McQuay MWH011B User manual

MWH-B-2005
Horizontal Water Source Heat
Pumps And Cooling Only Unit
Models: MWH 011 B/BR
MWH 012 B/BR
MWH 015 B/BR
MWH 020 B/BR
MWH025 B/BR MWH 070 B/BR
MWH 030B/BR
MWH 040B/BR
MWH 050B/BR
MWH 060B/BR

Contents
Features ....................................................................................................................... 2
Nomenclature ............................................................................................................... 3
Specifications .........................................................................................................4 - 7
Operating range ............................................................................................................ 8
Noise Level .................................................................................................................. 9
Performance Table ..............................................................................................10 - 11
Fan Performance Table ................................................................................ 12- 21
Outline Dimension ...............................................................................................22- 24
Wiring Diagrams ..................................................................................................25- 36
Refrigerant Diagrams ..........................................................................................37- 40
Safety Precaution Before Installation ...................................................................... 41
Installation .................................................................................................................. 42
Controller Error Code ................................................................................................44
Servicing and Maintenance ...................................................................................... 45
Trouble Shooting ......................................................................................................46
Overall Checking ....................................................................................................... 47
Cleaning System Flushing ....................................................................................... 48
Startup ...................................................................................................................... 49
Part Lists ............................................................................................................ 50 - 63
Note: Installation and maintenance are to be performed only by qualified personnel who are
familiar with local codes and regulations, and experienced with this type of equipment,
Caution: Sharp edges and coil surfaces are a potential injury hazard. Avoid contact with them.
Warning: Moving machinery and electrical power hazards. May cause severe personal injury or death.
Disconnect and lock off power before servicing equipment.
"McQuay" is a registered trademark of McQuay International. All rights reserved throughout the world.
2005McQuay International
"Bulletin illustrations cover the general appearance of McQuay International products at the time of publication
and we reserve the right to make changes in design and construction at any time without notice."
1

Features
• High Energy Efficiency Rating
The McQuay MWH series of water source heat pumps have energy efficiency ratings as high as 16 and provide
better energy consumption than that of most conventional air-cooled systems.
• Packaged Unit. Compact. Low Height Profile.
The McQuay MWH series of horizontal water source heat pumps is a packaged unit consisting of compressor (2 off in
MWH025 and above), coil, tube in tube heat exchanger, expansion device and forward curved centrifugal blower. All
units in this series have a very low profile, from 250mm for the MWH011B/BR, which has a horizontal compressor, to
the largest unit in the range at 500mm.
• No Separate Outdoor Unit
The packaged design concept eliminates the need for a separate outdoor unit. Also, the tube in tube heat exchangers
in the MWH range do not need a fan to transfer heat load, resulting in a much quieter environment for building
occupants.
• Double Isolation Panel, Less Vibration
Unlike other conventional designs, the MWH series of water source heat pumps apply a double insulation concept,
where the compressor is mounted on an extra upper panel. Vibration generated by the compressor is absorbed twice
to the rubber grommets, before it reaches the unit casing.
• Extremely Quiet Design
No outdoor fan, double isolation panel for compressor, superior insulation and use of twin rotary compressors in
models above MWH025B/BR all add up to a quieter design. Particularly in night set back mode.
• Application Flexibility
The McQuay MWH B/BR series has a wide range of operational temperatures. This means the entering water
temperatures can be adjusted from 13°C – 45°C for cooling and 10°C – 32°C for heating.
• Safety Protection Devices
Several safety protection devices are integrated into the MWH B/BR range of heat pumps to monitor their operation
as well as provide necessary protection for all standard operational functions.
• Partial Loading Capability
For MWH025B/BR to MWH070B/BR, which are having two compressors in their system, the capacity loading of
compressors are able to controlled at 50% or 100%.
• Sequencing Control
For the MWH025B/BR to MWH070B/BR, the compressors are able to operate in sequencing mode. This will allow
both compressors to cut in and out according to their accumulative run times. This dramatically improves the
compressor life and reliability.
