Transcript
Air • magic NTD1200 Neutral Temperature Dehumidifier Air • magic HRV1200/HRV1200HP Heat Recovery Ventilation (passive/active) designed for radiant cooling applications User’s Manual
CONTENTS
2
Chapter 1
GENERAL INFORMATION
page 5
Chapter 2
TECHNICAL SPECIFICATIONS [NTD1200]
page 8
Chapter 3
DEHUMIDIFICATION PERFORMANCE TABLE [NTD1200]
page 9
Chapter 4
SUPPLY (ASP) AVAILABLE STATIC PRESSURE (ASP) [NTD1200]
page 10
Chapter 5
DRAWINGS [NTD1200]
page 11
Chapter 6
SCHEMATIC DIAGRAM AND OPERATING PRINCIPLE [NTD1200]
page 13
Chapter 7
ROOM AIR DISTRIBUTION [DEHUMIDIFICATION ONLY]
page 14
Chapter 8
HYDRAULIC DIAGRAM
page 16
Chapter 9
WIRING DIAGRAM [NTD1200]
page 17
Chapter 10
TECHNICAL SPECIFICATIONS [HRV1200]
page 18
Chapter 11
EXHAUST (ASP) AVAILABLE STATIC PRESSURE [HRV1200]
page 19
Chapter 12
DRAWINGS [HRV1200]
page 20
Chapter 13
WIRING DIAGRAM [HRV1200]
page 22
Chapter 14
ELECTRICAL CONNECTIONS BETWEEN NTD1200 AND HRV1200
page 23
air • magic 1200 air unit range User's Manual
CONTENTS
3
Chapter 15
SCHEMATIC AND OPERATING PRINCIPLE [NTD1200 WITH HRV1200]
page 24
Chapter 16
OPERATING MODES [NTD1200 AND NTD1200+HRV1200/HRV1200HP]
page 25
Chapter 17
BASICS OF ROOM AIR DISTRIBUTION
page 27
Chapter 18
GENERAL AIRFLOW DIAGRAMS
page 28
Chapter 19
SUPPLY AVAILABLE STATIC PRESSURE [NTD1200 WITH HRV1200] 19.1 DAMPER IN RECIRCULATION POSITION [NTD1200 WITH HRV1200] 19.2 DAMPER IN HRV POSITION [NTD1200 WITH HRV1200]
page 30 page 31
Chapter 20
TECHNICAL SPECIFICATIONS [HRV1200HP]
page 32
Chapter 21
DRAWINGS [HRV1200HP]
page 33
Chapter 22
WIRING DIAGRAM [HRV1200HP]
page 35
Chapter 23
OPERATING MODES [NTD1200 WITH HRV1200 OR HRV1200HP]
page 36
Chapter 24
DRAWINGS 24.1 NTD1200 WITH HRV1200 24.2 NTD1200 WITH HRV1200HP
page 37 page 39
air • magic 1200 air unit range User's Manual
CONTENTS Chapter 25
Chapter 26
4
ACCESSORIES 25.1 FAN1200 25.2 HYDRONIC HEATING AND COOLING COIL FOR FAN1200 25.3 INLET ADAPTER
page 41 page 43 page 44
INSTALLATION CLEARANCES
page 45
air • magic 1200 air unit range User's Manual
Chapter 1
DESCRIPTION
5
air • magic 1200 air unit range User's Manual
Chapter 1
GENERAL INFORMATION
Radiant Cooling And Heating Systems provides a range of air treatment unit for the HVACR industry. This user’s manual pertains to the neutral temperature (isothermal) dehumidifi-
er air • magic NTD1200. The air • magic range of dehumidification and ventilation systems has been specifically designed and manufactured for use in the commercial buildings. Its main functions are to control the relative humidity level, provide ventilation (HRV module require) and increase the Indoor Air Quality (IAQ) and comfort of the occupants. The unit is specifically designed to work in combination with radiant cooling and heating systems. The air • magic 1200 range of units integrates with the control • magic climate control platform offered by . The air • magic NTD1200 differs from traditional dehumidifiers because is able to control the relative humidity maintaining the temperature of the supplied air neutral with the room (isothermal). The air • magic NTD1200 also features an exclusive convective integration function that, when necessary, integrates the cooling and heating effect of the radiant panels, by supplying cooler air (in cooling mode) or warmer air (in heating mode), in order to rapidly obtain the desired thermal and hygrometric conditions.
In addition, the air • magic NTD1200 units feature a free-cooling function that makes it possible to mitigate the overheating effect due to solar radiation during the winter. During the design of the air • magic NTD1200 neutral temperature dehumidification units, particular attention was paid to reduce the power consumption and ambient noise levels. air • magic devices can be ducted making it possible to be installed inside of buildings: in plenum ceilings or in mechanical rooms. IMPORTANT NOTE: The air • magic NTD1200 units may not be installed outdoors or in places exposed to the elements! The air • magic NTD1200 unit can be combined with the HRV module (optional), air • magic HRV1200 or air • magic HRV1200HP (with integrated air-to-air Heat Pump) to create a complete air handling system for radiant cooling application. The additional HRV module is equipped with built-in motorized damper and exhaust blower that enable total or partial ventilation: from total air renewal (100% ventilation) with heat recovery to full recirculation (0% ventilation). The efficiency of the cross flow heat exchanger (passive) can easily exceeds 60%, especially during partial recirculation
6 When ventilation need are high, the air • magic NTD1200, combined with the active heat recovery ventilation unit, air • magic NTD1200HP, is the preferred solution An integrated air-to-air heat pump extract the residual energy of the air before his expulsion bringing the efficiency of the heat recovery much more than 100%. In addition to the enormous energy savings, the active heat recovery ventilation allows ventilation of the building even when the external conditions are prohibitive and the traditional system would be forced to be set in a partial recirculation and therefore wouldn’t meet the ventilation requirement. The air • magic 1200 device features several operating functions: • Dehumidification (at neutral temperature) • Convective integration function (heating and cooling) • Heat recovery ventilation (HRV module air magic HRV1200 or HRV1200HP required) • Free-cooling (HRV module air HRV1200 or HRV1200HP required) For more information read Chapter 16
air • magic 1200 air unit range User's Manual
•
•
magic
Chapter 1
7
GENERAL INFORMATION
IMPORTANT NOTE: The correct model should be selected based on the number of people occupying the conditioned environment rather than its dimensions, as listed in the technical specifications table, calculated at specified conditions.
