39mq Plug & Play Modular Air Handling Units Installation, Operation And Maintenance Manual

Transcript

Installat ion, operat ion and maintena nce Manual ●● Modular & flexible construction ●● Heat recovery solutions ●● High efficiency components Plug & Play Modular Air Handling Units 39MQ Contents 1 - SAFETY considerations................................................................................................................................................ 3 1.1 - General...................................................................................................................................................................................... .3 1.2 - Applications.............................................................................................................................................................................. .3 1.3 - Instruction types....................................................................................................................................................................... .3 2 - Transport.............................................................................................................................................................................. 5 2.1 - Unloading by fork-lift truck.................................................................................................................................................... .5 2.2 - Unloading by crane.................................................................................................................................................................. .5 2.3 - Lifting a unit with a base frame.............................................................................................................................................. .5 2.4 - Roof unit with bitumen roof................................................................................................................................................... .6 2.5 - Roof unit with steel roof.......................................................................................................................................................... .6 2.6 - Pre-assembly storage................................................................................................................................................................ .6 3 - INSTALLATION......................................................................................................................................................................... 6 3.1 - Installation of unit and ducts.................................................................................................................................................. .6 3.2 - Installation of steel roof........................................................................................................................................................... .8 3.3. - Electrical installation and plumbing................................................................................................................................... .14 3.4 - Protection measures............................................................................................................................................................... .17 3.5 - Dismantling and disposal...................................................................................................................................................... .17 3.6 - General.................................................................................................................................................................................... .17 2 1 - SAFETY considerations 1.3 - Instruction types 1.1 - General The following warning pictograms and labels with text are used. The 39MQ air handling units (AHUs) are designed and manufactured in accordance with the CE machine directive. In order to guarantee safe operation and use of the unit, carefully read and observe the instructions in this document and pay special attention to the warnings that apply to this unit. Any modifications in the design and/or installation of the AHU that are carried out without discussion with Carrier and without advance written agreement will result in the loss of the right to any warranty claims and any claim for injury to personnel as a result of these modifications. Lifting point This pictogram shows where the AHU must be lifted and is positioned on the support beam. All work must be carried out by sufficiently trained personnel. All applicable personal safety devices must be used to ensure safe working conditions. Safety gloves and glasses must be worn for all maintenance operations. A respiratory protection mask must be worn when changing the filters. The A-weighted equivalent continuous sound pressure level can be above 85 