2

Nomenclature
M WH 030 BR
Brand Name Nominal nil - Cooling Only
(McQuay) Cooling Capacity R - Heat Pump
Water Source Generation
Heat Pump
3

Specifications
Cooling only
MWH011B MWH012B MWH015B MWH020B MWH025B
kW 3.4 3.5 4.2 5.7 7.6
Btu/h 11600 12000 14400 19500 26000
EFFECTIVE INPUT POWER (COOLING) W755 740 1210 1450 1720
NOMINAL INPUT POWER W 790 775 1253 1561 1894
NOMINAL RUNNING CURRENT A 3.5 3.5 5.9 7.5 8.9
4.5 4.8 3.5 3.9 4.4
POWER SOURCE V/Ph/Hz
SOUND PRESSURE LEVEL dBA 42 37 41 45 47
HEIGHT mm (in) 250 (9.8) 325 (12.8) 337 (13.3) 353 (13.9) 340 (13.4)
WIDTH mm (in) 1040 (40.9) 1035 (40.7) 1074 (42.3) 1183 (46.6) 1328 (52.3)
DEPTH mm (in) 495 (19.5) 500 (19.7) 500 (19.7) 540 (21.3) 540 (21.3)
UNIT WEIGHT kg (lb) 58 (128) 61 (134) 68 (150) 71 (157) 101 (223)
11112
Hor. Rotary Rotary Rotary Rotary Rotary
μF30 25 40 45 25
LOCKED ROTOR AMP A 19 18 32 35 22 x2
RATED RUNNING CURRENT A 3.1 3.1 5.5 6.1 7.5
RATED INPUT POWER W 700 692 1151 1350 1577
QUANTITY 22222
EXTERNAL STATIC PRESSURE Pa (mmAq) 60 (6.1) 60 (6.1) 60 (6.1) 120 (12.1) 129 (13)
AIR FLOW RATE L/s (cfm) 180 (380) 180 (380) 222 (470) 287 (600) 415 (870)
RATED RUNNING CURRENT A 0.43 0.37 0.45 0.92 1.42
RATED INPUT POWER W 90 83 102 211 317
MOTOR OUTPUT W 60 36 51 120 200
WALL THICKNESS mm (in) 0.33 (0.013) 0.33 (0.013) 0.3 (0.012) 0.33 (0.013) 0.3 (0.012)
OUTER DIAMETER mm (in) 9.52 (3/8) 9.52 (3/8) 9.52 (3/8) 9.52 (3/8) 9.52 (3/8)
THICKNESS mm (in)
TYPE HEAT EXCHANGER
set 11112
WATER CONNECTION IN & OUT (MPT) mm (in)
m3/h (gpm) 0.60 (2.65) 0.75 (3.31) 0.90 (3.98) 1.05 (4.64) 1.70 (7.51)
mm (in)
kPa 6.7 8.2 9.8 11.6 22
HIGH PRESSURE SWITCH psi
LOW PRESSURE SWITCH psi
kg 0.58 0.63 0.75 0.75 0.50 / 0.58
lb 1.28 1.39 1.65 1.65 1.10 / 1.28
Test condition:
Cooling Ambient temp. : 27°C DB / 19°C WB Water In : 30°C Water Out : 35°C
Heating Ambient temp. : 20°C Water In : 20°C
REFRIGERANT CHARGE
* All specification above are subjected to change by manufacturer without prior notice.
