Mitsubishi PUH-8YE, PUH-10YE Service Manual
AIR-COOLED HEAT PUMP TYPE
PACKAGED AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
<Outdoor unit>
Models
PUH-8YE, PUH-10YE
(Single and Twin/Triple)
2000
For use with the R22
Contents
Page
11
1 SAFETY PRECAUTIONS........................................................................................................... 1
11
22
2 SPECIFICATIONS ...................................................................................................................... 3
22
33
3 EXTERNAL DIMENSIONS......................................................................................................... 5
33
44
4 ELECTRICAL WIRING DIAGRAM ............................................................................................. 6
44
[1] Outdoor Unit ........................................................................................................................ 6
[2] Skelton of Indoor/Outdoor Connection ................................................................................ 7
55
5 Technical Data of PUH-8YE/10YE to Meet LVD....................................................................... 8
55
[1] Standard Operation Data..................................................................................................... 8
[2] Cooling Capacity Curves ..................................................................................................... 9
[3] Heating Capacity Curves ..................................................................................................... 9
[4] Capacity Reduction Ratio due to Changes in Piping Length ............................................. 10
[5] Center of Gravity (Outdoor unit) ........................................................................................ 11
[6] NC Curve (Outdoor unit)................................................................................................... 12
66
6 SERVICE DATA ........................................................................................................................ 13
66
[1] Appearance of Equipment ................................................................................................. 13
[2] Refrigerant Circuit.............................................................................................................. 15
[3] Limitation of Refrigerant Piping Length.............................................................................. 15
[4] Refrigerant Piping .............................................................................................................. 16
[5] Refrigerant Charge ............................................................................................................ 16
[6] Operation Rage ................................................................................................................. 16
77
7 CONTROL ................................................................................................................................ 17
77
[1] Composition of Control ...................................................................................................... 17
[2] Control specifications......................................................................................................... 17
[3] Function of switches and connectors (outdoor unit) .......................................................... 21
[4] Simple parts check method ............................................................................................... 25
[5] Reference Data.................................................................................................................. 26
[6] Self-diagnosis and troubleshooting.................................................................................... 27
[7] TEST RUN......................................................................................................................... 32
11
1 SAFETY PRECAUTIONS
11
1. Before installation and electric work
sBefore installing the unit, make sure you read all the “Safety precautions”.
sThe “Safety precautions” provide very important points regarding safety. Make sure you follow them.
Symbols used in the text
Warning:
Describes precautions that should be observed to prevent danger of injury or death to the user.
Caution:
Describes precautions that should be observed to prevent damage to the unit.
Symbols used in the illustrations
: Indicates an action that must be avoided.
: Indicates that important instructions must be followed.
: Indicates a part which must be grounded.
: Beware of electric shock. (This symbol is displayed on the main unit label.) <Color: yellow>
Warning:
Carefully read the labels affixed to the main unit.
Warning:
• Use the specified cables for wiring. Make the connections securely so that the outside force of the cable is not
applied to the terminals.
- Inadequate connection and fastening may generate heat and cause a fire.
• Do not touch the heat exchanger fins.
- Improper handling may result in injury.
• If refrigerant gas leaks during installation work, ventilate the room.
- If the refrigerant gas comes into contact with a flame, poisonous gases will be released.
• Have all electric work done by a licensed electrician according to “Electric Facility Engineering Standard” and
“Interior Wire Regulations”and the instructions given in this manual and always use a special circuit.
- If the power source capacity is inadequate or electric work is performed improperly, electric shock and fire may result.
• Securely install the outdoor unit terminal cover (panel).
- If the terminal cover (panel) is not installed properly, dust or water may enter the outdoor unit and fire or electric shock
may result.
• When installing and moving the air conditioner to another site, do not charge the it with a refrigerant different
from the refrigerant (R407C or R22) specified on the unit.
- If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may
be damaged.
• When moving and reinstalling the air conditioner, consult the dealer or an authorized technician.
