Mitsubishi Electric PUH-P1.6VGA Operating manual

TECHNICAL & SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. SAFETY PRECAUTION··································2
2. COMBINATION OF INDOOR AND OUTDOOR UNITS ···4
3. PART NAMES AND FUNCTIONS··················4
4. SPECIFICATIONS···········································5
5. DATA·······························································8
6. OUTLINES AND DIMENSIONS····················11
7. WIRING DIAGRAM·······································15
8. REFRIGERANT SYSTEM DIAGRAM ·············17
9. DISASSEMBLY PROCEDURE·····················18
10. PARTS LIST··················································22
11. OPTIONAL PARTS ························Back cover
Outdoor unit
[model names]
PUH-P1.6VGA
PUH-P2VGA
PUH-P2.5VGA
PUH-P3VGA
PUH-P3YGA
PUH-P4YGA
PUH-P5YGA
PUH-P6YGA
No.OC180
1999
The Slim Line.
From Mitsubishi Electric.
R407C
[Service Ref.]
PUH-P1.6VGA
PUH-P2VGA
PUH-P2.5VGA
PUH-P3VGA
PUH-P3YGA
PUH-P4YGA
PUH-P5YGA
PUH-P6YGA

2
Cautions for using with the outdoor unit which adopts R407C refrigerant.
·Do not use the existing refrigerant piping.
-The old refrigerant and refrigerant oil in the existing piping contains a large amount of chlorine which may cause the
refrigerant oil of the new unit to deteriorate.
· Do not use copper pipes which are broken, deformed or discolour .
In addition, be sure that the inner surfaces of the pipes are clean, free of hazardous sulphur and oxides, or have no dust /
dirt, shaving particles, oils, moisture or any other contamination.
-If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the refrigerant oil will
result.
· Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before
brazing. (Store elbows and other joints in a plastic bag.)
-If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and compressor trouble may result.
· Use ester oil, ether oil or alkyl benzene (small amount) as the refrigerant oil to coat flares and flange connections.
-The refrigerant oil will degrade if it is mixed with a large amount of mineral oil.
Use liquid refrigerant to fill the system.
-If gas refrigerant is used to fill the system, the composition of the refrigerant in the cylinder will change and performance
may drop.
· Do not use a refrigerant other than R407C.
-If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may cause the refrigerant oil to deteriorate.
· Use a vacuum pump with a reverse flow check valve.
-The vacuum pump oil may flow back into the refrigerant cycle and cause the refrigerant oil to deteriorate.
· Do not use the following tools that are used with conventional refrigerant.
(Gauge manifold , charge hose, gas leak detector, reverse flow check valve, refrigerant charge base, vacuum gauge,
refrigerant recovery equipment)
-If the conventional refrigerant and refrigerant oil are mixed in the R407C, the refrigerant may deteriorated.
-If water is mixed in the R407C, the refrigerant oil may deteriorate.
-Since R407C does not contain any chlorine, gas leak detectors for conventional refrigerant will not react to it.
· Do not use a charging cylinder.
-Using a charging cylinder may cause the refrigerant to deteriorate.
· Be especially careful when managing the tools.
-if dust, dirt, or water gets in the refrigerant cycle, the refrigerant may deteriorate.
· Do not use the drier which is sold in the field.
-The drier for R407C refrigerant is pre-attached to outdoor unit refrigerant circuit.
-Some drier in the field are not in conformity with R407C refrigerant .
1SAFETY PRECAUTION

3
[3] Refrigerant recharging
(1) Refrigerant recharging process
1Direct charging from the cylinder.
·R407C cylinder are available on the market has a syphon pipe.
·Leave the syphon pipe cylinder standing and recharge it.
(By liquid refrigerant)
(2) Recharge in refrigerant leakage case
·After recovering the all refrigerant in the unit, proceed to working.
·Do not release the refrigerant in the air.
·After completing the repair service, recharge the cycle with the specified amount of
liquid refrigerant.
Gravimeter
Unit
[1] Service tools
Use the below service tools as exclusive tools for R407C refrigerant.
No. Tool name Specifications
1Gauge manifold ·Only for R407C.
·Use the existing fitting SPECIFICATIONS. (UNF7/16)
·Use high-tension side pressure of 3.43MPa·G or over.
2Charge hose ·Only for R407C.
·Use pressure performance of 5.10MPa·G or over.
3Electronic scale
4Gas leak detector ·Use the detector for R407C.
5Adapter for reverse flow check. ·Attach on vacuum pump.
6Refrigerant charge base.
7Refrigerant cylinder. ·For R407C ·Top of cylinder (Brown)
·Cylinder with syphon
8Refrigerant recovery equipment.
[2] Notice on repair service
·After recovering the all refrigerant in the unit, proceed to working.
·Do not release refrigerant in the air.
·After completing the repair service, recharge the cycle with the specified amount of
liquid refrigerant.