EXPANSION DEVICE
AIR FILTER
19.05 (3/4")
426 off; 340 on
DRAIN PIPE CONNECTION
NOMINAL WATER PRESSURE DROP
7 off; 22 on
UNIT PROTECTION
4
Aluminium
MOTOR
12.7 (1/2)
TYPE
Tube In Tube (Finned Tube)
Washable Saranet
WATER CIRCUIT
QUANTITY
Capillary Tube
TYPE/ DRIVE
MATERIAL
WATER FLOW RATE
Permanent Split Capacitor / Direct Drive
FINNED COIL
Inner Groove Copper
POLES
TYPE
14
0.11 (0.0043)
FPI
TUBE
FIN
COMPRESSOR
QUANTITY
Centrifugal Forward Curve
TYPE
MATERIAL
TYPE Bare & Hydrophilic
220-240 / 1 / 50
R22
Blow Through
FAN
TYPE
CAPACITOR
COP (COOLING)
UNIT AIR FLOW TYPE
DIMENSION
MODEL
REFRIGERANT
NOMINAL COOLING CAPACITY
4

Cooling only
MWH030B MWH040B MWH050B MWH060B MWH070B
kW 8.8 13.2 14.6 18.5 22.4
Btu/h 29920 44870 49880 63160 76460
NOMINAL INPUT POWER (COOLING) W2485 3897 4482 5505 6041
NOMINAL RUNNING CURR. (COOLING) A11.9 18.6 21.6 13.3 14.8
3.5 3.4 3.3 3.4 3.7
POWER SOURCE V/Ph/Hz
SOUND PRESSURE LEVEL dBA50 50 51 53 53
HEIGHT mm (in) 370 (14.6) 434 (17.1) 434 (17.1) 500 (19.7) 500 (19.7)
WIDTH mm (in) 1297 (51.1) 1376 (54.2) 1376 (54.2) 1576 (62.0) 1576 (62.0)
DEPTH mm (in) 745 (29.3) 792 (31.2) 792 (31.2) 843 (33.2) 843 (33.2)
UNIT WEIGHT kg (lb) 107 (238) 143 (315) 147 (324) 210 (463) 220 (485)
22222
Rotary Rotary Rotary Scroll Scroll
μF60 50 50 NA NA
LOCKED ROTOR AMP A28 42 48 40 46
RATED RUNNING CURR. (COOLING) A10.0 14.9 17.7 8.2 9.4
RATED INPUT POWER (COOLING) W2035 2997 3532 4305 4741
QUANTITY 11122
EXTERNAL STATIC PRESSURE Pa (mmAq) 190 (19.4) 270 (27.6) 290 (29.6) 210 (21.4) 270 (27.6)
AIR FLOW RATE L/s (cfm) 450 (940) 625 (1325) 710 (1470) 900 (1910) 915 (1940)
RATED RUNNING CURRENT A1.9 3.7 3.9 5.1 5.4
RATED INPUT POWER W450 900 950 600 x2 650 x2
MOTOR OUTPUT W425 830 880 375 x2 400 x2
WALL THICKNESS mm (in)
OUTER DIAMETER mm (in)
THICKNESS mm (in) 14 11 14 14 14
TYPE HEAT EXCHANGER
set 22222
WATER CONNECTION IN & OUT (MPT) mm (in)
m3/h (gpm) 1.70 (7.5) 2.54 (11.2) 2.91 (12.8) 3.63 (16.0) 4.45 (19.6)
mm (in)
kPa 4.25 21.3 33 40 58
HIGH PRESSURE SWITCH psi
LOW PRESSURE SWITCH psi
kg 0.7 x2 0.8 x2 0.85 x2 1.05 x2 1.2 x2
lb 1.55 x2 1.77 x2 1.88 x2 2.32 x2 2.65 x2
Test condition:
Cooling Ambient temp. : 27°C DB / 19°C WB Water In : 30°C Water Out : 35°C
Heating Ambient temp. : 20°C Water In : 20°C
NOMINAL WATER PRESSURE DROP
0.05~0.15MPa
UNIT PROTECTION
EXPANSION DEVICE
TYPE
AIR FILTER
TYPE
Capillary Tube
Washable Saranet
FIN
MATERIAL Aluminium
TYPE Corrugated
FPI
POLES 4
FINNED COIL
TUBE
MATERIAL Inner Groove Copper
0.33 (0.013)
9.52 (3/8")
220-240 / 1 / 50 380-415 / 3 / 50
REFRIGERANT R22
* All specification above are subjected to change by manufacturer without prior notice.