Target number of people (NTD1200): 70 Outdoor air: 90°F - 50% R.H. As a reference, required ventilation per person following the ASHRAE standard 62-89 (ventilation guidance): schools 15 CFM per person offices 20 CFM per person hospital 25 CFM per person offices 20 CFM Metabolic activity: Average Body weight: Clothing: Average radiant temperature: Air speed:
1.2 met 154 lbs 0.6 clo 74.3F < 0.34 f/s
air • magic 1200 air unit range User's Manual
Chapter 2
TECHNICAL SPECIFICATIONS
8
Coil water temperature in cooling mode Min water temp: Max water temp:
50 °F 100°F 20 % 80 %
45 °F 75 °F
Coil water temperature in heating mode Min water temp: 75 °F Max water temp: 130 °F
pints/day
440
Thermal cooling input* (for Neutral Dehumidification function)
Btu/h
37,530
Sensible cooling capacity* (Convective Integration)
Btu/h
20,470
Nominal Airflow
CFM
1,200
Max. supply available static pressure (S3 - High Speed) @120CFM
inch of w.c.
0.64
Max supply available static pressure (S2 - Medium Speed) @1200CFM
inch of w.c.
0.37
Max supply available static pressure (S1 - Low Speed) @1200CFM
inch of w.c.
0
Nominal water flow (60°F)
GPM
6.6
Water circuit loss of head
ft. of head
6.7
oz.
53
Sound power level
dB(A)
55
Sound pressure level (at 3.28 ft.)
dB(A)
45
Rated power consumption*
KW
2.5
Max. power consumption (Compressor ON and blower S3 high speed )
KW
2.8
W
430
Rated Amps absorbed*
Amps
12.4
Max. Amps. absorbed
Amps
14.6
Refrigerant gas quantity (R410a)
ELECTRICAL SPECIFICATIONS
Min temperature: Max temperature: Min relative humidity: Max relative humidity:
WEIGHTS AND DIMENSIONS
The following ambient conditions in indoor environments are required for proper operation of the air • magic NTD1200 unit dehumidifier:
MECHANICAL SPECIFICATIONS
Water removal*
Supply Blower Max. power consumption (S3 - High Speed)
Dust and water protection rating Power supply
IP 44 VAC / Ph / Hz
220 / 1+N / 60
Height
inch
19 1/4
Width
inch
32 1/4
Depth
inch
40 1/2
Weight
lbs.
242
*At the following conditions: room supply air at 80°F / 65% R.H., coil supply water temperature 60F
air • magic 1200 air unit range User's Manual
DEHUMIDIFICATION PERFORMANCE TABLE
The performances indicated in the chart refer to the following conditions: Airflow: Water flow:
1,200 CFM 6.6 GPM
Maximum sensitive heat output in winter seasons based on indoor temperature and coil water supply temperature
Max sensible heat output (in heating mode) by the pre-heating water coil of the dehumidifier module in function of the indoor temperature to maintain neutral air output (same indoor temperature). Outside temperature: 32 °F Coil supply water temperature: 104 °F Airflow: 1200 CFM
RELATIVE HUMIDITY
WATER TEMPERATURE
55%
65%
AMBIENT TEMPERATURE 78°F
Dehumidifier performance is a function of: - ambient temperature - relative humidity - refrigerated water temperature
9
65°F
240 pints/day
289 pints/day
60°F
300 pints/day
367 pints/day
55°F
356 pints/day
440 pints/day
AMBIENT TEMPERATURE 75°F
Chapter 3
65°F
179 pints/day
216 pints/day
60°F
225 pints/day
276 pints/day
55°F
266 pints/day
329 pints/day
INDOOR TEMPERATURE
WATER TEMP.
68°F
72°F
75°F
82°F
95°F
22,100 Btu/h
19,100 Btu/h
16,300 Btu/h
10,200 Btu/h
104°F
29,600 Btu/h
26,600 Btu/h
23,500 Btu/h
17,700 Btu/h
113°F
40,600 Btu/h
34,100 Btu/h
31,000 Btu/h
24,900 Btu/h
122°F
44,700 Btu/h
41,600 Btu/h
38,500 Btu/h
32,400 Btu/h
131°F
52,200 Btu/h
49,100 Btu/h
46,000 Btu/h
39,900 Btu/h
68°F
72
75°F
82°F
NA Btu/h
NA Btu/h
NA Btu/h
NA Btu/h
INDOOR TEMPERATURE
Sensible heat output (HRV damper set 100% in ventilation)
air • magic 1200 air unit range User's Manual
Chapter 4
SUPPLY (ASP) AVAILABLE STATIC PRESSURE [NTD1200]
10
1.6
AVAILABLE STATIC PRESSURE* (Inch w.c.)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
100
200
300
400
500
600
700
800
AIRFLOW (CFM)
900
1000
1100
1200
1300
S1 - LOW SPEED S2 - MEDIUM SPEED
*ASP is the amount of external static loss (of the ducting) that the unit can overcome at a specific CFM. ASP = ESP of the internal supply blower - DPL internal device losses (e.g. coil)
S3 - HIGH SPEED
air • magic 1200 air unit range User's Manual
Chapter 5
DRAWINGS [NTD1200]
11
anchoring brackets
anchoring brackets supply outlet
return inlet water coil return outlet air relief valve anchoring brackets
RJ45 connector cable feedthroughs water coil supply inlet
supply outlet
return inlet
moisture discharge outlet cable feedthroughs
SUPPLY SIDE AND CONNECTIONS SIDE
electric board cover
CONNECTION SIDE AND RETURN SIDE
air • magic 1200 air unit range User's Manual
Chapter 5
DRAWINGS [NTD1200]
12 ROOM AIR RETURN
718
983
ROOM AIR SUPPLY
TOP VIEW
487
421
819
387
1024
696
552 951
SUPPLY SIDE VIEW
CONNECTIONS SIDE VIEW
RETURN SIDE VIEW
air • magic 1200 air unit range User's Manual
Chapter 6
SCHEMATIC DIAGRAM AND OPERATING PRINCIPLE [NTD1200]
The refrigeration system of the air • magic NTD1200 dehumidifier’s includes two high efficiency rotary compressors with two different size. This technology ensures the maximum extraction with the lowest consumption of electrical energy (up to 50%) activating only one compressor, or their combination, to satisfy the actual sensible heat load. The humid air extracted from the room, through a high-efficiency blower [5] crosses the air filter [1] where the suspended dust particles are separated and eliminated from the air. The air continues through a finned pre-treatment coil [2] that is supplied with the same water circulating in the radiant panel closed loop [10]. This cause a preliminary air temperature drop in order to induce high relative humidity (air saturation). In the next step, the air passes through the evaporator [3] to further lower the air temperature below the dew point. This intense cooling cycle causes the condensation of the water vapor of the air. The resulting water is collected in a specific tank and expelled through the drain. After passing through the evaporator, the air has a low water content and its temperature is below that of the ambient. The air then travels through the condenser coil [4] and is heated until reaching isothermal (neutral temperature air) conditions. The air • magic NTD1200 features an unique operation mode: CONVECTIVE INTEGRATION. The radiant cooling (or heating) effect of the radiant
5
ROOM AIR SUPPLY
4
3
8
13
1
2
ROOM AIR RETURN
7 6A 9A 6B 9B 10
11
1. AIR FILTER
5. BLOWER
9A. PRE-TREATMENT SOLENOID VALVE
2. AIR PRE-TREATMENT COIL
6. COMPRESSOR (A:60% B:40%)
9B. WATER CONDENSER SOLENOID VALVE
3. EVAPORATOR
7. THERMAL EXPANSION VALVE
10. WATER SUPPLY
4. AIR CONDENSER
8. WATER CONDENSER
11. WATER RETURN
ceiling system is “integrated” by a supplemental convective cooling effect (or heating). The radiant circuit water is pumped through the dehumidification unit and its water flow is modulated by controlling the solenoid valves [9A]. This allows to shift from an isothermal condition to an additional air cooling (or air heating) convective integration. In cooling mode (only), the DEHUMIDIFICATION function can also be combined with CONVECTIVE INTEGRATION (cooling). In this case the heat produced in the refrigeration cycle is largely dissipated by the cold water flowing through the additional condenser [8] connected in series with the air condensed [4]. The solenoid valve [9B], controlled by the climate control system (control • mag-
ic), opens to allow the cold water from the hydronic radiant ceiling system to circulate through the water condenser [8]. By controlling the water flow, the supply air temperature can be regulated at a temperature a few degree below the room temperature (below neutral temperature). In heating mode (only) with the FREECOOLING function, the valves [9A] and [9B] are shut to supply fresh external air into the environment, while the CONVECTIVE INTEGRATION function fully opens the valves [9A] and [9B] to intake hot water and heat the room return air and supply air a few degrees above the room temperature (above neutral temperature).
