Mitsubishi Electric PUHY-P250YHM-A Product guide

Model PUHY-P250YHM-A
PFD-P250VM-E
PFD-P500VM-E
DATA BOOK
AIR CONDITIONERS

CONTENTS
1. Specifications
1-1 Main Features
1-2
List of Possible Combinations of Indoor and Outdoor Units
1-3 Unit Specifications
2. Capacity Curves
2-1 Cooling Capacity
2-2 Cooling Input
2-3 Part Load Performance
2-4 SHF Curves
2-5 Correction by refrigerant piping length
2-6 Operation limit
3. Sound Levels
3-1 Noise Level
3-2 NC Curves
3-3 Fan Characteristics Curves
4. External Dimensions
5. Electrical Wiring Diagrams
6. Refrigerant Circuit Diagram And Thermal Sensor
7. System Design
7-1 Refrigerant Piping System
7-2 Control Wiring
7-3 Types of switch settings and setting methods
7-4 Sample System Connection
7-5 External input/output specifications
7-6 System Rotation Control
7-7 Notes on the use of optional accessories
8. Air Conditioning the Computer Room
8-1 Main Features of the Floor-Duct Air Conditioners
8-2 Features of air-conditioner for computer room
8-3
Step-by-Step Plan for the Implementation of the Air-Conditioning
8-4 Conditions for the Installation of Computer-Room Air Conditioners
8-5 Setting the Air conditioners
8-6 Automatic Control of the Computer Room
9. Maintenance/Inspection
9-1 Maintenance/Inspection Schedule
1
1
2
3
4
4
4
5
6
8
8
9
9
10
11
12
15
18
20
20
21
22
24
29
34
34
35
35
35
36
37
38
40
41
41
Close control PUHY-P-YHM-A
PFD-P-VM-E
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1. Specifications
1-1.Main Features
1
(1) List of Models
<10HP System>
<20HP System>
PUHY-P250YHM-A
10HP(Down flow): PFD-P250VM-E
20HP(Down flow): PFD-P500VM-E
✻PFD-type indoor units cannot be connected to outdoor units other than the ones specified above.
✻PFD-type indoor units and other types of indoor units cannot coexist in the same refrigerant system.
✻It is necessary to change pulley and V-belt when using it by the power supply frequency 60Hz.
✻For restrictions when the PFD-type indoor units are connected (related to the system), see P20.
When using a PFD-P250VM-E as an indoor unit, connect an outdoor unit PUHY-P250YHM-A to each
indoor unit and operate with a built-in remote control for the indoor unit.
✻1: Bold line indicates refrigerant piping (gas/liquid). This system consists of single refrigerant circuit.
✻2: Indicates TB3-type transmission line that connects the indoor and outdoor units.
This system consists of single refrigerant circuit.
✻3: Indicates TB7-Type transmission line that allows the unit to communicate with the controller.
Outdoor Unit
} Indoor Unit
Outdoor Unit
G-50A PUHY-P250YHM-A
Indoor Unit
PFD-P250VM-E
TB7 TB3 ✻2✻3
✻1
12V DC
M-NET
PAC-SC50KUA
UP
POWERRATING
MODEL
WEIGHT
SERIALNo. 2.11kg
POWERSUPPLYUNIT
MITSUBISHIELECTRICCORPORATION
PAC-SC50KUA
When using a PFD-P500VM-E as an indoor unit, connect 2 PUHY-P250YHM-A outdoor units to
each indoor unit and operate with a built-in remote control for the indoor unit.
At factory shipment, this model of indoor unit is designed and set to accommodate a single refriger-
ant circuit.
Connection of two refrigerant circuits to the indoor unit requires setting change and pipe work.
✻1: Bold line indicates refrigerant piping (gas/liquid). This system consists of two refrigerant circuits.
✻2: Indicates TB3-type transmission line that connects the indoor and outdoor units.
This system consists of two refrigerant circuits.
✻3: Indicates TB7-type transmission line that allows the unit to communicate with the controller.
Outdoor Unit
PUHY-P250YHM-A
Indoor Unit
PFD-P500VM-E
TB7 TB3 ✻2
✻1
TB3
PUHY-P250YHM-A
TB7
✻3
G-50A
12V DC
M-NET
PAC-SC50KUA
UP
POWERRATING
MODEL
WEIGHT
SERIALNo. 2.11kg
POWERSUPPLYUNIT
MITSUBISHIELECTRICCORPORATION
PAC-SC50KUA
Two refrigerant circuits

