Mitsubishi Electric Mr.Slim PUHZ-P100VHA2 User manual

SERVICE MANUAL
No.OCH415
REVISED EDITION-C
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
R410A
July 2009
PUHZ-P100VHA2.UK
PUHZ-P100VHA3.UK
CONTENTS
1. TECHNICAL CHANGES.................................2
2. REFERENCE MANUAL.................................. 2
3. SAFETY PRECAUTION..................................3
4. FEATURES...................................................... 6
5. SPECIFICATIONS...........................................7
6. DATA...............................................................8
7. OUTLINES AND DIMENSIONS....................11
8. WIRING DIAGRAM.......................................15
9. WIRING SPECIFICATIONS..........................16
10. REFRIGERANT SYSTEM DIAGRAM............... 21
11. TROUBLESHOOTING................................... 23
12. FUNCTION SETTING....................................73
13. EASY MAINTENANCE FUNCTION..............80
14. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER
...........83
15. DISASSEMBLY PROCEDURE..................... 93
PARTS CATALOG (OCB415)
Outdoor unit
[model names]
PUHZ-P100VHA2
PUHZ-P125VHA2
PUHZ-P140VHA2
PUHZ-P100VHA3
PUHZ-P125VHA3
PUHZ-P140VHA3
[Service Ref.]
PUHZ-P100VHA2.UK
PUHZ-P125VHA2.UK
PUHZ-P125VHA21.UK
PUHZ-P140VHA2.UK
PUHZ-P140VHA21.UK
PUHZ-P100VHA3.UK
PUHZ-P100VHA3R1.UK
PUHZ-P125VHA3.UK
PUHZ-P125VHA3R1.UK
PUHZ-P140VHA3.UK
PUHZ-P140VHA3R1.UK
Note:
•RoHS compliant products
have <G> mark on the
spec name plate.
Revision:
• PUHZ-P100/125/140
VHA3R1.UK are added in
REVISED EDITION-C.
• Some descriptions have
been modified.
• Please void OCH415
REVISED EDITION-B.

2
2REFERENCE MANUAL
Model name Service Ref.
Service
Manual No.
PLA-RP50/60/71/100/125/140BA
PLA-RP140BA2 PLA-RP50/60/71/100/125/140BA(#2).UK PLA-RP50/60/71BA1.UK
PLA-RP140BA2R1.UK OCH412
OCB412
PCA-RP71/125HA OC329 PCA-RP71/125HA(#1)
PCA-RP50/60/71/100/125/140GA PCA-RP50/60/71/100/125/140GA(#1) OC328
PCA-RP50GA2 PCA-RP50GA2(#1)
PKA-RP50GAL PKA-RP50GAL(#1) OC330
PKA-RP60/71/100FAL PKA-RP60/71/100FAL(#1)
PKA-RP50FAL2 PKA-RP50FAL2(#1) OC331
PEAD-RP60/71/100GA PEAD-RP60/71/100GA(#1).UK HWE0506
PEAD-RP50/60/71/125/140EA
PEAD-RP100EA2 PEAD-RP50/60/71/125/140EA(#1).UK PEAD-RP100EA2(#1).UK HWE0521
PKA-RP60/71/100KAL PKA-RP60/71/100KAL.TH OCH452
OCB452
PKA-RP35/50HAL PKA-RP35/50HAL
PCA-RP50/60/71/100/125/140KA PCA-RP50/60/71/100/125/140KA OCH454
OCB454
OCH453
OCB453
PEAD-RP35/50/60/71/100/125/140JA(L) PEAD-RP35/50/60/71/100/125/140JA(L).UK HWE08130
BWE08240
INDOOR UNIT’S SERVICE MANUAL
PUHZ-P125VHA2.UK PUHZ-P125VHA21.UK
PUHZ-P140VHA2.UK PUHZ-P140VHA21.UK
4-WAY VALVE and COIL (21S4) have been changed.
1TECHNICAL CHANGES
PUHZ-P100VHA2.UK PUHZ-P100VHA3.UK
PUHZ-P125VHA21.UK PUHZ-P125VHA3.UK
PUHZ-P140VHA21.UK PUHZ-P140VHA3.UK
OUTDOOR CONTROLLER BOARD (C.B) has been changed.
(Corresponding to the additional combination between PKA-RP•HAL/KAL, PCA-RP•KA and PEAD-RP•JA(L))
* In case of UL error, the compressor may be damaged if the unit is restarted by remote controller.
To avoid the damage, unit has the system that is not able to be restarted unless the power is turned OFF once.
PUHZ-P100VHA3.UK PUHZ-P100VHA3R1.UK
PUHZ-P125VHA3.UK PUHZ-P125VHA3R1.UK
PUHZ-P140VHA3.UK PUHZ-P140VHA3R1.UK
• Fan grille has been changed.
• Structural parts have been changed. (Munsell 5Y 7/1 →3Y 7.8/1.1)