air • magic 1200 air unit range User's Manual
Chapter 7
ROOM AIR DISTRIBUTION [DEHUMIDIFICATION ONLY]
SUPPLY FROM DUCTS AND/OR CEILING PLENUM
The unit air • magic NTD1200, unless combined with the HRV module air • magic HRV1200 or HRV1200HP works only as a dehumidifier at neutral temperature or below ambient temperature when set in CONVECTIVE INTEGRATION mode. The unit can be installed ceiling mounted or floor freestanding. The air • magic NTD1200 units, are able to overcome the air pressure losses of suspended ceiling plenum and supply/return ducts. Air distribution through plenum or ducts are the most appropriate and may also coexist as shown in the examples to the side.
Figure 1 - NEUTRAL TEMPERATURE DISPLACEMENT DISTRIBUTION “A”
Since the dehumidifier is designed only for the extraction of ambient humidity, there are no particular requirements for air distribution. Humidity, in fact, is a pressure and tends to self balancing among various zones, without any ducting. Air naturally moves from areas of higher pressure to areas of lower pressure and the only condition necessary for the migration of moisture between zones is the presence of natural flow opening (e.g. door gaps). Figure 2 - NEUTRAL TEMPERATURE DISPLACEMENT DISTRIBUTION “B”
air • magic 1200 air unit range User's Manual
14
Chapter 7
ROOM AIR DISTRIBUTION [DEHUMIDIFICATION ONLY]
The air • magic NTD1200 units can be ducted allowing installation also in dedicated areas as well as in mechanical rooms external to the conditioned space for easier maintenance.
IMPORTANT NOTE: INSTALLATION MUST ALWAYS BE INDOORS WITH THE UNIT PROTECTED FROM THE ELEMENTS.
Figure 3 - MIXED AIR DISTRIBUTION
air • magic 1200 air unit range User's Manual
15
Chapter 8
HYDRAULIC DIAGRAM
16
The water supply line for the air • magic NTD1200 model must be independent, separate from the manifolds, and sized for the specific water flow required (6.6 GPM). It can be branched both upstream or downstream form the mixing valve of the secondary loop and, if necessary, equipped with a pump that can be controlled by the control • magic radiant cooling and heating electronic control unit. No motorized valves are needed because they are already built into the units (water flow regulation). ray • magic
THERMALCOOLING GENERATION
ray • magic
ray • magic
air • magic NTD1200
air • magic 1200 air unit range User's Manual
Chapter 9
WIRING DIAGRAM
17 TE POWER SUPPLY N 208-230V/60Hz/1Ph L1 HRV BLOWER
HRV MOTORIZED DAMPER
SUPPLY WATER PROBE
CONDENSER PROBE
EVAPORATOR PROBE
SUPPLY AIR PROBE + HUMIDITY
DEHUMIDIFICATION VENTILATION CONVECTIVE INTEGRATION HRV HEATING/COOLING BLOWER SPEED FREECOOLING ECONOMY
G G0
+ GND
B1 B2 B3 GND B4 B5
VG VG0 Y1 Y2 Y3 Y4 ID1 ID2 ID3 ID4 ID5 ID6 ID7 ID8 IDC1
GND + -
C1 NO1 NO2 NO3 C1
RS485 SERIAL BUS
USER CONFIGURATION
C4 NO4 NO5 NO6 C4 C7 NO7 C7 NO8 C8 NO8
NO
C
NO
C
NO
C
NO
C
A2
NC
NO
COM
NC
NC
NO
NO
COM
COM
NC
A1 A2
A1
NC
NO
COM
A1 A2
A2
NO
NC
A1 A2
A1
COM
NO
COM
24V
TRANSFORMER
110-230V
PRE-TREATMENT SOLENOID VALVE
INTEGRATION SOLENOID VALVE
SUPPLY BLOWER
COMPRESSOR 151
COMPRESSOR 222
TE N L1 TE N Vmin Vmed VmAX Y3 G G0 TE N L1 Y4 G G0 IDC1 ID1 IDC1 ID2 IDC1 ID3 IDC1 ID4 IDC1 ID5 IDC1 ID6 IDC1 ID7 IDC1 ID8 G G0 B1 B2 G0 B3 G0 B4 G0 B5 TE N C1 N C2 N Vmin Vmed Vmax Y1 G G0 Y2 G G0 G G0 N L1-Fus.1A TE
A1 A2
A1 A2
A1 A2
air • magic 1200 air unit range User's Manual
Chapter 10
TECHNICAL SPECIFICATIONS [HRV1200]
18
Technical specifications of the Heat Recovery Ventilation (HRV) module air • magic HRV1200 MODEL
air • magic HRV1200
Maximum heat recovery efficiency
%
75
Heat recovery efficiency with primary / exhaust ratio 1/1
%
58
Heat recovery efficiency with primary / exhaust ratio 0.75/1
%
67
Maximum heat recovered*
Btu/h
40,000
Nominal airflow
CFM
1,200
Max. exhaust available static pressure (S3 - High speed) @1200CFM
inch of w.c.