dB(A), depending on the motor size, fan size, fan speed and the location where the AHU is installed. This means that ear defenders must be worn, when the fan is running. All doors and hatches must have at least one lock that can only be opened with a special device. Earthing This pictogram indicates where the AHU must be earthed and is on one of the support beams beneath the casing in the fan section. • The electrical components in the AHU must be earthed, except for components with double insulation and/or components with a supply voltage below 50 V. • The electrical components must be installed in accordance with national and local regulations. Heating and cooling coils are manufactured and supplied in accordance with guidelines of the Pressure Equipment Directive (PED). Do not walk on the roof panels of units installed inside or outside. Only sufficiently qualified personel is allowed to work on (electrical) components. All power supplies to the unit must be disconnected, before any work can be carried out. Switch off the supply voltage using the main disconnect switch. CAUTION: Electric heaters have a separate supply and must be switched off separately. If work lighting is required, use only lighting with 24 V maximum. Use of electical equipment with a voltage above 48 V is only permitted if an earth leakage switch is installed that complies with local and national regulations. 1.2 - Applications The AHU is designed for the movement and conditioning of air, unless otherwise agreed during the design stage. 3 Rotating parts Opening the fan door This pictogram indicates that there are rotating parts behind this access cover, door or panel which may cause injury. The components that include rotating parts are the fan and heat recovery wheel. If there are special customerspecific components behind doors, access covers or panels that include rotating parts and pose a potential risk, this is also indicated by this pictogram. This pictogram is positioned on the outside of the door or access cover of the fan assembly. This pictogram warns that the fan must be switched off and deenergised for a minimum of two minutes before the door or access cover is opened. ! waarschuwing ! Hot surfaces This pictogram indicates that there are components behind this access cover, door or panel that can cause serious burns when touched. The surfaces that may be hot are the heater surfaces. If there are special special customer-specific components behind doors, access covers or panels that have hot surfaces and pose a potential risk, this is also indicated by this pictogram. ! warning ! Voor openen deuren, ventilator uitschakelen, spanningsloos maken en uit laten lopen (minimaal 2 minuten). Before opening the doors, switch off and deenergise the fan and allow it to run down (minium 2 minutes). Transportbeugels Verwijder transportbeugels voor opstarten ventilator. Transport brackets Remove transport brackets before starting up the fan. ! attention ! ! Gefahr ! Avant ouverture des portes, le ventilateur doit être déconnecté et avoir eu le temps, de s’arrêter completement (2 minutes minimum). Vor Öffnen der Türen den Ventilator abschalten, spannungslos machen und zum Stillstand kommen lassen (mindestens 2 Minuten warten). Fixations de transport Retirer les fixations de transport avant la mise en route. Transportsicherungen Transportsicherungen vor der Inbetriebnahme demontieren. 200034906 Other warning labels Electrical voltage This pictogram indicates that there are electrical components behind this access cover, door or panel that may be dangerous for the user/installer. Only qualified personnel is permitted to carry out work on these components. For this work the regulations of the applicable international (a.o. IEC 61557, EN 50110 and ES 59009) and national (e.g. BS 7671) standards must be observed. The pictogram is attached to the access cover for the electric heater control box. ! waarschuwing ! ! warning ! Vervuilde filters zijn brandbaar. Polluted filters are inflammable. ! waarschuwing ! ! warning ! Les filtres encrassés peuvent être inflammables. Verschmutzte Filter sind leicht entflammbar. ! waarschuwing ! ! warning ! Na het uitzetten van de elektrische verwarmer moet de ventilator nog minimaal 5 minuten draaien. After switching off the electric heater the fan must continue to run for at least 5 minutes. ! waarschuwing ! ! warning ! Après la déconnexion de la résistance électrique, le ventilateur doit continuer à tourner pendant au moins 5 minutes. Nach Abschalten der Elektroheizung muss der Ventilator noch mindestens 5 Minuten weiterlaufen. Central data This label contains the data for the AHU, such as order number, position number etc. If present, the label is normally located on the access cover or the door of the fan assembly. 