3
3SAFETY PRECAUTION
Cautions for units utilizing refrigerant R410A
3-1. CAUTIONS RELATED TO NEW REFRIGERANT
Use new refrigerant pipes.
Make sure that the inside and outside of refrige-
rant piping is clean and it has no contamination
such as sulfur hazardous for use, oxides, dirt,
shaving particles, etc.
In addition, use pipes with specified thickness.
Store the piping to be used indoors during
installation and both ends of the piping sealed
until just before brazing. (Leave elbow joints, etc.
in their packaging.)
Use ester oil, ether oil or alkylbenzene oil (small
amount) as the refrigerant oil applied to flares
and flange connections.
In case of using the existing pipes for R22, be careful with
the followings.
· 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.
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.
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.
Use the following tools specifically designed for
use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
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.
Flare tool
Electronic refrigerant
charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R410A
Contamination inside refrigerant piping can cause deterio-
ration of refrigerant oil etc.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
If large amount of mineral oil enters, that can cause deterio-
ration of refrigerant oil etc.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
[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
· Check that cylinder for R410A on the market is syphon type.
· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

4
Gravimeter
Unit
[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
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 time 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 0.7mm 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 intensity, flare cutting dimension of copper pipe for R410A have been speci-
fied separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A also
have partly been changed to increase intensity as shown below. Set copper pipe correctly referring to copper pipe flaring
dimensions for R410A below. For 1/2 and 5/8 inch, 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 Dimension A ( )
+0
-0.4
(mm)
R410A R22 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 Dimension B (mm)
R410A
+
+36.0mm for
indoor unit
of RP100,
125 and 140
R22
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 adop-
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 adopter for rever-
se flow)
(Usable by adjusting
flaring dimension)
Can R407C tools be used?
Ester oil:
Alkylbenzene oil: minimum amount
(Usable if equipped
with adopter 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
4 FEATURES
CHARGELESS SYSTEM
PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT.
(Max.30m (PUHZ-P125/P140))
The refrigerant circuit with LEV (Linear Expansion Valve) and Accumulator always control the optimal refrigerant
level regardless of the length (30m max. and 5m min.) of piping. The additional refrigerant charging work during
installation often causes problems. Heretofore it is completely eliminated. This unique system improves the quality
and reliability of the work done. It also helps to speed up the installation time.
PUHZ-P100VHA2.UK
PUHZ-P100VHA3.UK
PUHZ-P125VHA2.UK
PUHZ-P140VHA2.UK
PUHZ-P125VHA21.UK
PUHZ-P140VHA21.UK
PUHZ-P125VHA3.UK
PUHZ-P140VHA3.UK
PUHZ-P100VHA3R1.UK PUHZ-P125VHA3R1.UK
PUHZ-P140VHA3R1.UK

7
5 SPECIFICATIONS
A
A
kW
W
kW
*
/min(CFM )
dB
dB
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kg(lbs)
L
mm(in.)
mm(in.)
Power supply (phase, cycle, voltage)
Running current
Max. current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan Fan(drive) %No.
Fan motor output
Airflow
Defrost method
Noise 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-P100VHA2.UK
PUHZ-P100VHA3.UK
PUHZ-P100VHA3R1.UK
Cooling
12.26
Munsell 5Y 7/1 / Munsell 3Y 7.8/1.1 (VHA3R1)
Linear Expansion Valve
Hermetic
TNB220FLHMT
2.9
Inverter
—
Plate fin coil
Propeller fan %1
0.060
60(2120)
Reverse cycle
50
54
950(37-3/8)
330+30(13+1-3/16)
943(37-1/8)
75(165)
R410A
3.0(6.6)
0.87(FV50S)
9.52(3/8)
15.88(5/8)
Flared
Flared
Max. 30m
Max. 50m
Heating
12.62
HP switch
Discharge thermo
Single, 50Hz, 230V
OUTDOOR UNIT
REFRIGERANT PIPING
28
A
A
kW
W
kW
*
/min(CFM )
dB
dB
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kg(lbs)
L
mm(in.)
mm(in.)
Power supply (phase, cycle, voltage)
Running current
Max. current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan Fan(drive) %No.
Fan motor output
Airflow
Defrost method
Noise 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-P140VHA2.UK
PUHZ-P140VHA21.UK
PUHZ-P140VHA3.UK
PUHZ-P140VHA3R1.UK
PUHZ-P125VHA2.UK
PUHZ-P125VHA21.UK
PUHZ-P125VHA3.UK
PUHZ-P125VHA3R1.UK
Cooling
17.37
Munsell 5Y 7/1 / Munsell 3Y 7.8/1.1 (VHA3R1)
Linear Expansion Valve
Hermetic
TNB306FPGM
Inverter
30
Plate fin coil
Propeller fan %2
0.060+0.060
100(3,530)
Reverse cycle
950(37-3/8)
330+30(13+1-3/16)
1,350(53-1/8)
99(218)
R410A
4.5(9.9)
0.87(FV50S)
9.52(3/8)
15.88(5/8)
Flared
Flared
Max. 30m
Max. 50m
Heating
16.74
Cooling
22.48 29.5
3.9
Heating
21.31
HP switch
Discharge thermo
Single 50Hz, 230V
OUTDOOR UNIT
REFRIGERANT PIPING
3.4
28
52
56
51
55