4
3 PART NAMES AND FUNCTIONS
2 COMBINATION OF INDOOR AND OUTDOOR UNITS
CHARGELESS SYSTEM
PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT.(Max.30m)
The refrigerant circuit with LEV(Linear Expansion Valve) and a large 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.
Air intake
Air outlet
(Expels warm air during cooling)
Air intake
Air outlet
Air intake Air outlet
Air intake
Air outlet
Indoor unit Outdoor unit
Service Ref.
PLH-P•KAH
PCH-P•GAH
PKH-P•GALH
PKH-P•FALH
OC181
OC182
OC176
OC175
Service
Manual No. 1.6
VGA
—
—
2
VGA
—
2.5
VGA
—
VGA
—
YGA
—
4
YGA
—
6
YGA
—
—
5
YGA
—
—
3
PUH-P1.6VGA PUH-P2VGA
PUH-P2.5VGA
PUH-P3VGA
PUH-P3YGA
PUH-P4YGA PUH-P5YGA
PUH-P6YGA

5
4 SPECIFICATIONS
kW
A
A
kW
kW
K
/min(CFM )
W
dB(A)
dB(A)
mm,(in.)
mm,(in.)
mm,(in.)
kg,(lbs)
kg,(lbs)
cc
mm,(in.)
mm,(in.)
Function
Power supply (phase, cycle, voltage)
Input
Running current
Starting current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Heat exchanger
Fan(drive) oNo.
Fan motor output
Airflow
Crankcase heater
Defrost method
Noise level
Dimensions
Weight
Refrigerant
Charge
Oil (Model)
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
OUTDOOR UNIT
REFRIGERANT PIPING
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Notes1.Rating Conditions (JIS B8616)
Cooling :Indoor : 27˚C(80˚F)DB. 19˚C (66˚F)WB Outdoor : 35˚C(95˚F)DB. 24˚C (75˚F)WB
Heating :Indoor : 20˚C(68˚F)DB. Outdoor : 7˚C(45˚F)DB. 6˚C (43˚F)WB
Refrigerant piping length (one way) : 5m (16ft)
3. Above deta based on indicated voltage
Indoor Unit 1 phase 240V 50Hz
Outdoor Unit 1 phase 240V 50Hz
2. Guaranteed operating range
Upper limit
Lower limit
Upper limit
Lower limit
Indoor
32˚C DB, 23˚C WB
21˚C DB, 15˚C WB
27˚C DB
20˚C DB
Outdoor
43˚C DB
-5˚C DB
24˚C DB, 18˚C WB
-5˚C DB, -6˚C WB
Cooling
Heating
Service Ref. PUH-P1.6VGA PUH-P2VGA PUH-P2.5VGA
Cooling
1.71
7.66 36
RE277VHSM
1.3
45(1,590)
30
46
48
650(25-5/8)
55(121)
2.6(5.7)
570 (Ester)MEL56
Single, 50Hz, 220-240V
74
Munsell 5Y 8/1
Linear Expansion Valve
Hermetic
NE38VMJM
1.7
Line start
Inner thermostat, HP switch, Discharge thermo
Plate fin coil
Propeller (direct) o1
0.07
55(1,940)
Reverse cycle
49
900(35-7/16)
330+20(13+3/4)
71(157)
R407C
3.1(6.8)
9.52(3/8)
15.88(5/8)
Flared
Flared
Heating
1.83
8.19
Cooling
2.63
11.78
38
48
855(33-5/8)
1200 (Ester)MEL56
77
NE41VMJM
1.9
50(1,770)
50
82(181)
3.3(7.3)
Max. 50m
Max. 50m
Heating
2.58
11.55
Cooling
2.48
11.11
Heating
2.57
11.51
Max. 40m
Max. 40m