4 200034908 CAUTION: All doors and access covers must be closed before starting up the AHU. Lifting and transport 2.2 - Unloading by crane AHU delivered on transport pallet must be lifted by straps as shown in the illustration. An instruction is attached to the AHU that describes the procedures that must be followed for lifting and transport. The following chapter contains further details. 1.4 - Disposal of parts/materials • T he packaging material must be disposed of in a respon-sible manner and in accordance with local regulations. • Components that are replaced, must be disposed of as described above. AHU delivered with legs must be lifted by straps secured to the legs as shown in the illustration. 2 - Transport The air handling unit – AHU - is delivered as one section or in several sections, which are to be assembled on site. The AHU is delivered on transport pallets, legs or on a base frame. Loading and unloading as well as transport on the site is possible by fork-lift truck or by crane using suitable lifting straps. 2.1 - Unloading by fork-lift truck The forks of the truck must be sufficiently long to avoid any damage to the AHU underside. 2.3 - Lifting a unit with a base frame The holes in the base frame are to be used for the placing of lifting bars. Make sure that the bars used are strong enough to lift the loads in question and that the straps do not touch and damage the top of the unit. Keep the straps away from the top of the unit by bars as shown in the illustration. 5 2.4 - Roof unit with bitumen roof Avoid damaging the drip nose profiles along the bitumen roof. Keep the protection profiles of Styrofoam on the unit until the installation has been completed. If the unit is lifted by straps, the straps must be kept away from the drip nose profiles by bars. 2.5 - Roof unit with steel roof For units with steel plate roof, the steel plates are delivered uninstalled on a separate pallet. Do not place any parts and do not step or walk on the plates. 3 - INSTALLATION 3.1 - Installation of unit and ducts Important: When positioning the unit, it is recommended that a distance which is the same as the unit’s width is kept free for service and inspection in front of the unit. 3.1.1 - Adjustable feet under legs or base frame Adjustable feet are provided in a carton box placed inside the unit. 2.6 - Pre-assembly storage The AHU must be protected from the weather and impact. Packaging must be removed and the unit covered with tarpaulin or similar materials. In order to minimize condensation, sufficient air circulation must be ensured between the covering and the unit. 3.1.2 - Supporting surface The surface beneath the unit must be level and even. The surface must be able to withstand the load of the AHU. In the case of lightweight construction or especially sensitive areas, the unit should be placed on a vibration absorbing foundation with the necessary properties. Attention: Duct work must be sound insulated and must not be mounted directly on beams, trusses or other critical building parts. 6 3.1.3 - Base frame assembly The base frame is delivered unassembled and has to be assembled on the site before it is possible to position and assemble the various sections of the AHU. Assembly of the base frame is illustrated on 4 pages in a manual that is always in a plastic folder and is attached to one of the large base frame parts. This manual is available on the site among the base frame parts. There are two types of base frames: 1. 150 mm high base frames 2. 250 mm high base frames. There are 4 different manuals and each of them illustrates the assembly of the 4 different types of base frames: 1. Manual about the 150 mm high base frames for AHUs in the sizes from 39MQ 10 to 39MQ 40. The name of this manual is – Base frame 150 39MQ 10 - 40 2. Manual about the 150 mm high base frames for AHUs in the sizes from 39MQ 50 to 39MQ 150. The name of the manual is – Base frame 150 39MQ 50 - 150 3. Manual about the 250 mm high base frames for AHUs in the sizes from 39MQ 10 to 39MQ 40. The name of the manual is – Base frame 250 39MQ 10 - 40 4. Manual about the 250 mm high base frames for AHUs in the sizes from 39MQ 50 to 39MQ 150. The name of the manual is – Base frame 250 39MQ 50 - 150. Base frame without drip nose profile Base frame with drip nose profile (accessory) A local installer must deliver and install further protection and maybe insulation of the base frame. Material for protection and insulation is not delivered by Carrier. See the illustration below with an example of insulation, protection by a steel plate and the lower part of the steel plate covered by bitumen. Example of 150 mm high base frame for AHUs in the size from 39MQ50 to 39MQ150 3.1.5 - Joining the AHU sections Mount adjustable feet with a distance of maximum 1500 mm between each foot under the base frame. The base frame can now be levelled by the adjustable feet. The next step is to place and assemble AHU sections on the base frame. 