Mitsubishi Electric PUHZ-ZRP35VKA2 User manual

SERVICE MANUAL R410A
PARTS CATALOG (OCB635)
CONTENTS
1. REFERENCE MANUAL····························2
2. SAFETY PRECAUTION····························2
3. FEATURES ············································6
4. SPECIFICATIONS ···································7
5. DATA ····················································8
6. OUTLINES AND DIMENSIONS················ 11
7. WIRING DIAGRAM································ 13
8. WIRING SPECIFICATIONS····················· 15
9. REFRIGERANT SYSTEM DIAGRAM ·········· 20
10. TROUBLESHOOTING···························· 22
11. FUNCTION SETTING ····························· 77
12. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ···86
13. EASY MAINTENANCE FUNCTION··········· 95
14. DISASSEMBLY PROCEDURE················· 97
PUHZ-ZRP35VKA2
PUHZ-ZRP50VKA2
Note:
•This manual describes
service data of the out-
door units only.
OCH635 is void.
Revision:
•Connectable indoor units
have been added in
REVISED EDITION-A.
No. OCH635
REVISED EDITION-A
July 2020
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
Outdoor unit
[Model Name] [Service Ref.]
PUHZ-ZRP35VKA2 PUHZ-ZRP35VKA2
PUHZ-ZRP35VKA2-ER
PUHZ-ZRP35VKA2-ET
PUHZ-ZRP50VKA2 PUHZ-ZRP50VKA2
PUHZ-ZRP50VKA2-ER
PUHZ-ZRP50VKA2-ET
PUHZ-ZRP60VHA2 PUHZ-ZRP60VHA2
PUHZ-ZRP60VHA2-ER
PUHZ-ZRP60VHA2-ET
PUHZ-ZRP71VHA2 PUHZ-ZRP71VHA2
PUHZ-ZRP71VHA2-ER
PUHZ-ZRP71VHA2-ET

2
OCH635A
2-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminal, all supply circuits must be disconnected.
INDOOR UNIT SERVICE MANUAL
2SAFETY PRECAUTION
2-2. CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R410A
Preparation before the repair service.
• Prepare the proper tools.
• Prepare the proper protectors.
• Provide adequate ventilation.
• After stopping the operation of the air conditioner, turn off
the power-supply beaker.
• Discharge the condenser before the work involving the
electric parts.
Precautions during the repair service.
• Do not perform the work involving the electric parts
with wet hands.
• Do not pour water into the electric parts.
• Do not touch the refrigerant.
• Do not touch the hot or cold areas in the refrigerating cycle.
• When the repair or the inspection of the circuit needs to be
done without turning off the power, exercise great caution
not to touch the live parts.
Use new refrigerant pipes.
In case of using the existing pipes for R22, be careful with
the following.
· Be sure to clean the pipes and make sure that the insides
of the pipes are clean.
· Change flare nut to the one provided with this product.
Use a newly flared pipe.
· Avoid using thin pipes.
Use a vacuum pump with a reverse flow check
valve.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil, etc.
1REFERENCE MANUAL
Model Name Service Ref. Service
Manual No.
PLA-ZP35/50/60/71EA PLA-ZP35/50/60/71EA.UK OCH625
OCB625
PLA-RP35/50/60/71EA PLA-RP35/50/60/71EA.UK OCH626
OCB626
PCA-RP35/50/60/71KAQ PCA-RP35KAQR2 PCA-RP35KAQR2-ER
PCA-RP50/60/71KAQR1
OCH491
OCB491
PCA-RP71HAQ PCA-RP71HAQ
PCA-RP71HAQ-ER OCH492 OCB492
PKA-RP35/50HAL PKA-RP35/50HALR1
PKA-RP35/50HALR1-ER OCH453 OCB453
PKA-RP60/71KAL PKA-RP60/71KALR1.TH
PKA-RP60/71KALR1.TH-ER OCH452 OCB452
PSA-RP71KA PSA-RP71KA OCH528
OCB528
PEAD-RP35/50/60/71JA(L)Q PEAD-RP35/50/60/71JA(L)QR1.UK HWE10090
BWE10160
PEAD-M35/50/60/71JA(L)Q PEAD-M35/50/60/71JA(L).UK HWE16130
BWE017010
PEAD-M50/60/71JA(L).TH
SLZ-KF35VA SLZ-KF35VA.TH OCH600
OCB600

3
OCH635A
[1] Cautions for service
(1) Perform service after recovering the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
[2] Additional refrigerant charge
When charging directly from cylinder
(1) Check that cylinder for R410A on the market is a syphon type.
(2) Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
Unit
Electronic weighing scale
Make sure that the inside and outside of refrige-
rant piping is clean and it has no contaminants
such as sulfur, oxides, dirt, shaving particles, etc,
which are hazard to refrigerant cycle.
In addition, use pipes with specified thickness.
Contamination inside refrigerant piping can cause deterio-
ration of refrigerant oil, etc.
Store the piping indoors, and both ends of the
piping sealed until just before brazing.
(Leave elbow joints, etc. in their packaging.)
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
The refrigerant oil applied to flare and flange
connections must be ester oil, ether oil or
alkylbenzene oil in a small amount.
If large amount of mineral oil enters, that can cause deterio-
ration of refrigerant oil, etc.
Charge refrigerant from liquid phase of gas
cylinder.
If the refrigerant is charged from gas phase, composition change
may occur in refrigerant and the efficiency will be lowered.
Do not use refrigerant other than R410A.
If other refrigerant (R22, etc.) is used, chlorine in refrige-
rant can cause deterioration of refrigerant oil, etc.
Handle tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigera-
nt will change and the efficiency will be lowered.
Use the following tools specifically designed for
use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Flare tool
Electronic refrigerant
charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R410A
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the
unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the
spec labels provided with our products.
We will not be held responsible for mechanical failure,
system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
Use the specified refrigerant only.