8
6 DATA
6-1. REFILLING REFRIGERANT CHARGE (R410A : kg)
6-2. COMPRESSOR TECHNICAL DATA
Piping length (one way)
10m 20m 30m 40m 50m Initial
charged
2.9
4.3
4.3
3.0
4.4
4.4
3.6
4.5
4.5
4.2
5.1
5.1
4.8
5.7
5.7
3.0
4.5
4.5
Service Ref.
PUHZ-P100VHA2.UK
PUHZ-P100VHA3.UK
PUHZ-P100VHA3R1.UK
PUHZ-P125VHA2.UK
PUHZ-P125VHA21.UK
PUHZ-P125VHA3.UK
PUHZ-P125VHA3R1.UK
PUHZ-P140VHA2.UK
PUHZ-P140VHA21.UK
PUHZ-P140VHA3.UK
PUHZ-P140VHA3R1.UK
U-V
U-W
W-V
Unit
Compressor model
Winding
Resistance
()
TNB306FPGM
(at 20˚C)
0.53
0.53
0.53
PUHZ-P125,140VHA2.UK
PUHZ-P125,140VHA21.UK
PUHZ-P125,140VHA3.UK
PUHZ-P125,140VHA3R1.UK
TNB220FLHMT
0.88
0.88
0.88
PUHZ-P100VHA2.UK
PUHZ-P100VHA3.UK
PUHZ-P100VHA3R1.UK
Longer pipe than 20 or 30m, additional
charge is required.

9
6-3. NOISE CRITERION CURVES
1.5m
1m
MICROPHONE
UNIT
GROUND
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-P100VHA2.UK
PUHZ-P100VHA3.UK
PUHZ-P100VHA3R1.UK
COOLING
MODE
HEATING
50
SPL(dB)
54
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUHZ-P125VHA2.UK
PUHZ-P125VHA21.UK
PUHZ-P125VHA3.UK
PUHZ-P125VHA3R1.UK
COOLING
MODE
HEATING
51
SPL(dB)
55
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUHZ-P140VHA2.UK
PUHZ-P140VHA21.UK
PUHZ-P140VHA3.UK
PUHZ-P140VHA3R1.UK
COOLING
MODE
HEATING
52
SPL(dB)
56
LINE

10
6-4. 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)
TotalElectrical circuitRefrigerant circuitIndoor side
Outdoor
side
Representative matching
SHF
BF
W
kW
Mode
Capacity
Input
Phase , Hz
Volts
Input
Amperes
Outdoor unit
Phase , Hz
Volts
Current
Discharge pressure
Suction pressure
Discharge temperature
Condensing temperature
Suction temperature
Ref. pipe length
Intake air temperature
Discharge air temperature
Intake air temperature
V
kW
A
V
A
MPa
(.f/%)
MPa
(.f/%)
°C
°C
°C
m
°C
°C
°C
°C
°C
Indoor unit
D.B.
W.B.
D.B.
D.B.
W.B.
PLA-RP100BA PLA-RP125BA PLA-RP140BA(2)
PLA-RP100BA PLA-RP125BA PLA-RP140BA(2)
Cooling
9,400
3.12
Heating
11,200
3.28
Cooling
12,300
4.09
Heating
14,000
4.11
Cooling
13,600
5.21
Heating
16,000
4.98
12.26
2.90
(29.6)
0.92
(9.4)
72.7
48.6
10.1
5
27
19
14.8
35
24
0.74
0.21
12.62
2.57
(26.2)
0.62
(6.3)
75.5
41.4
0.1
5
20
15
43.4
7
6
—
—
17.37
2.68
(27.3)
0.86
(8.8)
67.8
45.5
6.8
5
27
19
13.6
35
24
0.71
0.18
16.74
2.56
(26.1)
0.68
(6.9)
64.5
43.4
1.3
5
20
15
44.2
7
6
—
—
22.48
2.79
(28.5)
0.79
(8.1)
72.7
47.0
4.4
5
27
19
12.9
35
24
0.71
0.14
21.31
2.75
(28.1)
0.64
(6.5)
70.8
47.2
1.0
5
20
15
48.0
7
6
—
—
1 , 50
230
1 , 50
230
1 , 50
230
1 , 50
230
1 , 50
230
1 , 50
230
PUHZ-P100VHA2
PUHZ-P100VHA3 PUHZ-P125VHA2 PUHZ-P125VHA3 PUHZ-P140VHA2 PUHZ-P140VHA3
0.14
0.94
0.13
0.87
0.15
1.00
0.14
0.94
0.16
1.07
0.15
1.00