3.1.4 - Protection of base frame under unit installed outdoors Units for outdoor installation are usually delivered on base frames, and the units are built without drip nose profile between unit and base frame, but the units are available with drip nose profile as an accessory. The drip nose profile is made of aluminum and is mounted on the base frame. See the illustration below. Adjustable feet are provided in a carton box placed inside the unit. The sections must be placed on the base frame and if the unit is delivered with 100 mm legs, the sections must be positioned directly opposite each other. Ensure that the factory-fitted rubber sealing is undamaged 2. The sections are then to be positioned directly opposite each other. If the sections are built with legs, the adjustable feet are used to get the sections parallel and at the same height. 1. 7 3. P ress the sections hard together so that the rubber profiles are so flat that the iron frames of the two sections are joined. 3. Mount the air distributor plate between 2 nuts at the end of the extension bolts and check that the bent edges of the distributor plate are pointing in the same direction as the air flow. 3.1.7 - Fitting the ductwork 4. The sections are then to be locked permanently together with the black plastic-coated Disc-Locks. The Disc-Locks are delivered in a carton box placed inside the unit. Place each Disc-Lock over the 2 factory fitted locking pins. The discs and locking pins are not reliable for pulling the sections together. They are only sufficient for keeping the sections well together, so just turn each disc gently with the supplied Allen key. Use a sequence where each disc is tightened with only one click at a time. 3.1.6 - Installing an air distributor Air distributor – only for units with centrifugal fans. If an air distributor is to be installed at the end of an AHU, the distributor is always supplied uninstalled. 1. S crew the extension bolts into the threaded bushes at the fan outlet. 2. T ighten the nuts. 8 Flexible duct connections between AHU and ductwork must always be installed. Be sure that flexible duct connections are almost fully stretched. (Flexible connections are accessories and they are placed inside the unit). At the fan outlet on a centrifugal fan, the duct size should be as close to the outlet size as possible. Avoid blockage and turbulence at the fan outlet. 3.2 - Installation of steel roof 3.2.1 - Overview • M ount rails A1, B2, C3, D4, E5 on the unit for support of trapezoidal roof plates (mount also rails Y and Z on units of the size 30 and on units that are larger than size 30 longitudinally at the centreline of the units). • Place foam bands – P – on the horizontal rails A1, B2, C3 and D4 for support of roof plates. • Calculate overhang of the roof at both ends of the unit and mount roof overhang profile – G1 on the first trapezoidal roof plate – F1 before the roof plate is mounted. • Place and mount roof plates F1, F2, F3 and so on. • Remember foam bands on the side laps between roof plates to prevent rainwater from passing through. • Place roof overhang profile – G5 at the other end of the unit before the last roof plate is mounted. • Mount sides and corners on the roof. • Apply sealing where plates are joined to ensure water resistance - even in stormy weather. 3.2.2 - Mount rails. Units of size 10, 15, 20, and 25 Squeeze sealant in sufficient quantity between the underside of the rails A1, B2, C3, D4, E5 and the horizontal top side of the unit before the rails are mounted. This means that the rails are standing on sealant to achieve the tightest connection between rails and unit to prevent rainwater from passing under the rails and into the unit. Mount the rails A1 and B2 on the front side (the side with the inspection doors) – use the simple self drilling screws without the sealing washer – see the illustration of the screw below. Mount the lower rails C3 and D4 on the back side of the unit. Note: Rail D4 fits into the rail C3, and this offers the advantage that the rail D4 can be slid inside the rail C3 to adjust the length of rail D4 accurately to the length of the unit. In this way it is not necessary to spend time and effort on cutting the rail D4. Mount vertical rail – E5 - with the roof slope at each end of the unit It is important to place a screw in each hole – even though the number of holes for screws seems to be very large, a screw in each hole is necessary as the stress on the roof during stormy weather is extremely high. 3.2.3 - Mount rails. Units of size 30 and units larger than size 30 Note: Rail B2 fits into the rail A1, and this offers the advantage that the rail B2 can be slid inside the rail A1 to adjust the length of rail B2 accurately to the length of the unit. In this way it is not necessary to spend time and effort cutting the rail B2. On units of size 30 and on units that are larger than size 30, rails A1, B2, C3, D4, E5 must be mounted on the unit for support of trapezoidal roof plates, but also rails Y and Z must be mounted longitudinally at the centre-line of the units to hold the trapezoidal roof plates. 