan power consumption Vent.-Stromaufnahme Fan operating current Baugröße Cabinet size 3 3 Downﬂow 2 x F3 700 610 420 260 310 460 340 280 140 49,3 53,2 51,8 55,5 54,1 56,0 57,4 58,9 kW 0,5 0,8 1,3 1,2 1,9 2,4 3,0 4,0 4,8 A 0,98 1,4 2,2 1,97 2,99 3,94 4,92 6,40 7,38 F1 F3 Pa 660 560 350 250 290 280 180 260 110 dBA 48,5 50,8 53,8 52,7 55,7 51,7 53,2 58,0 58,9 kW 0,6 1,0 1,6 1,3 2,1 2,4 3,2 4,4 5,2 A 1,19 1,66 2,57 2,17 3,27 4,04 5,02 6,98 8,04 F3 2 x F1 2 x F2 2 x F3 2 x F3 Pa 640 530 300 440 200 410 290 180 80 dBA 47,1 50,1 53,9 52,4 55,7 54,5 56,4 57,8 58,9 kW 0,6 1,0 1,6 1,5 2,3 2,6 3,4 4,8 5,6 A 1,17 1,67 2,65 2,4 3,6 4,3 5,4 7,48 8,64 F2 Upﬂow Vent.-Leistungsaufnahme Fan power consumption Vent.-Stromaufnahme Fan operating current 2 x F2 46,2 F2 ACW / GCW / GE1 Schalldruckpegel Sound pressure level F3 1 1/2" dBA Ventilatortyp Fan type 1 1 Max. ext.stat. stat.pressure Druck Max. ext. 22,9 Pa F2 Upﬂow Max. ext.stat. stat.pressure Druck Max. ext. F1 123 18,3 1 1/4" F2 1 Vent.-Stromaufnahme Fan operating current 14,3 F3 2 x F1 2 x F3 Pa 610 480 240 420 180 210 340 160 50 dBA 49,4 51,7 54,7 53,3 55,9 53,3 55,0 58,3 59,2 kW 0,8 1,2 1,9 1,6 2,5 2,8 3,6 5,2 6,0 A 1,39 1,94 3,064 2,62 3,91 4,66 5,86 8,08 9,3 1 for electrical data, heating and humidiﬁer equipment see page 35 2 A- stands for A/ACW, G- stands for G/GCW/GE1 3 for dimensions and weights see page 34 2 3 4 1 pext,stat : 20Pa (Downﬂow) / 50Pa (Upﬂow) E/0706/12/29 4.3 Technical Data - ASD/U ... A/G/GE1/ACW/GCW - 2-circuits Modell Type 222 272 332 442 482 602 692 852 1052 DX-Kälteleistung DX-cooling capacity total kW 24°C/50% r.F. r.H. sensibel sensible 23,2 23,2 29,7 29,7 34,9 34,9 46,3 42,9 51,5 47,9 63,8 60,2 72,2 66,3 87,3 76,7 104,3 88,7 Verhältnis sens./total Ratio sens./total 1,00 1,00 1,00 0,93 0,93 0,94 0,92 0,88 0,85 CW-Kälteleistung CW-cooling capacity total kW 24°C/50% r.F. r.H. sensibel sensible 25,5 23,0 35,5 32,0 38,6 34,7 47,6 42,6 54,0 47,9 68,6 60,8 75,1 66,0 88,9 76,3 97,8 84,4 Verhältnis sens./total Ratio sens./total 0,90 0,90 0,90 0,89 0,89 0,89 0,88 0,86 0,86 6600 9100 9900 11900 13500 17300 18900 21000 24000 2 x C9 2xC10 Luftvolumenstrom Airﬂow Kompressortyp Compressor type 1 m³/h 2 x C1 2 x C2 2 x C3 2 x C5 2 x C6 2 x C7 2 x C8 kW 4,6 5,6 7,2 9,4 10,6 12,8 14,4 18,4 22,0 A 9,12 11,1 14,72 18,9 22,92 27,26 28,22 32,92 39,94 4,14 4,24 3,84 4,13 3,84 4,04 3,92 3,91 3,73 3,80 3,96 3,60 3,92 3,68 3,80 3,72 3,81 3,65 1 Komp.-Leistungsaufnahme Comp. power consumption Komp.-Stromaufnahme Comp. operating current EERmax (ASD...A/G) EERmin (ASU...ACW/GCW/GE) 2 2 R407C-Füllmenge R407C charge (A-/G-) (A-/G-) kg 1,0/1,8 1,0/2,1 1,0/2,3 1,0/2,4 1,0/3,2 1,0/3,9 1,0/4,1 1,0/4,6 1,0/5,2 Wasservolumenstrom G/GE Water ﬂow G/GE m³/h 5,3 6,8 8,1 10,8 12,0 14,8 16,8 20,5 24,4 dp wasserseitig water side G G kPa 54 73 72 73 89 80 102 73 103 dp wasserseitig water side GE GE - summer - Sommer kPa 155 184 149 177 216 175 224 192 270 dp wasserseitig water side GE G -- winter Winter kPa 164 159 142 193 235 225 285 257 344 Wasservolumenstrom Water ﬂow CW CW m³/h 4,4 6,1 6,6 8,2 9,3 11,8 12,9 15,3 16,8 dp wasserseitig CW water side CW kPa 79 63 72 78 99 95 114 111 133 GE/CW-Registerinhalt GE/CW coil content dm³ 9,6 14,3 18,3 GE/CW -valve Ventilgröße size 1" Ventilatortyp Fan type F2 F1 F3 1 1 Downﬂow Max. ext. ext. stat. stat.pressure Druck Schalldruckpegel Sound pressure level Vent.-Stromaufnahme Fan operating current Ventilatortyp Fan type 1 1 A/G Vent.-Leistungsaufnahme Fan power consumption Upﬂow Max. ext. ext. stat. stat.pressure Druck Schalldruckpegel Sound pressure level Vent.-Leistungsaufnahme Fan power consumption Vent.-Stromaufnahme Fan operating current Ventilatortyp Fan type 1 1 Max. ext. ext. stat. stat.pressure Druck Schalldruckpegel Sound pressure level Vent.-Leistungsaufnahme Fan power consumption Vent.-Stromaufnahme Fan operating current Baugröße Cabinet size 3 3 Downﬂow Upﬂow Vent.-Leistungsaufnahme Fan power consumption Vent.-Stromaufnahme Fan operating current ACW / GCW / GE1 Schalldruckpegel Sound pressure level 2 x F2 22,9 27,5 1 1/2" 2" 2 x F1 2 x F3 3 x F2 Pa 450 170 310 450 390 160 290 420 200 dBA 51,3 53,3 55,5 52,6 55,3 55,1 57,3 56,5 59,4 kW 1,0 1,4 1,9 1,8 2,8 3,0 4,0 3,9 6,0 A 1,77 2,33 2,99 3,28 4,5 4,88 6,3 6,60 9,33 F2 F1 F3 2 x F3 3 x F1 3 x F3 Pa 300 150 290 300 220 140 260 270 300 dBA 52,4 53,9 55,7 50,6 52,6 56,1 57,9 54,2 56,6 kW 1,2 1,6 2,1 2,0 2,8 3,4 4,4 3,9 5,4 A 2,08 2,56 3,27 3,58 4,6 5,38 6,88 6,27 8,76 F2 F1 F3 Pa 420 80 200 450 340 340 190 330 90 dBA 52,1 53,6 55,7 52,9 55,6 55,8 57,7 57,1 60,0 Ventilatortyp Fan type 1 1 Max. ext. ext. stat. stat.pressure Druck 1 1/4" 2 x F1 2 x F2 2 x F3 3 x F2 kW 1,3 1,8 2,3 2,0 3,0 3,6 4,8 4,8 6,9 A 2,12 2,79 3,6 3,58 4,92 5,78 7,36 7,56 10,86 F2 F1 F3 2 x F1 Pa 300 60 180 280 300 320 170 300 250 dBA 53,3 54,2 55,9 52,1 54,4 56,7 58,2 55,5 57,7 kW 1,5 1,9 2,5 2,4 3,4 4,0 5,0 4,5 6,6 A 2,44 3,06 3,91 3,92 5,34 6,26 7,96 7,44 10,50 1 2 for electrical data, heating and humidiﬁer equipment see page 35 2 A- stands for A/ACW, G- stands for G/GCW/GE1, charge per refrigerant circuit 3 for dimensions and weights see page 34 2 x F3 3 3 x F3 4 5 1 E/0706/12/30 pext,stat : 20Pa (Downﬂow) / 50Pa (Upﬂow) 4.4 Technical Data - ALD/U ... A/G/GE2 - 1-circuit Modell Type 171 201 241 301 351 431 521 661 791 DX-cooling capacity DX-Kälteleistung total kW 24°C/50% r.H. r.F. sensibel sensible 18,1 17,9 21,0 21,0 26,3 24,8 32,5 30,9 36,3 35,9 45,1 45,1 54,8 49,6 70,7 64,2 85,9 73,7 Verhältnis sens./total Ratio sens./total 0,99 1,00 0,94 0,95 0,99 1,00 0,91 0,91 0,86 CW-Kälteleistung CW-cooling capacity total kW 24°C/50% r.F. r.H. sensibel sensible 19,4 17,9 22,6 20,8 26,8 24,5 33,7 30,7 39,5 35,7 49,2 44,6 53,4 48,1 78,6 67,0 84,6 72,4 Verhältnis sens./total Ratio sens./total Luftvolumenstrom Airﬂow 0,92 0,92 0,91 0,91 0,90 0,91 0,90 0,85 0,86 m³/h 4900 5800 6900 8500 9900 12500 13500 17700 19600 C3 C4 C6 C7 C8 C9 C10 C11 C12 kW 3,6 4,2 5,3 6,4 7,2 9,2 11,0 14,6 18,3 A 1 1 Kompressortyp Compressor type Komp.-Leistungsaufnahme Comp. power consumption Komp.-Stromaufnahme Comp. operating current 7,36 7,6 11,46 13,63 14,11 16,46 19,97 25,54 32,64 EERmax (ALD...A/G) 4,76 4,57 4,46 4,51 4,32 4,34 4,42 4,16 3,98 EERmin (ALU...GE2) 4,53 4,38 4,24 4,71 4,22 4,18 4,22 4,02 3,87 R407C-Füllmenge R407C charge (A/G, (A/G, GE2) GE2) kg Wasservolumenstrom Water ﬂow G/GE2 G/GE2 m³/h 1,0/2,9 1,0/3,3 1,0/3,7 1,0/4,4 1,0/4,6 1,0/5,1 1,0/5,6 1,0/6,7 1,0/7,0 4,2 dp wasserseitig water side G G kPa 67 GE-Registerinhalt GE coil content dm³ Schalldruckpegel Sound pressure level Ventilatortyp Fan type 1 A/G Vent.-Leistungsaufnahme Fan power consumption 1 Schalldruckpegel Sound pressure level Vent.-Leistungsaufnahme Fan power consumption Vent.-Stromaufnahme Fan operating current Downﬂow Schalldruckpegel Sound pressure level Vent.-Stromaufnahme Fan operating current 3 3 Baugröße Cabinet size 1 3 75 45 12,7 16,5 64 65 20,2 97 14,3 18,3 22,9 P3 P4 P5 2 x F2 2 x F1 2 x F3 450 450 450 450 450 450 410 dBA 40,1 43,6 47,3 45,5 48,7 48,1 49,7 kW 0,2 0,4 0,6 0,8 1,2 1,2 1,4 A 0,5 0,8 1,2 1,4 2,08 2,18 2,64 Pa 300 300 300 300 300 300 dBA 43,6 46,2 49,1 45,4 47,7 50,7 52 kW 0,3 0,8 0,8 0,8 1,2 1,4 1,8 A 0,63 0,99 1,35 1,6 2,226 2,52 3 2 x F1 2 x F2 2 x F3 300 2 x F1 3 x F2 Pa 450 450 400 450 450 420 360 450 420 dBA 40,4 43,9 47,6 45,9 49,1 48,6 50,2 53,5 55,6 kW 0,3 0,5 0,8 0,8 1,2 1,4 2,7 2,7 3,9 A 0,6 0,9 1,4 1,6 2,28 2,54 4,59 4,92 6,36 F1 Upﬂow Vent.-Leistungsaufnahme Fan power consumption GE2 Vent.-Leistungsaufnahme Fan power consumption Schalldruckpegel Sound pressure level P2 F1 Max. ext.stat. stat.pressure Druck Max. ext. Max. ext.stat. stat.pressure Druck Max. ext. 58 10,5 Pa Ventilatortyp Fan type 1 1 Vent.-Stromaufnahme Fan operating current 80 8,5 F1 Upﬂow Max. ext.stat. stat.pressure Druck Max. ext. Ventilatortyp Fan type 1 1 92 F1 Max. ext.stat. stat.pressure Druck Max. ext. Vent.-Stromaufnahme Fan operating current 7,4 P1 1 Downﬂow Ventilatortyp Fan type 6,2 9,6 Pumpentyp Pump type 11--GE2 GE2units Geräte 1 4,9 2 x F1 3 x F3 Pa 300 300 300 300 300 300 300 300 300 dBA 44,1 46,7 49,5 47,0 49,3 51,2 52,4 52,7 54,3 kW 0,4 0,6 0,9 0,5 1,4 1,6 2 3 3,9 A 0,73 1,07 1,58 0,91 2,58 2,86 3,42 4,98 2 3 4 6,3 5 for electrical data, heating and humidiﬁer equipment see page 35 for dimensions and weights see page 34 pext,stat : 20Pa (Downﬂow) / 50Pa (Upﬂow) E/0706/12/31 4.5 Technical Data - ALD/U ... A/G/GE2 - 2-circuits Modell Type 222 272 332 442 482 602 692 DX-Kälteleistung total DX-cooling capacity kW 24°C/50% r.F. sensibel r.H. sensible 23,4 23,4 29,8 29,8 35,6 35,3 46,9 43,0 53,3 48,2 63,6 60,3 72,9 66,4 Verhältnis sens./total Ratio sens./total 1,00 1,00 0,99 0,92 0,90 0,95 0,91 CW-Kälteleistung total CW-cooling capacity kW 24°C/50% r.F. sensibel r.H. sensible 25,6 23,5 35,0 31,8 38,7 35,0 45,9 41,7 51,7 46,7 76,9 65,4 80,8 69,0 Verhältnis sens./total Ratio sens./total Luftvolumenstrom Airﬂow m³/h 1 1 Kompressortyp Compressor type Komp.-Leistungsaufnahme Comp. power consumption Komp.-Stromaufnahme Comp. operating current R407C-Füllmenge A/G, GE2 R407C charge (A/G, GE2) 0,90 0,91 0,90 0,85 0,85 9700 11700 13100 17100 18400 2 x C1 2 x C2 2 x C3 2 x C5 2 x C6 2 x C7 2 xC8 4,6 5,6 7,2 9,4 10,6 12,8 14,4 A 9,12 11,1 14,72 18,9 22,92 27,26 28,22 4,50 4,66 4,34 4,51 4,44 4,27 4,26 4,33 4,52 4,14 4,34 4,30 4,10 4,12 kg 1,0/2,3 1,0/2,6 1,0/2,8 1,0/2,9 1,0/3,7 1,0/4,4 1,0/4,6 m³/h 5,3 6,9 8,3 10,9 12,3 14,8 16,9 74 75 75 94 80 EERmin (ALU...GE2) Wasservolumenstrom G/GE2 Water ﬂow G/GE2 0,91 8800 kW EERmax (ALD...A/G) 2 0,92 6600 dp wasserseitig water side G G kPa 58 GE-Registerinhalt GE coil content dm³ 9,6 Pumpentyp GE2units Geräte Pump type 11--GE2 Schalldruckpegel Sound pressure level Ventilatortyp Fan type 1 A/G Vent.-Leistungsaufnahme Fan power consumption Vent.-Stromaufnahme Fan operating current Schalldruckpegel Sound pressure level Vent.-Leistungsaufnahme Fan power consumption Vent.-Stromaufnahme Fan operating current Schalldruckpegel Sound pressure level Vent.-Leistungsaufnahme Fan power consumption Vent.-Stromaufnahme Fan operating current 3 3 Baugröße Cabinet size Downﬂow P4 P5 2 x F1 3 x F2 450 450 450 430 450 450 dBA 46,4 46,2 48,2 46,7 49,1 52,0 53,6 kW 0,6 0,8 1 1 1,4 2,1 2,7 A 1,06 1,54 1,98 1,86 2,46 3,96 4,74 Pa 300 300 300 300 300 300 300 dBA 48,4 45,9 47,4 49,6 51,5 50,9 52,0 kW 0,7 1,6 1,2 1,2 1,6 2,1 2,7 A 1,22 1,72 2,14 2,18 2,8 3,93 2 x F1 3 x F1 2 x F2 2 x F1 4,62 3 x F2 Pa 430 450 450 450 390 450 450 dBA 46,7 46,6 48,6 46,9 49,6 52,7 54,3 kW 0,7 0,8 1,2 1,2 1,6 2,7 3,3 A 1,26 1,7 2,16 2,16 2,86 4,53 F1 Upﬂow Max. ext. ext.stat. stat.pressure Druck GE2 Vent.-Leistungsaufnahme Fan power consumption 22,9 450 F1 Schalldruckpegel Sound pressure level Ventilatortyp Fan type 1 1 2 x F2 103 18,3 Pa Ventilatortyp Fan type 1 1 Max. ext. ext.stat. stat.pressure Druck P3 F1 Upﬂow Max. ext. ext.stat. stat.pressure Druck Vent.-Stromaufnahme Fan operating current P2 F1 Max. ext. ext.stat. stat.pressure Druck 1 P1 1 Downﬂow Ventilatortyp Fan type 1 14,3 2 x F1 5,43 3 x F3 Pa 300 300 300 300 300 300 300 dBA 48,8 47,5 48,9 50,1 51,9 52,2 53,3 kW 0,8 1 1,4 1,4 1,8 2,7 3,3 A 1,43 1,96 2,46 2,46 3,18 4,62 2 for electrical data, heating and humidiﬁer equipment see page 35 charge per refrigerant circuit 3 for dimensions and weights see page 34 3 4 5,46 5 1 2 E/0706/12/32 pext,stat : 20Pa (Downﬂow) / 50Pa (Upﬂow) 4.6 Technical Data - ASD/U ... CW Modell Type 300 400 500 660 740 900 960 1100 1200 1500 CW-cooling capacity total CW-Kälteleistung kW 24°C/50% r.H. r.F. sensibel sensible 30,1 25,6 38,8 33,1 54,1 43,0 68,1 54,9 75,5 63,9 89,8 75,7 101,8 82,0 114,7 92,6 121,0 99,0 146,2 120,1 Verhältnis sens./total Ratio sens./total 0,85 0,85 0,79 0,81 0,85 0,84 0,81 0,81 0,82 0,82 Luftvolumenstrom Airﬂow 6500 8500 Wasservolumenstrom CW m³/h Water ﬂow CW 5,2 6,7 9,3 11,7 13,0 15,5 17,5 19,8 19,3 22,8 dp wasserseitig CW water side CW kPa 36 58 67 100 53 73 67 83 82 119 CW-Registerinhalt CW coil content dm³ Max. ext.stat. stat.pressure Druck Max. ext. Schalldruckpegel Sound pressure level Vent.-Leistungsaufnahme Fan power consumption Max. ext.stat. stat.pressure Druck Max. ext. Schalldruckpegel Sound pressure level Vent.-Leistungsaufnahme Fan power consumption 2x 21,4 F1 2 x F2 2x 26,9 2 x F3 2x 32,3 3 x F3 420 140 450 450 410 140 330 70 410 110 dBA 46,0 51,6 48,8 54,5 54,5 58,2 62,2 64,8 61,2 65,1 kW 0,7 1,6 1,2 2,4 3 5 3,6 5,2 4,5 8,1 A 1,31 2,54 2,1 4,18 4,96 7,9 5,76 8,04 7,44 12,45 F1 F3 Pa 300 300 300 300 300 120 300 60 300 120 dBA 48,5 53,1 50,7 55,0 55,8 58,6 62,4 65,0 62,3 65,4 kW 0,8 1,8 1,4 2,6 3,4 5,4 4 5,4 5,4 9,3 A 1,49 2,84 2,4 4,42 5,58 8,56 6,18 8,54 8,58 1 Upﬂow Ventilatortyp Fan type 22,8 Pa Vent.-Stromaufnahme Fan operating current 1 10000 13000 16000 19000 19500 22000 24000 29000 15,2 1 Downﬂow Ventilatortyp Fan type 1 m³/h Vent.-Stromaufnahme Fan operating current 2 2 Baugröße Cabinet size 2 x F2 1 Gewicht Weight kg 307 2 x F3 2 307 362 3 x F3 3 362 4 547 547 568 14,28 5 568 755 755 4.7 Technical Data - ASD/U ... CW2 Modell Type 330 560 650 950 1200 CW-cooling capacity total CW-Kälteleistung kW 24°C/50% r.H. r.F. sensibel sensible 26,0 24,0 48,8 43,5 62,7 55,1 78,6 69,0 103,0 89,3 Verhältnis sens./total Ratio sens./total 0,92 0,89 0,88 0,88 0,87 7500 13000 16000 20000 26000 Wasservolumenstrom CW m³/h Water ﬂow CW 4,5 8,4 10,8 13,5 17,7 dp wasserseitig CW water side CW kPa 69 88 98 113 131 CW-Registerinhalt CW coil content dm³ 2x 9,6 2x 14,2 2x 18,3 2x 22,9 2x 27,2 F3 2 x F2 Pa 410 360 240 100 220 dBA 51,4 55,4 56,4 58,8 58,1 Luftvolumenstrom Airﬂow m³/h Max. ext. ext.stat. stat.pressure Druck Max. Schalldruckpegel Sound pressure level Vent.-Leistungsaufnahme Fan power consumption Downﬂow Ventilatortyp Fan type 1 1 Vent.-Stromaufnahme Fan operating current Vent.-Leistungsaufnahme Fan power consumption Vent.