11
7 OUTLINES AND DIMENSIONS
417
66 42
45
56
(19)37028
53
175600175
330
2-12%36 oval holes
(Foundation Bolt M10)
Air Discharge
Rear Air Intake
Side Air Intake
2-U Shaped notched holes (Foundfation Bolt M10)
Installation Feet
30
Over
Over
Less than
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)
Piping Knockout Hole Details
Example of Notes
···Refrigerant GAS pipe connction (FLARE)W15.88(5/8 inch) ···Refrigerant LIQUID pipe connection (FLARE)W9.52(3/8 inch)
+1 ···Indication of STOP VALVE connection location.
The diagram below shows a basic example. Explantion of particular details is given in the installation manuals etc.
Over10
500
500
Over100
Dimensions of space needed for service access are shown in the below diagram.
Service space
30
Please secure the unit firmly with 4 foundation (M10) bolts. (Bolts and washers must be purchased locally.)
<Foundation bolt height>
Handle for moving
Side Air Intake
Front piping cover
Rear piping cover
14522030 145
81 219
145
71
71
Drain hole (5-W33)
Bottom piping hole (Knockout)
Air Intake
Rear Air Intake
Handle for moving
Handle for moving
23
943
473
950
322
+1 447
+1 443
670
Terminal Connections
Left···Power supply wiring Reight···Indoor/Outdoor wiring
Earth terminal
Service panel Handle for moving
Handle for moving
1
2
19 55
23 27 92
92
40
75
73 63
Right piping hole (Knockout)
Right trunking hole (Knockout)
Power supply wiring hole (2-W27Knockout)
W
92
27 55
7323 63
40
92 65
45
Front piping hole (Knockout)
Front trunking hole (Knockout)
Power supply wiring hole (2-W27Knockout)
W
92
4045
65
92
27 55
23 73 63
Rear piping hole (Knockout)
Rear trunking hole (Knockout)
Power supply wiring hole (2-W27Knockout)
W92
FOUNDATION
Over 10mm
Over 10mm
Over 500mm Over 100mm
FREE
Unit : mm(inch)
OUTDOOR UNIT
PUHZ-P100VHA2.UK
PUHZ-P100VHA3.UK

12
Unit : mm(inch)
Less than
Over
Over Over
Over
Handle for moving
Side Air Intake
Front piping cover
Rear piping cover
Air intake
Rear Air Intake
Handle for moving
Handle for moving
Terminal connection
Left···Power supply wiring Right···Indoor/Outdoor wiring
Earth terminal
Service panel
Handle for moving
1
2
The diagram below shows a basic example. Explantion of particular details is given in the installation manuals etc.
Dimensions of space needed for service access are shown in the below diagram.
<Foundation bolt height>
Please secure the unit firmly with 4 foundation (M10) bolts. (Bolts and washers must be purchased locally.)
Air Discharge
Rear Air Intake
Side Air Intake
···Refrigerant GAS pipe connction (FLARE)W15.88(5/8 inch) ···Refrigerant LIQUID pipe connection (FLARE)W9.52(3/8 inch)
+1 ···Indication of STOP VALVE connection location.
Example of Notes
Piping Knockout Hole Details
1 FREE SPACE (Around the unit)
2 SERVICE SPACE
3 FOUNDATION BOLTS
4 PIPING-WIRING DIRECTIONS
Piping and wiring connections can be made from 4 directions: front, right, rear and below.
30
FOUNDATION
150
500
500
10
Service space
600175 175
330
417
42
66
53 56
45
(19)28 370
2-U Shaped notched holes (Foundation Bolt M10)
2-12 x 36 Oval holes (Foundation Bolt M10)
Installation Feet
30
45 40
65 92
27 55
23 73 63
Rear piping hole (Knockout)
Rear trunking hole (Knockout)
Power supply wiring hole (2-
W
27Knockout)
W
92
19 55
92
75 40
73 63
23 27 92
Right piping hole (Knockout) Right trunking hole
(Knockout)
Power supply wiring hole (2-
W
27Knockout)
W
92
92 65
4540
27 55
23 73 63
Front piping hole (Knockout)
Front trunking hole (Knockout)
Power supply wiring hole (2-
W
27Knockout)
W
92
14514522030 145
81 219
71
71
Bottom piping hole (Knockout)
Drain hole (5-W33)
1350
23
950
1076
+1 447
+1 443
371 635
322
Handle for moving
Over 10mm Over 10mm
Over 1000mm
Over 150mm
FREE
PUHZ-P125VHA2.UK
PUHZ-P140VHA2.UK
PUHZ-P125VHA21.UK
PUHZ-P140VHA21.UK
PUHZ-P125VHA3.UK
PUHZ-P140VHA3.UK