- If the air conditioner is installed improperly, water leakage, electric shock, or fire may result.
• Do not reconstruct or change the settings of the protection devices.
- If the pressure switch, thermal switch, or other protection device is shorted and operated forcibly, or parts other than
those specified by Mitsubishi Electric are used, fire or explosion may result.
2. Precautions for devices that use R407C refrigerant
Caution:
• Do not use the existing refrigerant piping.
- The old refrigerant and refrigerator oil in the existing piping contains a large amount of chlorine which may cause the
refrigerator oil of the new unit to deteriorate.
• Use refrigerant piping made of phosphorus deoxidized copper and copper alloy seamless pipes and tubes. In
addition, be sure that the inner and outer surfaces of the pipes are c lean and free of hazardous sulphur, oxides,
dust/dirt, shaving particles, oils, moisture, or any other contaminant.
- Contaminants on the inside of the refrigerant piping may cause the refrigerant residual oil to deteriorate.
• 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.
–1–
• Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flares and flange connections.
- The refrigerator 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 seal 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 refrigerator 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 refrigerator oil to deteriorate.
• Do not use the following tools that are used with conventional refrigerants.
(Gauge manifold, charge hose, gas leak detector, reverse flow check valve, refrigerant charge base, refrigerant
recovery equipment)
- If the conventional refrigerant and refrigerator oil are mixed in the R407C, the refrigerant may deteriorated.
- If water is mixed in the R407C, the refrigerator oil may deteriorate.
- Since R407C does not contain any chlorine, gas leak detectors for conventional refrigerants 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.
3. Electrical work
Caution:
• Ground the unit.
- Do not connect the ground wire to gas or water pipes, lightning rods, or telephone ground lines. Improper grounding ma y
result in electric shock.
• The reverse phase of L lines (L
line can be not be detected.
- The some electric parts should be damaged when power is supplied under the miss wiring.
• Use power line cables of sufficient current carrying capacity and rating.
- Cables that are too small may leak, generate heat, and cause a fire.
• Use only a circuit breaker and fuse of the specified capacity.
- A fuse or circuit breaker of a larger capacity or a steel or copper wire may result in a general unit failure or fire.
• Do not wash the air conditioner units.
- Washing them may cause an electric shock.
1, L2, L 3) can be detected (Error cord: F8), but the reverse phase of L lines and N
4. Before starting the test run
Caution:
• Turn on the power at least 12 hours before starting operation.
- Star ting operation immediately after turning on the main power switch can result in severe damage to internal parts.
Keep the power switch turned on during the operational season.
• Do not touch the switches with wet fingers.
- Touching a switch with wet fingers can cause electric shock.
• Do not touch the refrigerant pipes during and immediately after operation.
- During and immediately after operation, the refrigerant pipes are may be hot and may be cold, depending on the
condition of the refrigerant flowing through the refrigerant piping, compressor, and other refrigerant cycle parts. Your
hands may suffer burns or frostbite if you touch the refrigerant pipes.
• Do not operate the air conditioner with the panels and guards removed.
- Rotating, hot, or high-voltage parts can cause injuries.
• Do not turn off the power immediately after stopping operation.
- Always wait at least five minutes before turning off the power. Otherwise, water leakage and trouble may occur.
Note:
1. The total capacity of connected indoor unit models represents the total sum of the figures expressed in the
indoor model name.
2. Combinations in which the total capacity of the connected indoor units exceeds the capacity of the outdoor unit
will reduce the capacity of each indoor unit below the rated capacity during simultaneous operation. Theref ore,
if circumstances allows, combine indoor units within the capacity of the outdoor unit.