-Stromaufnahme Fan operating current Baugröße Cabinet size 2 Gewicht Weight 1 2 Upﬂow Schalldruckpegel Sound pressure level 3 x F3 kW 1,5 3 4,2 5,4 6,9 A 2,45 4,76 6,74 8,42 10,59 F2 2 x F2 Pa 260 300 190 90 210 dBA 54,9 56,3 57,2 61,7 58,5 kW 1,9 3,4 5 5,8 7,2 A 2,99 5,5 7,7 8,9 11,31 1 2 3 4 5 357 422 577 608 795 Ventilatortyp Fan type 1 1 Max. ext. ext.stat. stat.pressure Druck Max. 2 x F3 2 kg for electrical data, heating and humidiﬁer equipment see page 35 for dimensions see page 34 2 x F3 2 x F3 pext,stat : 20Pa (Downﬂow) / 50Pa (Upﬂow) E/0706/12/33 4.8 Dimensions Cabinet Baugröße size 4.9 Weights 1 2 3 4 5 1000 1400 1750 2150 2550 Breite Width mm Höhe Height mm 1980 Depth Tiefe mm 890 Standard Units ASD/U [kg] 1-circuit 171 201 241 301 351 431 521 661 791 A D U 338 343 406 401 464 459 469 464 561 556 681 676 691 686 721 716 G D U 360 365 435 425 500 490 505 495 600 590 720 710 750 740 780 770 GE1 D U 395 400 465 460 535 530 540 535 640 635 760 755 795 790 825 820 ACW D U 383 388 451 446 514 509 519 514 616 611 736 731 751 746 781 776 GCW D U 385 390 455 450 525 520 530 525 630 625 750 745 785 780 815 810 222 272 332 442 482 602 692 852 1052 2-circuits A D U 392 387 463 458 484 479 590 585 710 705 771 766 786 781 888 883 923 918 G D U 435 425 505 495 545 535 660 650 780 770 870 860 885 875 1000 990 1035 1025 GE1 D U 465 460 540 535 580 575 700 695 820 815 915 910 930 925 1050 1045 1085 1080 ACW D U 437 432 513 508 534 529 645 640 765 760 831 826 846 841 953 948 988 983 GCW D U 455 450 530 525 570 565 690 685 810 805 905 900 920 915 1040 1035 1075 1070 Low-Energy Units ALD/U [kg] 1-circuit 201 241 301 351 431 521 661 791 A D U 403 408 471 466 554 549 559 554 637 632 757 752 787 782 817 812 G D U 425 430 495 490 585 580 590 585 671 666 791 786 841 836 871 866 GE2 D U 486 491 559 554 675 670 680 675 766 761 886 881 959 954 989 984 2-circuits E/0706/12/34 171 222 272 332 442 482 602 692 A D U 457 452 553 548 574 569 666 661 786 781 867 862 882 877 G D U 495 490 590 585 630 625 731 726 851 846 961 956 976 971 GE2 D U 556 551 680 675 720 715 826 821 958 953 1079 1074 1094 1089 4.10 Electrical Data - 400V / 3ph / 50Hz Ventilator Fan Electrical Heating FLA [A] LRA [A] F1 3,45 4,48 F2 4,10 5,53 Stages Stufen total Gesamt Nom. current[A] [A] Nennstrom L1 - L2 - L3 F3 4,70 6,11 4 4 0 - 10,0 - 10,0 9 9 13,1 - 13,1 - 13,1 Nom. power [kW] Nennleistung [kW] Compressor Kompressor FLA [A] LRA [A] 4+4 8 10,0 - 17,3 - 10,0 C1 5,94 44 9+4 13 13,1 - 23,1 - 23,1 C2 7,01 50 9+9 18 26,2 - 26,2 - 26,2 C3 9,00 63 4+4+4 12 17,3 - 17,3 - 17,3 C4 10,18 70 9+4+4 17 23,1 - 30,4 - 23,1 C5 12,18 100 9+9+4 22 26,2 - 36,2 - 36,2 C6 13,53 99 9+9+9 27 39,2 - 39,2 - 39,2 C7 16,02 125 C8 18,40 127 C9 22,07 158 Hum.capacity[kg/h] Bef.leistung [kg/h] Nom. current[A] [A] Nennstrom Nom. power [kW] Nennleistung [kW] C10 26,11 187 5 5,4 3,75 C11 33,10 225 8 8,7 6,0 C12 39,62 250 10 10,8 7,5 15 16,2 11,25 Pumpe Pump Steam humidiﬁer PN [kW] FLA [A] P1 0,37 2,6 P2 0,37 2,6 P3 0,37 2,6 P4 0,75 4,9 P5 1,1 7,0 FLA: Full load amp - nominal current LRA: Locked rotor amp PN: Nominal power Humidiﬁer- & Heating Assignment to the construction sizes DX Cabinet size Baugröße 1 Humidifying capacity Befeuchtungsleistung kg/h Heating capacity 1 Heizleistung StufeStage 1 kW Heating capacity 2 Heizleistung StufeStage 2 kW Heating capacity 3 Heizleistung StufeStage 3 kW Total heating capacity kW Max. max. Gesamtheizleistung 2 CW 3 5 4 5/8 5 1 2 3 5/8 5/8/10/15 5 5/8/10/15 4/9 4/9 4 4/9 4 12 4 4 4/9 18 27 4/9 4 12 4/9 18 27 For all units max. 3 heating stages are possible. E/0706/12/35 4.11 Dimensional drawings 4.11.1 Cabinet size 1 Upﬂow 35 1980 10 Downﬂow 1000 890 890 890 1000 1000 E/0706/12/36 1000 4.11.2 Cabinet size 2 1400 35 890 Upﬂow 1400 890 1980 10 1400 1400 Downﬂow 890 E/0706/12/37 4.11.3 Cabinet size 3 35 1980 10 Downﬂow 1750 890 890 1750 E/0706/12/38 Cabinet size 3 35 1980 10 Upﬂow 1750 890 890 1750 E/0706/12/39 4.11.4 Cabinet size 4 35 1980 10 Downﬂow 2150 890 890 2150 E/0706/12/40 Cabinet size 4 35 1980 10 Upﬂow 2150 890 890 2150 E/0706/12/41 4.11.5 Cabine size 5 35 890 Downﬂow 1980 10 2550 2550 890 E/0706/12/42 Cabinet size 5 35 890 Upﬂow 1980 2550 2550 890 E/0706/12/43 10 5. Transport / Storage 5.1 Delivery of units Stulz A/C units are mounted on pallets and packed several times in plastic ﬁlm. They must always be transported upright on the pallets. Construction of protective covering (from inside to outside) 1. 2. 3. Neopolene cushioning Shrink ﬁlm Additional board in container shipments The following information can be found on the packing. 1) Stulz logo 2) Stulz order number 3) Type of unit 4) Packing piece - contents 5) Warning symbols also upon request 6) Gross weight 7) Net weight 8) Dimensions 9) Customer order number 10) Additional customer requirements When delivery is accepted, the unit is to be checked against the delivery note for completeness and checked for external damage which is to be recorded on the consignment note in the presence of the freight forwarder. • • • The delivery note can be found on the A/C unit when delivered. The shipment is made ex works, in case of shipment damages, please assert your claim towards the carrier. Hidden damage is to be reported in writing within 6 days of delivery. 5.2 Transport The Stulz A/C units can be moved by lifting devices with ropes, for this the ropes have to be ﬁxed at the pallet, and the upper unit edges have to be protected by wooden laths or metal brackets in such a way that they could not be caved in. You can move the unit still packaged on the pallet with a fork lift, if you take care that the centre of gravity is within the fork surface. Take care that the unit is in an upright position at the transport. Never move the unit on rollers and never transport it without pallet on a fork lift, for the risk of distorting the frame. 5.3 Storage If you put the unit into intermediate storage before the installation, the following measures have to be carried out to protect the unit from damage and corrosion: • Make sure that the water connections are provided with protective hoods. If the intermediate storage exceeds 2 months, we recommend ﬁlling the pipes with nitrogen. • the temperature at the storage point should not be higher than 42°C, and the site should not be exposed to direct sunlight. • the unit should be stored packaged to avoid the risk of corrosion especially of the condenser ﬁns. E/0706/12/44 6. Installation 6.1 Positioning Check that the installation site is appropriated for the unit weight, which you can read in the technical data. The A/C unit is designed for the inside installation on a level base. The solid base frame contributes signiﬁcantly to an even weight distribution. When selecting the installation site take into account the necessary clearances for the maintenance and the air ﬂow. 1m 0,5m The unit may not be operated in an explosive atmosphere! Maintenance clearance Air intake area for Downﬂow units and air outlet area for Upﬂow units without duct connection 6.2 Air side connection (optional) For the air side connection exist different options, which are designed as a simple ducting system (SDS), which can be optionally pre-assembled at the factory or assembled on the installation site. For each construction size there are speciﬁc front and rear parts according to the unit width. Discharge plenum width: according to the unit width depth: according to the unit depth height: 500 mm Sound insulation plenum width: according to the unit width depth: according to the unit depth height: 500/800 mm E/0706/12/45 Duct width: according to the unit width depth: according to the unit depth height: 500/800 mm Duct set on system with bag ﬁlter width: according to the unit width depth: according to the unit depth height: 500/800 mm Unit base width: unit width minus 40 mm depth: 865 mm height: 450 mm Unit base with grilles width: unit width minus 40 mm depth: 865 mm height: 450 mm Unit base with damper width: unit width minus 40 mm depth: 865 mm height: 450 mm Unit base with ﬂexible connection width: unit width minus 40 mm depth: 865 mm height: 450 mm E/0706/12/46 6.3 Connection of the piping D 6.3.1 Version D - Downﬂow 6.3.1.1 Version A ASD ... A 171 201 241 301 351 431 521 661 791 Pressure Druckleitung line L5 L5 L3 L9 L9 L4 L4 L5 L5 Durchmesser Diameter [mm] [mm] Flüssigkeitsleitung Liquid line 16 L6 22 L6 L6 Durchmesser Diameter [mm] [mm] L4 L4 28 L8 L8 16 L9 L7 22 28 Befeuchterzulauf Humidiﬁer inlet L10 L10 L10 L1 L1 L14 L14 L15 L15 Befeuchterablauf Humidiﬁer outlet L9 L9 L9 L3 L3 L1 L1 L1 L1 Drawing n° Zeichnungs-Nr. A1 A2 A3 A4 ASD ... A 222 272 332 442 482 602 692 852 1052 Pressure Druckleitung line 11 L6 L11 L11 L9 L10 L9 L9 L6 L6 Druckleitung Pressure line 22 L5 L10 L10 L4 L4 L5 L5 L3 L3 Durchmesser Diameter [mm] [mm] 12 Flüssigkeitsleitung Liquid line 1 1 L7 L8 L8 L5 L5 L6 L6 L8 L8 Flüssigkeitsleitung Liquid line 2 2 L8 L6 L4 L3 L3 L2 L2 L4 L4 Durchmesser Diameter [mm] [mm] 12 Befeuchterzulauf Humidiﬁer inlet L1 L1 L1 L14 L14 L15 L15 L13 L13 Befeuchterablauf Humidiﬁer outlet L2 L3 L3 L1 L1 L1 L1 L1 L1 Drawing n° Zeichnungs-Nr. A1 ALD ... A 171 201 241 301 351 431 521 661 791 Pressure Druckleitung line L11 L11 L10 L4 L4 L9 L5 L4 L4 Durchmesser Diameter [mm] [mm] Flüssigkeitsleitung Liquid line 16 22 16 A2 22 A3 16 L4 28 A4 A5 22 L4 L4 Durchmesser Diameter [mm] [mm] L7 L7 28 L6 L9 16 L5 L5 22 28 Befeuchterzulauf Humidiﬁer inlet L1 L1 L1 L14 L14 * * L10 L10 Befeuchterablauf Humidiﬁer outlet L3 L3 L3 L1 L1 * * L1 L1 Drawing n° Zeichnungs-Nr. A2 A3 A4 A5 ALD ... A 222 272 332 442 482 602 692 Pressure Druckleitung line 11 * * * L9 L9 L6 L6 Druckleitung Pressure line 22 * * * L5 L5 L3 L3 Drawings A1 until A6 Durchmesser Diameter [mm] [mm] 12 Flüssigkeitsleitung Liquid line 1 1 * * see page 53-55 ! Flüssigkeitsleitung Liquid line 2 2 * * Durchmesser Diameter [mm] [mm] 12 Befeuchterzulauf Humidiﬁer inlet L1 L14 L14 Befeuchterablauf Humidiﬁer outlet L3 L1 L1 Drawing n° Zeichnungs-Nr. A2 16 L2 22 L6 L6 L8 L8 L2 L2 L4 L4 * * L13 L13 * * L1 L1 16 A3 A4 A6 *The data is available for speciﬁc orders on request. E/0706/12/47 D 6.3.1.2 ACW - Version ASD ... ACW 171 201 241 301 351 431 521 661 791 Pressure Druckleitung line L5 L5 L3 L10 L10 L4 L4 L5 L5 Durchmesser Diameter [mm] [mm] 16 Flüssigkeitsleitung Liquid line L7 22 L7 L7 Durchmesser Diameter [mm] [mm] L4 28 L4 L8 L8 16 L9 L7 22 28 Chilled Kaltwassereintritt water inlet L8 L8 L8 L13 L13 L2 L2 L4 L4 Kaltwasseraustritt Chilled water outlet L6 L6 L6 L7 L7 L16 L16 L14 L14 Durchmesser Diameter [mm] [mm] 28 35 42 54 Befeuchterzulauf Humidiﬁer inlet L10 L10 L10 L1 L1 L14 L14 L15 L15 Befeuchterablauf Humidiﬁer outlet L9 L9 L9 L3 L3 L1 L1 L1 L1 Drawing n° Zeichnungs-Nr. A1 A2 A3 A4 ASD ... ACW 222 272 332 442 482 602 692 852 1052 Pressure Druckleitung line 11 * * * L9 L10 * L11 L6 L6 Druckleitung Pressure line 22 * * * L4 L4 * L5 L3 L3 Durchmesser Diameter [mm] [mm] 12 Flüssigkeitsleitung Liquid line 1 1 * * * L5 L5 * L7 L8 L8 Flüssigkeitsleitung Liquid line 2 2 * * * L3 L3 * L6 L4 L4 Durchmesser Diameter [mm] [mm] 12 16 22 28 16 22 Chilled Kaltwassereintritt water inlet * * * L2 L16 * L4 L2 L2 Kaltwasseraustritt Chilled water outlet * * * L2 L16 * L13 L12 L12 Durchmesser Diameter [mm] [mm] 28 Befeuchterzulauf Humidiﬁer inlet * L1 L1 L14 L14 * L1 L13 L13 Befeuchterablauf Humidiﬁer outlet * L3 L3 L1 L1 * L15 L1 L1 Drawing n° Zeichnungs-Nr. A1 35 A2 42 A3 54 A4 *The data is available for speciﬁc orders on request. Drawings A1 until A6 see page 53-55 ! E/0706/12/48 70 A5 D 6.3.1.3 G - Version In units with one or two refrigerant circuits there is only one water circuit and hence one connection for the water inlet and outlet respectively. ASD ... G 171 201 241 301 351 431 521 661 791 Cooling Kühlwassereintritt water inlet * * L7 L6 * * * * * Cooling Kühlwasseraustritt water outlet * * L8 L14 * * * * * Durchmesser Diameter [mm] [mm] 28 35 42 54 Befeuchterzulauf Humidiﬁer inlet * * L9 L7 * * * * * Befeuchterablauf Humidiﬁer outlet * * L10 L8 * * * * * Drawing n° Zeichnungs-Nr. A1 A2 A3 A4 ASD ... G 222 272 332 442 482 602 692 852 1052 Cooling Kühlwassereintritt water inlet * * * * * * * * * Cooling Kühlwasseraustritt water outlet * * * * * * * * * Durchmesser Diameter [mm] [mm] 35 42 54 70** Befeuchterzulauf Humidiﬁer inlet * * * * * * * * * Befeuchterablauf Humidiﬁer outlet * * * * * * * * * Drawing n° Zeichnungs-Nr. A1 A2 A3 A4 A5 ** Attention: Concerning the unit sizes 852 and 1052, the pipework from the 70mm screw connection must be carried out as pipes of 64mm diameter. ALD ... G 171 201 241 301 351 431 521 661 791 Cooling Kühlwassereintritt water inlet * * * * * * * * * Cooling Kühlwasseraustritt water outlet * * * * * * * * * Durchmesser Diameter [mm] [mm] 28 35 42 54 Befeuchterzulauf Humidiﬁer inlet * * * * * * * * * Befeuchterablauf Humidiﬁer outlet * * * * * * * * * Drawing n° Zeichnungs-Nr. A2 A3 A4 A5 ALD ... G 222 272 332 442 482 602 692 Cooling Kühlwassereintritt water inlet * * * * * * * Cooling Kühlwasseraustritt water outlet * * * * * * * Durchmesser Diameter [mm] [mm] 35 42 54 Befeuchterzulauf Humidiﬁer inlet * * * * * * * Befeuchterablauf Humidiﬁer outlet * * * * * * * Drawing n° Zeichnungs-Nr. A2 A3 A4 Drawings A1 until A6 see page 53-55 ! A6 *The data is available for speciﬁc orders on request. E/0706/12/49 D G - Version with cooling water control valve (2- and 3-way) ASD ... G 171 201 241 301 351 431 521 661 791 Cooling Kühlwassereintritt water inlet L6 * L6 L6 L6 L2 * * * Cooling Kühlwasseraustritt water outlet L7 * L7 L14 L14 L7 * * * Durchmesser Diameter [mm] [mm] 28 35 42 54 Befeuchterzulauf Humidiﬁer inlet L10 L10 L10 L7 L7 L14 L14 * * Befeuchterablauf Humidiﬁer outlet L9 L9 L9 L8 L8 L1 L1 * * Drawing n° Zeichnungs-Nr. A1 A2 A3 A4 ASD ... G 222 272 332 442 482 602 692 852 1052 Cooling Kühlwassereintritt water inlet * * * * * * * * * Cooling Kühlwasseraustritt water outlet * * * * * * * * * Durchmesser Diameter [mm] [mm] 35 42 54 70** Befeuchterzulauf Humidiﬁer inlet L1 L7 L7 L14 L14 * * * * Befeuchterablauf Humidiﬁer outlet L2 L8 L8 L1 L1 * * * * Drawing n° Zeichnungs-Nr. A1 A2 A3 A4 A5 ** Attention: Concerning the unit sizes 852 and 1052, the pipework from the 70mm screw