13
417
66 42
45
56
(19)37028
53
175600175
330
2-12%36 oval holes (Foundation Bolt M10)
Air Discharge
Rear Air Intake
Side Air Intake
2-U Shaped notched holes (Foundfation Bolt M10)
Installation Feet
30
Over
Over
Less than
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)
Piping Knockout Hole Details
Example of Notes
···Refrigerant GAS pipe connction (FLARE)W15.88(5/8 inch) ···Refrigerant LIQUID pipe connection (FLARE)W9.52(3/8 inch)
+1 ···Indication of STOP VALVE connection location.
The diagram below shows a basic example. Explantion of particular details is given in the installation manuals etc.
Over10
500
500
Over100
Dimensions of space needed for service access are shown in the below diagram.
Service space
30
Please secure the unit firmly with 4 foundation (M10) bolts. (Bolts and washers must be purchased locally.)
<Foundation bolt height>
Handle for moving
Side Air Intake
Front piping cover
Rear piping cover
14522030 145
81 219
145
71
71
Drain hole (5-W33)
Bottom piping hole (Knockout)
Air Intake
Rear Air Intake
Handle for moving
Handle for moving
23
943
473
950
322
+1 447
+1 443
670
Terminal Connections
Left···Power supply wiring Reight···Indoor/Outdoor wiring
Earth terminal
Service panel Handle for moving
Handle for moving
1
2
19 55
23 27 92
92
4075
73 63
Right piping hole (Knockout)
Right trunking hole (Knockout)
Power supply wiring hole (2-W27Knockout)
W
92
27 55
73
23 63
40
92 65
45
Front piping hole (Knockout)
Front trunking hole (Knockout)
Power supply wiring hole (2-W27Knockout)
W
92
4045
65
92
27 55
23 73 63
Rear piping hole (Knockout)
Rear trunking hole (Knockout)
Power supply wiring hole (2-W27Knockout)
W92
FOUNDATION
over 100mm
over 500mm
over 10mm
FREE
over 10mm
Unit : mm(inch)
OUTDOOR UNIT
PUHZ-P100VHA3R1.UK

14
Unit : mm(inch)
PUHZ-P125VHA3R1.UK
PUHZ-P140VHA3R1.UK
Less than
Over
Over Over
Over
Handle for moving
Side Air Intake
Front piping cover
Rear piping cover
Air intake
Rear Air Intake
Handle for moving
Handle for moving
Terminal connection
Left···Power supply wiring Right···Indoor/Outdoor wiring
Earth terminal
Service panel
Handle for moving
1
2
The diagram below shows a basic example. Explantion of particular details is given in the installation manuals etc.
Dimensions of space needed for service access are shown in the below diagram.
<Foundation bolt height>
Please secure the unit firmly with 4 foundation (M10) bolts. (Bolts and washers must be purchased locally.)
Air Discharge
Rear Air Intake
Side Air Intake
···Refrigerant GAS pipe connction (FLARE)W15.88(5/8 inch) ···Refrigerant LIQUID pipe connection (FLARE)W9.52(3/8 inch)
+1 ···Indication of STOP VALVE connection location.
Example of Notes
Piping Knockout Hole Details
1 FREE SPACE (Around the unit)
2 SERVICE SPACE
3 FOUNDATION BOLTS
4 PIPING-WIRING DIRECTIONS
Piping and wiring connections can be made from 4 directions: front, right, rear and below.
30
FOUNDATION
150
500
500
10
Service space
600175 175
330
417
42
66
53 56
45
(19)28 370
2-U Shaped notched holes (Foundation Bolt M10)
2-12 x 36 Oval holes (Foundation Bolt M10)
Installation Feet
30
45 40
65 92
27 55
23 73 63
Rear piping hole (Knockout)
Rear trunking hole (Knockout)
Power supply wiring hole (2-
W
27Knockout)
W
92
19 55
92
75 40
73 63
23 27 92
Right piping hole (Knockout) Right trunking hole
(Knockout)
Power supply wiring hole (2-
W
27Knockout)
W
92
92 65
4540
27 55
23 73 63
Front piping hole (Knockout)
Front trunking hole (Knockout)
Power supply wiring hole (2-
W
27Knockout)
W
92
14514522030 145
81 219
71
71
Bottom piping hole (Knockout)
Drain hole (5-W33)
1350
23
950
1076
+1 447
+1 443
371 635
322
Handle for moving
Over 10mm Over 10mm
Over 150mm
Over 1000mm
FREE

