Mitsubishi PUHZ-SP100VHA User manual

SERVICE MANUAL R410A
PUHZ-SP100VHA.UK
PUHZ-SP100YHA.UK
CONTENTS
1. REFERENCE MANUAL.................................2
2. SAFETY PRECAUTION.................................2
3. FEATURES.....................................................6
4. SPECIFICATIONS..........................................7
5. DATA...............................................................9
6. OUTLINES AND DIMENSIONS...................12
7. WIRING DIAGRAM ......................................14
8. WIRING SPECIFICATIONS..........................17
9. REFRIGERANT SYSTEM DIAGRAM.............. 22
10. TROUBLESHOOTING..................................24
11. FUNCTION SETTING ...................................81
12. EASY MAINTENANCE FUNCTION.............91
13. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER
....92
14. DISASSEMBLY PROCEDURE...................102
PARTS CATALOG (OCB566)
Outdoor unit
[Model Name]
PUHZ-SP100VHA
PUHZ-SP125VHA
PUHZ-SP140VHA
PUHZ-SP100YHA
PUHZ-SP125YHA
PUHZ-SP140YHA
[Service Ref.]
PUHZ-SP100VHA.UK
PUHZ-SP125VHA.UK
PUHZ-SP140VHA.UK
PUHZ-SP100YHA.UK
PUHZ-SP125YHA.UK
PUHZ-SP140YHA.UK
No. OCH566
REVISED EDITION-A
January 2015
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
Notes:
• This manual describes service
data of the indoor units only.
• RoHS compliant products have
<G> mark on the spec name
plate.
• Please void OCH566.
Revision:
• Modified some descriptions
in "8-1. FIELD ELECTRICAL
WIRING" and "8-2. SEPARATE
INDOOR UNIT/OUTDOOR
UNIT POWER SUPPLIES" in
REVISED EDITION-A.
• Some other descriptions have
been also modified.

2
1REFERENCE MANUAL
INDOOR UNIT’S SERVICE MANUAL
2SAFETY PRECAUTION
2-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminal, all supply circuits must be disconnected.
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 breaker.
• 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.
Model Name Service Ref. Service Manual No.
PLA-SP71/100/125/140BA PLA-SP71/100/125/140BA.UK OCH565
OCB565
PEAD-SP100/125/140JA(L) PEAD-SP100/125/140JA(L).UK ―
BWE01408
OCH566A

3
Cautions for units utilizing refrigerant R410A
2-2. CAUTIONS RELATED TO NEW REFRIGERANT
Use new refrigerant pipes.
Store the piping indoors, and both ends of the
piping sealed until just before brazing.
(Leave elbow joints, etc. in their packaging.)
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.
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.
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.
The refrigerant oil applied to flare and flange
connections must be ester oil, ether oil or
alkylbenzene oil in a small amount. 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.
OCH566A

4
Gravimeter
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
[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 a syphon type.
· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
No. Tool name Specifications
1Gauge manifold
· Only for R410A
· Use the existing fitting specifications. (UNF1/2)
· Use high-tension side pressure of 5.3 MPa·G or over.
2Charge hose · Only for R410A
· Use pressure performance of 5.09 MPa·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 —
OCH566A

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 times higher than that of R22, their sizes of flared sections and flare nuts are different.
1 Thickness 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.)
2 Dimensions 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 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 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.
3 Tools 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
(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 Dimension B (mm)
R410A
* 36.0mm for
indoor unit
of SP100,
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
OCH566A

6
3 FEATURES
CHARGELESS SYSTEM
PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT.
(20 m (PUHZ-SP100), 30 m (PUHZ-SP125/140))
The refrigerant circuit with LEV (Linear Expansion Valve) and Accumulator always control the optimal refrigerant level regardless
of the length (20 or 30 m maximum and 5 m minimum) of piping. The additional refrigerant charging work during installation which
often caused problems heretofore 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-SP100VHA.UK
PUHZ-SP100YHA.UK PUHZ-SP125VHA.UK
PUHZ-SP140VHA.UK
PUHZ-SP125YHA.UK
PUHZ-SP140YHA.UK
OCH566A