2.4~2.8MPa
WATER CIRCUIT
QUANTITY 19.05 (3/4) 25.4 (1)
WATER FLOW RATE
DRAIN PIPE CONNECTION
Tube In Tube
19.05 (3/4")
TYPE
CAPACITOR
FAN
REFRIGERANT CHARGE
TYPE Centrifugal Forward Curve
MOTOR
TYPE/ DRIVE Permanent Split Capacitor / Direct Drive Direct Drive
Draw Through
DIMENSION
COMPRESSOR
QUANTITY
MODEL
NOMINAL COOLING CAPACITY
COP (COOLING)
UNIT AIR FLOW TYPE
5

Heat Pump
MWH011BR MWH012BR MWH015BR MWH020BR MWH025BR
kW 3.4 3.5 4.2 5.7 7.6
Btu/h 11600 12000 14400 19500 26000
kW3.8 3.7 4.3 5.0 8.4
Btu/h 13000 12700 14800 17000 28800
EFFECTIVE INPUT POWER (COOLING) W 755 740 1210 1550 1720
EFFECTIVE INPUT POWER (HEATING) W 710 710 1110 1250 1670
NOMINAL INPUT POWER (COOLING) W 790 775 1253 1661 1894
NOMINAL INPUT POWER (HEATING) W 745 745 1153 1361 1844
NOMINAL RUNNING CURR. (COOLING) A3.5 3.5 5.9 7.5 8.9
NOMINAL RUNNING CURR. (HEATING) A 3.3 3.4 5.5 6.2 8.7
4.5 4.8 3.5 3.7 4.4
5.4 5.2 3.9 4.0 5.1
POWER SOURCE V/Ph/Hz
SOUND PRESSURE LEVEL dBA42 37 41 45 47
HEIGHT mm (in) 250 (9.8) 325 (12.8) 337 (13.3) 353 (13.9) 340 (13.4)
WIDTH mm (in) 1040 (40.9) 1035 (40.7) 1074 (42.3) 1183 (46.6) 1328 (52.3)
DEPTH mm (in) 495 (19.5) 500 (19.7) 500 (19.7) 540 (21.3) 540 (21.3)
UNIT WEIGHT kg (lb) 58 (128) 61 (134) 68 (150) 71 (157) 101 (223)
11112
Hor. Rotary Rotary Rotary Rotary Rotary
μF30 25 40 45 25
LOCKED ROTOR AMP A 19 18 32 35 22 x2
RATED RUNNING CURR. (COOLING) A3.1 3.1 5.5 6.5 7.5
RATED RUNNING CURR. (HEATING) A 2.9 3.2 5.1 5.2 8
RATED INPUT POWER (COOLING) W 700 692 1151 1450 1577
RATED INPUT POWER (HEATING) W 655 712 1051 1150 1637
QUANTITY22222
EXTERNAL STATIC PRESSURE Pa (mmAq) 60 (6.1) 60 (6.1) 60 (6.1) 120 (12.1) 129 (13)
AIR FLOW RATE L/s (cfm) 180 (380) 180 (380) 222 (470) 287 (600) 415 (870)
RATED RUNNING CURRENT A0.43 0.37 0.45 0.92 1.42
RATED INPUT POWER W 90 83 102 211 317
MOTOR OUTPUT W60 36 51 120 200
WALL THICKNESS mm (in) 0.33 (0.013) 0.33 (0.013) 0.3 (0.012) 0.33 (0.013) 0.3 (0.012)
OUTER DIAMETER mm (in) 9.52 (3/8) 9.52 (3/8) 9.52 (3/8) 9.52 (3/8) 9.52 (3/8)
THICKNESS mm (in)
TYPE HEAT EXCHANGER
set 11112
WATER CONNECTION IN & OUT (MPT) mm (in)
m3/h (gpm) 0.60 (2.65) 0.75 (3.31) 0.90 (3.98) 1.05 (4.64) 1.70 (7.51)
mm (in)
kPa 6.7 8.2 9.8 11.6 22
HIGH PRESSURE SWITCH psi
LOW PRESSURE SWITCH psi
kg 0.58 0.63 0.75 0.80 0.50 / 0.58
lb 1.28 1.39 1.65 1.76 1.10 / 1.28
Test condition:
Cooling Ambient temp. : 27°C DB / 19°C WB Water In : 30°C Water Out : 35°C
Heating Ambient temp. : 20°C Water In : 20°C
COP (COOLING)
UNIT AIR FLOW TYPE
DIMENSION
MODEL
REFRIGERANT
NOMINAL COOLING CAPACITY
NOMINAL HEATING CAPACITY
COP (HEATING)
220-240 / 1 / 50
R22
Blow Through
FAN
TYPE
CAPACITOR
FPI
TUBE
FIN
COMPRESSOR
QUANTITY
Centrifugal Forward CurveTYPE
MATERIAL
TYPE Bare & Hydrophilic
TYPE/ DRIVE
MATERIAL
WATER FLOW RATE
Permanent Split Capacitor / Direct Drive
FINNED COIL
Inner Groove Copper
POLES
TYPE
14
0.11 (0.0043)
4
Aluminium
MOTOR
12.7 (1/2)
TYPE
Tube In Tube (Finned Tube)
Washable Saranet
WATER CIRCUIT
QUANTITY
Capillary Tube
EXPANSION DEVICE
AIR FILTER
19.05 (3/4")
426 off; 340 on
DRAIN PIPE CONNECTION
NOMINAL WATER PRESSURE DROP
7 off; 22 on
UNIT PROTECTION
REFRIGERANT CHARGE
* All specification above are subjected to change by manufacturer without prior notice.