connection must be carried out as pipes of 64mm diameter. ALD ... G 171 201 241 301 351 431 521 661 791 Cooling Kühlwassereintritt water inlet * * * * * * * * * Cooling Kühlwasseraustritt water outlet * * * * * * * * * Durchmesser Diameter [mm] [mm] 28 35 42 54 Befeuchterzulauf Humidiﬁer inlet * * * * * * * * * Befeuchterablauf Humidiﬁer outlet * * * * * * * * * Drawing n° Zeichnungs-Nr. A2 A3 A4 A5 ALD ... G 222 272 332 442 482 602 692 Cooling Kühlwassereintritt water inlet * * * * * * * Cooling Kühlwasseraustritt water outlet * * * * * * * Durchmesser Diameter [mm] [mm] 35 42 54 Befeuchterzulauf Humidiﬁer inlet * * * * * * * Befeuchterablauf Humidiﬁer outlet * * * * * * * Drawing n° Zeichnungs-Nr. A2 A3 A4 A6 *The data is available for speciﬁc orders on request. E/0706/12/50 Drawings A1 until A6 see page 53-55 ! D 6.3.1.4 GCW - Version In 1-circuit units and 2-circuit units there are 4 water connections in total (2x water inlet, 2x water outlet). ASD ... GCW 171 201 241 301 351 431 521 661 791 Cooling Kühlwassereintritt water inlet L8 L8 * L6 * * * * * Cooling Kühlwasseraustritt water outlet L7 L7 * L14 * * * * * Durchmesser Diameter [mm] [mm] 28 35 42 54 Chilled Kaltwassereintritt water inlet L5 L5 * L7 * * * * * Kaltwasseraustritt Chilled water outlet L6 L6 * L8 * * * * * Durchmesser Diameter [mm] [mm] 28 Befeuchterzulauf Humidiﬁer inlet L10 Befeuchterablauf Humidiﬁer outlet L9 Drawing n° Zeichnungs-Nr. 35 L10 L10 L12 L9 L9 L13 A1 42 54 L7 * L8 * A2 * * * * A3 * * A4 ASD ... GCW 222 272 332 442 482 602 692 852 1052 Cooling Kühlwassereintritt water inlet * * * * * * * * * Cooling Kühlwasseraustritt water outlet * * * * * * * * * Durchmesser Diameter [mm] [mm] 35 42 54 70** Chilled Kaltwassereintritt water inlet * * * * * * * * * Kaltwasseraustritt Chilled water outlet * * * * * * * * * Durchmesser Diameter [mm] [mm] 28 Befeuchterzulauf Humidiﬁer inlet L1 L7 L7 * * * * * * Befeuchterablauf Humidiﬁer outlet L2 L8 L8 * * * * * * Drawing n° Zeichnungs-Nr. A1 35 A2 42 A3 54 A4 70** A5 ** Attention: Concerning the unit sizes 852 and 1052, the pipework from the 70mm screw connection must be carried out as pipes of 64mm diameter. *The data is available for speciﬁc orders on request. Drawings A1 until A6 see page 53-55 ! E/0706/12/51 D 6.3.1.5 GE1 - Version ASD ... GE1 171 201 241 301 351 431 521 661 791 Cooling Kühlwassereintritt water inlet L5 L6 L7 L8 L8 L2 L2 * * Cooling Kühlwasseraustritt water outlet L7 L7 L6 L13 L13 L7 L7 * * Durchmesser Diameter [mm] [mm] 28 35 42 54 Befeuchterzulauf Humidiﬁer inlet L10 L10 L10 L7 L7 L14 L14 * * Befeuchterablauf Humidiﬁer outlet L9 L9 L9 L6 L6 L1 L1 * * Drawing n° Zeichnungs-Nr. A1 A2 A3 A4 ASD ... GE1 222 272 332 442 482 602 692 852 1052 Cooling Kühlwassereintritt water inlet L8 L11 L11 L17 * L17 L17 L2 L2 Cooling Kühlwasseraustritt water outlet L6 L4 L4 L18 * L16 L16 L5 L5 Durchmesser Diameter [mm] [mm] 35 42 54 70** Befeuchterzulauf Humidiﬁer inlet L1 L7 L7 L9 * L7 L7 L13 L13 Befeuchterablauf Humidiﬁer outlet L2 L8 L8 L11 * L6 L6 L1 L1 Drawing n° Zeichnungs-Nr. A1 A2 A3 A4 A5 ** Attention: Concerning the unit sizes 852 and 1052, the pipework from the 70mm screw connection must be carried out as pipes of 64mm diameter. 6.3.1.6 GE2 - Version ALD ... GE2 171 201 241 301 351 431 521 661 791 Cooling Kühlwassereintritt water inlet L12 L12 L12 * * L4 L4 * * Cooling Kühlwasseraustritt water outlet L10 L10 L10 * * L13 L13 * * Durchmesser Diameter [mm] [mm] 35 42 54 Befeuchterzulauf Humidiﬁer inlet L7 L7 L7 * * L12 L12 * * Befeuchterablauf Humidiﬁer outlet L8 L8 L8 * * L7 L7 * * Drawing n° Zeichnungs-Nr. A2 A3 A4 A5 ALD ... GE2 222 272 332 442 482 602 692 Cooling Kühlwassereintritt water inlet * L20 * * * * * Cooling Kühlwasseraustritt water outlet * L19 * * * * * Durchmesser Diameter [mm] [mm] 35 Befeuchterzulauf Humidiﬁer inlet L7 L14 * * * * * Befeuchterablauf Humidiﬁer outlet L8 L1 * * * * * Drawing n° Zeichnungs-Nr. A2 42 A3 54 A4 A6 *The data is available for speciﬁc orders on request. E/0706/12/52 Drawings A1 until A6 see page 53-55 ! D 6.3.1.7 Pipe entrance area - Downﬂow version - DX At Downﬂow units the supply pipes and cables are introduced from the bottom through openings in the base plate. The unit bottom views are displayed following. A1: 470 540 610 680 L4 L5 L6 L7 L8 60 70 0 960 399 L3 800 850 900 200 L1 L2 75 130 Power supply 866 L9 L10 L11 356 Ø32 Condensate drain 70 unit rear side A2: L7 L8 L10 1360 L9 1260 940 L6 799 L5 685 L1 L2 L3 L4 465 519 535 605 609 220 395 159 280 0 60 70 70 100 160 0 Power supply L11 L12 263 310 L13 L14 452 Ø 32 Condensate drain unit rear side 866 1360 E/0706/12/53 D Bottom view A3: Power supply Condensate drain unit rear side A4: Condensate drain Power supply Condensate drain unit rear side E/0706/12/54 D Bottom view A5: Power supply Condensate drain unit rear side A6: Power supply Condensate drain unit rear side E/0706/12/55 D 6.3.1.8 CW / CW2 - Version Diameter of the chilled water lines for ASD/U ... CW Ausführung Version CW 300 mm 400 500 35 660 740 42 900 54 960 1100 1200 1500 70* Diameter of the chilled water lines (2 circuits) for ASD/U ... CW2 Ausführung Version CW2 330 mm 35 560 650 42 950 1200 54 70* In units of version CW2 there are 4 water connections in total (2x water inlet, 2x water outlet). *Attention: Concerning the unit sizes 960, 1100, 1200 and 1500, the pipework from the 70mm screw connection must be carried out as pipes of 64mm diameter. E/0706/12/56 6.3.1.9 Pipe entrance area - Downﬂow version - CW At Downﬂow units the supply pipes and cables are introduced from the bottom through openings in the base plate. The unit bottom views are displayed following. ASD 300/400 CW D Bottom view Power supply Chilled water outlet Chilled water inlet Humidiﬁer inlet Humidiﬁer outlet unit rear side Condensate drain ASD 500/660 CW Power supply Water inlet Humidiﬁer inlet Water outlet Humidiﬁer outlet unit rear side Condensate drain E/0706/12/57 D ASD 740/900 CW Bottom view Power supply Water inlet Water outlet Humidiﬁer outlet Humidiﬁer inlet unit rear side Condensate drain ASD 960/1100 CW Water inlet Water outlet Power supply Humidiﬁer outlet Humidiﬁer inlet unit rear side ASD 1200/1500 CW Water inlet Water outlet Humidiﬁer outlet Humidiﬁer inlet unit rear side Condensate drain E/0706/12/58 Condensate drain Power supply 6.3.2 Version U - Upﬂow 6.3.2.1 Version A U ASU ... A 171 201 241 301 351 431 521 661 791 L 1/2 R R R R R R R R R L 3/4 R R R R R R R R R R R R R R R R R L 5/6 L 7/8 R 1/2 R 3/4 R R R R 5/6 R R R R 7/8 Druckleitung Ø pressure line [mm] 16 ØØ Flüssigkeitsltg [mm] liquid line [mm] 22 28 16 22 ASU ... A 222 272 332 442 L 1/2 R R R L 3/4 R R R L 5/6 R 482 28 602 692 852 1052 R R R R R R R R R R R R R R R R R R R R R R R R L 7/8 R 1/2 R R 3/4 R R 5/6 R R R R R R 7/8 Druckleitung Ø pressure line [mm] 12 ØØ Flüssigkeitsltg [mm] liquid line [mm] 12 ALU ... A 171 201 241 661 791 L 1/2 R R R R R L 3/4 R R R R R L 5/6 R R R R R R 3/4 R R R R 5/6 R R R R R 16 22 28 16 301 22 351 431 521 L 7/8 R 1/2 R 7/8 Druckleitung Ø pressure line [mm] ØØ Flüssigkeitsltg [mm] liquid line [mm] 16 22 16 28 22 28 Notes: R: refrigerant piping, CW - chilled water piping, G - cooling water piping - For the routing of the piping into the unit there are basically several possibilities. The most favourable openings are those which are recommended in the tables. The lines for the power supply, the humidiﬁer connections and the condensate drain can be routed through the remaining openings as desired. See drawing on page 66 ! E/0706/12/59 U ALU ... A 222 272 332 442 482 602 692 L 1/2 R R L 3/4 R R L 5/6 R R R R L 7/8 R 1/2 R 3/4 R 5/6 R 7/8 Druckleitung Ø pressure line [mm] 12 ØØ Flüssigkeitsltg [mm] liquid line [mm] 12 16 22 16 6.3.2.2 Version ACW ASU ... ACW 171 L 1/2 L 3/4 201 241 301 351 431 521 CW CW CW CW CW CW R R R/CW R/CW CW CW R R R CW CW L 5/6 661 791 L 7/8 R 1/2 R R 3/4 R R 5/6 R R R 7/8 Druckleitung Ø pressure line [mm] 16 22 ØØ Flüssigkeitsltg [mm] liquid line [mm] 16 Ø [mm] ØWasserleitung ch. water line [mm] ASU ... ACW 28 22 28 222 35 272 332 42 442 482 28 54 602 692 852 1052 L 1/2 CW CW CW L 3/4 R/CW CW CW L 5/6 R CW CW R R R R R R R L 7/8 R 1/2 R 3/4 R 5/6 R R 7/8 Druckleitung Ø pressure line [mm] 12 ØØ Flüssigkeitsltg [mm] liquid line [mm] 12 Ø ØWasserleitung ch. water line [mm] [mm] 28 Legend: R - refrigerant piping, CW - chilled water piping E/0706/12/60 16 22 16 35 42 28 22 54 70 See drawing on page 66 ! 6.3.2.3 Version G In units with one or two refrigerant circuits there is only one water circuit and hence one connection for the water inlet and outlet respectively. ASU ... G 171 201 241 301 351 431 521 L 1/2 661 791 852 1052 U G L 3/4 L 5/6 G L 7/8 R 1/2 R 3/4 R 5/6 R 7/8 ØØ Wasserleitung water line [mm] [mm] ASU ... G 28 222 35 272 332 42 442 482 54 602 692 L 1/2 L 3/4 L 5/6 L 7/8 R 1/2 R 3/4 R 5/6 R 7/8 ØØ Wasserleitung water line [mm] [mm] 35 42 54 70** ** Attention: Concerning the unit sizes 852 and 1052, the pipework from the 70mm screw connection must be carried out as pipes of 64mm diameter. ALU ... G 171 201 241 301 351 431 521 L 1/2 661 791 G L 3/4 L 5/6 G L 7/8 R 1/2 R 3/4 R 5/6 R 7/8 ØØ Wasserleitung water line [mm] [mm] ALU ... G 28 222 35 272 332 42 442 482 54 602 692 L 1/2 L 3/4 L 5/6 L 7/8 R 1/2 R 3/4 R 5/6 See drawing on page 66 ! R 7/8 ØØ Wasserleitung water line [mm] [mm] 35 42 54 E/0706/12/61 U G - Version with cooling water control valve (2- and 3-way) ASU ... G 171 201 L 1/2 241 301 G G 351 431 521 661 791 852 1052 G L 3/4 L 5/6 L 7/8 R 1/2 R 3/4 R 5/6 R 7/8 water line [mm] ØØ Wasserleitung [mm] ASU ... G 28 222 35 272 332 42 442 482 54 602 692 L 1/2 L 3/4 L 5/6 L 7/8 R 1/2 R 3/4 R 5/6 R 7/8 water line [mm] ØØ Wasserleitung [mm] 35 42 54 70** ** Attention: Concerning the unit sizes 852 and 1052, the pipework from the 70mm screw connection must be carried out as pipes of 64mm diameter. ALU ... G 171 201 241 301 351 431 521 L 1/2 661 791 G L 3/4 L 5/6 G L 7/8 R 1/2 R 3/4 R 5/6 R 7/8 ØØ Wasserleitung water line [mm] [mm] ALU ... G 28 222 35 272 332 42 442 482 54 602 692 L 1/2 L 3/4 L 5/6 L 7/8 R 1/2 R 3/4 R 5/6 See drawing on page 66 ! R 7/8 ØØ Wasserleitung water line [mm] [mm] E/0706/12/62 35 42 54 U 6.3.2.4 Version GCW In 1-circuit units and 2-circuit units there are 4 water connections in total (2x water inlet, 2x water outlet). ASU ... GCW 171 L 1/2 G 201 241 301 351 431 521 661 791 L 3/4 L 5/6 L 7/8 R 1/2 R 3/4 CW R 5/6 CW R 7/8 ØØcooling Kühlwasser water[mm] [mm] 28 Kaltwasser ØØchilled water[mm] [mm] ASU ... GCW 35 28 222 42 35 272 332 54 42 442 482 54 602 692 852 1052 L 1/2 L 3/4 L 5/6 L 7/8 R 1/2 R 3/4 R 5/6 R 7/8 ØØcooling Kühlwasser water[mm] [mm] Kaltwasser ØØchilled water[mm] [mm] 35 28 42 35 42 54 70** 54 70** ** Attention: Concerning the unit sizes 852 and 1052, the pipework from the 70mm screw connection must be carried out as pipes of 64mm diameter. The entrance for the cooling water piping relates to the option with 2- or 3-way cooling water control valve. Legend: G - cooling water piping CW - chilled water piping See drawing on page 66 ! E/0706/12/63 U 6.3.2.5 Version GE1 ASU ... GE1 171 L 1/2 G 201 241 301 351 431 521 661 791 852 1052 G L 3/4 L 5/6 L 7/8 R 1/2 R 3/4 R 5/6 R 7/8 ØØ Wasserleitung water line [mm] [mm] ASU ... GE1 28 222 35 272 332 42 442 54 482 602 692 L 1/2 L 3/4 L 5/6 L 7/8 R 1/2 R 3/4 R 5/6 R 7/8 ØØ Wasserleitung water line [mm] [mm] 35 42 54 70** ** Attention: Concerning the unit sizes 852 and 1052, the pipework from the 70mm screw connection must be carried out as pipes of 64mm diameter. 6.3.2.6 Version GE2 ALU ... GE2 171 201 241 301 351 431 L 1/2 521 661 791 G L 3/4 L 5/6 G L 7/8 R 1/2 R 3/4 R 5/6 R 7/8 ØØ Wasserleitung water line [mm] [mm] ALU ... GE2 35 222 272 42 332 442 54 482 602 692 L 1/2 L 3/4 L 5/6 L 7/8 R 1/2 R 3/4 R 5/6 R 7/8 ØØ Wasserleitung water line [mm] [mm] E/0706/12/64 35 42 54 See drawing on page 66 ! U 6.3.2.7 Version CW / CW2 ASU ... CW 300 400 500 660 740 900 960 1100 1200 1500 L 1/2 CW CW CW CW CW CW CW CW CW CW L 3/4 CW CW CW CW CW CW CW CW CW CW L 5/6 CW CW CW CW CW CW CW CW CW CW R 1/2 CW CW CW CW CW CW CW CW R 3/4 CW CW CW CW CW CW CW CW CW CW R 5/6 CW CW CW CW CW CW L 7/8 R 7/8 ØØchilled Kaltwasser water[mm] [mm] 35 42 54 70* *Attention: Concerning the unit sizes 960, 1100, 1200 and 1500, the pipework from the 70mm screw connection must be carried out as pipes of 64mm diameter. In units of version CW2 there are 4 water connections in total (2x water inlet, 2x water outlet). ASU ... CW2 330 560 650 950 1200 54 70* L 1/2 L 3/4 L 5/6 L 7/8 R 1/2 R 3/4 R 5/6 R 7/8 ØØchilled Kaltwasser water[mm] [mm] 35 42 *Attention: Concerning the unit size 1200, the pipework from the 70mm screw connection must be carried out as pipes of 64mm diameter. See drawing on page 66 ! E/0706/12/65 U 6.3.2.8 Pipe entrance area - Upﬂow units (DX + CW) At Upﬂow units the supply pipes and cables are introduced from the left or right side through openings in the side wall. connection from the left all dimensions in mm E/0706/12/66 connection from the right 6.3.3 Refrigerant Piping The refrigerant pipelines are only to be connected by an authorised specialist. Comply with the safety notes at the beginning of these operating instructions. We recommend for downﬂow units, in addition to the two shut-off valves in the refrigerant lines at the unit exit, to install a shut-off valve in each line directly outside the unit. Due to the compact unit design the EC-fans in Downﬂow-DX-units are located in a way that, if they ever must be exchanged, accessing the fans via the unit rear side would substantially simplify this measure. As the unit must be moved from the wall for this procedure, the refrigerant circuit must be interrupted. The application of 2 additional shut-off valves simpliﬁes this activity and prevents the disposal and re-charging of refrigerant. Non-return valve (option) Safety valve Stop valve (recommended for downﬂow) Receiver Condenser to expansions valve Solenoid valve Stop valve (recommended for downﬂow) 24V external