7
4 SPECIFICATIONS
A
A
kW
W
kW
K
/min(CFM )
dB
dB
mm(in)
mm(in)
mm(in)
kg(lb)
kg(lb)
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) oNo.
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-SP100VHA.UK
Cooling
13.36
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
TNB220FLHMT
2.9
Inverter
—
Plate fin coil
Propeller fan o1
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
Maximum 30m
Maximum 30m
Heating
15.02
HP switch
Comp. surface thermo
Single, 50Hz, 230V
OUTDOOR UNIT
REFRIGERANT PIPING
28
A
A
kW
W
kW
K
/min(CFM )
dB
dB
mm(in)
mm(in)
mm(in)
kg(lb)
kg(lb)
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) oNo.
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-SP140VHA.UK
PUHZ-SP125VHA.UK
Cooling
17.48
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
TNB306FPGMT
Inverter
30
Plate fin coil
Propeller fan o2
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
Maximum 30m
Maximum 40m
Heating
16.95
Cooling
21.65 29.5
3.9
Heating
20.81
HP switch
Comp. surface thermo
Single 50Hz, 230V
OUTDOOR UNIT
REFRIGERANT PIPING
3.4
28
52
56
51
55
OCH566A

8
A
A
kW
W
kW
K
/min(CFM )
dB
dB
mm(in)
mm(in)
mm(in)
kg(lb)
kg(lb)
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) oNo.
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-SP100YHA.UK
Cooling
4.78
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
TNB220FLCMT
2.9
Inverter
—
Plate fin coil
Propeller fan o1
0.060
60(2120)
Reverse cycle
50
54
950(37-3/8)
330+30(13+1-3/16)
943(37-1/8)
77(170)
R410A
3.0(6.6)
0.87(FV50S)
9.52(3/8)
15.88(5/8)
Flared
Flared
Maximum 30m
Maximum 30m
Heating
5.37
HP switch
Comp. surface thermo
3phase, 50Hz, 400V
OUTDOOR UNIT
REFRIGERANT PIPING
13
A
A
kW
W
kW
K
/min(CFM )
dB
dB
mm(in)
mm(in)
mm(in)
kg(lb)
kg(lb)
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) oNo.
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-SP140YHA.UKPUHZ-SP125YHA.UK
Cooling
6.18
Munsell 3Y 7.8/1.1
Linear Expansion Valve
Hermetic
TNB306FPNMT
Inverter
30
Plate fin coil
Propeller fan o2
0.060+0.060
100(3,530)
Reverse cycle
950(37-3/8)
330+30(13+1-3/16)
1,350(53-1/8)
101(223)
R410A
4.5(9.9)
0.87(FV50S)
9.52(3/8)
15.88(5/8)
Flared
Flared
Maximum 30m
Maximum 40m
Heating
5.99
Cooling
7.58 13
3.9
Heating
7.36
HP switch
Comp. surface thermo
3phase, 50Hz, 400V
OUTDOOR UNIT
REFRIGERANT PIPING
3.4
13
52
56
51
55
OCH566A

9
5DATA
5-1. REFILLING REFRIGERANT CHARGE (R410A : kg)
5-2. COMPRESSOR TECHNICAL DATA
Piping length (one way)
10 m 20 m 30 m 40 m Initial
charged
2.9
4.3
4.3
3.0
4.4
4.4
3.6
4.5
4.5
—
5.1
5.1
3.0
4.5
4.5
Service Ref.
PUHZ-SP100VHA.UK
PUHZ-SP100YHA.UK
PUHZ-SP125VHA.UK
PUHZ-SP125YHA.UK
PUHZ-SP140VHA.UK
PUHZ-SP140YHA.UK
U-V
U-W
W-V
Service Ref.
Compressor model
Winding
Resistance
( ")
(at 20˚C)
TNB306FPGMT
0.53
0.53
0.53
TNB220FLHMT
0.88
0.88
0.88
PUHZ-SP100VHA.UK PUHZ-SP125VHA.UK
PUHZ-SP140VHA.UK
U-V
U-W
W-V
Service Ref.
Compressor model
Winding
Resistance
( ")
PUHZ-SP100YHA.UK PUHZ-SP125YHA.UK
PUHZ-SP140YHA.UK
TNB220FLCMT
1.41
1.41
1.41
TNB306FPNMT
1.02
1.02
1.02
Additional charge is required for pipes
longer than 20 or 30m.
OCH566A

10
5-3. 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-SP100VHA.UK
PUHZ-SP100YHA.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-SP125VHA.UK
PUHZ-SP125YHA.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-SP140VHA.UK
PUHZ-SP140YHA.UK
COOLING
MODE
HEATING
52
SPL(dB)
56
LINE
OCH566A