2
1-2. List of Possible Combinations of Indoor and Outdoor Units
✻1: Refer to the following pages for detailed specifications of each unit.
✻2:They were measured at operation under the following conditions:
<Cooling> Indoor:27˚CDB/19˚CWB Outdoor:35˚CDB
<Heating> Indoor:20˚CDB Outdoor: 7˚CDB/6˚CWB
Pipe length:7.5m, Height difference:0m
Model Name Indoor unit
Outdoor unit Cooling Heating
System capacity kW 28.0 31.5
System Power input kW 9.3 9.1
System current A 16.7/15.9/15.4 16.4/15.5/15.1
10HP system
PFD-P250VM-E
PUHY-P250YHM-A Cooling Heating
56.0 63.0
18.6 18.2
32.3/30.8/29.7 31.7/30.0/29.1
20HP system
PFD-P500VM-E
PUHY-P250YHM-A x 2

(2) Indoor Unit
3
1-3. Unit Specifications
28.0 31.5
3N ~ 380/400/415V 50/60Hz
Capacity
Model name
kW
Power source
✻1
✻2
kW
A
m3/min
kW
kW
kW
mm
dB(A)
kg
Power input
Current
Fan Airflow rate
Type ✕Quantity
Motor output
Type
Motor output
Crankcase heater
Compressor
Refrigerant / Lubricant
External finish
High pressure protection
Inverter circuit (COMP./FAN)
Compressor
Fan
External dimension HxWxD
Protection
devices
Refrigerant
piping diameter High press. pipe
Low press. pipe
Noise level
Net weight
1,710 (without legs 1,650) x 920 x 760
Propeller fan x 1
185
0.46
Hermetic
6.7
0.035 x 1
R410A/MEL32
Heat exchanger Salt resistant fin
Over-heat protection, Over current protection
ø9.52 Brazed (ø12.7 for over 90m)
ø22.2 Brazed
Pre-coated galvanized steel sheets (+ powder coating for -BS type) <MUNSEL 5Y 8/1 or similar>
High pres. Sensor & High pres. Switch at 4.15MPa
200
6.66.8 11.1/10.5/10.211.4/10.9/10.5
PUHY-P250YHM-A (-BS)
connected with PFD series
Over heat protection
Thermal switch
57
Cooling Heating
Note: *1. Cooling/Heating capacity indicates the maximum value at operation under the following condition.
*2. It is measured in anechoic room.
** Installation/foundation work, electrical connection work, duct work, insulation work, power source switch,
and other items shall be referred to the Installation Manual.
Indoor : 27˚CDB / 19˚CWB
Indoor : 20˚CDB
Pipe length : 7.5m
Outdoor :
Outdoor :
Height difference : 0m
35˚CDB
7˚CDB/ 6˚CWB
<Cooling>
<Heating>
3N~380/400/415V(50Hz), 400/415V(60Hz)
PFD-P500VM-E
5.0
Power source kW
-
Power input
System capacity
A
m3/min
Pa
kg
dB(A)
m
mm
Current
Heat exchanger
Fan
Refrigerant
External finish
Type x Quantity
Airflow rate
External static pressure
kW
Motor Output
Air filter
Refrigerant
piping diameter
✻2
Refrigerant piping allowable length
Gas pipe
Liquid pipe
Cross fin (Aluminum plate fin and copper tube)
Sirocco fan x 2Sirocco fan x 1
ø 9.52 Brazed (ø 12.7 for over 90m)
ø 22.2 Brazed
Single refrigerant
circuit
Two refrigerant
circuit
320
1,950 x 1,380 x 780
9.5/9.0/8.7
PFD-P250VM-E
2.5
kW 28.0 31.5 56.0 63.0
5.3/5.0/4.9
160 120120 4.42.2
380
59
150
Gas pipe
Liquid pipe ø 15.88 Brazed
ø 28.58 Brazed
Gas pipe
Liquid pipe ø 9.52 Brazed (ø 12.7 for over 90m)
ø 22.2 Brazed
520
63
150
R410A
Galvanized steel plate (with polyester coating)
<MUNSEL 2.9GY 8.6/0.3(White) 7.2GB 3.2/5.3(Blue) or similar>
PP Honeycomb fabric (washable)
Thermal switch 1,950 x 1,980 x 780
Protection devices (Fan)
External dimensions
HxWxD
Model name
Noise level
Net weight
Cooling Heating ✻1✻1Cooling Heating
Note: *1. Heating can be used only by the indoor warming-up.
*2. At factory shipment, this model of indoor unit is designed and set to accommodate a single refrigerant circuit.
Connection of two refrigerant circuits to the indoor unit requires setting change and pipe work.
** Installation/foundation work, electric connection work, duct work, insulation work, power source switch and other items are
not specified in the specifications.
(1) Outdoor Unit

4
2. Capacity Curves
2-1. Cooling Capacity
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
-15 -10 -5 0 5 10 15 20 25 30 35 40 45
Indoor unit inlet temperature (˚CWB)
Indoor unit inlet temperature (˚CWB)
19
15
12
24
0.7
0.8
0.9
1.0
1.1
1.2
1.3
19
24
15
12
-15 -10 -5 0 5 10 15 20 25 30 35 40 45
Capacity correction coefficientInput Correction Coefficient
Outdoor unit inlet temperature (˚CDB)
Outdoor unit inlet temperature (˚CDB)
2-2. Cooling Input
✻The correction curves indicate the values measured at the point where the compressor was
operated at its maximum capacity.
✻indicates the standard value.