Perform the airtight test, vacuum air purging,
additional refrigerant charging (if necessary),
and gas leak check.
• Refer to the owchart below to determine if the existing pipes can be used and if it is necessary to use a lter dryer.
• If the diameter of the existing pipes is di󰀨erent from the specied diameter, refer to technological data materials to conrm if
the pipes can be used.
▼
▼
▼
▼
▼
▼▼
Measure the existing pipe thickness and
check for damage.
The existing pipe thickness meets specica-
tions and the pipes are not damaged.
Check if the existing air conditioner can operate.
After operating the cooling system for about 30
minutes, do a pump down work.
Disconnect the existing air conditioner from the
pipes.
Attach the new air conditioner
Test run The existing pipes cannot be reused.
Use new pipes.
Note:
If the existing air conditioner cannot operate, use a
refrigerant recovery device to collect the refrigerant.
Note:
Use new pipes for ZRP35-71 models.
The existing pipe thickness does not meet
specications or the pipes are damaged.
4
OCH635A
2-3. PRECAUTIONS WHEN REUSING EXISTING R22 REFRIGERANT PIPES
(1) Flowchart
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No. Tool name Specifications
1Gauge manifold · Only for R410A
· Use the existing fitting specifications. (UNF1/2)
· Use high-tension side pressure of 5.3MPa·G or over.
2Charge hose · Only for R410A
· Use pressure performance of 5.09MPa·G or over.
3Electronic scale —
4Gas leak detector · Use the detector for R134a, R407C or R410A.
5Adaptor for reverse flow check · Attach on vacuum pump.
6Refrigerant charge base —
7Refrigerant cylinder · Only for R410A · Top of cylinder (Pink)
· Cylinder with syphon
8Refrigerant recovery equipment —

5
OCH635A
(2) Cautions for refrigerant piping work
New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is same
as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working
pressure of R410A is 1.6 times higher than that of R22, their sizes of flared sections and flare nuts are different.
1Thickness of pipes
Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness
shown below. (Never use pipes of 0.7 mm or below.)
2Dimensions of flare cutting and flare nut
The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that,
R410A is a refrigerant, which has higher risk of leakage because its working pressure is higher than that of other refriger-
ants. Therefore, to enhance airtightness and strength, flare cutting dimension of copper pipe for R410A has been speci-
fied separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A also
has partly been changed to increase strength as shown below. Set copper pipe correctly referring to copper pipe flaring
dimensions for R410A below. For 1/2 and 5/8 inch pipes, the dimension B changes.
Use torque wrench corresponding to each dimension.
3Tools for R410A (The following table shows whether conventional tools can be used or not.)
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
0.8
0.8
0.8
1.0
—
0.8
0.8
0.8
1.0
1.0
Nominal
dimensions(inch)
Diagram below: Piping diameter and thickness
Outside
diameter (mm)
Thickness (mm)
R410A R22
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
9.1
13.2
16.6
19.7
—
9.0
13.0
16.2
19.4
23.3
Nominal
dimensions(inch)
Flare cutting dimensions
Outside
diameter(mm) R410A R22
Dimension A ( )
+0
-0.4 (mm)
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
17.0
22.0
26.0
29.0 *
—
17.0
22.0
24.0
27.0
36.0
Nominal
dimensions(inch)
Flare nut dimensions Outside
diameter(mm) Dimension B
R410A
* 36.0mm for
indoor unit
of RP100,
125 and 140
R22
(mm)
Gauge manifold
Charge hose
Gas leak detector
Refrigerant recovery equipment
Refrigerant cylinder
Applied oil
Safety charger
Charge valve
Vacuum pump
Flare tool
Bender
Pipe cutter
Welder and nitrogen gas cylinder
Refrigerant charging scale
Vacuum gauge or thermis-
tor vacuum gauge and
vacuum valve
Charging cylinder
Air purge, refrigerant charge
and operation check
Gas leak check
Refrigerant recovery
Refrigerant charge
Apply to flared section
Prevent compressor malfunction
when charging refrigerant by
spraying liquid refrigerant
Prevent gas from blowing out
when detaching charge hose
Vacuum drying and air
purge
Flaring work of piping
Bend the pipes
Cut the pipes
Weld the pipes
Refrigerant charge
Check the degree of vacuum. (Vacuum
valve prevents back flow of oil and refri-
gerant to thermistor vacuum gauge)
Refrigerant charge
Tool exclusive for R410A
Tool exclusive for R410A
Tool for HFC refrigerant
Tool exclusive for R410A
Tool exclusive for R410A
Ester oil and alkylbenzene
oil (minimum amount)
Tool exclusive for R410A
Tool exclusive for R410A
Tools for other refrigerants can
be used if equipped with adap-
ter for reverse flow check
Tools for other refrigerants
can be used by adjusting
flaring dimension
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants
can be used
Tool exclusive for R410A
Tools and materials Use R410A tools Can R22 tools be used?
(Usable if equipped
with adapter for rever-
se flow)
(Usable by adjusting
flaring dimension)
Can R407C tools be used?
Ester oil:
Alkylbenzene oil: minimum amount
(Usable if equipped
with adapter for rever-
se flow)
(Usable by adjusting
flaring dimension)
: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.)
: Tools for other refrigerants can be used under certain conditions.
: Tools for other refrigerants can be used.
Dimension A
Dimension B