–2–
22
2 SPECIFICATIONS
22
Specifications of air-source heat pump type packaged air conditioner
(Outdoor unit)
Model name PUH-8YE Quantity
Cooling Heating
Capacity
Power source
Power input kW
Current A
Type x Quantity
Fan Airflow rate m3/min
Motor output kW
Type
Compressor Motor output kW
Crankcase heater kW
Refrigerant/Lubricant
External finish
External dimension mm
Protection
device
High pressure protection MPa
Compressor/Fan
kcal/h
kW
18,000 19,000
20.9 22.1
3N~ 380/400/415 V 50 Hz
7.62 7.17
13.5/13.6/13.7 12.3/12.4/12.5
Propeller fan × 1
185
0.38
Hermetic
5.5
0.05 (240 V)
R22/MS32(N-1)
Steel plate paintingwith polyester powder
(MUNSELL 5Y8/1 or similar)
1,715(H) × 990(W) × 840(L)
2.94
Overcurrent protection/Thermal switch
Refrigerant piping diameter Liquid/Gas mm
Indoor unit
Noise level dB (A)
Net weight kg
Operating temperature range
1. Cooling/Heating capacity indicates the maximum value at operation under the following condition.
Cooling Indoor: 27 °CDB/19 °CWB Outdoor: 35
Notes:
Heating Indoor: 20 °CDB Outdoor: 7
Pipe length: 7.5 m Height difference: 0 m
2. Works not included: Installation/Foundation work, Electrical connection work, Duct work, Insulation
work, Power source switch, and other items not specified in this specifications.
ø12.7 Flare / ø25.4 Flange
PEH-8YD
56
205
Indoor: 15 °CWB~24 °CWB Indoor: 15°CDB~27 °CDB
Outdoor: –5 °CDB~46 °CDB
Outdoor: –12 °CWB~15.5 °CWB
°
CDB
°
CDB/6 °CWB
–3–
Specifications of air-source heat pump type packaged air conditioner
(Outdoor unit)
Model name PUH-10YE Quantity
Cooling Heating
Capacity
Power source
Power input kW
Current A
Type x Quantity
Fan Airflow rate m3/min
Motor output kW
Type
Compressor Motor output kW
Crankcase heater kW
Refrigerant/Lubricant
External finish
External dimension mm
Protection
device
High pressure protection MPa
Compressor/Fan
kcal/h
kW
22,400 24,400
26.0 28.4
3N~ 380/400/415 V 50 Hz
9.47 8.30
16.8/16.9/17.0 14.8/14.9/15.0
Propeller fan × 1
185
0.38
Hermetic
7.5
0.06 (240 V)
R22/MS-32(N-1)
Steel plate painting with polyester powder
(MUNSELL 5Y8/1 or similar)
1,715(H) × 990(W) × 840(L)
2.94
Overcurrent protection/Thermal switch
Refrigerant piping diameter Liquid/Gas mm
Indoor unit
Noise level dB (A)
Net weight kg
Operating temperature range
1. Cooling/Heating capacity indicates the maximum value at operation under the following condition.
Cooling Indoor: 27 °CDB/19 °CWB Outdoor: 35 °CDB
Notes:
Heating Indoor: 20 °CDB Outdoor: 7 °CDB/6 °CWB
Pipe length: 7.5 m Height difference: 0 m
2. Works not included: Installation/Foundation work, Electrical connection work, Duct work, Insulation
work, Power source switch,and other items not specified in this specifications.
ø15.88 Flare / ø28.58 Flange
PEH-10YD
57
225
Indoor: 15 °CWB~24 °CWB Indoor: 15 °CDB~27 °CDB
Outdoor: –5 °CDB~46 °CDB
Outdoor: –12 °CWB~15.5 °CWB
–4–
33
3 EXTERNAL DIMENSIONS
33
• Models PUH-8YE/10YE
1 pc.
1 pc.
·
···········
·················
(The connecting pipe is fixed with the unit)
(Attached near the ball valve)
< Accessory >
• Refrigerant (gas) conn. pipe
• Packing for conn. pipe
each 1pc.
4 pcs.