2-3. Part Load Performance
5
10HP System
Indoor Unit : PFD-P250VM-E
Outdoor Unit : PUHY-P250YHM-A
Cooling
Capacity (kW) 100% Capacity 90% Capacity 80% Capacity 70% Capacity 60% Capacity 50% Capacity 40% Capacity
40 ˚C 26.6 10.05 8.75 7.68 6.79 6.08 5.50 5.04
35 ˚C 28.0 9.30 8.11 7.18 6.41 5.82 5.13 4.60
30 ˚C 29.4 8.65 7.61 6.81 6.17 5.50 4.94 4.52
25 ˚C 30.2 8.10 7.21 6.56 6.00 5.38 4.89 4.50
20 ˚C 31.1 7.72 6.92 6.26 5.74 5.27 4.85 4.47
15 ˚C 31.6 7.54 6.87 6.31 5.80 5.35 4.94 4.56
* Indoor air temperature condition: 27˚CDB/19˚CWB
20HP System
Indoor Unit : PFD-P500VM-E
Outdoor Unit : PUHY-P250YHM-A
✕ 2
Cooling
Capacity (kW) 100% Capacity 90% Capacity 80% Capacity 70% Capacity 60% Capacity 50% Capacity 40% Capacity 30% Capacity
40 ˚C 53.2 20.09 17.46 15.24 13.49 12.08 10.94 10.07 8.37
35 ˚C 56.0 18.60 16.19 14.30 12.77 11.51 10.11 9.05 8.06
30 ˚C 58.8 17.30 15.24 13.58 12.24 10.79 9.76 8.92 7.68
25 ˚C 60.5 16.19 14.47 13.06 11.79 10.59 9.67 8.79 7.55
20 ˚C 62.2 15.44 13.88 12.53 11.42 10.48 9.64 8.52 7.49
15 ˚C 63.3 15.07 13.83 12.63 11.58 10.67 9.84 8.62 7.64
* Indoor air temperature condition: 27˚CDB/19˚CWB
Outdoor unit inlet
temp. (˚CDB)
System Power input (kW)
Outdoor unit inlet
temp. (˚CDB)
System Power input (kW)

6
2-4. SHF Curves
Operation Temparature Range: Indoor : 12˚CWB~24˚CWB
Outdoor: -15˚CDB~43˚CDB
(RH : 30~80%)
Standard Point " " : Indoor : 27˚CDB/19˚CWB
Outdoor: 35˚CDB/-
0.4
0.5
0.6
0.7
0.8
0.9
1
30 40 50 60 70 80
RH (%)
SHF
130% 120%110%100% 90% 80% 70%
Standard Capacity Ratio
Standard Capacity Ratio
0.93
0.4
0.5
0.6
0.7
0.8
0.9
1
30 40 50 60 70 80
RH (%)
SHF
130% 120%110%100% 90% 80% 70%
35 45 55 65 75
Indoor Temperature 27˚CDB
35 45 55 65 75
Indoor Temperature 24˚CDB

7
Operation Temparature Range: Indoor: 12˚CWB~24˚CWB
Outdoor: -15˚CDB~43˚CDB
(RH: 30~80%)
0.4
0.5
0.6
0.7
0.8
0.9
1
30 40 50 60 70 80
RH (%)
SHF
120%110% 100% 90% 80% 70%
Standard Capacity Ratio
Standard Capacity Ratio
0.4
0.5
0.6
0.7
0.8
0.9
1
30 40 50 60 70 80
RH (%)
SHF
120% 110%100% 90% 80% 70%
35 45 55 65 75
Indoor Temperature 22˚CDB
35 45 55 65 75
Indoor Temperature 20˚CDB

8
2-5. Correction by refrigerant piping length
To obtain a decrease in cooling/heating capacity due to refrigerant piping extension, multiply by the capacity
correction factor based on the refrigerant piping equivalent length in the table below.
• Cooling
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.50 ✕number of bent on the piping)m
• How to obtain piping equivalent length
Piping equivalent length (m)
Capacity correction coefficient
0.7
0.8
0.9
1
020406080100 120 140 160 180
2-6. Operation limit
Indoor temperature (˚CWB)
-15 0-5-10 5 10 15202530354045
10
12
15
20
25
30
* The height between the Outdoor PUHY-P-YHM-A and Indoor could make the running
temperature range narrow. For details refer to P19, 7-1 Refrigerant Piping System.
Outdoor temperature (˚CDB)
• Heating
Outdoor temperature (˚CWB)
Indoor temperature (˚CDB)
30
25
20
15
10
5-20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50