6
OCH635A
3 FEATURES
CHARGELESS SYSTEM
PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT
Maximum 30 m (PUHZ-ZRP35–71)
The refrigerant circuit with LEV (Linear Expansion Valve) and power receiver always control the optimal refrigerant level
regardless of the length (30 m maximum and 5 m minimum) of piping. The additional refrigerant charging work during instal-
lation often causes problems. It is completely eliminated by chargeless system. This unique system improves the quality
and reliability of the work done. It also helps to speed up the installation time.
PUHZ-ZRP35VKA2
PUHZ-ZRP35VKA2-ER
PUHZ-ZRP35VKA2-ET
PUHZ-ZRP50VKA2
PUHZ-ZRP50VKA2-ER
PUHZ-ZRP50VKA2-ET
PUHZ-ZRP60VHA2
PUHZ-ZRP60VHA2-ER
PUHZ-ZRP60VHA2-ET
PUHZ-ZRP71VHA2
PUHZ-ZRP71VHA2-ER
PUHZ-ZRP71VHA2-ET

7
OCH635A
4 SPECIFICATIONS
A
kW
W
kW
K
/min (CFM )
dB
dB
mm (inch)
mm (inch)
mm (inch)
kg (lb)
kg (lb)
L
mm (inch)
mm (inch)
Power supply (phase, cycle, voltage)
Max. current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan Fan(drive) oNo.
Fan motor output
Airflow
Defrost method
Sound pressure level
Dimensions
Weight
Refrigerant
Charge
Oil (Model)
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
Mode
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Service Ref. PUHZ-ZRP35VKA2
PUHZ-ZRP35VKA2-ER
PUHZ-ZRP35VKA2-ET
PUHZ-ZRP50VKA2
PUHZ-ZRP50VKA2-ER
PUHZ-ZRP50VKA2-ET
Cooling
13
SNB092FGCM
0.6
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
Inverter
—
Plate fin coil
Propeller fan o1
0.046
45 (1,590)
Reverse cycle
44
46
809 (31-13/16)
300 (11-3/16)
630 (24-13/16)
R410A
6.35 (1/4)
12.7 (1/2)
Flared
Flared
Maximum 30m
Maximum 50m
Heating Cooling
13
SNB130FGCM2
1.1
Heating
HP switch
Comp.shell thermo
Single, 50Hz, 230V
OUTDOOR UNIT
REFRIGERANT PIPING
43 (95)
2.2 (4.8)
0.35 (FV50S) 0.50 (FV50S)
46 (101)
2.4 (5.3)
A
kW
W
kW
K
/min (CFM )
dB
dB
mm (inch)
mm (inch)
mm (inch)
kg (lb)
kg (lb)
L
mm (inch)
mm (inch)
Power supply (phase, cycle, voltage)
Max. current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan Fan(drive) oNo.
Fan motor output
Airflow
Defrost method
Sound pressure level
Dimensions
Weight
Refrigerant
Charge
Oil (Model)
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
Mode
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Service Ref. PUHZ-ZRP71VHA2
PUHZ-ZRP71VHA2-ER
PUHZ-ZRP71VHA2-ET
PUHZ-ZRP60VHA2
PUHZ-ZRP60VHA2-ER
PUHZ-ZRP60VHA2-ET Cooling
Propeller fan o1
0.06
55 (1,940)
47
48
943 (37-1/8)
70 (154)
3.5 (7.7)
Maximum 50m
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
Inverter
—
Plate fin coil
Reverse cycle
950 (37-3/8)
330+30 (13+1-3/16)
R410A
9.52 (3/8)
15.88 (5/8)
Flared
Flared
Maximum 30m
HeatingCooling Heating
HP switch
Comp.shell thermo
Single, 50Hz, 230V
OUTDOOR UNIT
REFRIGERANT PIPING
1.31.2
19
SNB130FGCM1 SNB172FSHM1
0.65 (FV50S) 0.70 (FV50S)