6
kW
A
A
kW
kW
K
/min(CFM )
W
dB(A)
dB(A)
mm,(in.)
mm,(in.)
mm,(in.)
kg,(lbs)
kg,(lbs)
cc
mm,(in.)
mm,(in.)
Function
Power supply (phase, cycle, voltage)
Input
Running current
Starting current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Heat exchanger
Fan(drive) oNo.
Fan motor output
Airflow
Crankcase heater
Defrost method
Noise level
Dimensions
Weight
Refrigerant
Charge
Oil (Model)
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
OUTDOOR UNIT
REFRIGERANT PIPING
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Notes1.Rating Conditions (JIS B8616)
Cooling :Indoor : 27˚C(80˚F)DB. 19˚C (66˚F)WB Outdoor : 35˚C(95˚F)DB. 24˚C (75˚F)WB
Heating :Indoor : 20˚C(68˚F)DB. Outdoor : 7˚C(45˚F)DB. 6˚C (43˚F)WB
Refrigerant piping length (one way) : 5m (16ft)
3. Above deta based on indicated voltage
Indoor Unit 1 phase 240V 50Hz
Outdoor Unit 1 phase 240V 50Hz/3 phase 415V 50Hz
2. Guaranteed operating range
Upper limit
Lower limit
Upper limit
Lower limit
Indoor
32˚C DB, 23˚C WB
21˚C DB, 15˚C WB
27˚C DB
20˚C DB
Outdoor
43˚C DB
-5˚C DB
24˚C DB, 18˚C WB
-5˚C DB, -6˚C WB
Cooling
Heating
Service Ref. PUH-P3VGA/YGA PUH-P4YGA
Cooling
3.34
14.64/5.46
Single, 50Hz, 220-240V/3-ph, 50Hz, 380-415V(4wires)
93/41
NE52VNJM/NE52YDJM
2.5
Propeller (direct) o1
0.07
50(1,770)
49
51
855(33-5/8)
82(181)
3.7(8.2)
15.88(5/8)
Munsell 5Y 8/1
Linear Expansion Valve
Hermetic
Line start
Plate fin coil
38
Reverse cycle
900(35-7/16)
330+20(13+3/4)
R407C
1,600(Ester)MEL56
9.52(3/8)
Flared
Flared
Max. 50m
Max. 50m
Heating
3.52
15.43/5.76
Cooling
3.36
5.49
3-ph, 50Hz, 380-415V(4wires)
45
NE56YDJM
2.7
Propeller (direct) o2
0.07+0.07
85(3,000)
51
53
1,260(49-5/8)
96(212)
4.0(8.8)
19.05(3/4)
Heating
3.54
5.79
Anti-phase protector, thermal relay
Discharge thermo, HP switch
Internal thermostat
HP switch
Discharge thermo
Thermal relay
Discharge thermo, HP switch
Anti-phase protector

7
kW
A
A
kW
kW
K
/min(CFM )
W
dB(A)
dB(A)
mm,(in.)
mm,(in.)
mm,(in.)
kg,(lbs)
kg,(lbs)
cc
mm,(in.)
mm,(in.)
Function
Power supply (phase, cycle, voltage)
Input
Running current
Starting current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Heat exchanger
Fan(drive) oNo.
Fan motor output
Airflow
Crankcase heater
Defrost method
Noise level
Dimensions
Weight
Refrigerant
Charge
Oil (Model)
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
OUTDOOR UNIT
REFRIGERANT PIPING
Cooling
Heating
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
Notes1.Rating Conditions (JIS B8616)
Cooling :Indoor : 27˚C(80˚F)DB. 19˚C (66˚F)WB Outdoor : 35˚C(95˚F)DB. 24˚C (75˚F)WB
Heating :Indoor : 20˚C(68˚F)DB. Outdoor : 7˚C(45˚F)DB. 6˚C (43˚F)WB
Refrigerant piping length (one way) : 5m (16ft)
3. Above deta based on indicated voltage
Indoor Unit 1 phase 240V 50Hz
Outdoor Unit 3 phase 415V 50Hz
2. Guaranteed operating range
Upper limit
Lower limit
Upper limit
Lower limit
Indoor
32˚C DB, 23˚C WB
21˚C DB, 15˚C WB
27˚C DB
20˚C DB
Outdoor
43˚C DB
-5˚C DB
24˚C DB, 18˚C WB
-5˚C DB, -6˚C WB
Cooling
Heating
Service Ref. PUH-P5YGA PUH-P6YGA
Cooling
6.36
10.17 84
HE101YAA
5.1
100(3,530)
55
57
3-ph, 50Hz, 380-415V(4wires)
Munsell 5Y 8/1
Linear Expansion Valve
Hermetic
Line start
Internal thermostat, Anti-phase protector, thermal relay, HP switch, Discharge thermo, LP switch
Plate fin coil
Propeller (direct) o2
0.075+0.075
38
Reverse cycle
1,050(41-5/16)
330+20(13+3/4)
1,260(49-5/8)
122(269)
R407C
5.8(12.8)
2,000(Ester)MEL32
9.52(3/8)
19.05(3/4)
Flared
Flared
Max. 50m
Max. 50m
Heating
6.43
10.28
Cooling
5.25
8.39 79
HE86YAA
4.3
95(3,360)
53
55
Heating
5.47
8.74