11
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)
TotalElectrical circuitRefrigerant circuitIndoor side
Outdoor
side
Representative matching
SHF
BF
W
kW
Mode
Capacity
Input
Amperes
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
MPa
(Of/F)
MPa
(Of/F)
°C
°C
°C
m
°C
°C
°C
°C
°C
Indoor unit
D.B.
W.B.
D.B.
D.B.
W.B.
PLA-SP125BA PLA-SP140BAPLA-SP100BA
PLA-SP100BA PLA-SP125BA PLA-SP140BA
Cooling
9,400
3.12
Heating
11,200
3.49
Cooling
12,300
4.08
Heating
13,500
3.96
Cooling
13,000
4.98
Heating
15,500
4.83
13.36 / 4.78
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
15.02 / 5.37
2.57
(26.2)
0.62
(6.3)
75.5
41.4
0.1
5
20
15
43.4
7
6
—
—
17.48/ 6.18
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
16.95 / 5.99
2.56
(26.1)
0.68
(6.9)
64.5
43.4
1.3
5
20
15
44.2
7
6
—
—
21.65 / 7.58
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
20.81 / 7.36
2.75
(28.1)
0.64
(6.5)
70.8
47.2
1.0
5
20
15
48.0
7
6
—
—
1 / 3, 50
230 / 400
1 / 3, 50
230 / 400
PUHZ-SP100VHA
PUHZ-SP100YHA PUHZ-SP125VHA PUHZ-SP125YHA PUHZ-SP140VHA PUHZ-SP140YHA
1 / 3 , 50
230 / 400
0.14
0.94
0.13
0.87
0.15
1.00
0.14
0.94
0.16
1.07
0.15
1.00
Outdoor unit
Phase , Hz
Volts
Input
V
kW
A
1 , 50
230
1 , 50
230
1 , 50
230
A
OCH566A

12
6OUTLINES AND DIMENSIONS
Unit : mm
417
56 41
41
54
(19)37028
53
175600175
330
2-12o36 oval holes (Foundation Bolt M10)
Air Discharge
Rear Air Intake
Side Air Intake
2-U Shaped notched holes (Foundation 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
1···Refrigerant GAS pipe connection (FLARE){15.88(5/8 inch) 2···Refrigerant LIQUID pipe connection (FLARE){9.52(3/8 inch)
w1 ···Indication of STOP VALVE connection location.
The diagram below shows a basic example. Explanation 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-{33)
Bottom piping hole (Knockout)
Air Intake
Rear Air Intake
Handle for moving
Handle for moving
23
943
473
950
322
w1 447
w1 431
SP100VHA:670
SP100YHA:589
Terminal Connections
Left···Power supply wiring Right···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-{27Knockout)
{
92
27 55
73
23 63
40
92 65
45
Front piping hole (Knockout)
Front trunking hole (Knockout)
Power supply wiring hole (2-{27Knockout)
{
92
4045
65
92
27 55
23 73 63
Rear piping hole (Knockout)
Rear trunking hole (Knockout)
Power supply wiring hole (2-{27Knockout)
{92
FOUNDATION
over 100mm
over 500mm
over 10mm
FREE
over 10mm
PUHZ-SP100VHA.UK PUHZ-SP100YHA.UK
OCH566A

13
Unit : mm
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. Explanation 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
1···Refrigerant GAS pipe connection (FLARE){15.88(5/8 inch) 2···Refrigerant LIQUID pipe connection (FLARE){9.52(3/8 inch)
w1 ···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
41
56
53 54
41
(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-
{
27Knockout)
{
92
19 55
92
75 40
73 63
23 27 92
Right piping hole (Knockout) Right trunking hole
(Knockout)
Power supply wiring hole (2-
{
27Knockout)
{
92
92 65
4540
27 55
23 73 63
Front piping hole (Knockout)
Front trunking hole (Knockout)
Power supply wiring hole (2-
{
27Knockout)
{
92
14514522030 145
81 219
71
71
Bottom piping hole (Knockout)
Drain hole (5-{33)
1350
23
950
w1 447
w1 431
371 635
322
Handle for moving
Over 10mm Over 10mm
Over 150mm
Over 1000mm
FREE
SP125/140VHA: 1076
SP125/140YHA: 994
PUHZ-SP125VHA.UK PUHZ-SP140VHA.UK
PUHZ-SP125YHA.UK PUHZ-SP140YHA.UK
OCH566A