6

Heat Pump
MWH030BR MWH040BR MWH050BR MWH060BR MWH070BR
kW 8.8 13.2 14.6 18.5 22.4
Btu/h 29920 44870 49880 63160 76460
kW9.3 15.1 16.6 20.0 22.4
Btu/h 31600 51520 56500 68140 76460
NOMINAL INPUT POWER (COOLING) W2485 3897 4482 5505 6041
NOMINAL INPUT POWER (HEATING) W2533 3995 4433 5846 6236
NOMINAL RUNNING CURR. (COOLING) A 11.9 18.1 21.6 13.4 14.8
NOMINAL RUNNING CURR. (HEATING) A12.1 18.7 21.2 13.9 15.2
3.5 3.4 3.3 3.4 3.7
3.7 3.8 3.7 3.4 3.6
POWER SOURCE V/Ph/Hz
SOUND PRESSURE LEVEL dBA51.0 51.0 53.0 56.0 53
HEIGHT mm (in) 370 (14.6) 434 (17.1) 434 (17.1) 500 (19.7) 500 (19.7)
WIDTH mm (in) 1297 (51.1) 1376 (54.2) 1376 (54.2) 1576 (62.0) 1576 (62.0)
DEPTH mm (in) 745 (29.3) 792 (31.2) 792 (31.2) 843 (33.2) 843 (33.2)
UNIT WEIGHT kg (lb) 110 (245) 146 (322) 150 (331) 215 (474) 225 (496)
22222
Rotary Rotary Rotary Scroll Scroll
μF60 50 50 NA NA
LOCKED ROTOR AMP A28 42 48 40 46
RATED RUNNING CURR. (COOLING) A10.0 14.4 17.7 8.3 9.4
RATED RUNNING CURR. (HEATING) A10.2 15.0 17.3 8.8 9.8
RATED INPUT POWER (COOLING) W2035 2997 3532 4305 4741
RATED INPUT POWER (HEATING) W 2083 3095 3483 4646 4936
QUANTITY11122
EXTERNAL STATIC PRESSURE Pa (mmAq) 190 (19.4) 270 (27.6) 290 (29.6) 210 (21.4) 270 (27.6)
AIR FLOW RATE L/s (cfm) 450 (940) 625 (1325) 710 (1470) 900 (1910) 915 (1940)
RATED RUNNING CURRENT A1.9 3.7 3.9 5.1 5.4
RATED INPUT POWER W 450 900 950 600 x2 650 x2
MOTOR OUTPUT W425 830 880 375 x2 400 x2
WALL THICKNESS mm (in)
OUTER DIAMETER mm (in)
THICKNESS mm (in) 14 11 14 14 14
TYPE HEAT EXCHANGER
set 22222
WATER CONNECTION IN & OUT (MPT) mm (in)
m3/h (gpm) 1.70 (7.5) 2.54 (11.2) 2.91 (12.8) 3.63 (16.0) 4.45 (19.6)
mm (in)
kPa 4.25 21.3 33 40 58
HIGH PRESSURE SWITCH psi
LOW PRESSURE SWITCH psi
kg 0.75 x2 0.85 x2 1.0 x2 1.45 x2 1.45 x2
lb 1.66 x2 1.88 x2 2.2 x2 3.2 x2 3.2 x2
Test condition:
Cooling Ambient temp. : 27°C DB / 19°C WB Water In : 30°C Water Out : 35°C
Heating Ambient temp. : 20°C Water In : 20°C
220-240 / 1 / 50 380-415 / 3 / 50
COP (COOLING)
UNIT AIR FLOW TYPE
R22
Draw Through
MODEL
REFRIGERANT
NOMINAL COOLING CAPACITY
NOMINAL HEATING CAPACITY
COP (HEATING)
FAN
TYPE
CAPACITOR
DIMENSION
COMPRESSOR
QUANTITY
Centrifugal Forward CurveTYPE
WATER FLOW RATE
FINNED COIL Inner Groove Copper
POLES
TYPE
FPI
FIN
MOTOR
TYPE
Tube In Tube
Washable Saranet
WATER CIRCUIT
TYPE/ DRIVE
MATERIAL
TUBE
Permanent Split Capacitor / Direct Drive Direct Drive
MATERIAL
TYPE
0.05~0.15MPa
25.4 (1)19.05 (3/4)
QUANTITY
Capillary Tube
Corrugated
UNIT PROTECTION
19.05 (3/4")
EXPANSION DEVICE
AIR FILTER
REFRIGERANT CHARGE
* All specification above are subjected to change by manufacturer without prior notice.