installation Compressor to evaporator PS- PS+ A/C unit In A-units of the CyberAir series, in contrast to the precedent Modular Line series, no non-return valve is installed upstream the liquid receiver as standard. Only in case of very long pipework from the condenser to the unit and with low outside temperatures it may be useful to install a non-return valve near the condenser to prevent a reverse ﬂow of refrigerant to the condenser when the unit is stopped and to avoid a possible low pressure fault at the unit start. Such a nonreturn valve can be obtained as an option from Stulz. (The C7000 controller provides the feature to adjust a winter start delay of 0-255 seconds. For this time, the monitoring of the low pressure is inhibited.) A long refrigerant line from the non-return valve to the receiver provides an additional buffer to cushion a possible excessive pressure at unfavorable operating conditions. E/0706/12/67 Notes for refrigerant installation and ﬁlling an air conditioning system The refrigerant pipelines are only to be connected by an authorised specialist. Comply with the safety notes at the beginning of these operating instructions. • Connect the pipelines carrying refrigerant to the external condenser. • Evacuate the pipelines between the stop valves in the A/C unit and the condenser (according to 6.3.3.3). • Open the stop valves and ﬁll the refrigerant circuit with refrigerant. For this, the solenoid valve in the liquid line must be energized (24 V AC), for the refrigerant can evenly disperse in the circuit. Perform these activities according to the instructions in this section. All work on refrigeration systems may only be carried out by authorised trained staff or by STULZ customer service 6.3.3.1 Selection of hot gas and liquid line - Establish the shortest route for pipework from the A/C unit to the Condenser. Exceptions only when unnecessary bends are to be avoided. Determine the required pipe ﬁttings/specials between the A/C unit and Condenser. With the aid of table No. 1 on P.70, convert the pressure loss of the individual ﬁttings into equivalent pipe lengths, look up equivalent pipe lengths for pipe specials and ﬁttings, add these to the real pipe lengths. Select the pipe dimensions from diagram No. 1 on the following page corresponding to the calculated overall pipe length and refrigeration output. Precautions for hot gas line, if the Condenser is higher than the A/C unit. - To ensure oil return in ascending hot gas lines, particularly at part load, the minimum refrigeration kW must not fall below the value stated on table 2, p.70, for the corresponding pipe size. An oil separator must be installed in systems with a pipe length above 25 m. Oil traps (even when an oil separator is installed) are to be installed every 5-6 m (sketch 3, p. 73). The horizontal lines must always be routed with a slope towards the condenser. Precautions for liquid lines: With liquid refrigerant, bubbles can form upstream of the expansion valve. This is always the case when the ambient temperature is higher than the temperature of the liquid line (approx. +30°C) upstream of the expansion valve. In this case insulation with Armaﬂex or equivalent material with a wall thickness of 9 mm is recommended for lines outside the unit. A thicker insulation is not required as the insulating effect increases only insigniﬁcantly as the wall thickness increases. Precautions for hot gas lines: Hot gas lines can reach a temperature of up to +80°C and should be insulated inside the building at places, where a possibility of contact exists (risk of burn!). E/0706/12/68 Pipe dimensions and precautions for the routing of refrigerant-conducting lines Diagram No. 1 - Diagrams for designing the refrigerant lines for R407C/R22 Overall pipe length in m Outside diameter in mm Liquid lines depending on the overall pipe lengths and refrigeration outputs. Refrigeration output in kW Overall pipe length in m Outside diameter in mm Hot gas lines depending on the overall pipe lengths and refrigeration outputs. Refrigeration output in kW E/0706/12/69 Table 1: Pressure drop of pipe ﬁttings/specials in metres for equivalent pipe length Bend Copper pipe Angle Outside dia. mm 45° 90° 180° 90° 10 12 15 18 22 28 35 42 0,16 0,21 0,24 0,26 0,27 0,39 0,51 0,64 0,20 0,27 0,30 0,36 0,42 0,51 0,70 0,80 0,53 0,70 0,76 0,87 0,98 1,20 1,70 1,90 0,32 0,42 0,48 0,54 0,61 0,79 1,00 1,20 T-piece 0,20 0,27 0,30 0,36 0,42 0,51 0,70 0,80 Table 2: Selecting the pipe lines Minimum refrigeration outputs which are required for oil transportation in rising pipes of hot gas lines for R407C/R22 at tc (dew point) 48°C. Pipe diameter Refrigeration output kW 15 18 22 28 35 42 4,41 5,17 7,14 10,0 16,58 25,9 Route horizontal pipes with a slope towards the Condenser. Position oil traps every 5 - 6 m. Use oil separator for rising pipe longer than 25 m. E/0706/12/70 6.3.3.2 Installation instructions for routing refrigerant-conducting pipes The following points are to be complied with when routing the pipes: - The measures listed in the chapter notes on safety are to be complied with when routing refrigerant-conducting pipelines. - Routing must be over the shortest routes, taking into account the building situation and customer wishes if these can be agreed from a refrigeration engineering point of view. (involve a specialist in cases of doubt). - Bends and angles are to be avoided wherever possible if it can be routed differently, as these result in pressure drops which reduce the output of the A/C unit. Returns around joists, offsets or the like are to be carried out with 45° bends wherever possible, in accordance with sketch No. 2, P. 73. - Horizontal lines must have a slope towards the Condenser so that oil and condensed refrigerant cannot ﬂow into the system when it is shut down. (Hot lines must be insulated. Exceptions are hot gas lines in the open air which cannot be touched.) - Ascending pipelines must have an oil pocket every 5-6 m and an oil trap at the highest point as shown in sketch no. 3 on page 73. - A non-return valve with damping piston must always be installed, to avoid back ﬂow, in the pressure line if it is not already installed in the unit on the outlet of the A/C unit. - If an oil separator is installed in the system, this must be ﬁlled with the same type of oil as the compressor in accordance with the manufacturer's speciﬁcations. Never route pipelines through rooms such as conference rooms, rest rooms, ofﬁces etc. Pipe mountings are to be provided at least every 2 m. The pipe mountings are to be insulated against vibrations. The ﬁrst pipe mounting behind the A/C unit and upstream of the Condenser should be ﬂexible. So that the pressure lines can expand, the pipe mountings are to be attached at least 1 m from the bend, in accordance with sketch No. 1, P. 73. - All copper pipes which pass through masonry must be insulated in this area so that the pipes are protected from damage and a certain ﬂexibility is retained. - For routing, only copper pipes are to be used which correspond to the country-speciﬁc regulations. Sealing caps or ends added as ﬂux must be meticulously clean and dry and meet the requirements of refrigeration engineering. - Before commencing with routing the pipelines, one should ensure that the pipes are dry and clean inside, by checking whether the sealing caps are seated on the pipe ends and by blowing through the pipes with nitrogen. If the sealing caps are no longer seated on the pipe ends, the pipes must be cleaned with a clean non fraying cloth and a spiral and then blown through with nitrogen to remove the remaining dirt. Furthermore it must be ensured that the remaining pipe is always sealed with a plug after cutting off pipe ends. E/0706/12/71 - Pipes for refrigerant must always be cut to length with a pipe cutter and then brought to the correct inside diameter by slightly expanding or calibrating. Sawing refrigerant pipes is not permitted as the swarf cannot be completely removed and blockages can occur in the control components or the compressor may be irreparably damaged. The same can also occur as a result of contaminated pipes. - If copper pipes are ﬂared, the taper of the tube ﬂaring tool must be coated lightly with refrigerator oil to prevent a burr occurring on the copper pipe during the ﬂaring process which can enter the pipe. In addition the toggle of the pipe ﬂaring tool must be turned in both directions towards the stop so that the ﬂare is not on one side. - Refrigerant-conducting pipes may only be brazed under inert gas (nitrogen) so that no oxidisation occurs on the inside of the pipes which also contaminates pipelines. Improper brazing results in invalidation/non-validation of the guarantee. Nitrogen is used as the inert gas which is blown through the pipe system under slight pressure without inﬂuencing the brazed joint due to pressure. Adequate ventilation of the room is to be ensured for welding and brazing work. Before the ﬁnal connection is brazed, a screwed connection must be released at the appropriate point so that no pressure occurs in the pipe system. After brazing, do not forget to retighten the screwed connection which has been released. Once the pipework installation is ﬁnished, it is mandatory that the system is checked for leaks. This must be carried out as follows: - The system is ﬁlled with dry nitrogen up to the maximum nominal pressure. - The system is shut off, the valve in the system is closed and the nitrogen bottle is removed. - Each connection (including screwed connections) is checked for leaks by brushing on a liquid. In parallel with this check a pressure gauge is connected on which it can again be checked whether the system is leaking, the pressure on the pressure gauge being checked for a reasonable period according to the size of the system. E/0706/12/72 Instructions for the routing of refrigerant-conducting pipes 1000 1000 Correct Mounting the refrigerant pipes in corners Sketch 1 Incorrect Dealing with obstacles Sketch 2 gas liquid Routing pressure lines when the Condenser is higher than the compressor. ca. 5 - 6 m Use oil separator for rising pipe longer than 25m. Sketch 3 liquid max. 5 m gas For height differences of over 5 m the system must be designed so as to guarantee additional subcooling (consult STULZ). Sketch 4 E/0706/12/73 6.3.3.3 Basic principles for evacuating refrigerant systems Vacuum pump The vacuum pump is used in order to remove as much air as possible in sealed systems, so that the moisture contained within evaporates and is extracted by the vacuum pump. (With a suitable vacuum, evaporation already takes place at ambient temperature). When selecting a vacuum pump this must be adapted to the systems to be evacuated (consult a specialist company). Successful evacuation and the associated drying of the system can only be achieved if the vacuum pump with the associated vacuum meter is in proper working order. In addition the evacuation process must be monitored continuously by a ﬁtter. Pressure measurements The pressure which prevails in the refrigerant circuit, is measured by pressure gauges. 2 pressure gauges are required, one on the suction side for measuring the evaporator pressure and the associated evaporation temperature, the other for the high pressure side for measuring the condensation pressure and the associated condensation temperature. Condition of equipment for evacuating For satisfactory evacuation it is essential to use a satisfactory and clean vacuum pump. The connections of the vacuum pump must always be sealed when it is not being used, because moisture, dirt particles or similar which enter can result in damage to the vacuum pump so that satisfactory evacuation can no longer be achieved. Evacuating instructions Proceed as follows when it is ensured that the system is sealed: - Let out the test pressure down to 1 bara = 0 barp on the pressure gauge. Connect the vacuum pump to the high and low pressure side of the system in accordance with drawing on the next page via a pressure gauge station. Extract on the high and low pressure side down to approx. 0 bar. Fill the system with nitrogen (not refrigerant because of environmental pollution) to 1 bar and extract again down to approx. 0 bar. This process must be carried out at least 3 times, ﬁlling with nitrogen twice. Air and moisture is extracted from the cooling system due to evacuation. If contaminants and larger quantities of water remain in the system - this can happen if the system has stood open for a long period, or the pipes to be processed were not sealed - proceed as follows: - Evacuate the system several times until the pressure gauge stays on 0 bar permanently. - The system is also to be run dry during operation by replacing the drier several times. Technical clariﬁcations Absolute pressure [bara] Atmospheric pressure: Pressure [barp] Vacuum: E/0706/12/74 Atmospheric pressure + pressure Pressure which is caused due to the weight of the atmosphere (approx. 1 bar) Pressure which prevails in the cooling system. Condition of approx. 0.02 - 0 bara, in a sealed system. The difference to ambient pressure is approx. 0.98 - 1 bar. Basic principles for evacuating refrigeration systems Pressure line to condenser to evaporator Pressure side Suction side 8 Pressure measuring 6 station Refrigerant bottle Vacuum meter 1 7 2 3 4 5 9 Explanation of the evacuation process with reference to the numbers overleaf. ﬁlling station with programmable scale Vacuum pump E/0706/12/75 Process Values Operation 1. Preparation ——— Open the valves (1) to (5). Close the valve (9). 2. Evacuation 70 mbar Operate the vacuum pump until the value of 70 mbar is displayed on the pressure gauge. Stop the vacuum pump after evacuation. 3. Breaking vacuum 0,98 bar Close the valves (3), (4) and (5). Open the valve (9) and ﬁll refrigerant whilst the high pressure gauge (6) and the low pressure gauge (7) are observed. When the value of 0,98 bar is reached, close valve (9). 