8
5 DATA
1. REFILLING REFRIGERANT CHARGE (R407C : kg)
2. COMPRESSOR TECHNICAL DATA
PUH-P1.6VGA
PUH-P2VGA
PUH-P2.5VGA
PUH-P3VGA
PUH-P3YGA
PUH-P4YGA
PUH-P5YGA
PUH-P6YGA
Piping length (one way)
10m 20m 30m 40m 50m Factory
charged w
2.4
2.5
2.7
2.9
2.9
3.4
5.1
5.1
2.5
2.6
2.8
3.1
3.1
3.7
5.4
5.4
2.6
3.1
3.3
3.7
3.7
4.0
5.8
5.8
3.0
3.7
3.9
4.3
4.3
4.7
6.5
6.5
–
–
4.5
4.9
4.9
5.4
7.2
7.2
2.6
3.1
3.3
3.7
3.7
4.0
5.8
5.8
Service Ref.
Compressor model
Winding
Resistance
( ' )
U-V
(R-C)
U-W
(S-C)
W-V
U-V
(R-C)
U-W
(S-C)
W-V
RE277VHSM
Unit
PUH-P1.6VGA
PUH-P2VGA
PUH-P2.5VGA PUH-P3VGA PUH-P3YGA PUH-P4YGA
NE38VMJM NE41VMJM NE52VNJM NE52YDJM NE56YDJM
1.80
3.00
–
0.85
2.15
–
0.79
2.19
–
0.64
1.67
–
3.70
3.70
3.70
3.20
3.20
3.20
Unit
Compressor model
Winding
Resistance
( ' )
PUH-P5YGA PUH-P6YGA
HE86YAA HE101YAA
2.40
2.40
2.40
2.20
2.20
2.20
at 20˚C
at 20˚C

9
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROTIMATE
TERESHOLD OF
REARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
PUH-P1.6VGA COOLING
NOTCH
HEATING
46
SPL(db(A))
48
LINE
3. NOISE CRITERION CURVES
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROTIMATE
TERESHOLD OF
REARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
NOTCH
HEATING
SPL(db(A)) LINE
PUH-P2VGA 48
49
90
80
70
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
APPROTIMATE
TERESHOLD OF
REARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
COOLING
NOTCH
HEATING
SPL(db(A)) LINE
PUH-P2.5VGA 48
50
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROTIMATE
TERESHOLD OF
REARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
NOTCH
HEATING
SPL(db(A)) LINE
49
51
PUH-P3VGA/YGA

10
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROTIMATE
TERESHOLD OF
REARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
NOTCH
HEATING
SPL(db(A)) LINE
53
55
PUH-P5YGA
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROTIMATE
TERESHOLD OF
REARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
NOTCH
HEATING
SPL(db(A)) LINE
55
57
PUH-P6YGA
Ambient temperature 27:
Test conditions are based on JIS Z8731
1m
1m
MICROPHONE
UNIT
GROUND
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROTIMATE
TERESHOLD OF
REARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
NOTCH
HEATING
SPL(db(A)) LINE
51
53
PUH-P4YGA