15
8 WIRING DIAGRAM
123456
OFF
ON
100V
MODEL SW5-6 + 3
+1 MODEL SELECT
123456
OFF
ON
125V
123456
78
78
78
OFF
ON
140V
123456
OFF
ON
SW6
123456
OFF
ON
123456
OFF
ON
TB1
MC
MF1,MF2
21S4
63H
TH3
TH4
TH6
TH7
TH8
LEV-A
DCL
Terminal Block<Power Supply, Indoor/Outdoor >
Motor Compressor
Fan Motors
Solenoid Valve (Four-Way Valve)
High Pressure Switch
SV Solenoid Valve (Bypass Valve)
CH Crankcase Heater
Thermistor<Outdoor Pipe>
Thermistor<Discharge>
Thermistor<Outdoor 2-Phase Pipe>
Thermistor<Outdoor>
Thermistor<Heatsink>
Electronic Expansion Valve
Reactor
ACTM Active Filter Module
CB Main Smoothing Capacitor
Diode Bridge
Noise Filter Circuit Board
N.F. Controller Circuit Board
Switch<Pump Down>
Connector<Emergency Operation>
SWP
CN31
C.B.
DS2,3
Power Module IPM
SYMBOL NAME SYMBOL NAME SYMBOL NAME
Connection Terminal<DC Voltage>
Connection Terminal<L/N- Phase>
TABP1/P2/P
TABS/T
Connection Terminal<DC Voltage>
TABN1/N2/N
Power Circuit Board
Connection Terminal<U/V/W-Phase>
P.B.
TABU/V/W
Fuse<T6.3AL250V>
Switch<Forced Defrost, Defect History Record
Reset, Refrigerant Address>
Switch<Test Operation>
Switch<Function Switch>
Switch<Model Select>
F1~F4
SW1
SW4
SW5
SW6
SW8 Switch
SW9
Switch<Function Setup>
SW7
Switch
LED1,LED2
Light Emitting Diodes
<Operation Inspection Indicators>
CNM
CNMNT
CNVMNT
CNDM
Connector<A-Control Service Inspection Kit>
Connector<Connected to Optional M-NETAdapter Board>
Connector<Connected to Optional M-NETAdapter Board>
Connector<Connected for Option (Contact Input)>
X51,X52,X54,X55
Relay
CNVMNT
(WHT) CNMNT (WHT)
CNM
(WHT)
CN5
(WHT)
CN2M
(WHT)
CND
(WHT)
CN4
(WHT)
CN2
(WHT)
21S4
(GRN) SS
(WHT)
CN52C
(BLK)
CN5
(RED)
(RED)
CNAC2
(WHT)
CNAC1
NO
LO
SV2
(BLU)
+2
CNDM
(WHT)
CN51
(WHT)
5
55 3
1
1
5
1
16
1
12
CN52C
(RED)
11
1
3
5
2
2
14
3
LEV-A
(WHT)
LED2 LED1
TH7/6
(RED) TH3
(WHT)
CNF1
(WHT)
CNF2
(
WHT)
CNS
(
WHT)
CNAC
(
WHT)
CNDC
(
PNK)
F2
F1
F3
X52 X55 X51
F4
21S4
TRANS
MF1
C.B.
+2
MS
3~
63H
(YLW)
TH4
(WHT)
63H LEV-A
M
TH7 TH6 TH3 TH4
SW7 SW6SW1
SW9
CN31
+1+1
SW5SW8SW4 SWP
TABN
TABP
DCL
UVW
MC
P
L1 L2
Io
N1
N2
CN3
(WHT)
CNAF
(WHT)
CNDC
(PNK)
CN2
(WHT)
IPM
TABT
DS3
DS2 TABS
TABP1
U
TH8
CN4
(WHT)
CN5
(RED)
CB
17
14
7
7
1
31
12
34
4
7
1
1
7
1
2
6
3
2
–~
~
~
~
+
1
+
+
–
3
2
1
1
122
13
1
1
2
2
7
31
tttt
MF2
MS
3~
MS
3~
31
SV
52C
31
SV1/CH
(GRY)
CH
+ 2
X54
31
N.F.
P.B.
LED2
LED3
LED4
LED5 LED1
31
3
SW1 SW11
SW12
TB7
M-NET SUBSTRATE
M-NET
ABS
When M-NET adaptor is connected
1
2
2
2
+
1
2
4
+
16
TABP2
TABN2
TABN1
TABURED
BLK TABW
TABVWHT
–
+
3
2
2
1
1
3
1
UU
1
2
2
E2
EI
CY1
CY2
TB1
S3S2S1NL
INDOOR
UNIT
LI
NI
POWER SUPPLY
~/N 230V 50Hz
ACTM
—
+2 P125, P140 only
+3 SW5-1 to 5: Function Switch
t
PUHZ-P100VHA2.UK PUHZ-P125VHA2.UK PUHZ-P140VHA2.UK
PUHZ-P125VHA21.UK PUHZ-P140VHA21.UK
PUHZ-P100VHA3.UK PUHZ-P125VHA3.UK PUHZ-P140VHA3.UK
PUHZ-P100VHA3R1.UK PUHZ-P125VHA3R1.UK PUHZ-P140VHA3R1.UK