4. Waiting time 5 minutes ——— 5. Disposal ——— Disposal of refrigerant in accordance with the valid country-speciﬁc regulations. (e.g. using disposal station for FC) 6. Repeat 2. - 5. 1x as the above items 7. Last evacuation 1-2 mbar as item 2 8. Completion ——— Close the suction side valves (3), (4) and (5). Stop the vacuum pump. 9. Filling refrigerant As required by Open the valve (9). Pre-ﬁll the liquid system receiver with refrigerant. The correct amount to be ﬁlled must be determined during the operation of the compressor. Close all valves after completing the ﬁlling process. For reference see the illustration on the previous page. E/0706/12/76 6.3.3.4 Instructions on ﬁlling systems with R22 and R407C refrigerants - Systems without refrigerant receiver or sight glass must always be ﬁlled according to weight. - Systems with refrigerant receiver should be ﬁlled according to weight but can also be ﬁlled by checking the sight glass. Comply with the notes on safety listed in this section and the country-speciﬁc regulations and notes on safety. If you use the refrigerant R407C, please note that R407C is a 3-compound mixture. Take care that you add refrigerant in a liquid state, as the ratio of the refrigerant components changes if one of the three compounds passes over into the gaseous phase. - Before the system is ﬁlled with refrigerant, it must be clean and dry inside. (Refer to evacuation instructions). Then proceed as follows: The standing refrigerant bottle is connected to the suction side via a pressure gauge station. For this the bottle stands upright on scales. The weight is noted shortly before ﬁlling. The speciﬁed amount of refrigerant is now added when the system is operating. During ﬁlling the pressure in the refrigerant bottle will adjust to that of the system. Filling is then no longer necessary. This can be seen by the icing up of the bottle or by checking the pressure gauge. The bottle valve must then be closed until a pressure increase has taken place which is above the suction pressure of the system. This process can be accelerated if the bottle is wrapped in hot moist towels or it is placed in a water bath at a maximum temperature of 50°C. Never heat up the refrigerant bottle with a naked ﬂame as there is a risk of explosion. The refrigerant bottle must not be stood on its head otherwise any contamination from the bottle enters the system. When the ﬁlling process is complete, the system must be sealed carefully so that no refrigerant can escape. Only then may the bottle with ﬁlling station be removed. Systems with refrigerant collector can be ﬁlled by observing the sight glass. The system is correctly ﬁlled when no more bubbles can be seen in the sight glass. Nevertheless scales should also be used here so that the amount of refrigerant required is recorded. For R134a: Refer to the special requirements of the refrigerant manufacturer. Hazards with incorrectly ﬁlled systems Overﬁlling Overﬁlling the system inevitably results in a high condensing pressure. The compressor can be completely destroyed as a result. Underﬁlling A system which is insufﬁciently ﬁlled results in the following: Output reduction due to evaporation temperatures which are too low. Excessive overheating temperature which can result in compressor damage. E/0706/12/77 6.3.4 Water piping External water circuit To seal the water circuit you must connect the unit to a chilled water ring mains, which contains for the generation of cold water either a chiller or a dry cooler or cooling tower. If the water quality is insufﬁcient, we recommend the additional installation of a ﬁne mesh strainer. For an efﬁcient protection against corrosion, the anti-freezing agent is mostly sufﬁcient, which should be used if the water temperature passes under 5°C or if the outside temperature is less than 0°C. We recommend to add the following quantities of ethylenglycol (indicated as percentage of weight of the water quantity) : water or outside air temperature ethylenglycol from +5 to -5°C from -5 to -10°C from -10 to -30°C correction coefﬁcient for the pressure drop in the water circuit when using ethylenglycol 10% 20% 30% 1.50 1.45 1.40 1.35 1.30 1.25 50% 1.20 40% 1.15 30% 1.10 20% 1.05 10% -10 -8 -6 -4 -2 0 2 4 6 8 average chilled water temperature (°C) correction coefﬁcient for the pressure drop in the water circuit when using propylenglycol 1.8 1.7 1.6 1.5 1.4 50% 1.3 40% 1.2 30% 1.1 20% 10% 1.0 -10 -8 -6 -4 -2 0 2 4 6 average chilled water temperature (°C) E/0706/12/78 8 For connecting the unit to the external system remove the protective caps from the ﬂanges of the water pipes. Water remaining from the test run may escape when the protective caps are removed. The water connections are executed in the shape of a screw connection with a soldering connection. Solder the part with the external thread of the connection to the external pipes and screw the lines of the external system to the lines of the unit respecting the designation at the unit. Union screwed connection If any seals are missing, these must only be replaced by glycolresistant rubber seals. Insulate the water pipes with the insulating material supplied, to prevent the introduction of ambient air heat as well as possible. Screw the water pipes of the A/C unit together with the local water pipes of the dry-cooler or the chiller. Fill and bleed air from the cooling water circuit by means of the ﬁlling connections and the schrader valves for bleeding (see refrigerant diagram). Durchmesser Diameter Rohrgewinde Pipe thread S 15 G 3/4 30 16 G 3/4 30 22 G1 37 28 G 1 1/4 46 35 G 1 1/2 53 42 G2 65 54 G 2 1/2 82 70 G3 95 Water pipe insulation S: width across ﬂats E/0706/12/79 6.3.5 Condensate drain connection Syphon installation Ensure that there is a sufﬁcient height difference between the fan pan and the upper bow of the syphon or the highest part of the drain tube, in order to avoid a water column in the drain syphon caused by the pressure in the suction area of the A/C unit, which prevents the draining of the condensate water Example: Static pressure in the suction area : -300Pa h = p / (ρ • g) h = -300Pa / (1000kg/m³ • 10m/s²) h = -3 cm If the height h is smaller than 3 cm with a pressure of 300 Pa in the suction area, a water column rests in the drain, the water is not transported and ﬁlls the fan pan. This water can be drawn dropwise in the fan or can drop out of the unit if the pan is full. h >10 cm unit limit possible installation at the customer side: funnel Connect the condensate water drains to the local waste water system. Comply with the regulations of the local water supply authority. E/0706/12/80 6.4 Electrical connection Ensure that the electric cables are de-energized. The electric cables are only to be connected by an authorised specialist. The unit must dipose of an effective earthing. The power supply system on site and the pre-fuses must be designed for the total current of the unit (see technical data). Route the electric cable into the electrics box from below and connect them to the master switch in accordance with the wiring diagram (part of the unit documents). Make sure that the phase rotation is correct, the rotating ﬁeld must turn right. Otherwise the unit does not cool and the compressor will overheat and be damaged. Electricalbox insertion for the power supply cable Downﬂow DX unit Upﬂow DX unit The electrical connection of the A/C unit must be effected according to the following regulations: - Guide-line for the security of machines (CEE 98/37/EG) - Low voltage guide-line (CEE 73/23) - Electromagnetical interference suppression regulation (CEE 89/336) - Regulations for technical equipment according to national decrees For use of leakage-current (FI) circuit breakers, EN 50178 5.2.11.2 must be taken into account. Only type B pulse-current FI circuit breakers are permitted. FI circuit breakers do not provide protection against bodily harm during operation of the unit or frequency converters. Make sure that the power supply corresponds to the indications on the rating plate and that the tolerances according to the "Application limits" are not exceeded. In addition to this, the asymmetry of phase between the conductors may amount to 2% maximally. The asymmetry of phase is determined by measuring the voltage difference between the phase conductors. The average value of the voltage differences may not exceed 8 V. E/0706/12/81 Insertion of the power supply cable at CW units 1. cabinet size 1,2 - Downﬂow 2. cabinet size 1,2 - Upﬂow 3. cabinet size 3-5 - Downﬂow 4. cabinet size 3-5 - Upﬂow 3. 1. 2. 4. System with external pump GE1 Choose a power switch and a contactor in respect of the pump capacity. A power switch and a contactor can be located in the electric box. Caution! The power supply of the pump can not be obtained via the master switch as the master switch is designed according to the current consumption of the standard unit. The pump must be individually provided with safety elements. Design the wiring between the controller and the contactor with reference to the connection diagram for the controller and the wiring between the pump and power switch according to the manufacturer's notes. System with internal pump GE2 In this case the pump is already electrically and mechanically connected and ready for use. E/0706/12/82 Pump control GE2 The C7000 controller controls the pump including the monitoring of a pump alarm. During summer operation, the water circuit section with the GE-pump and the free cooling coil is cut by electrically controlled stop valves, during winter operation the section with the G-pump and the condenser is cut this way. in mixed operation mode no part of the water circuit is cut. 1. Summer operation The stop valve upstream the GEpump is closed. The water circuit section which is represented with dashed lines is shut. PC GE-coil condenser Gpump PC GEpump GE-coil condenser TIC Gpump 2. Winter operation The stop valve upstream the G-pump is closed. TIC GEpump In general, an individual pump should be provided for the external water circuit. In an individual case, the available head pressure of the internal pumps can be sufﬁcient to operate the external water circuit system. However, this must be clariﬁed with the technical support. If GE2 units are to be inserted in existing hydraulic systems, please contact the technical support of the Stulz headquarter in Hamburg. E/0706/12/83 7. Commissioning The unit must be installed and connected in accordance with the chapter on "installation" before initial commissioning. • • • • • Make sure that the master switch is off and the unit is de-energized. Open the electrical compartment door of the unit using the key provided. Check whether all power switches and control-circuit fuses in the electrical section of the unit are switched off. Check the the tight connection of the power supply cables and the terminals including the PE-terminals. Verify the smooth function of the contactors. Electrical compartment Power switch off Power switches XD 2 F41 F42 1 4 X A X 6 2 T 1 T 2 T 3 X D F01 1 F31 1 F70 1 F71 1 F72 1 F73 1 4 B 6 L 1 L 2 T 1 T 2 T 3 X B F91 1 L 3 T01 F... 1 250VA 1 B06 0 0 1 3 5 0 0 0 0 0 0 1 L 1 L 2 L 3 3 5 0 Block 0 200-480V L 1 L 2 L 3 1 2 1 11 42 2 1 2 4 Control-circuit fuses A 1A 2 Q41 C30 Q31 Q42 C12 C30 Q70 C12 Q71 C12 Q72 C12 Q73 C12 Q... Q... C09 C09 B05 S 2 S 5 S 3 S 4 K10 TAM S01 T70 1 2 3 4 5 6 7 8 91 Halbleiterrelais, stetige Regelung E-Heizung X0-PE 1 0 N Q01 80/100A K02 A 1 A 1 A 1 A 1 A 1 A 1 B 1 B 1 B 1 B 1 B 1 B1/GND PE1 C 1 E 1 E 1 E 1 1 2 3 5 7 8 9 1 0 1 2 1 4 1 6 1 7 1 9 2 1 2 2 X 2 Master switch Do not turn the adjustment screw beyond the end of the calibrated scale range, as it may result in overheating and short-circuit at the consumer or in the destruction of the power switch. non-calibrated range • • Switch on the A/C unit at the master switch. Switch on the control-circuit fuses and the power switches of the fan and the compressor in sequence. The controller is now supplied with power, so you can use it for adjustments. Make sure that the heat rejecting system is operating. A - air-cooled condenser G, GE1, GE2 - dry cooler CW, CW2 - chiller ACW - air-cooled condenser + chiller GCW - dry cooler + chiller E/0706/12/84 Switching on power switch • • • • • • Adjust the desired return air temperature at the controller. Start the A/C unit by pressing the Start/Stop-key on the controller. Check after 20 minutes operation, whether bubbles are visible in the sight glass of the liquid line. If this is the case, refrigerant might have escaped by a leak. Check the circuit on leaks, eliminate these and top up the circuit with R407C in regard of the chapter "Maintenance". Check the oil level at the compressor in respect of the right level. The oil level should be between the lower quarter and the middle of the sight glass. Check the current consumption of the compressors and the fans comparing it with the values of the technical data. Instruct the operational staff of the controller manipulation (refer to the controller manual). Controller C7000, Start/stop-key Sight glass Oil level at the compressor E/0706/12/85 8. Maintenance 8.1 Safety instructions All maintenance work is to be carried out under strict compliance with the country-speciﬁc accident prevention regulations. In particular we refer to the accident prevention regulations for electrical installations, refrigerating machines and equipment. Non-compliance with the safety instructions can endanger people and the environment. Maintenance work is only to be carried out on the units by authorized and qualiﬁed specialist staff. Procedure instructions Work on the system must always only be carried out when it is shut down. To do this, the unit must be switched off at the controller and at the master switch. A „DO NOT SWITCH ON“ warning sign must be displayed. Live electrical components are to be switched to de-energized and checked to ensure that they are in the de-energized state. Some veriﬁcations must be effected with the unit in operation (measuring the current, pressures, temperatures). In such a case the unit must only be switched on at the master switch after all mechanical connections have been carried out. The unit must be switched off immediately after the measuring procedure. Warning notes! When the master switch is switched on and the controller is stopped the power contactors are live, even if the components are not operating. At the fan contactor, dangerous voltages occur. Do not open the unit within the ﬁrst 5 minutes after disconnection of all phases. Be sure that the unit is being isolated. In units with 2 or 3 fans dangerous charges of >50µC can occur between AC line terminals and PE after disconnection. The electronics housing can get hot. The fans have an operation delay after the unit is stopped ! (Risk of injury) 8.2 Maintenance intervals Component Maintenance interval monthly Refrigerant circ. Refrigerant charge HP/LP switch Sight glass Compressor Expansion valve Unit in general Electrics Mechanics E/0706/12/86 half-yearly yearly x x x x x Air circuit Heat exchanger Fan Water circuit Tightness Condenser quarterly x x x x x x 8.3 Refrigerant circuit Refrigerant charge - Quantity and Purity Quantity - Check the sight glass and the LP switch. An unsufﬁcient charge causes the formation of bubbles in the sight glass or in extreme cases the triggering of the LP-switch. An operation with an unsufﬁcient refrigerant quantity over a longer period leads to a reduction of cooling capacity and to high superheating temperatures, which have a disadvantageous effect on the compressor lifetime. If a leak is detected: • • • • • • • • let out the refrigerant in a collecting device down to a pressure of 1 barabsolut connect a vacuum pump via a pressure gauge station on the high and low pressure side extract the refrigerant by the vacuum pump (not by the compressor !) to approx. 