Air outlet
················
,
·························
27
ø
33,
ø
40,
(Painted the same color as the unit body)
ø
• Conduit mouting plate
• Tapping screw 4 ✕ 10
Note Please leave a space under the outdoor unit
910
840
of the bottom plate by the basement)
for the piping When you connect the piping
from the bottom.
(Please be careful not to close the hole
15 880 15
215
225
Unit: mm
Air
inlet
Right side view
Air
inlet
1715
1490
X
Service panel
560
990
Plane view
215
A
12.7
15.88
Oval hole
4 ✕ 2 - 14 ✕ 20
Y
Y
Knockout hole
MOOEL
PUH-8YE
PUH-10YE
X
Refrig. service
valve (liquid)
øA<flare>
40 Knockout hole
7560
ø
<Left side hole for
the power supply>
40
Knockout hole
Front piping hole
83
79
70
149
Refrig. service
194
48 100
16531
valve (gas)
<flange>
4080
Knockout hole
Left piping hole
Left side view
Front view
Cross section X-X
27 Knockout hole
<Left side hole for
the control wiring>
ø
25 160
73 80
198
Note1
Knockout hole
Bottom piping hole
50
237
25.4<brazed>
28.58<brazed>
ø
ø
8 :
10 :
Conn. pipe
251100
234
Rear view
12 5
Knockout hole
Crosss section Y-Y
–5–
44
4 ELECTRICAL WIRING DIAGRAM
44
[1] Outdoor Unit
• Models PUH-8YE/10YE
MC
Black
Red
White
51C
52C
Black
White
Red
(3P)
F.C.
BOARD
CNOUT1
(5P)
1
3
5
7
CNIN
(7P)
Blue
MF
1
3
4
1
1
53
CNFAN
(5P)
CNFC2
(6P)
CNPOW
(5P)
3115
F10
F20
F30
N.F.BOARD
Green/Yellow
(1P)
(4P)
1
6
3
CNOUT2
(3P)
49C
51C
63H1
52C
CH
Unit body
52C
21S4
SV1
L1
N
L2
L3
1
3
1
3
1
3
1
3
5
1
3
1
3
1
5
1
6
7
1
CN23
CN22
CN21
CN26
CN25
CN53
CN52
CNFC1
CN20
F01
F04
F02
F03
(3P)
(3P)
(3P)
(5P)
(3P)
(3P)
(6P)
(7P)
(6P)
TH1
TH2
121
CNVMNT
CNMNT
(3P)
(5P)
(6P)
ON
OFF
4
1
SW5
LED1
SW3
ON
OFF
1
SW4
CN28
(3P)
TR
2
X04
X03
X01
X02
X05
CNFG
(3P)
3
1
CN2
(2P)
ON
OFF
1
SW1
ON
OFF
1
SW2
DC power supply
CN34
(3P)
3
1
2
CN3 CN4CN40
(2P)(2P)
CN3D
(3P)
CN3S
(3P)
CN3N
(3P)
6
CN24
(3P)
CN27
(3P)
6
CN81
(3P)
CN51
(5P)
3
1
63H2
3
1
3
1
TB1
NOTE SW5-4 IS OFF IN CASE OF PUH-8YE.
SW5-4 IS ON IN CASE OF PUH-10YE.
L1 L2 L3
L1 L2 L3
Power source
3N~
380/400/415 V
50 Hz
ON
ON
OFF
OFF
1
1
SW5
N
N
4
4
PUH-8YE
TB3
23
1
To indoor unit
ON
ON
OFF
OFF
1
44
1
SW5
PUH-10YE
Note:
1. Be sure to apply earth work to the unit. (Use the earth terminal of TB1.)
Controller Box
Symbol Explanation
Symbol Name
F01~F04
F10~F30
51C
52C
63H1
63H2
TR
MC
MF
CH
X01~X05
SW1~5
21S4
SV1
TH1
TH2
TB1
TB3
49C
FUSE (6.3A 250VAC CLASS F)
FUSE (6.3A 250VAC CLASS F)
OVER CURRENT RELAY
MAGNETIC CONTACTOR (COMPRESSOR)
PRESSURE SWITCH (HIGH PRESSURE)
PRESSURE SWITCH (FOR CONTROL)
TRANSFORMER
ELECTRIC MOTOR OF COMPRESSOR
FAN MOTOR (HEAT EXCHANGER)
CRANK CASE HEATER (COMPRESSOR)
RELAY
SWITCH
4-WA Y VAL VE
SORENOID VALVE
THERMISTOR
LIQUID TEMP
DISCHARGE TEMP
POWER SOURCE TERMINAL BLOCK
INDOOR/OUTDOOR CONNECTION TERMINAL
BLOCK
THERMAL SWITCH (COMPRESSOR)
EARTH TERMINAL
–6–
[2] Skelton of Indoor/Outdoor Connection
(1) Multiple systems combination chart
PUH-8YE PUH-10YE
PEH-8YD
PLH-1.6, 2, 2.5KK(H)B
PLH-3AK(H), PLH-4AK(H)S
PKH-1.6, 2, 2.5, 3FK(H)A, PKH-4FK(H)SA
PCH-2, 2.5, 3GK(H)A, PCH-4GK(H)SA
PEH-2.5, 3, EKHA, PEH-4EKHSA
PEHD-1.6, 2, 2.5, 3EK(H)A, PEHD-4EK(H)SA
PEH-10YD
PLH-2, 2.5KK(H)B
PLH-3AK(H), PLH-4, 5AK(H)S
PKH-2, 2.5, 3FK(H)A, PKH-4FK(H)SA
PCH-2, 2.5, 3GK(H)A, PCH-4, 5GK(H)SA
PEH-2.5, 3EKHA, PEH-4, 5EKHSA
PEHD-2, 2.5, 3EK(H)A, PEHD-4, 5EK(H)SA
Single Twin Triple Single Twin Triple
Model Ratio Model Ratio Model Model Ratio Model Ratio Model
33:33:33 2.5+2.5+2.5 33:33:33 3+3+3
Systems Indoor units
8 50:50 4+4 25:25:50 2+2+4 10 50:50 5+5 25:25:50 2.5+2.5+5
20:40:40 1.6+3+3 20:40:40 2+4+4
(2) Multiple-distributor pipes (option)
Twin Triple
Ratio of indoor units 50:50 33:33:33 25:25:50 20:40:40
Multiple-distributor SDD-50WJ-E SDT-111J-E SDT-112J-E SDT-122J-E
(3) System
Single
3-core cable (DC12V)
Outdoor unit
Pipe work
Indoor unit
Transmission line
Remote
controller
Twin Triple
Indoor units
No. 1 No. 2
3-core cable (DC12V)
Remote
controller
Distributor
Transmission
line
3-core cable (DC12V)
Indoor units
No. 1 No. 2 No.3
Remote
controller
Distributor
Transmission
line
Outdoor unit
Pipe work
–7–
Outdoor unit
Pipe work
55
5 Technical Data of PUH-8YE/10YE to Meet LVD
55
[1] Standard Operation Data
1 PUH-8YE
Operating condition Cooling Heating
Voltage V
Power source frequency Hz
Indoor air condition (DB/WB) °C
Outdoor air condition (DB/WB) °C
Piping length m
Operating condition
Refrigerant charge kg
Current A
Outdoor unit
Indoor unit
Electrical characteristics
Discharge pressure MPa
Suction pressure MPa
Discharge refrigerant temperature °C
Suction refrigerant temperature °C
Liquid pipe temperature
Refrigerant circuit
Compressor shell bottom temperature °C
Input kW
Compressor current A
Fan current A
Current A
Input kW
(at piping sensor)
°C
380 400 415 380 400 415
50 50 50 50 50 50
27/19 27/19 27/19 20/– 20/– 20/–
35/- 35/– 35/– 7/6 7/6 7/6
7.5 7.5 7.5 7.5 7.5 7.5
7.4 7.4 7.4 7.4 7.4 7.4
13.5 13.6 13.7 12.3 12.4 12.5
7.62 7.62 7.62 6.91 6.91 6.91
12.4 12.5 12.6 11.2 11.3 11.4
1.1 1.1 1.1 1.1 1.1 1.1
1.12 1.12 1.12 1.12 1.12 1.12
0.65 0.65 0.65 0.65 0.65 0.65
1.99 1.99 1.99 1.59 1.59 1.59
0.49 0.49 0.49 0.35 0.35 0.35
85 85 85 75 75 75
777–2–2–2
46 46 46 5 5 5
50 50 50 35 35 35
Note: The values listed above indicate that when connected with the indoor unit PEH-8YD as representative data.