8
OCH635A
5DATA
5-1. REFILLING REFRIGERANT CHARGE (R410A: kg)
Additional charge is required for pipes longer
than 30 m.
Service Ref. Piping length (one way) Initial
charged
10 m 20 m 30 m 40 m 50 m 60 m 75 m
PUHZ-ZRP35VKA2
PUHZ-ZRP35VKA2-ER
PUHZ-ZRP35VKA2-ET 1.8 2.0 2.2 2.4 2.6 — — 2.2
PUHZ-ZRP50VKA2
PUHZ-ZRP50VKA2-ER
PUHZ-ZRP50VKA2-ET 2.0 2.2 2.4 2.6 2.8 — — 2.4
PUHZ-ZRP60VHA2
PUHZ-ZRP60VHA2-ER
PUHZ-ZRP60VHA2-ET 3.1 3.3 3.5 4.1 4.7 — — 3.5
PUHZ-ZRP71VHA2
PUHZ-ZRP71VHA2-ER
PUHZ-ZRP71VHA2-ET 3.1 3.3 3.5 4.1 4.7 — — 3.5
5-2. COMPRESSOR TECHNICAL DATA (at 20:)
Service Ref. PUHZ-ZRP35VKA2 PUHZ-ZRP35VKA2-ER
PUHZ-ZRP35VKA2-ET
PUHZ-ZRP50VKA2
PUHZ-ZRP50VKA2-ER
PUHZ-ZRP50VKA2-ET
PUHZ-ZRP60VHA2
PUHZ-ZRP60VHA2-ER
PUHZ-ZRP60VHA2-ET
PUHZ-ZRP71VHA2
PUHZ-ZRP71VHA2-ER
PUHZ-ZRP71VHA2-ET
Compressor model SNB092FGCM SNB130FGCM2 SNB130FGCM1 SNB172FSHM1
Winding
Resistance
(Ω)
U-V 0.64 0.64 0.64 1.34
U-W 0.64 0.64 0.64 1.34
W-V 0.64 0.64 0.64 1.34

9
OCH635A
5-3. NOISE CRITERION CURVES
1.5 m
1 m
MICROPHONE
UNIT
GROUND
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUHZ-ZRP35VKA2 (-ER/-ET)
PUHZ-ZRP50VKA2 (-ER/-ET)
COOLING
MODE
HEATING
44
SPL(dB)
46
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
PUHZ-ZRP 60VHA 2(-ER/-ET)
PUHZ-ZRP
71VHA 2(-ER/-ET)
COOLING
MODE
HEATING
47
SPL(dB)
48
LINE

10
OCH635A
TotalElectrical circuitRefrigerant circuitIndoor side
Outdoor
side
Representative matching
SHF
BF
W
kW
Mode
Capacity
Input
PLA-ZP71EA
PLA-ZP71EA
Cooling
7,100
1.77
Heating
8,000
1.99
7.63
2.70
1.00
67
46
12
5
27
19
14.7
35
24
0.81
0.09
8.65
2.45
0.69
71
41
3
5
20
15
36.0
7
6
—
—
1 , 50
230
PUHZ-ZRP71VHA2
1 , 50
230
Phase , Hz
Voltage
Current
Outdoor unit
Phase , Hz
Voltage
Current
Discharge pressure
Suction pressure
Discharge temperature
Condensing temperature
Suction temperature
Ref. pipe length
Intake air temperature
Discharge air temperature
Intake air temperature
V
A
V
A
MPa
MPa
°C
°C
°C
m
°C
°C
°C
°C
°C
Indoor unit
D.B.
W.B.
D.B.
D.B.
W.B.
PLA-ZP35EA PLA-ZP50EA PLA-ZP60EA
PLA-ZP35EA PLA-ZP50EA PLA-ZP60EA
Cooling
3,600
0.79
Heating
4,100
0.86
Cooling
5,000
1.43
Heating
6,000
1.57
Cooling
6,100
1.78
Heating
7,000
2.04
3.58
2.58
1.08
62
44
15
5
27
19
17.4
35
24
0.92
0.24
3.97
2.04
0.70
58
34
4
5
20
15
31.0
7
6
—
—-
6.23
2.67
1.00
63
44
11
5
27
19
16.0
35
24
0.83
0.18
6.90
2.43
0.68
68
39
0
5
20
15
35.3
7
6
—-
—
7.72
2.62
0.98
66
44
10
5
27
19
13.6
35
24
0.72
0.14
8.92
2.53
0.71
65
41
1
5
20
15
39.0
7
6
—
—
1 , 50
230
PUHZ-ZRP35VKA2
1 , 50
230
1 , 50
230
PUHZ-ZRP50VKA2
1 , 50
230
1 , 50
230
PUHZ-ZRP60VHA2
1 , 50
230
0.28 0.25 0.30 0.27 0.30 0.27 0.45 0.41
5-4. STANDARD OPERATION DATA
The unit of pressure has been changed to MPa based on international SI system.
The conversion factor is : 1(MPa)=10.2(kgf/cm²)