0 barabsolut. dispose the refrigerant according to the national regulations ﬁll the circuit with nitrogen to 1 barabsolut repair the leak the circuit has to be run dry by several (at least 3x) ﬁllings and extractings of nitrogen, eventually change the ﬁlter drier. ﬁll with R407C according to weight (see technical data) R407C must be charged in a liquid state, in order that the composition of the refrigerant does not change. Quantity - Check the HP switch An overﬁlling of the circuit makes the condensation pressure rise and by that the power consumption of the compressor. In the extreme the HP-switch triggers. Purity - Check the sight glass and the ﬁlter drier. Bubbles in the sight glass indicate that the charge is unsufﬁcient or that the ﬁlter drier is clogged. A pollution of the ﬁlter drier, whose origin task is to clear the refrigerant from impurities and humidity, can be detected by a temperature difference upstream and downstream the ﬁlter drier. Compare the colour indicator in the centre of the sight glass with the outer ring scale. purple to blue ---> ok. rose to red ---> humidity critical. With too much humidity in the circuit, the expansion valve can freeze. In addition to this the ester oil in the compressor, which comes in touch with the refrigerant, takes up humidity and loses its ability to lubricate. In this case the refrigerant must be completely evacuated and recharged according to the above described evacuation instruction. Sight glass E/0706/12/87 Compressor In the compressor there is an ester oil charge, which does not have to be renewed under normal operation conditions and holds out for the unit's lifetime. However, it is possible that the ester oil, as it reacts hygroscopically, has taken up humidity of the air after repeated recharging of the refrigerant circuit due to repair works. The interaction between ester oil and water results in the formation of acid. Owing to a hyperacidity, corrosive processes take place inside the compressor. In this case the ester oil should be exchanged. The oil level can be checked by looking at the sight glass of the compressor. Expansion valve The refrigerant circuit is equipped with a thermostatic expansion valve with pressure compensation line, which controls the superheating in the evaporator. The superheating is adjusted to 7 K at the factory and may not be modiﬁed. The expansion valve can freeze, if the humidity in the system is excessive. Do not thaw by soldering ﬂame, danger of explosion ! Thaw with moist warm cloth. Check the sight glass. 8.4 Air circuit Heat exchanger (Evaporator / GE/CW-coil) The heat exchanger consists of copper tubes with aluminium ﬁns. If refrigerant leaks occur, they should be searched for at the heat exchanger. Beyond that, the heat exchanger is exposed to the air pollution, the particles of which settle at the ﬁns and reduce the heat transmission the same as raise the air resistance. The latter shows when the fan current increases. The heat exchanger can be cleaned by pressurized air which has to be blown opposite to the normal air ﬂow direction along the ﬁns. Do not distort the ﬁns while cleaning, this also increases the air resistance ! Fan The bearings of the fans are lifetime lubricated and do not need maintenance. Check the operation current. An increased operation current indicates either a higher air resistance by a clogged pre-ﬁlter or a winding short circuit in the fan motor. The fans are speed controlled in dependance of the required cooling capacity. You can manually modify the speed at the controller for test purposes, so as to compare the measured current with the values on the pages with the technical data or with those of the planning tool. E/0706/12/88 8.5 Water circuit Tightness Check the water circuit visually for tightness. Beyond that a level indication at the storage tank, if existant, can give information about changes of the water quantity. A lack of water in the circuit is replaced by air, which reduces the heat capacity of the chilled water circuit and is detrimental to the pump. Condenser (only at G, GE1, GE2, GCW) Check the water side pollution of the plate condenser by comparing the cooling water inlet temperature to the outlet temperature. If the difference is less than 3 K, it indicates a limited heat transmission and thus pollution. Another possibility to verify this consists in the comparison of the outlet temperature with the medium condensation temperature (by measuring the condensation pressure at the high pressure side of the compressor). If this difference exceeds 7 K, the condenser is probably polluted. In this case the condenser has to be cleaned chemically. 8.6 Unit in general Electrics Check the connection terminals for tight ﬁxation when the unit is installed and once again after an operation time of 30 days. Mechanics Clean the unit's inside with a vacuum cleaner. Clean pipes simplify the search for leaks. Check the pipes, the compressor and the condenser for a tight seat. Vibrations of pipes and circuit components can result in leaks. Check also the insulation of the water piping. Condensing air humidity on cold water pipes means a loss of cooling capacity. 8.7 Competences Repairs on the refrigerant circuit (tightness, ﬁlter drier exchange) trained refrigeration technician Repairs on the main components of the refrigerant circuit (compressor, expansion valve, condenser, evaporator) Stulz service technician Repairs on the water circuit (tightness) trained refrigeration technician Repairs on the electrics trained electrician E/0706/12/89 9. Dismantling and disposal The A/C unit can only be dismantled by qualiﬁed specialists. Switch off the A/C unit at the controller and at the master switch. Switch off power conducting cables to the unit and secure them against being switched on again. Disconnect the A/C unit from the de-energized network. Dispose of the refrigerant in the unit in accordance with the disposal and safety regulations applicable on site The refrigerant may not be discharged into the atmosphere, but must be returned to the manufacturer, if it is not reused. The ester oil in the compressor must also be disposed. As it contains dissolved refrigerant, it can not be disposed like usual oils, but must be returned to the oil manufacturer. Disconnect the depressurized refrigerant pipes from the external system (version A/ACW). If glycol or similar additives had been used, this liquid also has to be collected and disposed in an appropriate manner and may under no circumstances be introduced in the local waste water system. Disconnect the unit from the external water circuit by closing the shut-off valves and drain the water circuit of the unit (version G/GE1/GE2/GCW/CW/CW2). Disconnect the depressurized cooling water pipes of the unit from the external system. Move the unit, as described in the chapter "transport", with a lifting device of sufﬁcient load-carrying capacity. Dispose of the A/C unit in accordance with the disposal and safety regulations applicable on site. We recommend a recycling company for this. The unit basically contains the raw materials aluminium (heat exchanger), copper (pipelines, wiring), and iron (condenser, panelling, mounting panel). E/0706/12/90 10. Options 10.1 Steam humidiﬁer The steam humidiﬁer is an optional extra for your A/C unit. It is installed complete and integrated within the function and method of operation of the A/C unit. Details concerning the connection assignment for the power supply can be found in the electrical diagrams in the appendix. We recommend the installation of an Aqua-stop valve in the water supply of the humidiﬁer. In addition to this, the room, in which the A/C unit with the humidiﬁer is installed, should be equipped with a water detection system. 10.1.1 Description The humidiﬁer uses normal mains water for the production of steam. The conductivity of the water should be within the range of min. 300 to max. 1250 µS/cm. The water is converted directly into steam by means of electrical energy in a steam cylinder with electrode heating. The steam is introduced into the airﬂow via the steam throttle. Due to the evaporation the water level in the cylinder falls. The current consumption is reduced, as the electrodes are then immersed less in the water. With a sinking water level the mineral concentration in the cylinder increases, as the minerals do not evaporate. The current is kept by the control between two limit values (IN+10%, IN-5%). When the lower limit value is reached, the inlet valve opens. Now fresh water is mixed with residual water, which has a high mineral concentration. After several evaporation and ﬁlling cycles, the mineral concentration has increased in such a way, that the current reduction due to evaporation and falling water level takes place quite rapidly. When a certain limit value of current reduction is exceeded, the drain valve is opened at the moment, when also the lower current limit value is reached, and ﬁnally the cylinder is completely drained. The ﬁlling phase is automatically interrupted if the sensor electrode is contacted due to the high water level in the steam cylinder. This may happen in the start-up phase with a new steam cylinder. 10.1.2 Technical data Four different sizes of humidiﬁer are installed in STULZ A/C units. You can see which humidiﬁer is installed in your unit from the following table. Cabinet Baugröße size Befeuchtungsleistung Humidifying capacity DX DX 1 kg/h 2 5 Befeuchtungsleistung Humidifying capacity CW CW kg/h 3 4 5/8 5/8 5 5/8/10/15 5/8/10/15 Steam humidiﬁer Hum.capacity[kg/h] Bef.leistung [kg/h] Nom. Nennstrom current[A] [A] Nennleistung Nom. power [kW] [kW] 5 5,4 3,75 8 8,7 6,0 10 10,8 7,5 15 16,2 11,25 E/0706/12/91 Supply water - application limits Temperatur Temperature C° max. 40 Pressure Druck bar 1-8 Water properties and ingredients min max 7 8,5 300 1250 * hydrogen ions speciﬁc conductivity (at 20°C) σR, 20°C µS/cm total dissolved solids TDS mg/l * dry residue at 180°C R180 mg/l * * total hardness mg/l CaCO3 100 400 iron + manganese mg/l Fe + Mn 0 0,2 chlorides ppm Cl 0 30 silica mg/l SiO2 0 20 residual chlorine mg/l Cl¯ 0 0,2 calcium sulphate mg/l CaSO4 0 100 metallic impurities mg/l 0 0 solvents, diluents, soaps, lubricants mg/l 0 0 2 * values depending on speciﬁc conductivity; in general: TDS ≅ 0,93 • σ20; R180 ≅ 0,65 • σ20 2 not lower than 200% of chlorides content in mg/l of Cl¯ 10.1.3 Supply connections The steam humidiﬁer is installed and electrically connected in the A/C unit. The local regulations of the water supply company are to be complied with when making the hydraulic connection. Water supply The water connection is made from the cold water mains and is to be equipped with a shut-off valve. It is recommended to install a ﬁlter to retain solid particles of pollution. The humidiﬁer can be connected directly to the mains by a threaded tenon of 3/4" when the water pressure is between 1 and 8 bar. The pipe should have a diameter of at least 6 mm. If the line pressure is more than 8 bar, the connection must be made via a pressure reducing valve (set to 4-6 bar). In each case it is to be ensured that the manufactured water pipe upstream of the connection to the humidiﬁer is ﬂushed properly. We recommend only using copper pipes. The water supply temperature must not exceed 40°C. Do not treat the water with softeners ! This could result in corrosion of the electrodes and in the formation of foam with considerable operational interruptions. Prevent: 1. the use of well water, process water or water of cooling circuits and generally chemically or bacteriologically polluted water; 2. the addition of disinfectants or anti-corrosion liquids, as these are very irritating for the respiratory ducts. E/0706/12/92 Water drain The drain is achieved by a plastic hose and is routed out of the unit by means of the openings in the unit provided for this purpose (refer to 6.3.1 supply connections). When creating the drain, attention is to be paid to provision for cleaning. As the water drain is depressurized, we recommend routing the drain hose directly into an open collector funnel to ensure free discharge. The drainage pipe should be routed to the sewerage system with sufﬁcient gradient (at least 5%) and should be located approx. 