14
7WIRING DIAGRAM
1 2 3 4 5 6 7 8
OFF
ON
100V
MODEL SW6
*1 MODEL SELECT
*2 SW5 -1 to 5 : Function Switch
*3 SP125/140 only
SW5-6 *2
OFF
ON
1 2 3 4 5 6
1 2 3 4 5 6 7 8
OFF
ON
125V
OFF
ON
1 2 3 4 5 6
1 2 3 4 5 6 7 8
OFF
ON
140V
OFF
ON
1 2 3 4 5 6
TB1
MC
MF1, MF2
21S4
TH3
TH6
TH7
DCL
Terminal Block <Power Supply, Indoor/Outdoor>
Motor for Compressor
Fan Motor
Solenoid Valve (Four-Way Valve)
63H High Pressure Switch
Thermistor <Liquid>
Thermistor <2-Phase Pipe>
Thermistor <Ambient>
TH8 Thermistor (internal) <Heat Sink>
TH32 Thermistor <Comp. Surface>
Linear Expansion Valve
Reactor
CB
Main Smoothing Capacitor
CY1, CY2
Capacitor
SV
Solenoid Valve (Bypass Valve)
CH
Crankcase Heater
Controller Circuit Board
C.B.
SYMBOL NAME SYMBOL NAME SYMBOL NAME
Switch <Function Switch>
Switch <Manual Defrost, Defect History, Record
Reset, Refrigerant Address>
Switch <Test Operation>
Switch <Function Switch, Model Select>
Switch <Model Select>
SW7
SW1
SW4
SW5
SW6
Switch <Function Switch>
SW8
Switch <Pump Down>
SWP
Connector <Emergency Operation>
CN31
LED1, LED2
F1, F2, F3, F4
LED <Operation Inspection Indicators>
CNM
CNDM
Connector <Connection for Option>
Connector <Connection for Option>
Fuse <T6.3AL250V >
X51, X52, X54, X55
Relay
SS
Connector <Connection for Option>
LEV-A
Power Module
Connection Terminal <Reactor>
Connection Terminal <Ground>
DCL1, DCL2
IGBT
EI, E2, E3, E4
P.B. Power Circuit Board
Connection Terminal <U/V/W-Phase>
NI Connection Terminal <N-Phase>
LI Connection Terminal <L-Phase>
U/V/W
Switch <Function Switch>
SW9
*3
CN5
(WHT)
3 1
TB7
2
1
CND
(WHT)
CN2M
(WHT)
M-NETADAPTER
M-NET
A B S
When M-NET adapter is connected
CNVMNT
(WHT)
31
CNDM
(WHT)
CN51
(WHT)
3
1
5
1
CNMNT
(WHT)
CNM
(WHT)
51
LEV-A
(WHT)
LEV-A
C. B.
35
TH7/6
(RED)
63H
(YLW)
TRANS
X51
TH3
(WHT)
CNDC
(PNK)
TH7 TH6 TH3
41 21
SW7
SW6SW1
SW9
CN31
141
M
CN2
(WHT)
CNS
(WHT)
CNAC
(WHT)
CN4
(WHT)
SS
(WHT)
21S4
(GRN)
2
1
LED1
LED2
X52
F1
F2
F4
F3
*1*1
21
43
SW5SW8SW4 SWP
21S4 SV
61
3
1
3
1
2
3 1
7
1
7
7
2
t° t° t°
TH32
(BLK)
TH32
21
t°
13 SV2
(BLU) SV1
/CH
(GRY)
X55
13
X54
13 13
CN52C
(RED)
3
3
1
63H
5
3
5
1
DCL2
IGBT
N2
P2
MS
3~
U
U
V
V
W
W
CN2
(WHT)
CN4
(WHT)
17
12
2
P. B.
CNDC
(PNK)
BLK
WHT
CY1
CY2
LINI
EI
E4
E2
E3
POWER SUPPLY
~/N 230V 50Hz
INDOOR
UNIT
TB1
L N S1 S2 S3
MC
3
1
3
1
2
REDRED
CNAC1
(WHT) CNAC2
(RED)
13
1
3
CN52C
(RED)
52C
52C
BLU
YLW
GRN/YLW
ORN
BRN
RED
WHT
RED
BLK BLK
BLK
BLK
RED
BRN
ORN
WHT
DCL1
DCL
CB
t°
TH8
3
BLK
WHT
CH
*3 *3
MF1 CNF1
(WHT)
CNF2
(WHT)
7
1
MS
3~
MF2
7
1
MS
3~
The black square ( ) indicates a switch position.
PUHZ-SP100VHA.UK PUHZ-SP125VHA.UK PUHZ-SP140VHA.UK
OCH566A