2.4~2.8MPa
DRAIN PIPE CONNECTION
NOMINAL WATER PRESSURE DROP
4
Aluminium
0.33 (0.013)
9.52 (3/8")
7

Operation Range
Heating Cooling
Water Entering Temp. (°C) Water Entering Temp. (°C)
Indoor temp. (°CDB) Indoor temp. (°CWB)
15 21.1 27
10
STD
13
15 24
STD
21.1
32
19.4
29.4
45
8

Noise Level
SOUND PRESSURE LEVEL (MEASURED IN ANECHOIC ROOM)
Overall Noise
125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz A (dBA) Criteria
S.High 48 41 40 37 31 24 14 42 36
High 44 40 40 36 29 23 15 41 35
Medium 46 39 38 35 27 21 13 40 34
Low 44 37 37 33 26 20 13 38 32
S.High 42 40 34 31 24 20 17 37 30
High 41 38 32 30 21 21 18 35 29
Medium 41 36 30 30 21 21 17 34 29
Low 39 34 29 30 18 22 16 33 29
S.High 46 42 39 36 29 24 24 41 35
High 46 42 38 35 29 24 24 40 34
Medium 45 41 38 35 28 24 24 40 34
Low 46 39 36 33 27 23 23 39 32
S.High 52 48 43 39 34 28 23 45 38
High 52 46 42 39 33 27 23 44 38
Medium 51 45 41 37 32 27 22 43 36
Low 51 42 39 36 31 25 22 41 35
S.High 51 51 45 41 35 28 22 47 40
High 54 50 45 39 34 27 20 47 40
Medium 54 49 44 38 32 25 18 46 39
Low 54 48 43 37 29 22 16 44 38
High 35 41 39 40 38 28 19 51 39
Medium 34 37 39 40 35 27 17 49 39
Low 32 37 39 39 35 24 16 48 38
High 44 39 42 40 40 37 30 54 41
Medium 42 38 40 39 39 36 28 52 40
Low 40 37 40 38 37 34 25 51 38
High 42 39 44 42 40 37 30 53 41
Medium 40 38 44 40 39 35 29 52 40
Low 40 36 42 39 38 33 27 51 39
High 42 42 44 43 37 32 22 56 42
Medium 42 41 43 42 37 31 21 55 41
Low 41 40 43 42 35 30 20 54 41
High 35 38 44 44 38 28 19 53 43
Medium 35 38 44 43 37 28 17 53 42
Low 34 36 42 42 33 22 14 51 41
Microphone position:
1.5m below the centre of the unit. (Tested with 2m length duct at the air discharge outlet and 1m duct
at the air return inlet)
Model Speed 1/1 Octave Sound Pressure Level (dB, ref 20
μ
Pa)
MWH011B/BR
MWH012B/BR
MWH025B/BR
MWH015B/BR
MWH020B/BR
MWH070B/BR
MWH030B/BR
MWH040B/BR
MWH050B/BR
MWH060B/BR
9