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
······························································
······························································
·····
·························································
·························································
·························································
·························································
·················································
·························································
····························
·························································
···································································
···································································
···································································
···········································
···········································
·································································
······················································
···
··············································
·································································
················
············································
·······························
···············································
·····················
················
···
···
·························
··········
·············································
······················
···············································
·······························

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