9
3. Sound Levels
3-1. Noise Level
1m
1m
Measurement
location
Series Noise Level
(dB [Type A])
PFD-P250VM-E 59
PFD-P500VM-E 63
(1) Outdoor Unit
(2) Indoor Unit
Measurement
location
1m
1m
Series Noise Level
(dB [Type A])
PUHY-P250YHM-A 57

10
3-2. NC Curves
PUHY-P250YHM-A
PFD-P250VM-E (External static
pressure 120Pa) PFD-P500VM-E (External static pressure 120Pa)
63Hz 125Hz 250Hz 500Hz 2000Hz1000Hz 4000Hz 8000Hz dB(A)
82.8 70.5 65.6 57,0 55.1 51.1 44.7 37.9 63
(External static
pressure 0Pa)
63Hz 125Hz 250Hz 500Hz 2000Hz1000Hz 4000Hz 8000Hz dB(A)
70.6 62.7 60.5 56.1 54.8 45.7 39.7 32.9 59
63Hz 125Hz 250Hz 500Hz 2000Hz1000Hz 4000Hz 8000Hz dB(A)
10
20
30
40
50
60
70
80
90
63Hz 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz
10
20
30
40
50
60
70
80
90
63Hz 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz
10
20
30
40
50
60
70
80
90
63Hz 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20µPa
OCTAVE BAND CENTER FREQUENCIES (Hz)
OCTAVE BAND SOUND LEVEL (dB)
OCTAVE BAND CENTER FREQUENCIES (Hz)
OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20µPa
OCTAVE BAND CENTER FREQUENCIES (Hz)
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
Approximate minimum
audible limit on
continuous noise
Standard 35.0 57.0
NightMode 44.0
When Night Mode is set,the A/C system's capacity is limited. The system could return to normal
operation from Nig ht Mode automaticall in the case that the operation condition is severe.
50/60Hz
50/60Hz 59.0 62.0 60.0 54.0 50.5 46.0 41.0 24.5
58.0 53.5 44.0 39.0 36.5 32.5 31.0
Standard 50/60Hz
Night Mode 50/60Hz

11
3-3. Fan Characteristics Curves
PFD-P250VM-E
PFD-P500VM-E
: 50/60Hz, standard
: 50/60Hz, standard
0
100
200
300
400
500
600
700
800
900
1000
130 140 150 160 170 180 190
)aP(erusserpcitatslatoT
Fan rotation speed
Internal
resistance
1200rpm
1100rpm
1000rpm
900rpm
800rpm
Output 3.7kW
136 184
Air volume (m
3
/min)
Air volume (m
3
/min)
✻Pulley andV-belt is procured on site.
✻Pulley andV-belt is procured on site.
290 310 330 350
318 345
250
0
100
200
300
400
500
600
700
800
270
)aP(erusserpcitatslatoT
272
800rpm
800rpm
Internal resistance
Fan rotationspeed
Output 5.5kW
StandardStandard
1000rpm
1100rpm
1000rpm
900rpm
900rpm
1
2
3
4
5
6
7
8
9
3
4
5
6
7
8
9
2
6
No.
3
4
5
6
7
8
9
No.
1
3
4
5
7
8
9
1170
1140
1080
1040
973
930
845
797
748
Rotational
speed
(rpm)
1135
1070
1015
978
905
850
803
Rotational
speed
(rpm)
ø315-B-2-42
ø315-B-2-42
ø250-B-2-42
ø250-B-2-42
ø280-B-2-42
50Hz
Motor pulley Fan pulley
ø170-B-2-38
ø180-B-2-38
ø170-B-2-38
ø180-B-2-38
ø180-B-2-38
ø160-B-2-38
ø170-B-2-38
ø236-B-2-42
ø250-B-2-42
50Hz
Motor pulley Fan pulley
ø160-B-2-28
ø160-B-2-28
ø170-B-2-28
ø165-B-2-28
ø165-B-2-28
ø165-B-2-28
ø165-B-2-28
ø170-B-2-28
ø160-B-2-28
ø315-B-2-42
ø280-B-2-42
ø200-B-2-42
ø212-B-2-42
ø224-B-2-42
ø236-B-2-42
ø280-B-2-42
ø315-B-2-42
ø250-B-2-42
B48
B49
B50
B51
B52
B54
B54
B57
B56
V-belte
B51
B51
B51
B50
B53
B56
B55
V-belte
60Hz
Motor pulley Fan pulley
ø280-B-2-42
ø165-B-2-28
ø165-B-2-28
ø165-B-2-28
ø180-B-2-28
ø170-B-2-28
ø355-B-2-42
ø250-B-2-42
ø280-B-2-42
ø280-B-2-42
-
ø160-B-2-28
ø160-B-2-28
ø170-B-2-28
ø300-B-2-42
ø315-B-2-42
ø355-B-2-42
-
ø300-B-2-42ø180-B-2-38
ø355-B-2-42
ø355-B-2-42ø160-B-2-38
60Hz
Fan pulleyMotor pulley
ø160-B-2-38 ø250-B-2-42
ø280-B-2-42
ø300-B-2-42
ø170-B-2-38
ø160-B-2-38
ø160-B-2-38
ø160-B-2-38 ø315-B-2-42
B52
B56
B54
B54
B55
B56
B60
B59
-
V-belte
B50
B55
B52
B54
B55
B58
B58
V-belte

