Mitsubishi Electric PUHZ-W50VHA User manual

CONTENTS
1. What is ATW heat pump?.......................................................2
2. Heat pump unit_General information...................................4
3. System design......................................................................15
4. Interface (I/F)........................................................................23
5. Flow temp. controller (FTC).................................................55
6. Requirements........................................................................90
7. System example ...................................................................91
June 2008
Air to Water (ATW) Heat pump,
Interface (I/F) and Flow temp. controller (FTC)
Technical manual

2
Pressure loss (kPa)
0
5
10
15
20
25
30
35
40
45
50
51015202530
Flow rate (L/min)
What is ATW heat pump?1
1-1. Compare with conventional fossil fuel boiler
• Heat pumps produce water at 30°C – 60°C
• Ideal for underfloor heating
• Average underfloor heating circuit 35°C
• Fossil fuel boilers heat water to 80°C
• Flow temp in rads design temp approx 70°C
• Heat pumps can still be used with radiators
• Larger surface area to emit heat from lower temp water
1-2. Points to notice
1-2-1. Design (Radiator sizing)
• Careful consideration must be given to appropriate application of this technology to maximise its benefits – it will not suit all
properties, especially many retrofits
• Heat emitters may need to be larger
• Lower flow temperatures maximise COP
• Various regulations apply to the design and installation of such systems
• Because the flow temp. of heat pump is low compare to fossile fuel boiler, the temperature difference between the primary (flow
water) and secondary (room air) becomes little, it makes the heat emission little.
To emit the same amount of heat energy, it is needed to select the radiator that has a larger surface area.
Be especially careful of the surface area when you design the radiator.
1-2-2. Defrost
Note: Occasionally, vapor that is made by the defrost operation may seem as if smoke come up from the outdoor unit.
1-2-3. Water Pressure loss (for packaged type outdoor unit)
• Water pressure lose of the heat exchangers are as follows.
Be aware of the influence when you design total pipng system.
Hex for PUHZ-W50VHA (ACH30-30Plates) Secondary (Water - side)
Flow rate (L/min) 5 10 15 20 25 30
Pressure Loss (kPa) 1.7 6.0 12.4 20.9 31.4 43.8

33
Pressure loss (kPa)
0.0
5.0
10.0
15.0
20.0
25.0
30.0
51015202530
Flow rate (L/min)
Pressure loss (kPa)
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
15 30 45 60 75 90
Flow rate (L/min)
Hex for PUHZ-W85VHA (ACH30-40Plates) Secondary (Water - side)
Flow rate (L/min) 5 10 15 20 25 30
Pressure Loss (kPa) 1.0 3.6 7.5 12.5 18.8 26.2
Hex for PUHZ-W112, 140VHA / YHA (ACH50-50Plates)
Secondary (Water - side)
Flow rate (L/min) 15 30 45 60 75 90
Pressure Loss (kPa) 1.3 4.9 10.9 19.3 29.9 42.8

4
Heat pump unit_General information2
2-1. Line-up
2-1-1. Outdoor unit for Air to water
(1) Packaged type: The Air to Water outdoor unit with a plate HEX (refrigerant-water) inside
Connectable models
Capacity
( HP ) Packaged models ZUBADAN-Packaged models
1-phase 3-phase 1-phase 3-phase
2 PUHZ-W50VHA — — —
3 PUHZ-W85VHA — — —
4 — — — PUHZ-HW112YHA
5 — — PUHZ-HW140VHA PUHZ-HW140YHA
(2) Split type: The standard outdoor unit without a plate HEX (refrigerant-water) inside
Connectable models
Capacity
( HP ) Split Replace inverter models Split ZUBADAN models
1-phase 3-phase 1-phase 3-phase
2.5 PUHZ-RP60VHA3#1 — — —
3 PUHZ-RP71VHA3#1 — PUHZ-HRP71VHA(2) —
4 PUHZ-RP100VHA3#1 PUHZ-RP100YHA3#1 PUHZ-HRP100VHA(2) PUHZ-HRP100YHA(2)
5 PUHZ-RP125VHA2#2 PUHZ-RP125YHA2#2 — PUHZ-HRP125YHA(2)
6 PUHZ-RP140VHA2#2 PUHZ-RP140YHA2#2 — —
* Outdoor units (PUHZ-RP or PUHZ-P) other than the above-mentioned become possible by connecting TH5 ( 2-phase refrig-
erant temp. thermistor ) with the interface only for Air to Air use.
2-1-2. Air to Air application
INTER FACE MODEL NAME PAC-IF011B-E / PAC-IF010-E
AUTO
STEP *1 OUTDOOR UNIT 35 50 60 71 100 125 140 200 250
PUHZ-HRP — — — VHA(2) V/YHA(2) YHA(2) — — —
PUHZ-RP VHA3 VHA3 VHA3 VHA3 V/YHA3 V/YHA2 V/YHA2 YHA2 YHA2
PUHZ-P — — — — VHA2 VHA2 VHA2 YHA YHA
SUZ-KA VA VA VA VA — — — — —
PUH-P — — — V/YHA V/YHA YHA YHA MYA MYA
MANUAL
STEP *2 OUTDOOR UNIT 35 50 60 71 100 125 140 200 250
PUHZ-HRP — — — VHA V(Y)HA YHA — — —
PUHZ-RP VHA3 VHA3 VHA3 VHA3 V/YHA3 V/YHA2 V/YHA2 YHA2 YHA2
MANUAL STEP MODE is New function of INTER FACE (Fixed capacity = Compressor frequency (Hz) fixed mode) .
2 Phase (Gas/Liquid) pipe thermistor is required (TH5).
Also, Interface P.C.B. SW2-6 need to be set "OFF (No LEV self control mode)" .
<Old models : The models that are not described in the table above.>
*1: With(Auto-mode)+(SW2-6 is OFF)+(2phase thermistor), all A-control outdoor units are able to connect to PAC-IF010/
011B-E only for Air to Air use.
*2: With(Manual-mode)+(SW2-6 is OFF)+(2phase thermistor), from following RP type outdoor units are able to connect to
PAC-IF010/011B-E only for Air to Air use.
PUHZ-RP35V, 50V, 60V, 71V,100V/Y,125V/Y,140V/YHA2¹
PUHZ-RP200Y, 250YHA²