11
6 OUTLINES AND DIMENSIONS
PUH-P1.6VGA Unit : mm
321
T
SR
w1 234
w1 209
500
Power Supply Wiring Hole (2-[27Knock-Out)
Right Piping Hole (Knock-Out)
Power Supply Wiring Hole (2-[27Knock-Out)
Terminal Connections Left...Power supply Wiring Right..Indoor/Outdoor Wiring
70
70
15515515510930
21585
Bottom Piping Hole (Knock-Out)
Drain Hole (5-[33holes)
18
18
424
900
318 Handle for moving
Earth Point
Service Panel
Front Piping Cover
Rear Piping Cover
1
2
Side Air Intake
200200
53 370 (14)
412
29
330
55
4351
Rear Air Intake
Air Discharge
2-U Shaped notched holes (Foundation Bolt M10)
2-12x40 oval holes (Foundation Bolt M10)
20
28
58
Installation Feet
Rear Air Intake
Side Air Intake
Handle for moving
3
230220220230
637
3030
Rear Trunking Hole (Knock-Out)
< Rear Side >
Power Supply Wiring Hole (2-[27Knock-Out)
40
33
22 55
68 63
65 92 Rear Piping Hole
(Knock-Out)
[92
Piping Knock-Out Hole Details
. . . Refrigerant GAS pipe connection (FLARE) [15.88 (5/8F)
. . . Refrigerant LIQUID pipe connection (FLARE) [9.52 (3/8F) . . . Height of STOP VALAVE connection location.
1 2
Front Trunking Hole (Knock-Out)
< Right Side >< Front Side >
Explanation of Notes
40
68 63
22 55
65
92
33 27 100
50 50
100
33
[92
Front Piping Hole (Knock-Out)
5540
3. . . 3-[3.6 holes (for securing the top of the unit)
These holes are provided for cases where the unit must be secured by the base AND by the top surface. Use Self Tapping screws 5 x L15 or less.(Obtained locally)
w1
Over 10mm
F R E E
Over 500mm
Less than
30mm
FREE SPACE (Around the Unit)
Piping and wiring connections can be made from 4 directions: Front, Right, Rear and Below.
FOUNDATION BOLTS
1
The diagram below shows a basic example. Explanation of particular details are given in the installation manuals etc.
SERVICE SPACE
Dimensions of space needed for service access are shown in the below diagram.
2
Over500
Over500
PIPING-WIRING DIRECTIONS
43
FOUNDATION
<Foundation bolt height>
Please secure the unit firmly with 4 foundation (M10) bolts. (Bolts and washers must be purchased locally).
Service Space
Over 100mm
Over 10mm
Over10
Over100

12
PUH-P2VGA / PUH-P2.5VGA Unit : mm
PUH-P3VGA / PUH-P3YGA
321TSR
w1 395
w1 414
Handle
Rear Air Intake
Side Air Intake
Installation Feet
2-U Shaped notched holes (Foundation Bolt M10)
Side Air Intake
Rear Air Intake
Air Discharge
2-12x40 oval holes (Foundation Bolt M10) Terminal Connections
Left...Power supply Wiring Right..Indoor/Outdoor Wiring
Earth Point
Service Panel
Rear Piping Cover
Front Piping Cover
Bottom Piping Hole (Knock-Out)
Drain Hole (5-[33holes)
Power Supply Wiring Hole (2-[27Knock-Out)
Rear Piping Hole (Knock-Out)
< Rear Side >
Rear Trunking Hole (Knock-Out)
40
33
22 55
68 63
65 92
[92
Piping Knock-Out Hole Details
Front Piping Hole (Knock-Out)
Front Trunking Hole (Knock-Out)
Power Supply Wiring Hole (2-[27Knock-Out) Power Supply Wiring Hole
(2-[27Knock-Out)
< Front Side >
Right Piping Hole (Knock-Out)
< Right Side >
40
68 63
22 55
65
92
33 27 100
50 50
100
33
[92
5540
70
70
15515515510930
21585
18
18
627
442
900
318
Handle
1 2
200500200
53 370 (14)
412
29
330
55
43
51
20
28
58
Handle
3
230220220230
840
3030
...Refrigerant GAS pipe connection (FLARE) [15.88 (5/8F)
...Refrigerant LIQUID pipe connection (FLARE) [9.52 (3/8F)
...Height of STOP VALAVE connection location.
...3-[3.6 holes (for securing the top of the unit) These holes are provided for cases where the unit must be secured by the base AND by the top surface together. Use Self Tapping screws 5 x L15 or less. (Obtained Locally)
Explanation of Notes
1
w1
2 3
Over10
Over100
Over500
Over500
Service Space
Less than
<Foundation bolt height>
30mm
The diagram below shows a basic example. Explanation of particular details are given in the installation manuals etc.
Please secure the unit firmly with 4 foundation (M10) bolts. (Bolts and washers must be purchased locally).
SERVICE SPACE
2
Piping and wiring connections can be made from 4 directions: Front, Right, Rear and Below.
Dimensions of space needed for service access are shown in the below diagram.
FOUNDATION
FOUNDATION BOLTS
3
PIPING-WIRING DIRECTIONS
4
FREE SPACE (Around the Unit)
1
F R E E
Over 10mm
Over 500mm
Over 10mm
Over 100mm