12
4. External Dimensions
PUHY-P250YHM-A(-BS) Unit : mm
172142 B
A
ø
22.2 Brazed
ø
9.52 Brazed
Gas
Liquid
Gas
Liquid
Connection specifications for the refrigerant service valve
PUHY-P250YHM
Position dimensions for the refrigerant service valve
Model
Connecting pipe specifications
Refrigerant service valve <gas>
Refrigerant service valve <liquid>
ø
34 Knockout hole
ø
52 Knockout hole
ø
52 or
ø
27 Knockout hole
ø
65 or
ø
40 Knockout hole
150X92 Knockout hole 102X72 Knockout hole
Front through hole
Bottom through hole Front through hole
Front through hole
Bottom through hole
Front through hole
For transmission cables
For wires
For pipes
Specifications
Usage
NO.
Note1.Please refer to the next page for information
regarding necessary spacing around the unit and foundation work.
2.The detachable leg can be removed at site. 3.At brazing of pipes,wrap the refrigerant service valve
with wet cloth and keep the temperature of refrigerant service valve under 120˚C.
<Accessories>
Connecting pipe
<Gas> · Elbow(ID25.4XOD25.4)···P250 · Pipe (ID25.4XOD22.2)···P250 <Liquid> · Pipe (ID9.52XOD9.52)···P250
*1
*1 Connect by using the connecting pipes (for bottom piping and front piping) that are supplied.
(front and back,2 points)
Note 2*
5555
60 60
760
A
B
60
Detachable leg
60 1710
72
Control box
132
6
4
3
1
1 2 3 4 5 6
25
Intake air
90
204 102251
240
Intake air
Service panel
1410
1650
760
920
88
25
54
Intake air
Discharge air
98
Front view
Left side view
Top view
1pc. 1pc. 1pc.
221 150
(Mounting pitch)
(Mounting pitch)
Refrigerant service valve <gas>
Refrigerant service valve <liquid>
2X2-14X20 Oval hole
145
83
760
80 760 80
18 724(721 727) 18
92 86
131
251
186
52
145
Bottom view

13
PFD-P250VM-E Unit : mm
390 50 50
100
Note1. Be sure to set up a trap for Emergency
drain piping. (Trap height:beyond 100mm) (Trap is not necessary for main drain piping.)
2. Approve this figure because it is refused
for the improvement and specification subject to change without notice.
3. Amputate a gas pipe/liquid pipe in the
fixed height at the time of 2 refrigerant circuit connection, and connect it with the local pipe.
Drain piping connection for humidifier
Air inlet
500 or more200 or more
400 or more
800 or more
Indoor unit
Service space
Unit surface figure
Pipe execution space
Unit front figure
Indoor unit
Service space
Hole for the control wiring
Lifting bolts
<2-ø32 knock out
hole>
Hole for the power supply(Body)
<Nomal/Local>
1380
Remote controller
A
Refrig. piping <gas> ø22.2 braze
Power supply:White Operating :Green Check :Yellow Failure :Red (Accessory)
Filter
Lamp
<view from A>
320
220
1950
20
100
462
580
Panel
<ø32 knock out hole>
Air inlet
Control box 50
140
Hole for the control wiring <ø32 knock out hole>
Main drain piping connection <Rp1-1/4>
<Accessory>
· Lifting bolts ······4pc. · Front panel opening and closing key ······1pc.
100
Air outlet
Refrig. piping <liquid> ø9.52 braze
Hole for the power supply <ø32 knock out hole>
260
68
100
1180
780
1340
Hole for the control wiring(ø60)
410
68
Hole for the power supply(ø60)
321
220
Hole for gas pipe connecting(ø42)
Air outlet
20
Bolt holes:8-ø18
140
305
100
518
Hole for liquid pipe connecting(ø24)
65
<Rp1-1/4>
Hole for liquid pipe connecting(ø24)
87
186
20
Emergency drain piping connection <Rp1-1/4>
Hole for gas pipe connecting(ø42)
Changeover switch (SW9)
340
100
150
260
171
20
401
740