0.58
Ventilation head loss
inch of w.c.
0.4
Recirculation head loss
inch of w.c.
0.24
W (HP)
300 (1/3)
Max. power consumption (S3 - High Speed)
We
430
Rated Amps absorbed*
A
1.7
Max. Amps. absorbed
A
2.2
Vac / Ph / Hz
220 / 1 / 60
Rated power consumption*
Power supply Dust and water protection rating
IP 44
Height
inch
19 1/4
Width
inch
37 1/4
Depth
inch
53 1/2
Weight
Lbs
180
*At the following conditions: external temperature 32°F room supply air at 68°F and outlet air flow equal to inlet
air • magic 1200 air unit range User's Manual
Chapter 11
EXHAUST (ASP) AVAILABLE STATIC PRESSURE [HRV1200]
19
1.6
1.4
AVAILABLE STATIC PRESSURE* (inc of w.c.)
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
100
200
300
400
500
600
700
AIRFLOW (CFM) *ASP is the amount of external static loss (of the ducting) that the unit can overcome at a specific CFM. ASP = ESP of the internal exhaust blower - DPL internal device losses (heat exchanger)
800
900
1000
1100
1200
1300
S1 - LOW SPEED S2 - MEDIUM SPEED S3 - HIGH SPEED
air • magic 1200 air unit range User's Manual
Chapter 12
DRAWINGS [HRV1200]
room air return inlet
20
anchoring bracket anchoring bracket
anchoring bracket outside air inlet
anchoring bracket
anchoring bracket
Optional exhaust air outlet
anchoring bracket
exhaust air outlet
anchoring bracket
moisture drainage air supply plenum for connection with dehumidifier
moisture drainage electric board cover
room air return inlet
outside air inlet
cable passthroughs Optional electric board cover
SUPPLY SIDE AND EXHAUST / CONNECTION SIDE
OUTSIDE AIR SIDE AND ROOM AIR RETURN SIDE
air • magic 1200 air unit range User's Manual
Chapter 12
DRAWINGS [HRV1200] OUTSIDE AIR
21
1238
570 x 398
EXHAUST AIR
1354
398
811
852
570 x 398
ROOM AIR RETURN
1304
402
487
1354
398
945
ROOM AIR RETURN SIDE VIEW
EXTERNAL AIR SIDE VIEW
ROOM AIR SUPPLY
SUPPLY SIDE VIEW
387
TOP VIEW
EXHAUST AIR SIDE VIEW
air • magic 1200 air unit range User's Manual
Chapter 13
WIRING DIAGRAM [HRV1200]
22
The heat recovery unit air • magic HRV1200 is powered and controlled by the electronic board on the dehumidifier air • magic NTD1200.
DAMPER
HRV DAMPER
Vmin Vmed Vmax
BLOWER
TE N
TE N V1 V2 V3 Y3 G G0 TE
IMPORTANT NOTE: Excessive air output could cause a pressure drop in the zones and give rise to a number of problems, which decrease the efficiency of the units.
HRV BLOWER
Electrical connections entail wiring the seven lines exiting the dehumidifier terminal board to that of the recovery unit, taking care to connect the wires according to their names. The recovery unit is already set to supply an airflow less to or equal to intake volume.
air • magic 1200 air unit range User's Manual
NC COM NO
NC COM NO
A2
A1 A1
NC COM NO
A2
A2
A1 A1
NC COM NO
A2
A2
A1 A1
C C NO NO
NC COM NO
A2
A1
A2
A2
C C NO NO
VG VG0 Y1 Y2 Y3 Y4 ID1 ID2 ID3 ID4 ID5 ID6 ID7 ID8 IDC1
B5
B4
B1 B2 B3 GND
+ -
GND
A1
RS485 SERIAL BUS
G G0
23
NO8 C8 NO8
C7 NO7 C7
C1 NO1 NO2 NO3 C1
GND
C4 NO4 NO5 NO6 C4
ELECTRICAL CONNECTIONS BETWEEN NTD1200 AND HRV1200
+
Chapter 14
NC COM NO
DAMPER
BLOWER
TE N V1 V2 V3 Y3 G G0 TE
208-230 Vac
Y3 G G0
THIS CONNECTION MUST BE MADE BY THE INSTALLER
air•magic HRV1200 ELECTRIC BOARD
TE N Vmin Vmed Vmax
Y3 G G0
RS485 SERIAL BUS
air•magic NTD1200 ELECTRIC BOARD
TE N Vmin Vmed Vmax
TE N L1 TE N Vmin Vmed VmAX Y3 G G0 TE N L1 Y4 G G0 IDC1 ID1 IDC1 ID2 IDC1 ID3 IDC1 ID4 IDC1 ID5 IDC1 ID6 IDC1 ID7 IDC1 ID8 G G0 B1 B2 G0 B3 G0 B4 G0 B5 TE N C1 N C2 N Vmin Vmed Vmax Y1 G G0 Y2 G G0 G G0 N L1-Fus.1A TE
208-230 Vac
POWER SUPPLY 208V-230 - 60Hz
TE N L1
air • magic 1200 air unit range User's Manual
Chapter 15
SCHEMATIC AND OPERATING PRINCIPLE [NTD1200 WITH HRV1200]
Adding the heat recovery ventilation air • magic HRV1200 module create a truly compact air treatment unit with extra features described hereafter.
24
RECIRCULATION FUNCTION ROOM AIR RETURN ROOM AIR SUPPLY
1
5
4
3
2
Operating mode diagrams to the side.
1
8
7 13
6A 9A
12
6B 14 9B 10
11
HRV FUNCTION ROOM AIR SUPPLY
ROOM AIR RETURN 1
5
4
3
2 1
OUTSIDE AIR
1. AIR FILTER 2. PRE-TREATMENT COIL 3. EVAPORATOR
8
7
4. AIR CONDENSER) 5. BLOWER
13
6A 9A
6. COMPRESSOR(A:60% B:40%)
12
7. THERMAL EXPANSION VALVE
6B 14 9B 10
8. WATER CONDENSER 9A. PRE-TREATMENT SOLENOID VALVE 9A. WATER CONDENSER SOLENOID VALVE
11 EXHAUST AIR
10. WATER SUPPLY 11. WATER RETURN 12. TWO-WAY MOTORIZED DAMPER 13. CROSS-FLOW HEAT EXCHANGER 14. EXHAUST BLOWER
air • magic 1200 air unit range User's Manual
Chapter 16
OPERATING MODES [NTD1200 AND NTD1200+HRV1200/HRV1200HP]
DEHUMIDIFICATION FUNCTION (air • magic NTD1200 or air • magic NTD1200 + HRV1200/HRV1200HP) This function is used exclusively during the summer. Dehumidification is activated by a specific bus command (Monobus) with RS485 serial connection. Alternatively, the function can be activated by closing the dry contact [DEHUMIDIFICATION] indicated in the wiring diagram (see Chapter 9 and 14). At reception of command, the blower is started followed by the compressor after two minutes. Dehumidification is performed by activating the internal refrigeration circuit that, in tandem with the hydronic circuit, possesses high dehumidification efficiency, thus ensuring neutral temperature room air supply regulated by the modulating valve of the per-treatment coil. The hydronic circuit uses the same cooling water of the radiant panels. Dehumidification is controlled on the basis of set humidity levels or dew point threshold. This action guarantees comfortable hygrometric conditions and high cooling efficiency of the panels. Please keep in mind that panel surface temperature is variable and it is controlled in function of the room dew point; therefore, panel efficiency is highest if humidity levels are kept in check.