30 cm below the humidiﬁer. Attention is to be paid to temperature resistance when plastic pipes are used. If copper pipe is used, it must be earthed. For the drainage pipe an inside diameter of 32 mm is recommended, however the minimum inside diameter should not be less than 25 mm. 10.1.4 Commissioning As soon as the controller requires the humidiﬁer function, the heating current is switched on; after approx. 30 seconds water is fed into the steam cylinder through the inlet valve which opens and fully automatic operation begins. A condition is the open shut-off valve in the water supply. IMPORTANT NOTICE: After the water pipes have been connected, the supply piping must be ﬂushed for approx. 30 minutes, where the water is directly conducted into the drain, without letting it ﬂow into the steam humidiﬁer. This way residues or substances of the installation process are removed, which otherwise could block the ﬁll valve and cause foam during the boiling process. Decommissioning the humidiﬁer The steam cylinder is to be emptied if the humidiﬁer has been out of operation for a longer period (e.g. in summer, decommissioning the air conditioning system etc.) (see 10.1.6 Maintenance - Drainage). E/0706/12/93 10.1.5 Operation The steam humidiﬁer is controlled and monitored by the controller. No further operating measures are required for continuous operation. However, you can always vary the humidiﬁer output, by operating the DIP-switches A3/4, which are located on the humidiﬁer printed circuit board in the electrical section of the A/C unit. 3 ON 4 100 % humidiﬁcation capacity OFF 3 ON 4 75 % humidiﬁcation capacity OFF 3 ON 4 50 % humidiﬁcation capacity OFF 3 ON 4 The humidiﬁer operation is indicated by a green LED. From the yellow LED you can see the state of operation of the humidiﬁer (see diagram 1,2). The red LED indicates if an alarm is active (see alarm table). You can also manually drain the steam cylinder (see 10.1.6 Maintenance). The position of the TA RATEswitches 1-4, the DIP-switches A2 and B2 is not to be changed under no circumstances. For this reason the switches are sealed. 20 % humidiﬁcation capacity OFF Power supply 24 VAC G/G0 manual drainage drain valve ﬁll valve high level/foam sensor conductivity sensor external TAM green LED yellow LED red LED immersed electrodes max. 5A ﬁg. 1 RS485 alarm relay humidity sensor DIP A2: Alarm relay status ON 1 2 Relay energized (contact closed), when at least 1 alarm is active, otherwise not energized (contact open). 1 2 Relay not energized (contact open), when at least 1 alarm is active, otherwise energized (contact closed). OFF ON OFF E/0706/12/94 remote ON/OFF external controller DIP-switch „B“ : Auxiliary functions and automatic drain timings ON 1 2 3 4 DIP B1: complete drainage after 7 days without any humidiﬁcation request ON: function disabled OFF (default): function enabled 1 2 3 4 DIP B2: automatic drainage with electrodes powered/not powered ON: electrodes powered during automatic drainage OFF (default): elctrodes not powered 1 2 3 4 DIP B3: automatic drainage when request is reduced by at least 25%. ON: new humidiﬁcation capacity achieved by steam cycles OFF (default): 1. new humidiﬁcation capacity is achieved by steam cycles, if the request is reduced by less than 25%. 2. automatic drainage, if the request is reduced by at least 25% OFF ON OFF ON OFF 1 2 3 4 ON OFF DIP B4: disabling of the pre-alarm and the warning for wornout cylinder (see alarm table 2) ON: warnings are never displayed. OFF (default): warnings are displayed when the cylinder is worn out. DIP B5-6: automatic drainage time ON 5 6 time = default OFF ON 5 time = default - 30% 5 time = default + 33% OFF 5 ON 8 threshold = default 7 8 threshold = default - 30% OFF ON 7 8 threshold = default + 33% OFF 6 time = default + 66% 7 OFF 6 OFF ON ON 6 OFF ON DIP B7-8: evaporation time threshold ON OFF 7 8 threshold = default + 66% Change the default adjustment only after conﬁrmation of the STULZ technical support. The dip-switches serve to adapt the drain cycle to extreme water conditions beyond the previously described limit values. E/0706/12/95 Diagram 1: Steam production: yellow LED - transient production "short ﬂashing" steam < 1% time 1-19% time 20-29% time 90-99% time Diagram 2: Steam production: yellow LED - constant production "long ﬂashing" steam < 1% time 1-19% time 20-29% time 90-99% time 100% time The yellow LED stays off when no steam is produced, whereas it stays continuously on at 100% of the nominal production. When steam is being produced at a transient production rate while approaching the steady-state production, the yellow LED is quickly turned on and off to produce 2 Hz-pulse sequences which are related to the actual steam production as shown in diagram 1. When the steady-state production is achieved, the yellow LED is slowly turned on and off to produce 0,5 Hz-pulse sequences which are related to the actual steam production as shown in diagram 2. Each pulse sequence is separated from the following by a 3-second delay, so that the user can count the pulse number of a sequence and determine, using the diagram, the actual humidiﬁcation capacity. E/0706/12/96 10.1.6 Maintenance Please switch off the A/C unit at the controller and the main isolator before starting work and put the power circuit breaker F70 in the electrical box to position 0! The following work and checks can be carried out: - check steam hoses, condensate hoses, water hoses and other parts of the humidiﬁer for external effects or wear. - Flush out the water drain. Replacing the steam cylinder The steam cylinder needs replacing if the electrodes are so highly insulated due to the increasing calciﬁcation or furring that the water level in the steam cylinder constantly touches the sensor electrode. The specially constructed water ﬁlling beaker provides additional safety here, excessive water being routed to an overﬂow and being able to drain away there. Warning note! The temperature of the discharged water is approx. 60°C during normal operation but can reach 100°C brieﬂy, if the steam cylinder is emptied manually during maintenance work. The steam cylinder should be allowed to cool down slightly before removal. If the alarm code 11x long on the humidiﬁer printed circuit board in the electrical section (also refer to Alarm table 2) occurs repeatedly, the steam cylinder has worn out and must be replaced. The life of a steam cylinder depends on the operating period and the hardness of the water. Manual drainage By means of a switch on the humidiﬁer board, you can manually drain the cylinder. Put the switch into position "DR" to drain the humidiﬁer. After the drainage the switch must be reset to position "ON", otherwise no humidiﬁcation can take place. Position "ON" Position "DR" Switch off the power supply circuits to the humidiﬁer before continuing the work! The steam cylinder can be unscrewed from the mount after releasing the hose clamp, pulling off the steam hose and disconnecting the electrical plug on the cylinder. The new steam cylinder is installed in the reverse sequence. The humidiﬁer is re-started in accordance with the recommendations of the chapter "10.1.4 Commissioning". E/0706/12/97 10.1.7 Malfunction causes / Remedy Alarm: Humidiﬁer defect The humidiﬁer alarm is received by the controller and can be requested according to the equipment. C7000-control system: C7000 plus-terminal: C7000 advanced terminal: no display (display only externally) indication on the display indication on the display In the event of this signal on the controller, please look for the exact cause of the fault on the humidiﬁer printed circuit board in the electrical section of the A/C unit. If an alarm has been raised, the red light-emitting diode displays a ﬂashing alarm code. The meaning of the alarm codes can be seen in the alarm table 2. Repairs to the electrical components are only to be carried out by authorized trained staff or by STULZ Customer Service Department. Diagram 3: Alarms: red LED - "short ﬂashing" no alarm time 1x ﬂashing time 2x ﬂashing time 9x ﬂashing time Diagram 4: Alarms: red LED - "long ﬂashing" no alarm time 1x ﬂashing time 2x ﬂashing time 9x ﬂashing time E/0706/12/98 Alarm list Table 1 - Alarm types Type Description Reset (if alarm cause has been removed) Blocking CP-card stops humidiﬁer. manual: to restart, turn the cpcard off and then on again. Disabling CP-card stops humidiﬁer. • automatic • manual: to restart, turn the cp-card off and then on again. Note: the distinction between the automatic and manual reset is shown in the table below. Warning CP-card does not stop humidiﬁer. Red LED Alarm codes: each code is displayed in sequence. The codes are displayed even if the alarm causes have been removed; to stop displaying them, turn the cpcard off and then on again. Alarm relay The relay is normally open or normally close depending on DIP A2. The relay action is cumulative: • contact is closed (opened), if at least 1 alarm is active. • contact is opened (closed), if: - all alarm causes have been removed. - all alarms have been reset, either manually or automatically. Note: each alarm is not assigned to the relay (see table below) • automatic Table 2 - Alarms Type Alarmrelay manual active Red LED Description & Causes ﬂashes 2xshort Electrode over-current 1. water conductivity too high (usually when starting after a short stop) 2. high water level due to drain valve malfunction 3. high water level due to ﬁll valve leakage 4. electrode malfunction Remedy 3xshort No voltage at the electrodes: with the unit on, no steam is produced. 1. Check the external command signal: type (V or mA)? Value? blocking Connections? 2. Switch off the unit and disconnect it from the mains: check the internal electrical connections. manual active 4xshort Internal memory error blocking 1. Download the proper default conﬁguration via HumiSet. 2. If the problem persists, contact the STULZ customer service. manual active 5xshort High conductivity of the supply water 1. Switch off the unit and clean the conductivity sensor elec- blocking trodes; 2. If the problem persists, change the source of supply water or install a suitable treatment system (demineralisation, even partial). Note: the problem will not be solved by softening the supply water. manual active blocking 1. Drain part of the water and re-start. 2. Verify that the drain valve is properly working. 3. Check for any leakage of the ﬁll valve when the humidiﬁer is switched off. Reset E/0706/12/99 Table 2 - Alarms (continued) Red LED Description & Causes ﬂashes 2x long Cylinder depleted Alarmrelay warning manual not Do maintenance and/or replace the cylinder. active 1. Check that the ﬁll pipe from the mains to the humidiﬁer and disabling manual active the internal pipe are not blocked or bent and that there is sufﬁcient supply pressure (1-8 bar). 2. Check that the ﬁll valve is properly working. 3. Check whether the counter-pressure onto the steam hose is higher than the maximum limit, preventing the entry of supply water into the cylinder by gravity. 4. Check that the steam outlet pipe is not choked and that there is no condensate inside. Remedy Type Reset 3x long Lack of supply water 4x long 5x long Excessive reduction of steam production Drain malfunction 6x long User parameter error 7x long Supply water high conductivity pre-alarm 1. Check the conductivity of the supply water. 2. If necessary install a suitable demineralizer. Note: the problem will not be solved by softening the supply water. warning 8x long External command signal not properly connected (only 2/10V) Cylinder full with steam production not in progress 1. Check the connection to the (external) controller. disabling alarm: active automat. with the humidiﬁer switched off: 1. Check for any leaks from the ﬁll valve or the condensate return pipe. 2. Check that the level sensors are clean. Foam is usually caused by surfactants in the water (lubricants, solvents, detergents, water treatment agents, softeners) or an excessive concentration of dissolved salts: 1. Drain and clean the water supply pipes. 2. Clean the cylinder. 3. Check for the presence of softeners. (in this case, use another type of supply water or reduce the softening) disabling manual active 9x long 10xlong Foam inside the cylinder 1. Cylinder completely depleted or excessive foam. Do main- disabling manual active tenance to the cylinder. 1. Check the drain circuit and the proper operation of the drain disabling manual active valve. blocking manual active 1. Download the proper default conﬁguration via HumiSet. 2. If the problem persists, contact the STULZ customer service. display: automatic reset not active warning display: not manual active reset warning display: not manual active reset Do maintenance and/or replace the cylinder. 