16
9 WIRING SPECIFICATIONS
Outdoor unit model
Outdoor unit power supply
Outdoor unit input capacity *1
Main switch (Breaker)
Outdoor unit power supply
Outdoor unit power supply earth
Indoor unit-Outdoor unit *2
Indoor unit-Outdoor unit earth *2
Remote controller-Indoor unit *3
Outdoor unit L-N (single) *4
Outdoor unit L1-N, L2-N, L3-N (3 phase)
Indoor unit-Outdoor unit S1-S2 *4
Indoor unit-Outdoor unit S2-S3 *4
Remote controller-Indoor unit *4
Wiring
Wire No.%
size (mm2)
Circuit rating
P100, 125V P140V
~/N (single), 50 Hz, ~/N (single), 50 Hz,
230 V 230 V
32 A 40 A
2%Min. 4 2 %Min. 6
1%Min. 4 1 %Min. 6
3%1.5 (Polar) 3 %1.5 (Polar)
1%Min. 1.5 1 %Min. 1.5
2%0.3 (Non-polar) 2 %0.3 (Non-polar)
AC 230 V AC 230 V
AC 230 V AC 230 V
DC 24 V DC 24 V
DC 12 V DC 12 V
*1. A breaker with at least 3 mm contact separation in each pole shall be provided.Use earth leakage breaker(NV).
*2. Refer to 9-3.
*3. The 10 m wire is attached in the remote controller accessory.
*4. The figures are NOT always necessarily the voltage to ground.
S3 terminal has DC 24 V against S2 terminal.However between S3 and S1, these terminals are NOT electrically insulated by the transformer or other device.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Power supply cords and Indoor/Outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC 57)
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.
S1
S2
S3
S1
S2
S3
A-Control
Outdoor Unit
3 poles isolator
Power supply
Isolator
A-Control
Indoor Unit
9-1. 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
N
Earth leakage breaker
wiring circuit breaker or
isolating switch

Earth leakage breaker
wiring circuit breaker or
isolating switch

L
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

Earth leakage breaker
wiring circuit breaker or
isolating switch

1
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 Synchronized twin and triple system Electrical wiring
• Synchronized twin
• Synchronized triple

17
The following connection patterns are available.
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








* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Outdoor unit power supply
Earth leakage breaker
Wiring circuit breaker or isolating switch
Outdoor unit
Indoor unit/outdoor unit connecting cords
Remote controller
Indoor unit
Option