The table below contains optimal relative humidity values and dew point temperature in function of the type of building.
BUILDING TYPE
RELATIVE HUMIDITY
DEW POINT TEMP.
RESIDENTIAL
55% ÷ 65%
60°F ÷ 62.5°F
HOTELS
55% ÷ 60%
59°F ÷ 61°F
OFFICES
50% ÷ 55%
57°F ÷ 60°F
STORES
55% ÷ 60%
57°F ÷ 59°F
HOSPITALS
55% ÷ 60%
59°F ÷ 61°F
CONVECTIVE INTEGRATION FUNCTION (air • magic NTD1200 or air • magic NTD1200 + HRV1200/HRV1200HP) This function consist in the convective integration of the radiant effect of the ceiling panels with air that is gently supplied from the dehumidifier at temperature slightly above (heating) or below (cooling) the room air temperature. The convective integration function is activated by a specific bus command (Monobus) with RS485 serial connection. In alternative, the function can also be activated by closing the dry contact [CONVECTIVE INTEGRATION] indicated in the wir-
25
ing diagram (see Chapter 9 and 14). COOLING MODE CONVECTIVE INTEGRATION + DEHUMIDIFICATION This operation engages and opens the internal solenoid valves that regulates the supply water flus into the water condenser and the pre-treatment coils. A large portion of the heat produced by the refrigeration circuit during dehumidification is transferred to the cold water of the radiant system, thus allowing to supply air at a temperature lower that the room temperature. CONVECTIVE INTEGRATION + HRV The convective integration function can also be set for the HRV function. As in the previous case, the valve connected to the pre-treatment coils is opened, thus increasing cold water intake to cool down the incoming air at temperatures lower than room air temperature.
HEATING MODE CONVECTIVE INTEGRATION OR CONVECTIVE INTEGRATION + HRV The convective integration function in heating mode acts on the unit's internal valves, opening them to full hot water intake capacity, thus providing an air output with temperatures above room air temperature.
air • magic 1200 air unit range User's Manual
Chapter 16
OPERATING MODES [NTD1200 AND NTD1200+HRV1200/HRV1200HP]
HRV FUNCTION (only: air • magic NTD1200 + HRV1200/ HRV1200HP) The HRV function is related to the combination of the air • magic HRV1200/HRV1200HP with the air • magic NTD1200. Connecting the HRV module upstream from the dehumidifier air return, creates a compact air treatment station with heat recovery from the exhaust air. The dehumidifier itself reduces internal air moisture, but this add-on module also allows a supply of make-up clean outside air. The air can also be pre-treated (convective integration function) and its level of humidity reduced (dehumidification function) to ensure maximum comfort. Air ventilation can be total or partial (with recirculation) by manually adjusting the damper to the appropriate opening. HRV function is activated by specific bus command (Monobus) with RS485 serial connection. In alternative, the HRV function may also be activated by closing the dry contact [HRV] indicated in the wiring diagram (see Chapter 9 and 14).
HEATING AND COOLING MODES HRV The exhaust and supply air blowers are activated and the two way damper mechanism (recirculation and ventilation) built into the air • magic HRV1200/HRV1200HP unit is activated to close the recirculation bypass and open the ventilation damper. In addition, the internal solenoid valves modulates in order to obtain neutral supply air. COOLING MODE HRV + CONVECTIVE INTEGRATION During particular conditions, the HRV function can be used with the cold convective integration feature. The valves of the plate heat exchanger and of the pre-treatment coil are opened to allow an increase of cold water intake, thus allowing incoming air supply at temperatures below neutral air temperature.
26
FREECOOLING FUNCTION (only: air • magic NTD1200 + HRV1200/ HRV1200HP) Freecooling is activated by a specific bus command (Monobus) and serial connection RS485. This is mostly a winter function when solar radiation overheats environments despite the relatively mild outside temperatures. This function, according to a temperature differential that can be set in regards to set of zones, shut-off hot water intake to the unit by means of its internal valves. The output temperature is no longer adjusted to maintain neutral air but, by intake of cool outside air through the crossflow heat exchanger, allows a supply of cooler room incoming air (in compatibility with outside temperature) to decrease thermal loads inside zones treated.
HEATING MODE HRV+ CONVECTIVE INTEGRATION During particular environmental conditions, the HRV function can be used with the hot convective integration feature. The valves of the plate heat exchanger and of the pre-treatment coil are opened to allow an increase of hot water intake, thus allowing incoming air supply at temperatures above neutral air temperature.
air • magic 1200 air unit range User's Manual
Chapter 17
BASICS OF ROOM AIR DISTRIBUTION
27
Inside a closed space, occupants and operating electrical equipment, produce heat and airborne pollutant particles that are released into the air. Therefore, both people and equipment can be considered heat sources able to activate natural hot air movements, which can be compared to virtual ducts, that push pollutants upward. HVAC systems based on displacement ventilation use these vertical natural convection flows as a mechanism for transporting ambient air, thus obtaining maximum performance with significant energy savings. Incoming air is released at low speeds (~ 100 FPM) from air outlets set near the flooring, and naturally pushes ambient air full of volatile pollutants towards the ceiling vents.