55
2-1-3. Reference manual
Outdoor unit Service
manual Parts catalog
PUHZ-W50VHA
OCH439 OCB439
PUHZ-W85VHA
PUHZ-HW112YHA
PUHZ-HW140VHA
PUHZ-HW140YHA
PUHZ-RP60VHA3#1
PUHZ-RP71VHA3#1
PUHZ-RP100VHA3#1
PUHZ-RP125VHA2#2
OC374 OC374
PUHZ-RP140VHA2#2
PUHZ-RP100YHA3#1
PUHZ-RP125YHA2#2
PUHZ-RP140YHA2#2
PUHZ-HRP71VHA(2)
OCH425 OCB425
PUHZ-HRP100VHA(2)
PUHZ-HRP100YHA(2)
PUHZ-HRP125YHA(2)
Type Model name Parts catalog
I/F cased PAC-IF011B-E OCB427
PCB only PAC-IF010-E —
FTC cased PAC-IF021B-E OCB427
PCB only PAC-IF020-E —
2-2. Data
2-2-1. Packaged type
Refer to each model's service manual.
2-2-2. Split
[1]Specifications(Reference data(connect to plate heat exchanger))
Rating conditions
Nominal operating condition
Heating (A2/W35)
Outside air temperature (Dry-bulb) +2:
Outside air temperature (Wet-bulb) +1:
Water temperature (inlet/outlet) +30/+35:
Heating (A7/W35)
Outside air temperature (Dry-bulb) +7:
Outside air temperature (Wet-bulb) +6:
Water temperature (inlet/outlet) +30/+35:
Heating (A7/W45)
Outside air temperature (Dry-bulb) +7:
Outside air temperature (Wet-bulb) +6:
Water temperature (inlet/outlet) +40/+45:

6
Plate heat exchanger
ALFA LAVAL
ACH50
Maximum outlet water temperature
The performance might be decreased by the refrigerant
pipng length, insulation of refrigerant pipng and
heat exchanger (Water HEX).
w
H
D
Water IN
Ref.OUT
(Heating)
Ref.IN
(Heating)
Water OUT
B
A
Ambient temperature [ °C ]
-25 -20
65
60
55
50
45
40 -15 -10 -5 0 5 10
Maximum outlet water temptemperature [°C
]
A: 50 mm
B: 466 mm
W: 112 mm
H: 526 mm
D: 130 mm
50 plates
Refrigerant pipng length from outdoor unit to
heat exchanger (Water HEX): 5m
(1) PUHZ-HRP • V/YHA2
Outdoor unit
Model name PUHZ-HRP71VHA2
Power supply
(Phase, Voltage, Frequency) 1[, 230V, 50Hz
Breaker size A 32
Nominal water flow L/min 22.9
Heating
(A2/W35) Capacity kW 8.00
COP 3.24
Power input 2.47
Heating
(A7/W35) Capacity kW 8.00
COP 4.40
Power input 1.82
Heating
(A7/W45) Capacity kW 8.00
COP 3.24
Power input 2.47
Outdoor unit
Model name PUHZ-HRP100VHA2 /
PUHZ-HRP100YHA2
Power supply
(Phase, Voltage, Frequency) 1[, 230V, 50Hz / 3[, 400V, 50Hz
Breaker size A 40 / 16
Nominal water flow L/min 32.1
Heating
(A2/W35) Capacity kW 11.20
COP 3.02
Power input 3.71
Heating
(A7/W35) Capacity kW 11.20
COP 4.26
Power input 2.63
Heating
(A7/W45) Capacity kW 11.20
COP 3.24
Power input 3.46
Heating
(A7/W55) Capacity kW 11.20
COP 2.40
Power input 4.67
Outdoor unit
Model name PUHZ-HRP125YHA2
Power supply
(Phase, Voltage, Frequency) 3[, 400V, 50Hz
Breaker size A 16
Nominal water flow L/min 40.1
Heating
(A2/W35) Capacity kW 14.00
COP 2.70
Power input 5.19
Heating
(A7/W35) Capacity kW 14.00
COP 4.22
Power input 3.32
Heating
(A7/W45) Capacity kW 14.00
COP 3.20
Power input 4.38
Guaranteed operating range (Outdoor)
Heating :-25 ~ +35
Cooling :-5 ~ +46

7
(2) PUHZ-RP • VHA3/YHA3(2)
Outdoor unit
Model name PUHZ-RP60VHA3#1
Power supply
(Phase, Voltage, Frequency) 1[, 230V, 50Hz
Breaker size A 25
Nominal water flow L/min 20.1
Heating
(A2/W35)
Capacity kW 6.80
COP 2.94
Power input kW 2.31
Heating
(A7/W35)
Capacity kW 7.00
COP 4.29
Power input kW 1.63
Heating
(A7/W45)
Capacity kW 7.00
COP 3.27
Power input kW 2.14
Outdoor unit
Model name PUHZ-RP71VHA3#1
Power supply
(Phase, Voltage, Frequency) 1[, 230V, 50Hz
Breaker size A 25
Nominal water flow L/min 22.9
Heating
(A2/W35)
Capacity kW 7.50
COP 2.92
Power input kW 2.57
Heating
(A7/W35)
Capacity kW 8.00
COP 4.21
Power input kW 1.90
Heating
(A7/W45)
Capacity kW 8.00
COP 3.20
Power input kW 2.50
Guaranteed operating range (Outdoor)
Heating :-11 ~ +35
Cooling :-5 ~ +46
Plate heat exchanger
ALFA LAVAL
ACH50
Maximum outlet water temperature
The performance might be decreased by the refrigerant
pipng length, insulation of refrigerant pipng and
heat exchanger (Water HEX).
w
H
D
Water IN
Ref.OUT
(Heating)
Ref.IN
(Heating)
Water OUT
B
A
Ambient temperature [ °C ]
65
60
55
50
45 -10 -5 0 5 10
Maximum outlet water temptemperature [°C
]
A: 50 mm
B: 466 mm
W:112 mm
H: 526 mm
D: 82 mm
30 plates
Refrigerant pipng length from outdoor unit to
heat exchanger (Water HEX): 5m

8
Outdoor unit
Model name PUHZ-RP100VHA3#1 /
PUHZ-RP100YHA3#1
Power supply
(Phase, Voltage, Frequency) 1[, 230V, 50Hz / 3[, 400V, 50Hz
Breaker size A 32 / 16
Nominal water flow L/min 32.1
Heating
(A2/W35)
Capacity kW 10.50
COP 2.90
Power input kW 3.62
Heating
(A7/W35)
Capacity kW 11.20
COP 4.21
Power input kW 2.66
Heating
(A7/W45)
Capacity kW 11.20
COP 3.20
Power input kW 3.50
Outdoor unit
Model name PUHZ-RP125VHA2#2 /
PUHZ-RP125YHA2#2
Power supply
(Phase, Voltage, Frequency) 1[, 230V, 50Hz / 3[, 400V, 50Hz
Breaker size A 32/16
Nominal water flow L/min 40.1
Heating
(A2/W35)
Capacity kW 11.50
COP 2.70
Power input kW 4.26
Heating
(A7/W35)
Capacity kW 14.00
COP 4.15
Power input kW 3.37
Heating
(A7/W45)
Capacity kW 14.00
COP 3.10
Power input kW 4.51
Outdoor unit
Model name PUHZ-RP140VHA2#2 /
PUHZ-RP140YHA2#2
Power supply
(Phase, Voltage, Frequency) 1[, 230V, 50Hz / 3[, 400V, 50Hz
Breaker size A 40/16
Nominal water flow L/min 45.9
Heating
(A2/W35)
Capacity kW 11.70
COP 2.69
Power input kW 4.35
Heating
(A7/W35)
Capacity kW 16.00
COP 3.90
Power input kW 4.10
Heating
(A7/W45)
Capacity kW 16.00
COP 3.00
Power input kW 5.34
Guaranteed operating range (Outdoor)
Heating :-20 ~ +35
Cooling :-5 ~ +46
Plate heat exchanger
ALFA LAVAL
ACH50
Maximum outlet water temperature
The performance might be decreased by the refrigerant
pipng length, insulation of refrigerant pipng and
heat exchanger (Water HEX).
w
H
D
Water IN
Ref.OUT
(Heating)
Ref.IN
(Heating)
Water OUT
B
A
Ambient temperature [ °C ]
-20 -15
65
60
55
50
45
40 -10 -5 0 5 10
Maximum outlet water temptemperature [°C
]
A: 50 mm
B: 466 mm
W:112 mm
H: 526 mm
D: 130 mm
50 plates
Refrigerant pipng length from outdoor unit to
heat exchanger (Water HEX): 5m