15
PUHZ-SP100YHA.UK
The black square ( ) indicates a switch position.
SYMBOL NAME SYMBOL NAME SYMBOL NAME
TB1 Terminal Block <Power Supply> RS Rush Current Protect Resistor SW4 Switch <Test Operation>
TB2 Terminal Block <Indoor/Outdoor> CY1, CY2 Capacitor SW5 Switch <Function Switch, Model Select>
MC Motor for Compressor P.B. Power Circuit Board SW6 Switch <Model Select>
MF1 Fan Motor TB-U/V/W
Connection Terminal <U/V/W-Phase> SW7 Switch <Function Switch>
21S4 Solenoid Valve (Four-Way Valve)
TB-L1/L2/L3 Connection Terminal <L1/L2/L3-Power Supply> SW8 Switch <Function Switch>
63H High Pressure Switch TB-P1/P3
Connection Terminal SW9 Switch <Function Switch>
TH3 Thermistor <Liquid> X52CA/B 52C Relay SWP Switch <Pump Down>
TH6 Thermistor <2-Phase Pipe> N.F. Noise Filter Circuit Board CN31 Connector <Emergency Operation>
TH7 Thermistor <Ambient>
LI1/LI2/LI3/NI
Connection Terminal <L1/L2/L3/N-Power Supply> SS Connector <Connection for Option>
TH8 Thermistor <Heat Sink>
LO1/LO2/LO3
Connection Terminal <L1/L2/L3-Power Supply> CNDM Connector <Connection for Option>
TH32 Thermistor <Comp. Surface> GD1, GD2
Connection Terminal <Ground> CNM Connector <Connection for Option>
LEV-A Linear Expansion Valve C.B. Controller Circuit Board
LED1, LED2 LED <Operation Inspection Indicators>
DCL Reactor SW1
Switch <Manual Defrost, Defect History,
Record Reset, Refrigerant Address>
F1, F2, F3, F4 Fuse <T6.3AL250V>
ACL4 Reactor
X51, X52, X54, X55
Relay
TB7 Terminal Block <M-NET connection>
SYMBOL NAME
CN5 Connector <Transmission>
CND Connector <Power Supply>
CN2M Connector <M-NET communication>
M-NET ADAPTER
TH8
t°
LEV-A
(WHT)
61
3
CNVMNT
(WHT)
CN4
(WHT)
CNMNT
(WHT)
31 5 1
CN5
(WHT)
3 1
TB7
5
1
2
5
1
CND
(WHT)
CN2M
(WHT)
M-NET
When M-NET adapter is connected
12
34
CNS
(WHT)
13
21S4
(GRN)
MF1
TRANS
CNF1
(WHT)
1
3
CNDC
(PNK)
CN2
(WHT)
CNAC
(WHT)
13
SV2
(BLU)
X55
X51
X52
13
SS
(WHT)
ACL4
BLK
BLK
WHT
WHT WHT
RED
BLK
BLU
GRN/YLW
WHT
RED
CNAC1
(WHT) CNCT
(RED) CNAC2
(RED)
CNL
(BLU)
CNDC
(PNK)
P.B.
C.B.
N.F.
LO1
GD2
LO2
LO3
LI1
LI2
LI3
NI
TB1
TB2
POWER
SUPPLY
3N~
400V 50Hz
INDOOR
UNIT
1
F2
F1
F3
F4
TH7/6
(RED)
63H
(YLW)
TH3
(WHT)
TH7 TH6 TH3
41 21
3
1
t° t° t°
TH32
(BLK)
TH32
21
t°
63H
2
2
1
7
23
72 2
7
1
71
3121
LEV-A
M
LED1
LED2
CNM
(WHT)
114
3
1
5
1
35
CNDM
(WHT)
CN51
(WHT)
SW7
SW6SW1
SW9
CN31
*1 *1
SW5SW8SW4 SWP
21S4
A B S
++
1331
31
L1
L2
L3
N
S1
S2
S3
YLW
CY2
CY1
ORN
BLK
BRN
MS
3~
2
2
M-NET ADAPTER
BLK
GD1
13
SV1
/CH
(GRY)
X54
1 2 3 4 5 6 7 8
OFF
ON
100Y
MODEL SW6
*1 MODEL SELECT
*2SW5 -1 to 5 : Function Switch
SW5-6 *2
OFF
ON
1 2 3 4 5 6
RS
CN6
(WHT) CN5 (RED) CN2 (WHT) CN4 (WHT)
TB-U
TB-V
TB-W
UW
V
DCL
RED
WHT
BLK
MC
WHT
RED
BLK
RED RED
X52CA
BLK
-
MS
3~
71 2122 11
TB-P3
TB-P1
TB-L3
TB-L2
L3IN
TB-L1
+
-
+-
+ + +
+ + +
X52CB
L3OUT
OCH566A