14
PFD-P500VM-E Unit : mm
50100
140
50 50390
100
68
124 135
Note1. Be sure to set up a trap for Emergency
drain piping. (Trap height:beyond 100mm) (Trap is not necessary for main drain piping.)
2. Approve this figure because it is refused
for the improvement and specification subject to change without notice.
3. Amputate a gas pipe/liquid pipe in the
fixed height at the time of 2 refrigerant circuit connection, and connect it with the local pipe.
Refrig. piping <liquid> in 2 refrig. circuit system ø 9.52 braze No.1
Refrig. piping <gas> in 2 refrig. circuit system type P450:ø 19.05 braze, type P560:ø 22.2 braze No.1
Refrig. piping <liquid> ø 15.88 braze
Refrig. piping <gas> ø 28.58 braze
Hole for No.2 gas pipe connecting(ø 42) in 2 refrig. circuit system
Hole for No.2 liquid pipe connecting(ø 24) in 2 refrig. circuit system
Hole for liquid pipe connecting(ø 34) Hole for No.1 liquid pipe connecting (ø 24) in 2 refrig. circuit system
Bolt holes:8-ø 18
Hole for No.1 gas pipe connecting(ø 42) in 2 refrig. circuit system
Hole for gas pipe connecting(ø 48)
Main drain piping connecting<Rp1-1/4>
Drain piping connection for humidifier
<Accessory>
· Lifting bolts ······4pc. · Front panel opening and closing key ······1pc.
Air inlet
Service space
Indoor unit
Pipe execution space
Panel opening and closing dimension
Indoor unit
Unit surface figure
Service space
400 or more
Unit front figure
1000 or more ✻1
200 or more
✻1. It is necessary for the removal
of the panel beyond 600mm.
500 or more
710
Refrig. piping <gas> in 2 refrig. circuit system type P450:ø 19.05 braze, type P560:ø 22.2 braze No.2
680
<2-ø 32 knook out
hole>
<ø 32 knook out hole>
Air outlet
Air inlet
Power supply:White Operating :Green Check :Yellow Failure1 :Red Failure2 :Red
<Normal/Local>
(Accessory)
<view from A>
<Rp1-1/4>
Air outlet
Hole for liquid side pipe connecting or No.1 gas side pipe connecting(ø 42) in 2 refrig. circuit system
Hole for No.2 gas side pipe connecting(ø 42) in 2 refrig. circuit system
100 1001780
1940
100
2020
20
65
321
100
410
359 241
740
359
580
305
320
220
370
20
Emergency drain piping connection <Rp1-1/4>
Hole for No.1 liquid side pipe connecting (ø 24) in 2 refrig. circuit system
Hole for the power supply(ø 60)
1950
780
Hole for gas side pipe connecting or No.2 liquid side pipe connecting(ø 48) in 2 refrig. circuit system
440
Air outlet
185
379
135
Refrig. piping <liquid> in 2 refrig. circuit system ø 9.52 braze No.2
68
120
Hole for the control wiring <ø 32 knook out hole>
Hole for the power supply <ø 32 knook out hole>
220
150
81
Hole for the control wiring(ø 60)
Panel
68
Lifting bolts
171
A
Control box
Lamp
Filter
Remote controller
838
Hole for the control wiring
1980
124
68
Hole for the power supply(Body)
Changeover switch (SW9)