11
OCH635A
6OUTLINES AND DIMENSIONS
Free space around the outdoor unit (basic example)
100mm or more as long as no obstacle is placed on the rear and right-and-left sides of the unit
2 sides should be open in the right, left and rear side.
Please secure the unit firmly with 4 foundation (M10) bolts. (Bolts, washers and nut must be purchased locally).
FOUNDATION BOLTS
Piping and wiring connection can be made from the rear direction only.
PIPING-WIRING DIRECTION
500mm or more 100mm or more100mm or more
Basically open
350mm or more
Service port Connection for
gas pipe FLARE [12.7 (1/2F)
Connection for liquid pipe FLARE [6.35 (1/4F)
Service panel for charge plug
Service panel Earth terminal
( )
Terminal connection Left・・・Power supply wiring Right・・・Indoor/Outdoor wiring
23.2
99.5
164.5 492
193.5
35°
43°
Air discharge
Air intake
Air intake
oval hole
2-10×21
drain hole
[42
360
330
32.5 300
40
404.5
48
Handle for moving
Installation bolt pitch
22.3
630
320
8.5
809 500
310
154.5
62
FOUNDATION
18
<Foundation bolt height>
Less than
2-U Shaped notched holes (Foundation Bolt M10)
(Foundation Bolt M10)
PUHZ-ZRP35VKA2 PUHZ-ZRP50VKA2
PUHZ-ZRP35VKA2-ER PUHZ-ZRP50VKA2-ER
PUHZ-ZRP35VKA2-ET PUHZ-ZRP50VKA2-ET
Unit: mm (inch)

12
OCH635A
PUHZ-ZRP60VHA2 PUHZ-ZRP71VHA2
PUHZ-ZRP60VHA2-ER PUHZ-ZRP71VHA2-ER
PUHZ-ZRP60VHA2-ET PUHZ-ZRP71VHA2-ET
Distance to
terminal block
T01 669
A
673
T02
FREE
Over 10mm Over 10mm
Over 500mm Over 100mm
Earth terminal
Service panel
Handle for moving
Handle
for moving
1
2
*1 447
*1 431
A
23 473 943
322 950
Installation Feet
2-U Shaped notched holes
(Foundfation Bolt M10)
Side Air Intake
Rear Air Intake
Air Discharge
2-12×36 oval holes
(Foundation Bolt M10)
1937028
40
5453
417
4157
175600175
33029
71
71
21981
30 220 145 145 145
Side Air Intake
Handle for moving
Rear Air Intake
Air Intake
Handle
for moving
Front piping cover
Rear piping cover
2 1
...Refrigerant GAS pipe connection (FLARE) ø15.88 (5/8F) ...Refrigerant LIQUID pipe connection (FLARE) ø9.52 (3/8F) *1 ... Indication of STOP VALVE connection location.
Example of Notes
Bottom piping hole (Knockout)
Drain hole
(5- ø33)
Terminal Connections
Left ... Power supply wiring Right ... Indoor/Outdoor wiring
637323
5527
92
65
45 40
45
65
92
40
6323 73
5527
19 55
23 27 92
92
4075
73 63
Piping Knockout Hole Details
Less than
<Foundation bolt height>
30
Over
Over
Service space
10
Over
500
500 100
Over
Dimensions of space needed
for service access are
shown in the below diagram.
Please secure the unit firmly
with 4 foundation (M10) bolts.
(Bolts and washers must be purchased locally.)
Piping and wiring connections
can be made from 4 directions:
FRONT,Right,Rear and Below.
4 PIPING-WIRING DIRECTIONS
3 FOUNDATION BOLTS2 SERVICE SPACE
1 FREE SPACE (Around the unit)
The diagram below shows a basic example. Explanation of particular details are given in the installation manuals etc.
FOUNDATION
Power supply wiring hole (2- ø27Knockout)
Rear trunking hole (Knockout)
Rear piping hole (Knockout)
ø92
Power supply wiring hole (2- ø27Knockout)
Front trunking hole (Knockout)
Front piping hole (Knockout)
ø92
Right piping hole (Knockout) Right trunking hole
(Knockout)
Power supply wiring hole (2- ø27Knockout)
ø92
Unit: mm (inch)

13
OCH635A
7WIRING DIAGRAM
PUHZ-ZRP35VKA2 PUHZ-ZRP50VKA2
PUHZ-ZRP35VKA2-ER PUHZ-ZRP50VKA2-ER
PUHZ-ZRP35VKA2-ET PUHZ-ZRP50VKA2-ET