11xlong Cylinder almost completely depleted Note: "manual reset" means one of the following activities - pulling off and putting on the power supply plug G/G0 (see 10.1.5 operation - ﬁg. 1) - switching off and on the control fuses F02 (Caution: unit is switched off.) E/0706/12/100 10.2 Reheat The reheat is an optional extra for your A/C unit. It is installed complete and integrated in the function and method of operation of the A/C unit. It is used to heat up the air. The following versions of the heater are available: - Electrical reheat - Low pressure hot water reheat (LPHW) - Refrigerant reheat (RF) Description Electrical reheat LPHW reheat RF reheat The reheat is connected in accordance with the electric diagram (refer to the appendix). It is controlled and monitored by the controller. The values for switching on and off are adjusted in the "operate module functions/ heating" menu on the controller. Refer to the operating instructions C7000. The LPHW reheat is to be connected to an external hot water circuit. The water supply is controlled via an electrically actuated LPHW valve. The LPHW valve is controlled via the controller. The control parameters are adjusted in the "operate module functions/ heating/LPHW valve" menu on the controller. Refer to the operating instructions C7000. The refrigerant reheat is integrated in the refrigerant circuit in accordance with the refrigerant diagram in the appendix. The refrigerant supply is controlled via an electrically-actuated 3-way solenoid valve. The solenoid valve is controlled via the controller. The control parameters are adjusted in the "operate/module functions/ heating" menu on the controller. Refer to the operating instructions C7000. Operation The reheat is controlled and monitored by the controller. No further measures are required for operation. Maintenance Clean the reheat annually from contaminations and check it for damage. E/0706/12/101 Installation The reheats are installed and connected in the A/C unit. The LPHW reheat is to be connected on site to the external hot water circuit. The pipelines are to be routed out of the A/C unit. The diameters for the connection piping of the LPHW reheat are listed in the following table. Baugröße Cabinet size Rohr -- Ø Pipe Ø mm 1 2 3 4 5 16 22 22 22 22 Commissioning The reheats are controlled and monitored by the controller of your A/C unit. No further measures are required for commissioning. Malfunction causes Alarm: Reheat defect All reheat alarms are received by the controller and can be requested according to the equipment. C7000-control system: C7000 plus-terminal: C7000 advanced terminal: no display (display only externally) indication on the display indication on the display Repairs to the electrical components are only to be carried out by authorized trained staff or by STULZ Customer Service Department. E/0706/12/102 10.3 Raised ﬂoor stand The ﬂoor stand is used to adjust the height of the A/C unit to the existing raised ﬂoor and consists of an encircling rectangular proﬁle of galvanized steel with adjustable screw sockets. Anti vibration compound is recommended between concrete ﬂoor and base plate. L2 Locating the supports (correspondingly on the other side) 785 865 L1 B Cabinet Baugröße size 1 2 3 4 5 B mm 960 1360 1710 2110 2510 L1 mm - - 795 995 784 L2 mm - - - - 1607 Supports Stützen Stk n° 4 6 8 Rectangular Rechteckproﬁle proﬁles 7070 x 40 x 40 Stk n° 4 5 6 Mafundstreifen Mafund strips Stk n° 4 6 8 Schrauben Screws M8 M8 x 30 x 30 Stk n° 8 12 16 E/0706/12/103 Connecting the bars (View from below) Angle Connection Butt Joint Cross Connection Minimum distances and mounting instructions Raised ﬂoor stand Z (min. 30) - the raised ﬂoor cutting (notch) should at least be 15° and must not have any contact to the raised ﬂoor stand, which could result in bone-conduction. Y Z (min. 30) X Z - the dimensions of the openings in the raised ﬂoor (X and Y) are 10 mm longer than the raised ﬂoor stand. The joint must be closed by customers with Z (min. 800) a continuous seal. - a concrete foundation is recommended in the area of the raised ﬂoor supports. X/Y = Opening in raised ﬂoor Z = Limit of distance - the raised ﬂoor supports have to be installed on vibration dampening material (do not screw down the supports!). - prior to installation of the A/C unit, the raised ﬂoor must be installed 7 mm higher than the raised ﬂoor plates, as the mafund plates are compressed by the weight of the A/C unit. E/0706/12/104 General design of the raised foor stand Unit width Raised ﬂoor connection refer to details below Continuous seal Raised ﬂoor stand Raised ﬂoor support Mafund strips Hammer head screw M8 x 30 Recommended concrete foundations (no (ﬂoor) ﬁnish) Upper edge of rough ﬂoor Upper support part Range of adjustment : ± 20mm Supporting pipe max 500 min 250 Raised ﬂoor Detail of raised ﬂoor connection 1 2 3 4 5 6 7 8 9 10 11 12 13 Sealing detail when distance Z < 100 mm Raised ﬂoor stand Adjustable support plate Adjusting nut Support pipe Support base Mafund strips Raised ﬂoor cut out angle Continuous seal proﬁle Before unit installation Raised ﬂoor plate Angled bracket Permanently elastic seal Fixing Sealing detail when distance Z > 100 mm E/0706/12/105 10.4 Air side connection 10.4.1 Unit base 300 75 450 The unit base is available in the versions: open, with damper, with ﬂexible connection or with supply grilles. The unit base can be installed in two ways, with the opening to the front or with the opening to the rear. L1 L1 L1 D A C B 865 Cabinet Baugröße size 1 2 3 4 5 A mm 960 1360 1710 2110 2510 B mm 130/80* 210 182 182 173 C mm - - - - 993 D mm - - 927 1127 1738 L1 mm 700/815* 1015 615 815 615 L2 mm 700/800* 1000 600 800 600 *version with grilles Caution! Each of the unit base versions must be screwed to the unit by 4x M10 screws! Unit base with grilles The standard grilles are equipped with horizontal ﬁns which can be adjusted to conduct the air which is blown out. E/0706/12/106 Unit base with ﬂexible connection L2 300 150 Unit base with damper L2 38 300 120 Caution! Each of the unit base versions must be screwed to the unit by 4x M10 screws! E/0706/12/107 10.4.2 Filter base The ﬁlter base is designed for the option "suction from bottom". With this option for upﬂow units the front panels are not provided with an air inlet perforation as otherwise usual. The air is drawn in from the bottom, in consequence there is no unit bottom plate, but supporting bars instead, on which compressors and other components are mounted. Filter base Unit base or raised ﬂoor stand Construction Baugrößesize 1 2 3 4 5 Gerätebreite unit width mm 1000 1400 1750 2150 2550 A mm 960 1360 1710 2110 2510 B mm 270 293 376 376 456 Filteranzahl N° of ﬁlters mm 3 E/0706/12/108 4 5 For the air side connection on top of the unit exist different options, which are designed as a simple ducting system (SDS), and can be optionally pre-assembled at the factory or assembled on the installation site. All SDS set-ups can be ordered as "pre-assembled in the works". 10.4.3 Duct 500/800 The duct is available with two different heights (500 or 800 mm) for all down-/upﬂow units. The duct will be set on top of the unit and be screwed with the unit. A detailed assembly instruction is attached with the duct parts. B 884 Cabinet Baugröße size 1 2 3 4 5 B mm 1000 1400 1750 2150 2550 C* mm 100 100 45 100 100 D* mm - - 905 1250 1450 L1* mm 800 1200 2 x 800 2 x 800 2 x 1000 *only for the discharge plenum (see next page) panel Top view: frame Baugröße Cabinet size 1 2 3 4 5 A mm 1000 1400 1750 2150 2550 B mm - - - 1002 1202 E/0706/12/109 10.4.4 Discharge plenum The discharge plenum is availale in two different versions for all down-/upﬂow units. The discharge plenum will be set on top of the unit and be screwed with the unit. A detailed assembly instruction is attached with the discharge plenum parts. 500 400 Discharge plenum with front grilles L1 B D L1 C 884 400 500 400 Discharge plenum with front and side grilles L1 B D L1 C 600 884 For numerical values of the dimensions B, C, D, L1 see table on the previous page. Only one front grille for size 1, 2. E/0706/12/110 10.4.5 Bag ﬁlter top 500 The bag ﬁlter is available for all downﬂow units. The bag ﬁlter serves for the pre- ﬁltration of the air which is sucked in and can be obtained in the qualities F6, F7 and F9 (according to EN779). The bag ﬁlter top will be set on top of the unit and be screwed with the unit. A detailed assembly instruction is attached with the parts. B 884 Cabinet size 1 F7 F9 F7 F9 pressure loss dependant on the airﬂow with different ﬁlter qualities Cabinet size 2 pressure loss dependant on the airﬂow with different ﬁlter qualities E/0706/12/111 Cabinet size 3 F7 F9 F7 F9 F7 F9 pressure loss dependant on the airﬂow with different ﬁlter qualities Cabinet size 4 pressure loss dependant on the airﬂow with different ﬁlter qualities Cabinet size 5 pressure loss dependant on the airﬂow with different ﬁlter qualities E/0706/12/112 10.4.6 Sound insulation plenum 500/800 The sound insulation plenum is available for all downﬂow- and upﬂow units. The plenum will be set on top of the unit and be screwed with the unit. A detailed assembly instruction is attached with the parts. By the insertion of the sound absorbing material, a sound attenuation is caused, which is stated across the acoustic spectrum in octave divisions in the table below. The stated frequencies represent the middle frequencies of the octaves, to which the attenuation values relate (e.g. 500Hz for the octave from 375Hz to 750Hz). B B = unit width 884 Height: 500 mm Baugröße Cab. size VL dp 3 Insertion Einfügungsdämpfung loss [dB] at octave in dB bei middle Oktavmittenfrequenz frequency (according (nach toVDI VDI2567) 2567) m /h Pa 63 Hz 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz 1 7200 22 2 4 8 11 16 18 12 11 2 10200 10 1 3 6 8 13 13 9 7 3 13500 29 2 5 11 11 14 13 10 8 4 20500 80 2 6 14 15 18 17 13 11 5 24000 58 2 5 12 13 16 15 11 9 Height: 800 mm Baugröße Cab. size VL dp 3 Insertion Einfügungsdämpfung loss [dB] at octave in dB bei middle Oktavmittenfrequenz frequency (according (nach toVDI VDI2567) 2567) m /h Pa 63 Hz 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz 1 7200 24 2 6 11 14 22 24 16 13 2 10200 11 2 5 8 11 17 17 11 8 3 13500 30 2 8 15 16 20 16 12 10 4 20500 84 3 10 19 20 25 22 16 13 5 24000 61 2 9 17 18 22 19 14 11 E/0706/12/113 10.4.7 Adapter plate with damper or ﬂexible connection - Connection on the unit The adapter plate serves to attach a damper or a ﬂexible connection on top of the unit or a duct. The adapter plate will be screwed with the damper / ﬂexible connection and the unit / duct. The damper actuator, which is controlled via a 24 V signal by the controller, has to be mounted at the damper and electrically connected. For this the cable, which is already connected at the motor, must be routed through an opening in the adapter plate into the unit and then be connected at the controller in the electric box according to the electric diagram. Adapter plate with damper Adapter plate with ﬂexible connection H 150 Cabinet Baugröße size E/0706/12/114 1 2 3 4 5 A mm 1000 1400 1750 2150 2550 B mm 237 287 237 237 275 C mm 650 1000 1400 1800 2000 D mm 107 107 107 107 107 E mm 650 650 675 675 675 H mm 120 120 175 175 175 Adapter plate with damper or ﬂexible connection - Connection under the unit (DX version) The adapter plate serves to attach a damper or a ﬂexible connection on top of the unit or a duct. The adapter plate will be screwed with the damper / ﬂexible connection and the unit / duct. The damper actuator, which is controlled via a 24 V signal by the controller, has to be mounted at the damper and electrically connected. For this the cable, which is already connected at the motor, must be routed through an opening in the adapter plate into the unit and then be connected at the controller in the electric box according to the electric diagram. Bottom view Unit front Knock-out openings for supply connections Cabinet Baugröße size 1 2 3 4 5 A mm 1000 1400 1750 2150 2550 B mm 117 200 113 105 103 C mm 700 1000 650 900 700 D mm - - 987 1145 925 E mm - - - - 1747 Damper height for all units: Flexible connection height for all units: 120 mm 150 mm E/0706/12/115 Adapter plate with damper or ﬂexible connection - Connection under the unit (CW/CW2 version) The adapter plate serves to attach a damper or a ﬂexible connection on top of the unit or a duct. The adapter plate will be screwed with the damper / ﬂexible connection and the unit / duct. The damper actuator, which is controlled via a 24 V signal by the controller, has to be mounted at the damper and electrically connected. For this the cable, which is already connected at the motor, must be routed through an opening in the adapter plate into the unit and then be connected at the controller in the electric box according to the electric diagram. Knock-out openings for supply connections Bottom view Unit front Cabinet size Baugröße 1 2 3 4 5 A mm 1000 1400 1750 2150 2550 B mm 245 293 113 103 113 C mm 650 1000 550 700 550 D mm - - 1087 1327 934 E mm - - - - 1888 Damper height for all units: Flexible connection height for all units: E/0706/12/116 120 mm 150 mm 10.5 Waterside connection 10.5.1 3-way-cooling water control valve The 3-way cooling water control valve is controlled by the C7000 relating to the condenser pressure by means of a pressure sensor at the refrigerant side. This valve controls the distribution of the water ﬂow through the condenser and the bypass. Modell Type Ventilgröße Valve size 171 / 201 3/4" 241 / 301 222 / 272 1" 351 302/ 442/482/ 602 1 1/4" 431/521/661/791 602 / 692 1 1/2" 852 / 1052 2" f(PC1) condenser PC1 10.5.2 2-way-cooling water control valve The 2-way cooling water control valve is controlled by the C7000 relating to the condenser pressure by means of a pressure sensor at the refrigerant side. This valve controls the water ﬂow through the condenser.In the table below, the admissible maximum differential pressures are listed per valve size. Up to these pressures the valve is kept close safely. (Closing pressure). The admissible maximum differential pressure, at which the valve can control throughout the whole range, is 2 bar for all valve sizes. Modell Type Ventilgröße Valve size Closing Schließdruck pressure [bar] [bar] 171 / 201 3/4" 10 241 / 301 222 / 272 1" 6,5 351 302/442/482/602 1 1/4" 4 431/521/661/791 602 / 692 1 1/2" 2,5 852 / 1052 2" 2 f(PC1) condenser PC1 E/0706/12/117 11. Customer service STULZ customer service ensures optimum operating reliability by means of preventative maintenance and repair during the entire service life of your units. Customer service is available to you round the clock. You can contact our customer service at the STULZ branch responsible for you. E RVIC SE LZ - STU your partner for a safe climate AIR-CONDITIONING For your service address please look at the back cover of this manual. E/0706/12/118

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