15
5. Electrical Wiring Diagrams
PUHY-P250YHM-A
For opening/closing the bypass circuit
Outdoor unit heat exchanger capacity control
Solenoid valve
Control box internal temperatureTHBOX Pipe temperature
Z24,25
Thermistor Subcool bypass outlet
temperature
Discharge pipe temperature ACC inlet pipe temperature
Subcooled liquid refrigerant temperature
OA temperature IGBT temperature
Function setting connector
THHS TH7 TH6 TH5 TH4 TH3 TH2
Power supply
Explanation
Indoor/Outdoor transmission cable Central control transmission cable
Terminal block
TB7 TB3 TB1
Symbol
Pressure control,Refrigerant flow rate control
DC reactorDCL
SV1a LEV2a,b LEV1 Linear
expansion valve Solenoid valve
HIC bypass,Controls refrigerant flow in HIC circuit
CT12,22,3 CH11 Crankcase heater(for heating the compressor)
Current sensor(AC) Magnetic relay(inverter main circuit)72C Low pressure
Discharge pressure
High pressure protection for the outdoor unit
Pressure switch Pressure sensor
63LS 63H1
Symbol Explanation
4-way valve21S4a,b
For opening/closing the bypass circuit under the O/S
SV5b
SV9
63HS1
<Symbol explanation>
*1.Single-dotted lines indicate wiring not supplied with the unit. *2.Dot-dash lines indicate the control box boundaries. *3.Refer to the Data book for connecting input/output signal connectors. *4.Daisy-chain terminals (TB3) on the outdoor units in the same refrigerant system together. *5.Faston terminals have a locking function.Make sure the terminals are securely locked in place after insertion.Press the tab on the terminals to removed them. *6.Control box houses high-voltage parts. Before inspecting the inside of the control box,turn off the power,keep the unit off for at least 10 minutes, and confirm that the voltage between FT-P and FT-N on INV Board has dropped to DC20V or less.
M1 M2
SV1a
Z3
21
M-NET power supply circuit
C5
LED3:CPU in
operation
LED1:Normal
operation
SC-L1
SC-L2
1 2
W
U
SC-W
1
Z5
R1 R2 R3
C3 C2
F3 F2 F1
Z1 Z2
R5
D1
R4
R6
C17
Diode Bridge
C7 C8 C9
C10 C4
C1
C6
Power Source
3N 50/60Hz
380/400/415V
NL3L2L1
TB1 NL3L2L1
L
F4 AC250V 6.3A T
black
white
red
3 1
CN3 green
TB24
N
TB23
L3
TB22
L2
TB21
L1
CN1B
4131
CN1A
UUU
F1,F2,F3 AC250V 6.3A T U
Z4
DSA
CN2
6 5 3 1
Noise Filter
U
ZNR01
U
31
CN5
red
3
CN4 blue
1
4 7 1
CNINV CNVDC
4 1
FAN Board
F01 DC700V 4A T
C630 C631
R631 R630 IPM
CN18V
blue CN4
red CN5
21 1 3 12
2 3 4 1
CN21
blue
CN22
red
6 5 4 3
THBOX
LED2:Error
Fan motor (Heat exchanger)
M
3
V
DCL R1 R5
*5
black
red
C100
2 43
1
72C
black
red
SC-P1
SC-P2
4
CN1
1
LED1 Normal operation(lit)
/Error(blink)
CN5V yellow
CN6
21 3
3
1
CN4
1 2
CN2
1 5 2 7 1
CNTYP
C1
RSH1
THHS
*6
FT-P FT-N
P N
INV Board
R34 C30 C32 C34 C36 R30 R32
C31 C33 C35 C37 R31 R33
black
white
redR35
CT3 SC-L3
IGBT
SC-U
SC-V
CT12 CT22
red white black
blackwhitered
UVW
MS
3
Motor (Compressor)
Central control transmission cable
Indoor/Outdoor transmission cable Indoor/Outdoor transmission cable
*4
TP2TP1
TB7SM2M1
TB3
M-NET Board
13
CN04 red
LED1:Power supply to Indoor/Outdoor transmission line
CN102
4321
CNS2 yellow
21 5432
CNIT red
1
63H1
P
LEV2b
M
LEV2a
M M
LEV1
1 2 3 4 5 6
CNLVA
CNLVB
red
1 2 3 4 5 6
5 4 3 2 1 6
CNLVC
red
3 1
CNTYP2
black
Z24
3 2 1
Z25
CNTYP5
green
CNTYP4
green
4 3 2 1
CN213
red
CN212
2 1
CN990
2 1
TH6 TH7 TH3
TH5
2 1 3
63LS 63HS1
2 1 3
TH2 TH4
3 2 1
CN202
red
CN201
2 3 1
CN215
black
2 1
CN211
2 1
red CNIT
yellow CNS2
51234
OFF ON
1234 1234
CN41
CN40
CN102
4321
CN3D
123
red CN3S
123
blue CN3N
123
*3
yellow CN3K
12
CNAC
red
21 3
F01 AC250V 3.15A T
6 5 3 1
SV9
X09 X10
CN508 black
X08 X07
1 3 5 6
CN507 red
6 5 3 1
SV5b CN506
X06 X05
3 1
21S4a CN504
green X04
X03
CH11
3 1
CN503 blue
2 1
CN502 X02
X01
21S4b
1 1
CN501
2
3
CNAC2 black
6 5
72C
1 2
CN72 red
31
CNDC pink
12
CNT01
13 12 21 21
CN801 yellow CNT02 CN332
blue CN4
CN2
7 5 2 1
CPU power supply circuit
Power failure detection circuit
Control Board
LED1
SW1
ONOFF
1
10
SW2
ONOFF
1
10
SW3
ONOFF
1
10
SW4
ONOFF
1
10
ONOFF
1
10
SW5
5 4 3
12V
1
CN51
*3
SWU2 SWU1
10's digit 1's
digit
Unit address setting LED1
Display setting
Function setting
Compressor ON/OFF output Error detection output
TB7 Power selecting connector
LED3:Lit when powered
LED2:CPU in operation
black t
t t
t
t
t
t
t