14
OCH635A
PUHZ-ZRP60VHA2 PUHZ-ZRP71VHA2
PUHZ-ZRP60VHA2-ER PUHZ-ZRP71VHA2-ER
PUHZ-ZRP60VHA2-ET PUHZ-ZRP71VHA2-ET

Outdoor unit model ZRP35/50V ZRP60/71V
Outdoor unit power supply ~/N (single), 50 Hz, 230 V ~/N (single), 50 Hz, 230 V
Outdoor unit input capacity main switch (Breaker) *1 16 A 25 A
Wiring
Wire No. ×
size (mm²)
Outdoor unit power supply 3 × Min. 1.5 3 × Min. 2.5
Indoor unit-Outdoor unit *2 3 × 1.5 (Polar) 3 × 1.5 (Polar)
Indoor unit-Outdoor unit earth *2 1 × Min. 1.5 1 × Min. 1.5
Remote controller-Indoor unit *3 2 × 0.3 (Non-polar) 2 × 0.3 (Non-polar)
Circuit rating
Outdoor unit L-N (single)
Outdoor unit L1-N, L2-N, L3-N (3 phase)
*4 230 V AC 230 V AC
Indoor unit-Outdoor unit S1-S2 *4 230 V AC 230 V AC
Indoor unit-Outdoor unit S2-S3 *4 24 V DC 24 V DC
Remote controller-Indoor unit *4 12 V DC 12 V DC
*1.A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).
Make sure that the current leakage breaker is one compatible with higher harmonics.
Always use a current leakage breaker that is compatible with higher harmonics as this unit is equipped with an inverter.
The use of an inadequate breaker can cause the incorrect operation of inverter.
*2.(ZRP35–71)
Max. 45 m
If 2.5 mm² used, Max. 50 m
If 2.5 mm² used and S3 separated, Max. 80 m
Max. 80 m Total Max. including all indoor/indoor connection is 80 m.
• Use one cable for S1 and S2 and another for S3 as shown in the picture.
• Max. 50 m Total Max. for PEA. Wiring size 3 × 1.5 (Polar).
*3.The 10 m wire is attached in the remote controller accessory.
*4. The gures are NOT always against the ground.
S3 terminal has 24 V DC against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulated by the transformer or other device.
Caution: Be sure to install N-Line. Without N-Line, it could cause damage to the unit.
15
OCH635A
8WIRING SPECIFICATIONS
8-1. FIELD ELECTRICAL WIRING (power wiring specifications)
1
2
S1
S2
S3
S1
S2
S3
Indoor/outdoor
unit connection
cable
Indoor
unit
Unit
power
supply
Outdoor
unit
Remote
controller
L
BN
BEarth leakage breaker
Cwiring circuit breaker or
isolating switch
CB
BEarth leakage breaker
Cwiring circuit breaker or
isolating switch
CL
N1 21 2
S1
Indoor
unit
S2
S3
S1
S2
S3
S1
S2
S3
Unit
power
supply Indoor/outdoor
unit connection
cable
Indoor
unit
Outdoor
unit
Remote
controller
B
BEarth leakage breaker
Cwiring circuit breaker or
isolating switch
C1
21
21
2
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
Indoor/outdoor
connection cable
Indoor
unit
Unit
power
supply
Indoor
unit
Indoor
unit
Outdoor
unit
Remote
controller
L
N
1:1 system Electrical wiring Synchronized twin and triple system Electrical wiring
• Synchronized twin
• Synchronized triple
Notes: 1. Wiring size must comply with the applicable local and national code..
2. Power supply cables and Indoor/Outdoor unit connecting cables shall not be lighter than polychloroprene sheathed flexible cable.
3. Install an earth longer than other cables.
Warning:
In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between
power line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals
when the power is energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type.
(Design 60245 IEC 57)
S1
S2
S3
S1
S2
S3
A-Control
Outdoor Unit
3 poles isolator
Power supply
Isolator
A-Control
Indoor Unit
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a re or communication failure.

16
OCH635A
8-2. SEPARATE INDOOR UNIT/ OUTDOOR UNIT POWER SUPPLIES
The following illustration show available connection patterns.
The outdoor unit power supply patterns vary on models.
1:1 System
<For models without heater>
The optional indoor power supply terminal kit is required.
S1
S2
L
N
1
2
L
N
S1
S2
S3
S3
ACB
D
J
E
BC
F
G
H
Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
AOutdoor unit power supply
BEarth leakage breaker
CWiring circuit breaker or isolating switch
DOutdoor unit
EIndoor unit/outdoor unit connecting cable
FRemote controller
GIndoor unit
HOption
JIndoor unit power supply
Simultaneous twin/triple system
Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
<For models without heater>
The optional indoor power supply terminal kit is required. A
B
C
D
E
F
G
H
J
Outdoor unit power supply
Earth leakage breaker
Wiring circuit breaker or isolating switch
Outdoor unit
Indoor unit/outdoor unit connecting cable
Remote controller
Indoor unit
Option
Indoor unit power supply
KIndoor unit earth
If the indoor and outdoor units have separate power supplies, refer to the table below.
If the optional indoor power supply terminal kit is used, change the indoor unit
electrical box wiring referring to the figure in the right and the DIP switch settings of
the outdoor unit control board.
Indoor power supply terminal kit (option)
Indoor unit electrical box connector con-
nection change
Label affixed near each wiring diagram
for the indoor and outdoor units
Outdoor unit DIP switch settings (when
using separate indoor unit/outdoor unit
power supplies only)
Indoor unit specifications
Required
Required
Required
Connectors (connections when shipped
from the factory are for indoor unit power
supplied from outdoor unit)
Indoor unit power supplied from outdoor unit
(when shipped from factory)
If the indoor and
outdoor units have
separate power
supplies, change the
connections of the
connectors as shown
in the following
figure.
Connectors
Indoor unit
control board
Separate indoor unit/outdoor unit power
supplies
S1
S2
S3
L
N
BLUE BLUE
YELLOW YELLOW
CND
CN01
ORANGE
CN01
ORANGE
S1
S2
S3
L
N
YELLOW
BLUE BLUE
YELLOW
CND
Indoor unit
control board
Note: There are 3 types of label; A, B, and C. Affix the appropriate labels to
the units according to the wiring method.
ON
OFF
Set the SW8-3 to ON.
1 2 (SW8)
3
E
F
D G
K K
H
G
H
G
H
L
N
L
N
S1
S2
S3
S1
S2
S3
1
2
L
N
S1
S2
S3
1
2
L
N
S1
S2
S3
1
2
AB C B C
J
*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).
The breaker shall be provided to ensure disconnection of all active phase conductor of the supply.
*2. Maximum 120 m
*3.The 10 m wire is attached in the remote controller accessory. Maximum 500 m
*4.The figures are NOT always against the ground.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Power supply cables and indoor unit/outdoor unit connecting cables shall not be lighter than polychloroprene sheathed
flexible cable. (Design 60245 IEC 57)
3. Install an earth line longer than power cables.
Indoor unit model
Indoor unit power supply
Indoor unit input capacity *1
Main switch (Breaker)
Indoor unit power supply
Indoor unit power supply earth
Indoor unit-Outdoor unit *2
Indoor unit-Outdoor unit earth
Remote controller-Indoor unit *3
Indoor unit L-N *4
Indoor unit-Outdoor unit S1-S2 *4
Indoor unit-Outdoor unit S2-S3 *4
Remote controller-Indoor unit *4
RP35–71
~/N (single), 50 Hz, 230 V
16 A
3oMin. 1.5
1oMin. 1.5
2oMin. 0.3
–
2 o0.3 (Non-polar)
230 V AC
–
24 V DC
12 V DC
Circuit
rating
Wiring
Wire No. osize
(mm
2
)