Mixed distribution induces re-mixing of the pollutants present in zones, thus employing - to properly clean air - double the amount of airflow used by a displacement ventilation system. Displacement obtains maximum performance during all seasons in air conditioning systems combined with air treatment, as proposed by the technology Radiant Cooling And Heating Systems. In this mode, air is output at neutral tempera-
ture, equal to that of comfort, exclusively with HRV and DEHUMIDIFICATION functions enabled, given that the control of thermal loads is performed by the radiant panels. Hence, air can be supplied at lower speeds to drastically reduce displacement (~ 80%) and
achieve a correct ambient stratification with consequential exploitation of the “piston” effect across the full mass of air.
air • magic 1200 air unit range User's Manual
Chapter 18
GENERAL AIRFLOW DIAGRAM
28
DUCTS AND / OR CEILING PLENUM
The dehumidifier air • magic NTD1200 [1], combined with the air • magic HRV1200 or HRV1200HP module [2], become a complete air treatment system that can provide neutral air dehumidification, cold and hot air convective integration and heat recovery ventilation. The room air distribution type recommended in conjunction with the use of radiant ceiling panels, is neutral air displacement [Figures 1, 2 and 3]. In many cases, the space above the ray • magic panels can act as a plenum for the exhaust air intake (when air-tightness and insulation conditions exist), with air slots possibly located in the perimeter above windows. This yields various advantages: • reduction of ducting costs and space • conceals exhaust grilles with air inlet slots (which may contain air filters) • directly intakes hot air produced by the windows to avoid its distribution into the environment • reduces the need of primary air due to greater ventilation efficiency (eV) Also in a mixed distribution [Figure 4] the space above the suspended ceiling can be used as exhaust air plenum as well as valuable space for ducting.
1
2
Figure 1 - NEUTRAL AIR DISPLACEMENT DISTRIBUTION “A”
1
2
Figure 2 - NEUTRAL AIR DISPLACEMENT DISTRIBUTION “B”
air • magic 1200 air unit range User's Manual
Chapter 18
GENERAL AIRFLOW DIAGRAM
The best combination of limited ducting space, cost saving and overall efficiency can be seen in figure 3. This figure represents a neutral air displacement system with dropped ceiling plenum for exhaust air intake and return air through a raised-floor air plenum system (messana ayro) with fresh air supplied through a series of floor vents, distributed across the entire flooring surface. This type of distribution, ideal for offices, allows full exploitation of suspended ceilings and raised-floor for the passage of wires and allows a more capillary air distribution. This leads to less airflow per vent and decreases the airflow perception while increasing overall comfort.
29
1
2
Figure 3 - NEUTRAL AIR DISPLACEMENT DISTRIBUTION “C”
1
2
Figure 4 - MIXED AIR DISTRIBUTION
air • magic 1200 air unit range User's Manual
Chapter 19
SUPPLY AVAILABLE STATIC PRESSURE [NTD1200 + HRV1200]
Chapter 19.1
SUPPLY ASP WITH DAMPER IN RECIRCULATION POSITION [NTD1200 + HRV1200] 1.6
AVAILABLE STATIC PRESSURE (inch of w.c.)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
AIRFLOW (CFM) S1 - LOW SPEED) *ASP is the amount of external static loss (of the ducting) that the unit can overcome at a specific CFM. ASP = ESP of the internal supply blower - DPL internal device losses (e.g. coil)
S2 - MEDIUM SPEED S3 - HIGH SPEED
air • magic 1200 air unit range User's Manual
30
Chapter 19
SUPPLY AVAILABLE STATIC PRESSURE [NTD1200 + HRV1200]
Chapter 19.2
SUPPLY ASP WITH DAMPER IN HRV POSITION [NTD1200 + HRV1200]
31
1.6
AVAILABLE STATIC PRESSURE (inch of w.c.)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
100
200
300
400
500
600
700
800
900
AIRFLOW (CFM) *ASP is the amount of external static loss (of the ducting) that the unit can overcome at a specific CFM. ASP = ESP of the internal supply blower - DPL internal device losses (e.g. coil)
1000
1100
1200
1300
S1 - LOW SPEED S2 - MEDIUM SPEED S3 - HIGH SPEED
air • magic 1200 air unit range User's Manual
Chapter 20
TECHNICAL SPECIFICATIONS [HRV1200HP]
WEIGHTS AND DIMENSIONS
ELECTRIC SPECS
THERMAL SPECIFICATIONS
Technical specifications of the Heat Recovery Ventilation (HRV) module air • magic HRV1200HP
32
Maximum heat recovery efficiency
%
170
Heat recovery efficiency (winter)*
%
100
Maximum heat recovered (winter)*
Btu/h
47,000
Heat recovery efficiency (summer)**
%
110
Maximum heat recovered (summer)**
Btu/h
36,000
Nominal airflow
CFM
1,200
Max. available static pressure (S3 - High speed)
inch of w.c.
0.58
Ventilation head loss
inch of w.c.
0.48
Recirculation head loss
inch of w.c.
0.24
Refrigerant gas R410a
oz.
63.5
Max. power consumption (S3 - High speed)
W
1,700
Vac / Ph / Hz
220 / 1 / 60
Power supply Dust and water protection rating
IP 44
Height
inch
19 1/4
Width
inch
40
Depth
inch
57
Weight
Lbs
255
* At the following conditions: external temperature 32°F room supply air at 68°F and outlet air flow equal to inlet ** At the following conditions: external temperature 95°F room supply air at 78.8°F and outlet air flow equal to inlet
air • magic 1200 air unit range User's Manual
Chapter 21
DRAWINGS [HRV1200HP]
room air return inlet
33
anchoring bracket
anchoring bracket
anchoring bracket outside air inlet
anchoring bracket
anchoring bracket
Optional exhaust air outlet anchoring bracket exhaust air outlet anchoring bracket
air supply plenum for connection with dehumidifier
moisture drainage electric board cover
outside air inlet
room air return inlet
Optional electric board cover cable passthroughs
SUPPLY SIDE AND EXHAUST / CONNECTION SIDE
OUTSIDE AIR SIDE AND ROOM AIR RETURN SIDE
air • magic 1200 air unit range User's Manual
Chapter 21
34
DRAWINGS [HRV1200HP] OUTSIDE AIR
1328 570 x 398
EXHAUST AIR
871
570 x 398
912
ROOM AIR RETURN
1394
EXTERNAL AIR SIDE VIEW
ROOM AIR SUPPLY
1005
ROOM AIR RETURN SIDE VIEW
402
487
398
1444
387
TOP VIEW
1444
SUPPLY SIDE VIEW
EXHAUST AIR SIDE VIEW
air • magic 1200 air unit range User's Manual
WIRING DIAGRAM HRV1200HP
A2
A1
C
A1
G G0
NC COM
B1 B2 B3 B4 GND
A1
NC
C1 NO1 NO2 NO3 C4 NO4 NO5 C5
COM NO
A1
GND + -
A2
NO
RS485 SERIAL BUS
Y1 Y2 Y3 GND ID1 ID2 ID3 ID4 ID5 ID6 IDC1
A2
NO
DIGITAL INPUT
EXHAUST EXCHANGER PROBE
SUPPLY ECHANGER PROBE
INLET PROBE
SUPPLY PROBE
HEAT PUMP PRESSURE SWITCH
VENTILATION CONVECTIVE INTEGRATION HRV HEATING/COOLING BLOWER SPEED EXCHANGER
C
OUTPUT FOR FAN
TE N L1 TE N L1 G0 G Y2 Y3 GND B1 B2 B3 B4 ID1 ID2 ID3 ID4 ID5 ID6 N L1-Fus.1A G0 G G0 G Y1 TE N Vmin Vmed Vmax 4WV COM TE
NO
POWER SUPPLY TE 208-230V/60Hz/1Ph N L1
35
A2
Chapter 22
NC COM NO
COMPRESSOR
CHANGE OVER VALVE
BLOWER
DAMPER
M
TRANSFORMER
110-230V 24V
air • magic 1200 air unit range User's Manual
Chapter 23
SCHEMATIC AND OPERATING PRINCIPLE [NTD1200 WITH HRV1200HP]
RECIRCULATION FUNCTION The air • magic NTD1200 unit can be combined with the HRV module (optional) air • magic HRV1200HP (with integrated air-to-air Heat Pump) to create a complete air handling system for radiant cooling application.