Indoor unit power supply
<For models without heater>
* The optional indoor power supply terminal kits are required.
Simultaneous twin/triple system
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 refering to the figure in the right and the DIP switch settings of
the outdoor unit control board.
* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Outdoor unit power supply
Earth leakage breaker
Wiring circuit breaker or isolating switch
Outdoor unit
Indoor unit/outdoor unit connecting cords
Remote controller
Indoor unit
Option
Indoor unit power supply
ON
OFF 1 2 (SW8)
3
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
*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).
*2. Max. 120 m
*3. The 10 m wire is attached in the remote controller accessory. Max. 500 m
*4. The figures are NOT always necessarily the voltage to ground.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Power supply cords and indoor unit/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord.
(Design 60245 IEC 57)
3. Install an earth longer than other 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
RP35~140
~/N (single), 50 Hz, 230 V
16A
2%Min. 1.5
1%Min. 1.5
2%Min. 0.3
–
2%0.3 (Non-polar)
AC 230 V
–
DC24 V
DC12 V
Circuit
rating
Wiring
Wire No. %size
(mm
2
)
Electric heater
(For models with
heater)
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
Electric heater
(For models with
heater)
S1
S2
S3
L
N
BLUE BLUE
YELLOW YELLOW
CND or CN01
S1
S2
S3
L
N
YELLOW
BLUE BLUE
YELLOW
Indoor unit
control board
* There are three types of labels (labels A, B and C). Affix the appropriate labels to
the units according to the wiring method.
Set the SW8-3 to ON.


CND or CN01
Indoor unit earth











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
L
N
S1
S2
S3
1
2
  
9-2. SEPARATE INDOOR UNIT/OUTDOOR UNIT POWER SUPPLIES

18
9-3. INDOOR – OUTDOOR CONNECTING CABLE
+The Max. cable length may vary depending on the condition of installation, humidity or materials, etc.
Indoor unit-Outdoor unit
Outdoor power supply Max. 45m
3%1.5 (polar)
1%Min. 1.5
Max. 50m
3%2.5 (polar)
1%Min. 2.5
Max. 80m
3%2.5 (polar) and S3 separated
1%Min. 2.5
Indoor unit-Outdoor unit earth
Wire No. %Size ($)
Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections).
Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to
earth or a poor electrical contact at the intermediate connection point.
Indoor unit-Outdoor unit
Indoor/Outdoor separate
power supply Max. 120m
2%Min. 0.3
—
Indoor unit-Outdoor unit earth
Wire No. %Size ($)
+The optional indoor power supply terminal kit is necessary.
*1 : In case that cable with stripe of yellow and green is available.
*2 : In case that the flat cables are connected as this picture, they can be used up to 80m.
*3 : In case of regular polarity connection (S1-S2-S3), wire size is 1.5mm2.
*4 : In case of regular polarity connection (S1-S2-S3)
*5 : Mentioned cable length is just a reference value.
It may be different depending on the condition of installation, humidity or materials, etc.
The cable length may vary depending on the condition of installation, humidity or materials, etc.
The cable shall not be lighter than design 60245 IEC or 60227 IEC.
Cross section
of cable
Round 2.5
2.5
1.5
2.5
3
3
4
4
50
*1
45
*3
60
*4
Not
applicable
*2
Flat
Flat
Round
Wire size
(mm2)Number
of wires
Clockwise : S1-S2-S3
Clockwise : S1-S2-S3-Open
Connect S1 and S3 to the opposite angle
Not applicable
(Because center wire has no cover finish)
From left to right : S1-Open-S2-S3
Polarity L(m) *5
(3C Flat cable × 2)
S1 S2 S3

19
9-4. 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 5cm. Do not put them in the same
conduit tube.
(2) Terminal block (TB7) for transmission wires should never be connected to V power supply. If it is connected,
electronic parts on M-NET P.C. board may burn out.
(3) Use 2-core x 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 would be ok 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 grounding 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 grounding, 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 grounding method described in the
installation manual.
Group
remote
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 for
transmission
wire
Central
remote
controller
M-NET transmission wire
Bad example (Multi spot earthing of shield wire)
Good example 1 (Single spot earthing of shield wire)
Power
supply
appliance M-NET type
outdoor unit
Central
remote
controller
Power
supply
appliance 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
Central
remote
controller
Power
supply
appliance 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)

20
9-4-3. Regulations in address settings
In case of multiple grouping system, M-NET and refrigerant address settings should be done as explained in the above sec-
tion. Set the lowest number in the group for the outdoor unit whose refrigerant address is “00” as its M-NET address.
wRefrigerant addresses can be overlapped if they are in the different group.
wIn 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”.
9-4-1. 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 ones digit and SW12 for tens digit), which
is located on the M-NET board of outdoor unit.
(Factory setting: all addresses are set to “0”.)
9-4-2. Refrigerant address setting
In case of multiple grouping system (multiple refrigerant circuits in one 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
12
~
50
M-NETAddress No. <Setting example>
Switng
setting
SW11
ones
digit
SW12
tens
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
System
controller
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 for
transmission
wire
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
System
controller
Power
supply
unit for
transmission
wire
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 trans-
mission wire (no-polarity) 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 ground wire on the plate as shown on the right figure.
Transmission
wire Shield part
M-NET
terminal
block Earth
wire
ABS