17
OCH635A
8-3. INDOOR – OUTDOOR CONNECTING CABLE
The cable shall not be lighter than design 60245 IEC or 60227 IEC.
Note: The Max. cable length may vary depending on the condition of installation, humidity or materials, etc.
Indoor unit-Outdoor unit
Outdoor power supply Max. 45 m
3 o1.5 (polar)
1 oMin. 1.5
Max. 50 m
3 o2.5 (polar)
1 oMin. 2.5
Max. 80 m
3 o2.5 (polar) and S3 separated
1 oMin. 2.5
Indoor unit-Outdoor unit earth
Wire No. oSize (mm²)
Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections).
Intermediate connections can lead to communication errors if water enters the cables and causes insufficient
insulation to ground or a poor electrical contact at the intermediate connection point.
Indoor unit-Outdoor unit
Indoor/Outdoor separate
power supply Max. 120 m
2 oMin. 0.3
—
Indoor unit-Outdoor unit earth
Wire No. oSize (mm²)
Note: The optional indoor power supply terminal kit is necessary

18
OCH635A
8-4. M-NET WIRING METHOD
Points to note:
(1) Outside the unit, transmission wires should stay away from electric wires in order to prevent electromagnetic noise from
making an influence on the signal communication. Place them at intervals of more than 5 cm. Do not put them in the same
conduit tube.
(2) Terminal block (TB7) for transmission wires should never be connected to 220–240 V power supply. If it is connected,
electronic parts on M-NET P.C. board may burn out.
(3) Use 2-core × 1.25mm² shield wire (CVVS, CPEVS) for the transmission wire. Transmission signals may not be sent or
received normally if different types of transmission wires are put together in the same multi-conductor cable. Never do this
because this may cause a malfunction.
It is acceptable if M-NET wire (non-polar, 2-cores) is arranged in addition to the wiring for A-control.
(4) Earth only one of any appliances through M-NET transmission wire (shield wire). Communication error may occur due to
the influence of electromagnetic noise.
“Ed” error will appear on the LED display of outdoor unit.
“0403” error will appear on the central-control remote controller.
If there are more than 2 earthing spots on the shield wire, noise may enter into the shield wire because the earth wire and
shield wire form 1 circuit and the electric potential difference occurs due to the impedance difference among earthing spots.
In case of single spot earthing, noise does not enter into the shield wire because the earth wire and shield wire do not form
1 circuit.
To avoid communication errors caused by noise, make sure to observe the single spot earthing method described in the
installation manual.
Centralized
controller Refrigerant
address 00
M-NET
address 01
A-control
remote
controller
A-control
remote
controller A-control
remote
controller
Refrigerant
address 00
M-NET
address 02
Refrigerant
address 00
M-NET
address 03
Power
supply unit
Centralized
controller
M-NET transmission wire
O Bad example (Multi spot earthing of shield wire)
Good example 1 (Single spot earthing of shield wire)
Power
supply unit
M-NET type
outdoor unit
M-NET type
outdoor unit
M-NET type
outdoor unit M-NET type outdoor unit
M-NET transmission wire
M-NET type
outdoor unit M-NET type outdoor unit
M-NET type
outdoor unit
M-NET transmission wire
M-NET type
outdoor unit M-NET type outdoor unit
Good example 2 (Single spot earthing of shield wire)
Centralized
controller
Centralized
controller
Power
supply unit
Power
supply unit