13
W1 392
W1 415
3
Rear Piping Cover
Front Piping Cover
2-U Shaped notched holes (Foundation Bolt M10)
Installation Feet
Rear Air Intake
Side Air Intake
2-12x40 oval holes (Foundation Bolt M10) Terminal Connections
Left...Power supply Wiring Right..Indoor/Outdoor Wiring
[92
92
65
6368
5522
33
40 Rear Trunking Hole
(Knock-Out)
< Rear Side >
Rear Piping Hole (Knock-Out)
Power Supply Wiring Hole (2-[27Knock-Out)
4055
[92
33
100
50
50
100
27
33
92 65
5522 6368
40
< Right Side >
Right Piping Hole (Knock-Out)
< Front Side > Power Supply Wiring Hole
(2-[27Knock-Out)
Power Supply Wiring Hole (2-[27Knock-Out)
Front Trunking Hole (Knock-Out)
Front Piping Hole (Knock-Out)
Piping Knock-Out Hole Details
Drain Hole (5-[33Holes)
Bottom Piping Hole (Knock-Out)
85 215
30 109 155 155 155
70
70 18
18
1 2
Earth Point
598
Handle
Service Panel
318 900
1033
352
33
4351
50
200500200
53 370 (14)
412
29
330
Air Discharge
20
58
28
Handle
Rear Air Intake
Side Air Intake
Handle
230220220
230
1246
3030
PUH-P4YGA Unit : mm
4
PIPING-WIRING DIRECTIONS
3
FOUNDATION BOLTS
FOUNDATION
Piping and wiring connections can be made from 4 directions: Front, Right, Rear and Below.
SERVICE SPACE
Please secure the unit firmly with 4 foundation (M10) bolts. (Bolts and washers must be purchased locally).
30mm
<Foundation bolt height>
Less than
Over500 Over100
Service Space
Over500
1
FREE SPACE (Around the Unit)
Dimensions of space needed for service access are shown in the below diagram.
2
The diagram below shows a basic example. Explanation of particular details are given in the installation manuals etc.
Over10
Over 10mm
F R E E
Over 500mm Over 100mm
Over 10mm
Explanation of Notes
. . . Refrigerant GAS pipe connection(FLARE) [19.05 (3/4F)
. . . Refrigerant LIQUID pipe connection(FLARE) [9.52 (3/8F)
. . . Height of STOP VALAVE connection location.
. . . 3-[3.6 holes (for securing the top of the unit) These holes are provided for cases where the unit must be secured by the base AND by the top surface together. Use Self Tapping screws 5 x L15 or less. (Obtained Locally)
3 2
w1
1

14
PUH-P5YGA / PUH-P6YGA Unit : mm
398
w1 458
w1 434
1033
Earth Point
Terminal Connections Left...Power supply Wiring Right..Indoor/Outdoor Wiring
Handle
Side Air Intake
Rear Air Intake
Handle
Side Air Intake
2-12x40 oval holes (Foundation Bolt M10)
2-U Shaped notched holes (Foundation Bolt M10)
Rear Air Intake
Air Discharge
Handle
Service Panel
Drain Hole (5-[33Holes)
Bottom Piping Hole (Knock-Out)
Rear Piping Cover
Front Piping Cover
[92
92
65
6368
5522
33
40 Rear Trunking Hole
(Knock-Out)
< Rear Side >
Rear Piping Hole (Knock-Out)
Power Supply Wiring Hole (2-[27Knock-Out)
4055
[92
33
100
50
50
100
27
33
92 65
5522 6368
40
< Right Side >
Right Piping Hole (Knock-Out)
< Front Side > Power Supply Wiring Hole
(2-[27Knock-Out)
Power Supply Wiring Hole (2-[27Knock-Out)
Front Trunking Hole (Knock-Out)
Front Piping Hole (Knock-Out)
Piping Knock-Out Hole Details
70 18
1890
14814814817230 109
21585 598
1 2
1050
352
50
225600
53
370 (14)
29
330
20
Installation Feet
4453
58
3230295295230
55
1246
FOUNDATION
30mm
<Foundation bolt height>
Less than
Over500 Over100
Service Space
Over500
Over10
The diagram below shows a basic example. Explanation of particular details are given in the installation manuals etc.
SERVICE SPACE
1
FREE SPACE (Around the Unit)
2 3
FOUNDATION BOLTS
Please secure the unit firmly with 4 foundation (M10) bolts. (Bolts and washers must be purchased locally).
Dimensions of space needed for service access are shown in the below diagram.
4
PIPING-WIRING DIRECTIONS
Piping and wiring connections can be made from 4 directions: Front, Right, Rear and Below.
Over 10mm
F R E E
Over 500mm Over 100mm
Over 10mm
Explanation of Notes
...Refrigerant GAS pipe connection(FLARE) [19.05 (3/4F)
...Refrigerant LIQUID pipe connection(FLARE) [9.52 (3/8F)
...Height of STOP VALAVE connection location.
...3-[3.6 holes (for securing the top of the unit) These holes are provided for cases where the unit must be secured by the base AND by the top surface together. Use Self Tapping screws 5 x L15 or less. (Obtained Locally)
3
2
1
w1