16
PFD-P250VM-E
u
Note:1. The dotted lines show field wiring. 2. The address setting of the indoor unit should always be odd. 3. The outdoor unit to which the indoor unit is connected with the transmission line, the address of the outdoor unit should be the indoor unit +50. 4. Mark indicates terminal bed, connector, board insertion connector or fastening connector of control board.
0
F
E
D
C
B
A
9
0
9
8
7
6
5
4
3
2
1
9
1
2
3
4
5
6
7
8
0
8
7
6
5
4
3
2
1
2121
7123456
CN7V
CN24 CN25
X11
SW8
SW4
SW11
(1st digit)
SW12
(2nd digit)
SW14
SW7 SW2 SW1SW3
SWC SW5
Address (odd)
1234561232121212112
T
CN3T
3
CN28 CN31CN29CN20 CN21 CN60CN22
Z3
33P1
97513131311
CNT CND
CN90CN33
CNP
5432
165432CN51
1
CN52
Dehumidify
ZNR901
DSA1
CN3A
ZNR1
F901 X06 X05 X04
3 2 1 2
CN32
3 2 1
X01
CN2M
I.B.
1
X07
Z1
Inside section of control box
RC
2 12
1
TB15
Failure output Distant location on/off <no voltage or current> Status output Distant location on/off <with voltage and current> Power supply DC30V, AC100/200V
Switch(normal/local)
Power supply DC12~24V
Power supply 380/400/415V(50Hz) 400/415V(60Hz)
DC24~30V Indoor unit Control wiring
LED display(failure)
LED display(status)
LED display(power supply)
3N~
LED display(check)
SW9
2 3 4 5 1 5 4 3 2 1
B2 B1 BC A2 A1 AC
5 4 3 2 1
C
IFB
3
L3
A1
S
B1
L2
L1
X11 1
2 2 1 6 5 1 2
PE
N
F1
3 4 5 6
3 1
ZNR1
3 1CN1
DSA1
PE
TB23 TB21
L
L
TB22
CN53
TB2
S.B.
CN54
L3
TB5
SHIELD
L2 L1 L4
FAN over current detection
51F
Z1
ZNR2
52F Z3
51F 52F
MF
TH24 TH21 TH22 TH23
6 5 4 3 2 1
LEV
SYMBOL NAME
DSA1 Surge absorber
LED display (power supply)
F901 ZNR1, ZNR2, ZNR901 MF I.B. S.B. IFB TB2 TB5 TB15 TB21 TB22 TB23 F1 T LEV 52F 51F 33P1 RC L4 L3 L2 L1 Z3 Z1 X11 SWC(I.B.) SW14(I.B.) SW12(I.B.) SW11(I.B.) SW9 SW4(I.B.) SW3(I.B.) SW2(I.B.) SW1(I.B.)
Surge absorber board Switch (outlet/inlet temp.control) Float switch Fuse<6-3/6A> Varistor Transformer Electronic linear expan.valve Contactor(fan I/D) Over current relay (fan I/D) Fuse<5A> Thermistor (inlet temp.detection) Switch (connection No.set) Switch (for mode selection) Switch (for capacity code) Switch (for mode selection) Switch (for model selection) Auxiliary relay(check) LED display (failure) LED display (status) LED display (check) Switch (normal/local)
TH24 TH23 TH22 TH21
Switch (1st digit address set) Switch (2nd digit address set) Fan motor Indoor controller board Power source terminal bed Transmission terminal bed External input/output board Transmission terminal bed MA Remote controller Terminal bed for distant location on/off <With voltage and current> Terminal bed for distant location on/off <No voltage or current> Auxiliary relay(fan failure detection) Auxiliary relay(fan) Thermistor (piping temp.detection/gas) Thermistor (piping temp.detection/liquid) Thermistor (outlet temp.detection) Terminal bed for distant location display
External input adapter (PAC-SA88HA)
CN52 5(green)
1(brown) Z
Indoor unit control board Relay circuit
The signal input of the dehumidify order is to connect wiring referring to the bottom figure.
SW
Power
Distant control panel
SW:Defumidify order
(field supply and construction)
Z
Z:Relay (Contact : Minimum applicable load DC12V 1mA or less)
u
u
u
t t
t
t