19
OCH635A
8-4-3. Regulations in address settings
In the case of multiple grouping system, M-NET and refrigerant address settings should be done as explained in the above
section. Set the lowest number in the group for the outdoor unit whose refrigerant address is “00” as its M-NET address.
* Refrigerant addresses can be overlapped if they are in the different group.
In group B, M-NET address of the outdoor unit whose refrigerant address is “00” is not set to the minimum in the group.
As “3” is right for this situation, the setting is wrong. Taking group A as a good sample, set the minimum M-NET address in
the group for the outdoor unit whose refrigerant address is “00”.
8-4-1. M-NET address setting
In A-control models, M-NET address and refrigerant address should be set only for the outdoor unit. Similar to CITY MULTI
system, there is no need to set the address of outdoor unit and remote controller. To construct a central control system, the
setting of M-NET address should be conducted only upon the outdoor unit. The setting range should be 1 to 50 (the same as
that of the indoor unit in CITY MULTI system), and the address number should be consecutively set in a same group.
Address number can be set by using rotary switches
(SW11 for 1s digit and SW12 for 10s digit), which
is located on the M-NET board of outdoor unit.
(Initial setting: all addresses are set to “0”.)
8-4-2. Refrigerant address setting
In the case of multiple grouping system (multiple refrigerant circuits in 1 group), indoor units should be connected by remote
controller wiring (TB5) and the refrigerant address needs to be set. Leave the refrigerant addresses to “00” if the group set-
ting is not conducted. Set the refrigerant address by using DIP SW1-3 to -6 on the outdoor controller board. [Initial setting: all
switches are OFF. (All refrigerant addresses are “00”.)]
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1 2
~
50
M-NETAddress No. <Setting example>
Switch
setting
SW11
1s
digit
SW12
10s
digit
OFF
ON
123456123456123456123456123456123456123456123456
123456 123456 123456 123456 123456 123456 123456 123456
0
Refrigerant
address
OFF
ON
8
OFF
ON
1
OFF
ON
9
OFF
ON
10
OFF
ON
11
OFF
ON
12
OFF
ON
13
OFF
ON
14
OFF
ON
15
OFF
ON
2
OFF
ON
3
OFF
ON
4
OFF
ON
5
OFF
ON
6
OFF
ON
7
A-control
remote
controller
Group A Group B Group C
A-control
remote
controller
TB5
A-control
remote
controller
Refrigerant
address 00
M-NET
address 01
Refrigerant
address 00
M-NET
address 02
Refrigerant
address 01
M-NET
address 03
Refrigerant
address 00
M-NET
address 04
Power
supply unit
Centralized
controller
Power
supply unit
A-control
remote
controller
A-control
remote
controller
TB5
Group A Group B
Refrigerant
address 00
M-NET
address 01
Refrigerant
address 01
M-NET
address 02
Refrigerant
address 00
M-NET
address 04
Refrigerant
address 01
M-NET
address 03
Refrigerant
address 02
M-NET
address 05
Centralized
controller
M-NET wiring
(1) Use 2-core × 1.25mm² shield wire for electric wires.
(Excluding the case connecting to system controller.)
(2) Connect the wire to the M-NET terminal block. Connect one core of the transmission
wire (non-polar) to A terminal and the other to B. Peel the shield wire, twist the shield
part to a string and connect it to S terminal.
(3) In the system which several outdoor units are being connected, the terminal (A, B,
S) on M-NET terminal block should be individually wired to the other outdoor unit’s
terminal, i.e. A to A, B to B and S to S. In this case, choose one of those outdoor units and drive a screw to fix an earth
wire on the plate as shown on the right figure.
Transmission
wire Shield part
M-NET
terminal
block Earth
wire
A B S

20
OCH635A
9REFRIGERANT SYSTEM DIAGRAM
Unit: mm (inch)
Refrigerant flow in cooling
Refrigerant flow in heating
Thermistor TH7
(Outdoor)
Heat exchanger
Refrigerant GAS pipe
connection(1/2F)
Refrigerant LIQUID pipe
connection(1/4F)
Stop valve
Strainer
#100
Strainer
#100
Power
receiver
Linear
expansion valve B
Thermistor TH6
(Outdoor 2-phase pipe)
Thermistor TH3
(Outdoor pipe)
Charge plug
High pressure
switch 63H
Thermistor TH4
(Discharge)
Thermistor TH33
(Comp. surface)
Compressor
Strainer
#50
Solenoid valve
(Four-way valve)
Muffler Distributor
Linear expansion valve A Strainer
#100
Muffler
Stop valve
(with service port)
Distributor
Thermistor TH7
(Outdoor)
Heat exchanger
Refrigerant LIQUID pipe
connection [9.52(3/8)
Stop valve
(with service port)
Strainer
#100
Power
receiver
Linear
expansion valve B
Linear expansion valve A
Strainer
#100
Thermistor TH6
(Outdoor 2-phase pipe)
Thermistor TH3
(Outdoor pipe)
High pressure
switch 63H
Thermistor TH4
(Discharge)
Thermistor TH33
(Comp. surface)
Compressor
Strainer
#50
Strainer
#100
Strainer
#100
4-way valve
Muffler
Charge plug
(Low pressure)
Charge plug
(High pressure)
Stop valve
(with service port)
Refrigerant GAS pipe
connection [15.88(5/8)
Refrigerant flow in cooling
Refrigerant flow in heating
PUHZ-ZRP35VKA2 PUHZ-ZRP50VKA2
PUHZ-ZRP35VKA2-ER PUHZ-ZRP50VKA2-ER
PUHZ-ZRP35VKA2-ET PUHZ-ZRP50VKA2-ET
PUHZ-ZRP60VHA2 PUHZ-ZRP71VHA2
PUHZ-ZRP60VHA2-ER PUHZ-ZRP71VHA2-ER
PUHZ-ZRP60VHA2-ET PUHZ-ZRP71VHA2-ET