ROOM AIR SUPPLY
5
4
ROOM AIR RETURN
1
2 17
1 13
8
When ventilation need are high, the air • magic NTD1200, combined with the active heat recovery ventilation unit, air • magic NTD1200HP, is the preferred solution The air • magic NTD1200HP features an air-toair heat pump to extract the residual energy of the air before his expulsion. This allow to increase the efficiency of the heat recovery much more than 100%. In addition to the enormous energy savings, the active heat recovery ventilation allows ventilation of the building even when the external conditions are prohibitive and the traditional system would be forced to be set in a partial recirculation and therefore wouldn’t meet the ventilation requirement.
3
36
7 6A 16 9A
12
6B
15
9B
14
6C 10
11
HRV FUNCTION ROOM AIR RETURN
1. AIR FILTER 2. PRE-TREATMENT COIL
ROOM AIR SUPPLY
5
4
3
1
2
3. EVAPORATOR 4. AIR CONDENSER
17
5. BLOWER
1
6. COMPRESSOR(A:60% B:40%) 6C. HRV COMPRESSOR 8
7. THERMAL EXPANSION VALVE
7 13
6A
16 9A
6B
OUTSIDE AIR
12
8. WATER CONDENSER 9A. PRE-TREATMENT SOLENOID VALVE 9A. WATER CONDENSER SOLENOID VALVE 10. WATER SUPPLY
15
11. WATER RETURN
Operating mode diagrams to the side.
9B
6C 10
14
12. TWO-WAY MOTORIZED DAMPER 13. CROSS-FLOW HEAT EXCHANGER
11 EXHAUST AIR
14. EXHAUST BLOWER 15. CHANGE OVER VALVE 16. HEAT RECOVERY COIL 17. HEAT REINSTATEMENT COIL
air • magic 1200 air unit range User's Manual
Chapter 24
DRAWINGS (NTD1200 WHIT HRV1200)
Chapter 24.1
air • magic NTD1200 + air • magic HRV1200
37
anchoring bracket room air return inlet outside air inlet
anchoring bracket anchoring bracket anchoring bracket
exhaust air outlet
anchoring bracket
room air supply outlet
NTD1200 SUPPLY SIDE
electric board cover air / magic RR 2000
electric board cover air / magic HI 2000
NTD1200 CONNECTION AND HRV1200 EXHAUST SIDE
air • magic 1200 air unit range User's Manual
Chapter 24
DRAWINGS (NTD1200 WITH HRV1200)
Chapter 24.1
air • magic NTD1200 + air • magic HRV1200
38
OUTSIDE AIR
1364
EXHAUST AIR
1770
ROMM AIR RETURN
HRV1200
NTD1200
ROOM AIR SUPPLY
TOP VIEW
air • magic 1200 air unit range User's Manual
Chapter 24
DRAWINGS [NTD1200 WITH HRV1200HP]
Chapter 24.2
air • magic NTD1200 + air • magic HRV1200HP
39
anchoring bracket
room air return inlet outside air inlet anchoring bracket anchoring bracket anchoring bracket
exhaust air outlet
anchoring bracket
room air supply outlet
electric board cover air magic RRA 2000
electric board cover air magic HI 2000
NTD1200 SUPPLY SIDE
NTD1200 CONNECTION AND HRV1200HP EXHAUST SIDE
air • magic 1200 air unit range User's Manual
Chapter 24
DRAWINGS [NTD1200 WITH HRV1200HP]
Chapter 24.2
air • magic NTD1200 + air • magic HRV1200HP
40
OUTSIDE AIR
1454,5
EXHAUST AIR
1825,5
ROMM AIR RETURN
HRV1200HP
NTD1200
ROOM AIR SUPPLY
TOP VIEW
air • magic 1200 air unit range User's Manual
air • magic FAN1200
The air • magic FAN1200 is an optional module to increase the available static pressure of the dehumidification blower (supply blower) when the dehumidifier is combined with the HRV module (air • magic HRV1200 or air • magic HRV1200HP) and the head loss of the ducting require additional static pressure This module can also be combined with an HRV module (air • magic HRV1200 or HRV1200HP) and work as the air supply blower to create a stand alone HRV unit without the dehumidification unit.
THERMAL SPECS
Capitolo 25.1
41
ELECTRICAL SPECS
ACCESSORIES
WEIGHTS AND DIMENSIONS
Chapter 25
Airflow Max. available static pressure
Max. power consumption Power supply
CFM
1200
inch of w.c.
0.88
W
300
Vac / Ph / Hz
220 / 1 / 60
Dust and water protection rating
IP 44
Height
inch
19.17
Width
inch
28.31
Depth
inch
30.63
Weight
lbs.
38.90
air • magic 1200 air unit range User's Manual
Chapter 25
ACCESSORIES
Chapter 25.1
air • magic FAN1200
487
anchoring bracket
42
anchoring bracket inlet
anchoring bracket
SUPPLY SIDE VIEW
BACK SIDE VIEW 730
719
500
anchoring bracket
supply
electric board cover integration coil compartment (optional)
778
TOP VIEW
air • magic 1200 air unit range User's Manual
inlet(1/2”M)
Chapter 25.2
43
ACCESSORIES Hydronic heating and cooling coil for air • magic FAN1200
The optional hydronic heating and cooling coil can be installed when the air • magic FAN1200 is combined with and an HRV module (air • magic HRV1200 or HRV1200HP) and works as supply air blower.
THERMAL SPECS
Chapter 25
moisture discharge output (3/4 inch)
Heating output (water temperature 95°F) *
Btu/h
24,200
Cooling output (water temperature 59°F) **
Btu/h
13,600
ft of head
5
foot of head
8.36
Water circuit loss of head Air loss of head
* Air inlet temperature 50°F - 60%HR. ** Air inlet temperature 86°F - 50%HR.