16
PUHZ-SP125YHA.UK PUHZ-SP140YHA.UK
TB1
MC
MF1, MF2
21S4
TH3
TH6
TH7
LEV-A
ACL4
Terminal Block<Power Supply >
TB2 Terminal Block<Indoor/Outdoor >
Motor for Compressor
Fan Motor
Solenoid Valve (Four-Way Valve)
63H High Pressure Switch
CH Crankcase Heater
SV Solenoid Valve (Bypass Valve)
Thermistor<Liquid>Thermistor<2-Phase Pipe>
Thermistor<Ambient>
TH8 Thermistor (internal) <Heat Sink>
TH32 Thermistor<Comp. Surface>
Electronic Expansion Valve
Reactor
DCL Reactor
RS Rush Current Protect Resistor
CY1,CY2 Capacitor
CB1, CB2 Main Smoothing Capacitor
Power Circuit Board
Connection Terminal<U/V/W-Phase>
P.B.
TB-U/V/W
Noise Filter Circuit Board
Connection Terminal
<L1/L2/L3/N-Power Supply >
N.F.
LI1/LI2/LI3/NI
Connection Terminal <L1/L2/L3/N-Power Supply >
LO1/LO2/LO3
Controller Circuit Board
SW8
Connector<Emergency Operation>
CN31
C.B. Connection Terminal<Ground>GD1, GD2
SYMBOL NAME SYMBOL NAME SYMBOL NAME
Connection Terminal
TB-P1 Connection Terminal
<L1/L2/L3-Power Supply >
TB-L1/L2/L3
Switch<Function Switch>
SW9 Switch<Pump Down>
SWP
Switch<Manual Defrost, Defect History, Record
Reset, Refrigerant Address>
Switch<Function Switch, Model Select>
Switch<Function Switch>
Switch<Function Switch>
SW1
SW5 Switch<Model Select>
SW6
SW7
Switch<Test Operation>
SW4
LED1,LED2
LED<Operatiion Inspection Indicators>
CNM Connector<Connection for Option>
SS Connector<Connection for Option>
CNDM Connector<Connection for Option>
FUSE<T6.3AL250V>
F1,F2,F3,F4
Connection Terminal
TB-P2 Connection Terminal
TB-C1 Connection Terminal
TB-N1 52C Relay
X52A
X51,X52,X54,X55
Relay
TB7 Terminal Block <M-NET connection>
SYMBOL NAME
CN5 Connector <Transmission>
CND Connector <Power Supply>
CN2M Connector <M-NET communication>
M-NET ADAPTER
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
MODEL SW6
*1 MODEL SELECT
*2 SW5 -1 to 5 : Function Switch
SW5-6 *2
OFF
ON
125Y
OFF
ON
OFF
1 2 3 4 5 6
1 2 3 4 5 6
OFF
ON
140Y
ON
is the switch position
LEV-A
(WHT)
61
3
CNVMNT
(WHT)
CN4
(WHT)
CNMNT
(WHT)
31 5 1
71
2
1
2
1
12
34
CNS
(WHT)
13
21S4
(GRN)
MF1
TRANS
CNF1
(WHT)
CNF2
(WHT)
1
3
CNDC
(PNK)
CN2
(WHT)
CNAC
(WHT)
13
SV2
(BLU)
X55
X51
X52
13
SS
(WHT)
+
--
--
+
+ +
+
+
ACL4
DCL
X52A
TB-P1
CN2
(WHT)
TB-P2
CB1 CB2
TB-C1 TB-N1
TB-W BLK
WHT
RED
RED
BLK
WHT
RED
BLK
BLK BLK
WHT
WHT
WHT
RED
BLK
BLU
GRN/YLW
WHT
RED
TB-V
TB-U
TB-L3
TB-L2
TB-L1
W
V
U
MC
CN4
(WHT)
CNAC1
(WHT)
CN5
(RED)
CNCT
(RED) CNAC2
(RED)
CNL
(BLU)
CNDC
(PNK)
RS
P.B.
C.B.
N.F.
LO1
GD1 GD2
LO2
LO3
LI1
LI2
LI3
NI
TB1
TB2
POWER
SUPPLY
3N~
400V 50Hz
INDOOR
UNIT
1
F2
F1
F3
F4
TH7/6
(RED)
63H
(YLW)
TH3
(WHT)
TH7 TH6 TH3
41 21
3
1
t° t° t°
TH32
(BLK)
TH32
21
t°
63H
2
2
1
7
2
7
RED
WHT
BLK
7
1
71
BLK
BLK
3121
LEV-A
M
LED1
LED2
CNM
(WHT)
114
3
1
5
1
35
CNDM
(WHT)
CN51
(WHT)
SW7
SW6SW1
SW9
CN31
*1*1
SW5SW8SW4 SWP
SV21S4
MS
3~
+
1331
31
L1
L2
L3
N
S1
S2
S3
YLW
CY2 CY1
ORN
BRN
MS
3~
2
2
2
2
13
SV1
/CH
(GRY)
X54
CH
CN5
(WHT)
3 1
TB7
5
1
2
5
1
CND
(WHT)
CN2M
(WHT)
M-NET
When M-NET adapter is connected
3
A B S
M-NET ADAPTER
t°
TH8
MF2
7
1
MS
3~
+
--
OCH566A