9 Squeeze sealant in sufficient quantity between the underside of the rails A1, B2, C3, D4, E5 and the horizontal top side of the unit before the rails are mounted. This means that the rails are standing on sealant to achieve the tightest connection between rails and unit to prevent rainwater from passing under the rails and into the unit. Mount the rails A1 and B2 on the front side (the side with the inspection doors) – use the simple self drilling screws without the sealing washer – see the illustration of the screw below. Notice that rail Z fits over the lower rail Y, and this offers the advantage that the rail Z can be slided on the rail Y to adjust the length of rail Z accurately to the length of the unit. In this way it is not necessary to spent time and effort on cutting the rail Z. It is important to place a screw in each hole – even though the number of holes for screws seems to be very large, a screw in each hole is necessary as the stress on the roof during stormy weather is extremely high. 3.2.4 - Roof overhang along the long sides of the unit Note: Rail B2 fits into the rail A1, and this offers the advantage that the rail B2 can be slid inside the rail A1 to adjust the length of rail B2 accurately to the length of the unit. In this way it is not necessary to spend time and effort cutting the rail B2. Mount the lower rails C3 and D4 on the back side of the unit. Note: Rail D4 fits into the rail C3, and this offers the advantage that the rail D4 can be slid inside the rail C3 to adjust the length of rail D4 accurately to the length of the unit. In this way it is not necessary to spend time and effort cutting the rail D4. Mount vertical rail – E5 - with the roof slope at each end of the unit. Mount the rails Y and Z on the unit with the centre-line of the rails exactly over the centre-line of the unit. It is longitudinal on the middle of the units to hold the trapezoidal roof plates. 10 The roof plates are longer than the width of the unit to ensure sufficient overhang along the sides of the unit. • The overhang is 100 mm along each side of the smallest unit – size 10. • The overhang is 150 mm along each side of the units – size 15, 20, 25. • The overhang is 175 mm along each side of the biggest units – including size 30. 3.2.5 - Calculation of the overhang at the ends of the unit. Mount overhang profile – G1 The roof must be between 200 and 400 mm longer than the length of the unit to secure a roof overhang between 100 mm and 200 mm at the each of the 2 ends of the unit, and the length of this overhang must be calculated before the first roof plate is mounted. The unit is delivered with 2 similar overhang profiles - G1 and G5 - one for each end of the roof. Mount one of the 2 roof overhang profiles – G on a trapezoidal roof plate. Use the self drilling, painted screws with sealing washers - W - see the illustration. Note: Foam bands - P – are necessary between the overhang profile G1 and the roof plate F1. See the illustration. The total cover width of the trapezoidal roof plates always changes with the pitch of 207 mm between the trapezoidal ribs, making up a total length of the complete roof of - for example 2070 mm, 2277 mm, 2484 mm and so on. We call this length of the total roof for RL and we call the total length of the complete unit for AL. The trapezoidal roof must always be longer than the unit, to obtain a reasonable overhang called – XX - of the roof at both ends. Self drilling, painted screws supplied with sealing washer for the mounting of the trapezoidal plate to the roof overhang profile. In the table below you will find 40 different lengths of roofs (always changing with the 207 mm) and the lengths of units that are ideal for each of the 40 alternative roof lengths. Measure the total length – AL of the unit – for example 5 metres between the 4982 and 5182 mm mentioned in the table below. AHU length AL Roof length RL AHU length AL 2277 4775 – 4975 1670 – 1870 2070 2084 – 2284 2484 1877 – 2077 2291 – 2491 2498 – 2698 2705 – 2905 2912 – 3112 3119 – 3319 3326 – 3526 3533 – 3733 3740 – 3940 3947 – 4147 4154 – 4354 4361 - 4561 7466 – 7666 7673 – 7873 7880 – 8080 8087 – 8287 8294 – 8494 8501 – 8701 2691 2898 3105 3312 3519 3726 3933 4140 4347 4554 4761 7866 8073 8280 8487 8694 8901 Roof length RL 4568 – 4768 4968 4982 – 5182 5382 5189 – 5389 5396 – 5596 5603 – 5803 5810 – 6010 6017 – 6217 6224 – 6424 6431 – 6631 6638 – 6838 6845 – 7045 7052 – 7252 5175 5589 5796 6417 6624 6831 7038 7245 7452 8915 – 9115 9315 9329 – 9529 9536 – 9736 9743 – 9943 Place foam bands P between profiles A1, B2, C3, D4 and roof plates. 