15
7WIRING DIAGRAM
PUH-P1.6 / 2 / 2.5 / 3VGA

16
PUH-P3 / 4 / 5 / 6YGA

17
PUH-P5YGA
PUH-P6YGA
Indoor unit
Outdoor unit
Thermistor
(TH2)
Strainer
Flexible tube Service
port
Accumulator
Ball valve
Strainer
Compressor
Refrigerant pipe
19.05A({3/4")
(with heat insulator)
Refrigerant pipe
9.52A({3/8")
(with heat insulator)
Ball valve
(with service port)
Strainer
4-way valve Service
port
High pressure
protect switch
Thermistor
(TH3)
Capillary tube
(O.D.4.0✕I.D.3.0-R200)✕2pcs
Distributor
with
strainer
Flared
connection
Drier
Strainer
Liner expansion valve
Bypass
valve
Thermistor
(TH5)
Thermistor
(TH1)
Low
pressure
protect
switch
Muffler
Thermistor
(TH4)
Thermistor
(TH6)
Distributor
with
strainer
Strainer
Capillary
tube w1
Refrigerant flow in cooling
Refrigerant flow in heating
w1 : O.D.4.0✕I.D.2.0-R250(PUH-P6YGA)
O.D.4.0✕I.D.2.0-R400(PUH-P5YGA)
8REFRIGERANT SYSTEM DIAGRAM
PUH-P4YGA
Indoor unit
Outdoor unit
thermistor
(TH5)
Strainer
Flexible tube Service
port
Accumulator
Ball valve
Strainer
Compressor
Refrigerant pipe
19.05A({3/4")
(with heat insulator)
Refrigerant pipe
9.52A({3/8")
(with heat insulator)
Ball valve
(with service port)
Strainer
4-way valve
Service
port
High pressure
protect switch
thermistor
(TH3)
Capillary tube
(O.D.4.0✕I.D.3.0-R350)✕2pcs
Distributor
with
strainer
Flared
connection
Refrigerant flow in cooling
Refrigerant flow in heating
Strainer
Liner expansion valae
Drier
thermistor
(TH1)
Indoor coil
thermistor
(TH2)
thermistor
(TH4)
Muffler
thermistor
(TH6)
Distributor
with
strainer
Strainer
PUH-P1.6VGA / PUH-P2VGA / PUH-P2.5VGA
PUH-P3VGA / PUH-P3YGA
Indoor unit Outdoor unit
thermistor
(TH1)
Strainer Flared
connection
Flexible tube Service
port
Accumulator
Ball valve
Strainer
Compressor
Refrigerant pipe
15.88A({5/8")
(with heat insulator)
Refrigerant pipe
9.52A({3/8")
(with heat insulator)
Ball valve
(with service port) Strainer
4-way valve
Service
port
High pressure
protect switch Outdoor heat exchanger
thermistor
(TH3)
Distributor
with
strainer
thermistor
(TH6)
Distributor
with
strainer
Strainer
Drier
Indoor coil
thermistor
(TH2)
thermistor
(TH5)
Muffler
Thermistor(TH4)
Linear expansion valve
Strainer
Refrigerant flow in cooling
Refrigerant flow in heating
<4-way valve solenoid coil>
Heating : ON
Cooling : OFF

18
9 DISASSEMBLY PROCEDURE
OPERATING PROCEDURE PHOTOS
PUH-P5/6YGA
1. Removing the Service panel and Top panel
(1) Remove the 3 service panel fixing screws (5 ✕15) and
slide the hook to remove the service panel.
(2) Remove the screws (3 for front, 2 for rear/5 ✕15) of the
top panel and remove it.
<When the rear screws of the top panel are not possible
to remove>
Remove the 3 front screws (5 ✕15) of the top panel and
lift the front side of the top panel.
Photo 1 Top panel screws Top panel
Service panel
screws
Service panel
Fan guard screws
Fan guard
2. Removing the Fan and Fan motor
(1) Remove the 6 fan guard screws (5 ✕15) to remove it.
(See Photo 1)
(2) Remove the propeller nut (M8) and propeller fan.
(3) Remove the 3 fan motor screws (5 ✕25) to remove the
fan motor.
Fan motor screws
Fan motor
Photo 3
3. Removing the Electric parts box
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the Solenoid valve, Crankcase heater, Pressure
switch<for high pressure>, Pressure switch <for low
pressure>, Piping thermistor, Discharge thermistor,
condenser/evaporator temperature thermistor and 4-way
from the housing on the controller board,then disconnect
the fan motor lead wire from the housing mentioned before
and the condenser lead wire for the fan from the electric
box.
<Diagram symbol in the housing>
Solenoid valve (SV) · Crankcase heater (CH)
Pressure switch <for high pressure> (63H)
Pressure switch <for low pressure> (63L)
Piping thermistor (TH3) · Discharge thermistor (TH4)
Condenser/evaporator temperature thermistor (TH6)
4-way valve (21S4) · Fan motor (MF3, MF4)
(4) Remove the terminal cover and disconnect the compressor
lead wire and inner thermal device terminal.
(5) Remove an electric parts box screw (4 ✕10) and lift the
box to remove it. The electric box cover is hooked at 2
points on the left and 1 point on the right.
Fan guard Electric parts box
Outdoor unit
controller board
Electric parts box
fixing screw
Terminal cover
Cover panel
Cover panel fixing screwCompressor
Photo 2