17
8WIRING SPECIFICATIONS
Outdoor unit model
Outdoor unit power supply
Outdoor unit input capacity *1
Main switch (Breaker)
Outdoor unit power supply
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.o
size (mm
2
)
Circuit rating
SP100, 125V SP140V
~/N (single), 50 Hz, ~/N (single), 50 Hz,
230 V 230 V
32 A 40 A
3 oMin. 4 3 oMin. 6
3 o1.5 (Polar) 3 o1.5 (Polar)
1 oMin. 1.5 1 oMin. 1.5
2 o0.3 (Non-polar) 2 o0.3 (Non-polar)
230 V AC
24 V DC
SP100/125/140Y
3N~ (3ph,4-wires),
50Hz, 400 V
16 A
5 oMin. 1.5
3 o1.5 (Polar)
1 oMin. 1.5
2 o0.3 (Non-polar)
*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use earth leakage breaker(NV).
*2. Refer to “8-3. INDOOR – OUTDOOR CONNECTING CABLE”.
*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 24 V DCagainst 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 byelectrical 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
Caution: Be sure to install N-Line. Without N-Line, it could cause damage to the unit.
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.
230 V AC 230 V AC
230 V AC 230 V AC 230 V AC
24 V DC 24 V DC
12 V DC 12 V DC 12 V DC
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
C
1:1 system
OCH566A

18
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
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 cords
FRemote controller
GIndoor unit
HOption
JIndoor unit power supply
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.
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. Maximum 120 m
*3. The 10 m wire is attached in the remote controller accessory. Maximum 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
SP100/125/140
~/N (single), 50 Hz, 230 V
16A
2oMin. 1.5
1oMin. 1.5
2oMin. 0.3
–
2 o0.3 (Non-polar)
230 V DC
–
24 V DC
12 V DC
Circuit
rating
Wiring
Wire No. osize
(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
Note:
8-2. SEPARATE INDOOR UNIT/OUTDOOR UNIT POWER SUPPLIES
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19
8-3. INDOOR – OUTDOOR CONNECTING CABLE
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. 45m
3 o1.5 (polar)
1 oMin. 1.5
Max. 50m
3 o2.5 (polar)
1 oMin. 2.5
Max. 80m
3 o2.5 (polar) and S3 separated
1 oMin. 2.5
Indoor unit-Outdoor unit earth
Wire No. oSize (E)
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 oMin. 0.3
—
Indoor unit-Outdoor unit earth
Wire No. oSize (E)
*Note: 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
OCH566A

20
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 V power supply. If it is connected, electronic
parts on M-NET P.C. board may burn out.
(3) Use 2-core × 1.25 mm² 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.
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
5Bad 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
OCH566A