6210 7659 9122 – 9322 3.2.6 - Foam bands between rails and roof plates – mount roof plates 6003 7259 - 7459 8708 – 8908 The mentioned length of roof – RL - for this length of unit is 5382 mm (the delivered trapezoidal plates can be combined to this length - RL = 5382 mm). 5382 mm minus 5000 mm is 382 mm overhang for both ends, and 382/2 mm = 191 mm is the overhang for each end. Place the trapezoidal roof plate F1 with the roof overhang profile G1 on rail E with an overhang of 191 mm. 9108 9522 9729 9936 10143 The trapezoidal roof plates are mounted with the self drilling, painted screws supplied with sealing washer. 11 3.2.7 - Foam bands between roof plates Mount the self adhesive foam band – O - on the underlapping rib for water resistant and effective sealing due to the small slope of the roof. 3.2.8 - Mount roof plates – some of them are overlapping by 2 ribs 3.2.9 - Mount overhang profile – G5 on the other end of the unit The width of each plate is always 1.035 mm and some of the plates have to overlap by 2 ribs to achieve the optimal total length of the whole roof — see the illustration above. When the last trapezoidal plate (in this example F5) has been placed on the unit, the second roof overhang profile G5 must be pushed under the trapezoidal roof plate and mounted with the self drilling, painted screw with sealing washer. Mounting must be similar to the mounting of roof overhang profile under the trapezoidal roof plate at the other end of the unit. 12 3.2.10 - Mount side profiles and corners along the edges of the roof to protect persons Profiles N and O with the rectangular holes are for the long and lower side of the roof because rain can escape through the holes. Mount the profiles type N first and the profile O last because the profile O goes over the profile N. Mounted in this order, the profile O can match the end of the roof and the surplus length of the profile O will just cover part of the previous profile N. Mount the profiles L and M along the long and higher front side of the roof. Mount the 4 protection corners. 3.2.11 - Apply sealing on plate joints to ensure water resistance Finish installation of the steel roof by sealing all plate joints with silicone to prevent rainwater from passing into the unit. See examples below of joints to be sealed. 13 3.3. - Electrical installation and plumbing 3.3.1.1.3 - Rotary heat exchanger with variable speed Pipes and cables must not obstruct the inspection doors and components which can be extracted from the unit. In special circumstances, when it is impossible to open the doors fully, the doors can be taken off by removing the hinge pins. 3.3.1 - Electricity for motors and electrical heater batteries in units without cabinet Connection to the controller according to the wiring diagram printed on the cover of the control box. Note: Inside the control box there is a test button - “Test on/off”. 3.3.1.1.4 - Electrical heater battery Check carefully that the AHU is in fully accordance with all requirements in the User Manual. Connection to the electrical heater battery according to the wiring diagram that is placed behind the inspection door of the battery. Note: To ensure sufficient cooling of the heating elements, the fan must have an appropriate after-run when power to the electrical heating has been cut off. 3.3.1.1.1 - Damper motors 3.3.1.1.5 - Connection of motors for fans The size of the damper motors must comply with the torque required by the dampers. In order to reduce the required torque, the start of the fan should be delayed until the dampers are fully opened. 39MQ 10, 39MQ 15, 39MQ 20, 39MQ 25 and 39MQ 30 units have removable fans/motors for easy installation and service. The electrical cable must therefore be sufficiently long to enable the motors to be pulled out of the unit for service. When the fan is running, the extra cable must be wound up and fixed to keep clear of rotating parts. 3.3.1.1 - Before start-up 3.3.1.1.2 - Rotary heat exchanger with constant speed Electrical connection to the 3-phased gear motor must be in accordance with local statutory requirements. Connect the motor in accordance with the motor data printed on the motor by the manufacturer. Two-speed motors with separate windings are to be connected as illustrated below with low speed to the left, high speed to the right. 14 One-speed motors are to be connected as illustrated below with low speed to the left or high speed to the right. Two-speed motors with Dahlander windings are to be connected as illustrated below with low speed to the left, high speed to the right. 3.3.1.1.6 - Frequency converters Wiring must comply with local statutory requirements and according to local restrictions based on the EMC Directive. 