9
[2]Standard operation data <Split> Reference data (connect to Plate HEX)
(1) PUHZ-HRP • V/YHA2 ACH50-50 plates
Mode Cooling
(A35/W7) Heating (A7/W35) Cooling (A35/W7) Heating (A7/W35) Cooling (A35/W7) Heating (A7/W35)
Total
Capacity W 7,100 8,000 10,000 11,200 12,500 14,000
Input kW 2.20 1.82 3.67 2.61 4.80 3.50
Electrical circuit
Outdoor unit PUHZ-HRP71VHA2 PUHZ-HRP100VHA2/
PUHZ-HRP100YHA2 PUHZ-HRP125YHA2
Phase, Hz 1, 50 1/3, 50 3, 50
Voltage V 230 230 / 400 400
Current A 9.9 8.2 16.5/5.6 11.7/4.0 7.3 5.3
Refrigerant circuit
Discharge pressure MPa 2.4 2.0 2.6 2.1 2.8 2.3
Suction pressure MPa 0.8 0.7 0.8 0.7 0.8 0.7
Discharge temperature :70 60 78 63 84 70
Condensing temperature :42 35 46 36 47 39
Suction temperature :126114103
Evaporating temperature :525251
Evaporator inlet temperature :5—5—5—
Evaporator outlet temperature :5—5—5—
Condenser inlet temperature :—55—60—65
Condenser outlet temperature :—33—31—30
Water
conditions
Flow volume L/min 20.4 22.9 28.7 34.4 35.8 40.1
Outlet water temperature :735735735
Outdoor
conditions
Intake air temperature D.B. :357357357
W.B. :246246246
The unit of pressure has been changed to MPa based on international SI system.
The conversion factor is : 1(MPa)=10.2(kgf/F)

10
(2) PUHZ-RP • VHA3/YHA3(2) ACH50-30 plates ACH50-50 plates
Mode Cooling
(A35/W7) Heating (A7/W35) Cooling (A35/W7) Heating (A7/W35) Cooling (A35/W7) Heating (A7/W35)
Total
Capacity W 6,000 7,000 6,600 8,000 9,100 11,200
Input kW 2.31 1.63 2.59 1.90 3.31 2.66
Electrical circuit
Outdoor unit PUHZ-RP60VHA3#1 PUHZ-RP71VHA3#1 PUHZ-RP100VHA3#1/
PUHZ-RP100YHA3#1
Phase, Hz 1, 50 1, 50 1/3, 50
Voltage V 230 230 230 / 400
Current A 10.3 7.2 11.4 8.4 14.5 / 5.1 11.8 / 4.1
Refrigerant circuit
Discharge pressure MPa 2.7 2.1 2.7 2.2 2.6 2.1
Suction pressure MPa 0.8 0.7 0.8 0.7 0.8 0.7
Discharge temperature :70 65 70 66 74 65
Condensing temperature :45 36 45 36 44 36
Suction temperature :454265
Evaporating temperature :515151
Evaporator inlet temperature :6—6—5—
Evaporator outlet temperature :5—5—5—
Condenser inlet temperature :—56—57—58
Condenser outlet temperature :—34—33—35
Water
conditions
Flow volume L/min 17.2 20.1 18.9 22.9 26.1 32.1
Outlet water temperature :735735735
Outdoor
conditions
Intake air temperature D.B. :357357357
W.B. :246246246
The unit of pressure has been changed to MPa based on international SI system.
The conversion factor is : 1(MPa)=10.2(kgf/F)