19
OPERATING PROCEDURE PHOTOS
Photo 4
4. Removing the Piping thermistor, condenser/evaporator
temperature thermistor and Discharge thermistor
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(When the top panel removing is not possible, remove
the electric parts box. Refer to (3).)
wWhen removing piping thermistor and the discharge thermistor,
it unnecessary to remove the top panel. (See Photo 5)
(3) Disconnect the lead wire of the piping thermistor discharge
thermistor and condenser/evaporator temperature
thermistor from the housing (TH3, TH4, TH6) on the
controller board.
(4) Loosen the 1 lead wire clamps on the electric parts box.
(5) Pull out the thermistor from the sensor holder.
5. Removing the solenoid coil
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(When the top panel removing is not possible, remove
the electric parts box. Refer to (3). )
(3) Remove each coil fixing screw (M4 ✕8 for solenoid valve)
and disconnect the lead wire
of the solenoid valve from (SV) on the controller board.
Electric
parts
box
8. Removing the 4-way valve
(1) Remove the service panel. (See Photo 1)
(2) Remove the 4-way coil. (See Photo 5)
Note: When installing the 4-way valve, cover the valve with
a wet cloth to prevent the valve from heating, then
braze it.
6. Removing the solenoid valve
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the solenoid coil. (See Photo 4)
(4) Remove the braze at the intake and outlet of the solenoid
valve.
Note: When installing the solenoid valve, cover the valve
with a wet cloth to prevent the valve from heating, then
weld it.
Photo 5
Clamp
Solenoid coil
fixing screw
Rear panel
Pressure
switch
<Low>
Condenser/evaporator
temperature thermistor
4-way coil
4-way valve
solenoid coil
fixing screw
4-way valve
Pressure
switch
<High>
Solenoid coil
Liquid
thermistor
Discharge
thermistor
7. Removing the 4-way coil
(1) Remove the service panel. (See Photo 1)
(2) Remove each coil fixing screw (M5 ✕6 for 4-way valve)
and disconnect the lead wire of the 4-way valve (21S4)
from the on the controller board.

20
OPERATING PROCEDURE PHOTOS
9. Removing the pressure switch
<Low pressure>
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the electric parts box. (See Photo 3)
(4) Disconnect the lead wire of the pressure switch. (See Photo 4)
(5) Remove the braze part of the pressure switch.
Note : When installing the pressure switch, cover the pressure
switch with a wet cloth to prevent the pressure switch
from heating, then braze it.
<High pressure>
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the electric parts box. (See Photo 3)
(4) Disconnect the lead wire of the pressure switch.
(See Photo 6)
(5) Remove the braze part of the pressure switch.
Note : When installing the pressure switch, cover the pressure
switch with a wet cloth to prevent the pressure switch
from heating, then braze it.
10. Removing the refrigerant capillary tube
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the electric parts box. (See Photo 3)
(4) Remove the 3 rear panel fixing screws (5 ✕15) and
2 valve bed fixing screws on the right side (4 ✕10) to
remove the rear panel. (See Photo 6)
(5) Remove the inter connecting piping (liquid pipe) from
the connecting section.
11. Removing the Bell mouth
(1) Remove the 6 fan guard fixing screws (5 ✕15) to
remove it. (See Photo 1)
(2) Remove the top panel.
(3) Remove a bell mouth fixing screw (5 ✕15) to remove it. Bell mouth fixing screw
Photo 6
Photo 7
Pressure
switch
<High>
Lead wire
Capillary
tube
Valve
bed
fixing
screws