2 PUH-10YE
Operating condition Cooling Heating
Voltage V
Power source frequency Hz
Indoor air condition (DB/WB) °C
Outdoor air condition (DB/WB) °C
Piping length m
Operating condition
Refrigerant charge kg
Current A
Outdoor unit
Indoor unit
Electrical characteristics
Discharge pressure MPa
Suction pressure MPa
Discharge refrigerant temperature °C
Suction refrigerant temperature °C
Liquid pipe temperature
Refrigerant circuit
Compressor shell bottom temperature °C
Input kW
Compressor current A
Fan current A
Current A
Input kW
(at piping sensor)
°C
380 400 415 380 400 415
50 50 50 50 50 50
27/19 27/19 27/19 20/– 20/– 20/–
35/- 35/– 35/– 7/6 7/6 7/6
7.5 7.5 7.5 7.5 7.5 7.5
7.6 7.6 7.6 7.6 7.6 7.6
16.8 16.9 17.0 14.8 14.9 15.0
9.47 9.47 9.47 8.30 8.30 8.30
15.7 15.8 15.9 13.7 13.8 13.9
1.1 1.1 1.1 1.1 1.1 1.1
1.64 1.64 1.64 1.64 1.64 1.64
0.94 0.94 0.94 0.94 0.94 0.94
2.03 2.03 2.03 1.57 1.57 1.57
0.48 0.48 0.48 0.34 0.34 0.34
95 95 95 80 80 80
888–2–2–2
47 47 47 6 6 6
60 60 60 40 40 40
Note: The values listed above indicate that when connected with the indoor unit PEH-10YD as representative data.
–8–
[2] Cooling Capacity Curves
• PUH-8YE/10YE
1.4
I
n
d
o
o
r
i
n
l
e
t
a
i
r
w
e
t
b
u
l
b
t
e
1.2
m
p
.
1.22
<
°
C
W
B
>
1.1
22
20
18
16
1
Capacity ratio
0.8
0.6
-5-3-113579111315171921232527293133353739414345
Outdoor air temp. <°CDB>
[3] Heating Capacity Curves
• PUH-8YE/10YE
1.4
1.2
>
B
D
C
°
<
e
r
u
t
a
r
e
p
m
e
t
b
l
u
b
y
r
Capacity ratio
0.8
1
d
r
i
a
t
e
l
n
i
r
o
o
d
n
I
22
20
18
16
15
20
25
Input ratio
0.9
i
a
t
e
l
n
i
r
o
o
d
n
I
0.7
-5-3-113579111315171921232527293133353739414345
Outdoor air temp. <°CDB>
1.4
1.2
1
Input ratio
0.8
Indoor inlet air dry bulb temperature <°CDB>
e
t
b
l
u
b
t
e
w
r
>
B
W
C
°
<
.
p
m
25
20
15
0.6
-12-10-8-6-4-202468101214
Outdoor air temperature <°CWB>
15.5
–9–
0.6
-12-10-8-6-4-202468101214
Outdoor air temperature <°CWB>
15.5
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