3.3.2 - 39MQ-units – delivered as one assembled 3.3.3 - Plumbing – Pipes for water and/or refrigerant, valves and drains 3.3.3.1 - Pipe connection to coils Coils with 3 rows or more must always be connected in counter flow to the airflow (see the illustration below). All external components are stored in a carton box placed on the unit. Outdoor versions of 39MQ units with cabinet are delivered with cabinet inside the unit. All internal components are cabled and connected to terminals and fuses in the cabinet and cable entries for cables from the external components are placed in the unit-front below the cabinet on those units. 3.3.2.1 - Step 1: Install external components External components could be: The supply air temperature sensor, valve motor(s), sensor for water temperature in the heating coil (if water heating coil was requested), circulation pump (Carrier does not deliver the pump, but terminals are present in the cabinet for a pump with a one phase motor), 2 air pressure transmitters if it is a solution for constant pressure in the ducts, a repeater (if requested). Not all components are delivered with every 39MQ unit. See the order confirmation with exact information about and description of the accessories for this unit. See the User Manual with the description of all accessories available for 39MQ units. Coils for steam must be connected with the steam inlet at the top and condensate water outlet at the bottom. (see the illustration below). 3.3.2.2 - Step 2: Install cables from external components Cables must not obstruct the inspection doors and prevent extraction of fans as well as rotary heat exchangers from the sizes 10, 15, 20, 25 and 30. Cables are not included from Carrier. 3.3.2.3 - Step 3: Pull the cables through the cable entries to the integrated cabinet The section with the cabinet is provided with cable entries in different sizes. Pull the cables through the preinstalled cable entries. 15 Cooling coil for direct expansion must be connected with expansion valve at the top and the suction outlet at the bottom. (see the illustration below). Run-around coils – do not connect galvanized pipes and fittings. Note: Glycol must be without additives and auto glycol must not be used. 3.3.3.2 - Avoid weight and stress on coils and coil connection pipes The coil and pipes from the coil are not constructed to withstand the weight and stress from valves, circulation pumps, long pipes and insulation of pipes. The system must be supported carefully in rigid bearings to roof, floor and walls. 3.3.3.3 - Valves To avoid freeze ups and frost bursts of pipes, sufficient insulation is recommended and installation of heating between the pipes and the insulation could even be necessary (insulation and heating is not included). P Negative pressure P (Pa) H1 Minimum H2 500 Pa 100 mm 40 mm 750 Pa 150 mm 55 mm 1.000 Pa 190 mm 70 mm P Positive pressure P (Pa) H1 Minimum H2 500 Pa 90 mm 65 mm 750 Pa 120 mm 90 mm 1.000 Pa 150 mm 120 mm Connection pipes on heating- and cooling coils are provided with external threat. The valves and valve motors are stored in a carton box placed on the unit, if the unit was ordered with valves and valve motors. Connect valves to the terminals according to wiring diagrams. 3.3.3.4 - Draining and water trap Drip trays to collect condensate water are installed under plate heat exchanger and cooling coil. Each drip tray is provided with a drainage outlet. A water trap is included in the delivery to ensure escape of water from the tray. Water trap(s) is(are) stored in a carton box placed on the unit. The closing level of the water trap must be estimated correctly to ensure safe escape of the water (see the illustration and estimate the minimum closing level according to the table). A water trap is necessary on each drainage outlet and the pipe diameter of the water trap and sewage system must be identical to the pipe diameter of the drainage outlet from the tray. 16 3.4 - Protection measures See the description in the User Manual. 3.5 - Dismantling and disposal Remember to disconnect all electrical and plumbing connections before dismantling. All fluids must be drained and emptied from the unit which must then be disposed of in accordance with the current local regulations. After dismantling of the unit, the sections must be taken apart and the pieces placed into groups according to the material type. The materials must then be delivered to an approved site. Further information is available in maintenance instructions. 3.6 - General Further information is available in User Manual. 17 www.eurovent-certification.com www.certiflash.com www.eurovent-certification.com Order No.: 13961, 02.2014. The manufacturer reserves the right to change the specification without prior notice. The front cover photos are for illustration purposes only and not contractually binding. Quality Management Systems www.certiflash.com Printed in the European Union.