The unit is supplied with the water of the closed loop radiant system, and works as a pre-cooling (or pre-heating) coil to cool down (or heat up) the outside air before entering the HRV. This allows to introduce in the ambient cooler air (or hotter, depending on the season).
41
459
700
water outlet(1/2”M) SIDE VIEW
water inlet(1/2”M)
73
moisture discharge output (3/4 inch)
TOP VIEW
700
41
air • magic 1200 air unit range User's Manual
Chapter 25
ACCESSORIES
44
Chapter 25.3
air • magic FAN1200 + air • magic HRV1200 (or HRV1200HP) 1454
anchoring bracket room air return inlet outside air inlet anchoring bracket optional outside air inlet anchoring bracket
anchoring bracket
1731
anchoring bracket
anchoring bracket exhaust air outlet anchoring bracket
anchoring bracket
HRV1200 - HRV1200HP
moisture drenage room air supply outlet
hydronic module electric board
FAN1200 electric board Optional electric board
AXIOMETRIC VIEW
cable feedthroughs
OVERHEAD VIEW
air • magic 1200 air unit range User's Manual
Chapter 26
DRAWINGS [NTD1200 WITH HRV1200HP]
45
ASSEMBLY: NTD1200 DEHUMIDIFIER WITH HRV1200HP (ACTIVE HRV MODULE) Glue the four gaskets [3] onto the dehumidifier air • magic NTD1200 [1] around the inlet vent, bring the recovery unit air • magic HRV1200HP [4] close to the dehumidifier while lining them up; use the bracket [2] with the 4 (dimensions 6x10 mm) to couple the two units; conclude the operation with the corner piece [5] and other 4 screws (dimensions 6x10 mm). The recovery unit is powered via the dehumidifier: connect the lines from the dehumidifier terminals with the recovery unit terminals having the same code. A second bracket [5] is supplied as replacement to bracket [2] for reverse coupling of the recovery unit: in this set-up the exhaust air is on the side opposite to the dehumidifier connection port.
3
4
2
1
5
air • magic 1200 air unit range User's Manual
Chapter 26
INSTALLATION CLEARANCES
The dehumidifiers air • magic NTD1200, which can be coupled to the HRV module air • magic HRV1200 or HRV1200HP, were designed for ceiling hanging and freestanding floor installation.
46
For proper machine operation and maintenance, both scheduled and extraordinary, the minimum clearance must be respected during installation, as shown in the figures below [Figures A and B].
Make sure that unit is installed with a slight tilt or is plumbed to facilitate the condensation tank drainage towards the discharge.
air • magic NTD1200 with air • magic HRV1200 or HRV1200HP
air • magic NTD1200
12”
12”
ROOM AIR SUPPLY
4”
20”
ROOM AIR SUPPLY
12”
20”
ELECTRIC BOARD ACCESS
12”
ELECTRIC BOARD ACCESS ROOM AIR RETURN
AIR FILTER ROOM AIR RETURN
EXHAUST AIR
12”
AIR FILTERS
OUTSIDE AIR
Figure A - TOP VIEW
Figure B - TOP VIEW
air • magic 1200 air unit range User's Manual
Chapter 26
INSTALLATION
CEILING INSTALLATION [Figure C] Ceiling installation depicts bracketing the machine in a hanging position using the brackets supplied [1]. These must be connected to appropriate anti-vibration elements [2], selected in function of the type of ceiling anchors [3], and regularly installed. It is necessary to mount on the ceiling [4] an inspection hatch or panel [5] to carry out scheduled maintenance on the unit (air filter cleaning, checking the refrigeration circuit, access to the electrical panel, etc...). Whenever the structure allows, it is best that the ceiling opening be large enough for complete unit dismounting. The need to line the internal part of the dropped ceiling with soundproof cladding should be evaluated if installing the unit in a noise-sensitive zone.
47 FREESTANDING FLOOR INSTALLATION [Figure D] Freestanding floor installation entails positioning the unit on a flat surface [6] on supports. These last must be connected to appropriate anti-vibration brackets [7], selected by the installer and mounted professionally. Dehumidifier maintenance can be easily done from overhead.
3
2
1
2
1
ELECTRIC BOARD COVER
4 5
Figure C - CEILING INSTALLATION
7
7
ELECTRIC BOARD COVER
6
Figure D - FREESTANDING INSTALLATION
air • magic 1200 air unit range User's Manual
Chapter 26
INSTALLATION
48
MOISTURE DISCHARGE An appropriate siphon must be connected in the vicinity of the unit for each condensate discharge, both for the dehumidifier and the HRV module when the latter is part of the system. The siphon can be emptied when the unit is idle. At the start of each summer season, the siphon must be "reactivated" by pouring water into the condensation collection tank located beneath the treatment coil. This fills the siphon with water and avoids the situation where air intake through the siphon impedes regular condensation discharge. Ensure that all panels are correctly installed and secured with their screws before starting the unit. Important Note: Running the unit when panels are not properly mounted can cause serious unit malfunctions (low efficiency, condensate discharge difficulties with leaks from the unit, etc.).
AIRTIGHT CONNECTION BETWEEN MOISTURE DISCHARGE OUTLET AND SIPHON
Figure E - MOISTURE DISCHARGE: CEILING INSTALLATION
AIRTIGHT CONNECTION BETWEEN MOISTURE DISCHARGE OUTLET AND SIPHON
Figure E - MOISTURE DISCHARGE: FREESTANDING INSTALLATION
air • magic 1200 air unit range User's Manual
Chapter 26
INSTALLATION
49
FROST PROTECTION If the outside intake air is very cold and/or there is a chilled wind there is a risk that the pre- and post- treatment water coils may be damaged. In order to protect the unit from any possible damage when the machine is not in use it is best to adopt - as determined by the installer and/or designer - a frost protection system by means of: insertion of glycol into the refrigeration circuit, frost protection dampers or any other adequate measures.
PRE AND POST TREATMENT COIL
CAUTION: The coils may rupture if the water freezes.
NTD1200
WATER SUPPLY AND RETURN
HRV1200 or HRV1200HP
air • magic 1200 air unit range User's Manual
50
Radiant Cooling And Heating Systems reserves the right to modify the machine specifications in this manual without advance notice. Radiant Cooling And Heating Systems declines any liabilities for any inexactness due to printing errors and / or entries contained therein. The instructions, drawings, tables and information generally included in this technical manual are confidential and may not be duplicated, neither in whole nor in part, or disclosed to third parties without written authorization of Radiant Cooling And Heating Systems who owns all exclusive intellectual rights thereof.
air • magic 1200 air unit range User's Manual
Messana Air-Ray Conditioning LLC 2224 Albert Ln, Capitola, CA, 95010 Phone/Fax: (855) RAY-MAGIC (729-6244)
[email protected] www.raymagic.com
