Mitsubishi Electric PUHY-P-YJM-A Product guide

DATA BOOK
AIR CONDITIONING SYSTEMS
MODEL
PUHY-P-Y(S)JM-A
PFAV-P-VM-E(-F)

%!. System Design
1. Outdoor Installation······································59
(1) Requirement on installation site
(2) Spacing
(3) Piping direction
(4) Weather countermeasure
2. Indoor Installation·········································69
(1) Requirement on installation site
(2) Spacing
(3) Installing the Indoor Unit
(4) Separating the indoor unit to allow for easy
transportation
(5) Internal diagram
%!!. Piping Design
1. R410A Piping material ··································81
2. Piping Design ················································82
(1) PUHY-P250 Piping
(2) PUHY-P500, 750 Piping
(3) PUHY-P-Y(S)JM's refrigerant charging
calculation
%!!!. Wiring Design
1. External wiring diagram ·······························85
(1) Power supply examples
2. Electrical work···············································87
(1) Power cable specifications
3. M-NET control ···············································88
(1) Types and maximum allowable length
of cables
(2) Switch settings and address settings
4. An Example of a System to which an MA
Remote Controller is connected··················90
(1) Sample control wiring
(2) Sample control wiring (Different refrigerant
group operation)
(3) Sample control wiring (connect the system
controller to the transmission cable for the
centralized control)
5. System control ··············································93
(1) System control for the indoor units
(2) System control for the outdoor units
6. Caution for refrigerant leakage····················99
(1) Refrigerant property
(2) Confirm the Critical concentration and
take countermeasure
!. General Cautions
1. Indoor Unit Line-up·········································1
2. Temperature range ·········································2
3. Notes on selecting equipments·····················3
(1) Notes on using the Fresh Air Intake type units
!!. Indoor Unit
1. Specifications··················································5
(1) Standard type
(2) Fresh air intake type
2. External dimensions·······································7
(1) Standard type
(2) Fresh air intake type
3. Center of gravity ···········································13
4. Electrical wiring diagram ·····························14
(1) Standard type
(2) Fresh air intake type
5. Sound Pressure Levels ································18
(1) Standard type
(2) Fresh air intake type
6. Vibration levels ·············································21
7. Fan characteristic curves·····························22
(1) Standard type
(2) Fresh air intake type
8. Optional parts················································41
(1) Plenum chamber
!!!. Outdoor Unit
1. Specifications················································42
2. External dimensions·····································43
3. Center of gravity ···········································47
4. Electrical wiring diagram ·····························48
5. Sound Pressure Levels ································49
6. Optional parts················································51
(1) Outdoor twinning kit
!%. Capacity Tables
(1) Correction by temperature ························52
(2) Correction at frost and defrost ···················54
(3) Correction by refrigerant piping length
(cooling) (heating) ·····································54
(4) Correction by indoor unit airflow rate
(cooling) (heating) ·····································55
(5) Input correction by capacity ·······················56
(6) Bypass factor ·············································57
%. Controller
1. Local remote controller ································58
(1) MA Remote controller
Contents

1
!. General Cautions
1. Indoor Unit Line-up
Model type Fresh air intake type
Model size P300 P900
Nominal HP 10HP 30HP
Nominal cooling cap. *1 kW 28.0 80.0
Nominal heating cap. *2 kW 26.5 71.0
Floor standing PFAV-P-VM-E-F
Connectable outdoor unit type PUHY-P250YJM-A PUHY-P750YSJM-A
*Nominal conditions *1,*2 are referable at the Specification sheet.
P600
20HP
56.0
50.0
PUHY-P500YSJM-A
Model type Standard type
Model size P250 P750
Nominal HP 10HP 30HP
Nominal cooling cap. *1 kW 25.0 71.0
Nominal heating cap. *2 kW 28.0 80.0
Floor standing PFAV-P-VM-E
Connectable outdoor unit type PUHY-P250YJM-A PUHY-P750YSJM-A
*Nominal conditions *1,*2 are referable at the Specification sheet.
P500
20HP
50.0
56.0
PUHY-P500YSJM-A

2
2. Temperature range
Cooling Heating
Indoor temperature Wet-bulb temperature
10~25˚C [50~77˚F] (Note 1)
Dry-bulb temperature
15~28˚C [59~82˚F]
Outdoor temperature Dry-bulb temperature
-5~43˚C [23~109˚F]
Wet-bulb temperature
-20~15.5˚C [-4~60˚F]
Standard type
Note 1. If units are operated for a long time at the dew point temperature of 23˚C [73˚F] or more, condensate may collect and drip from the indoor
units. If the units are operated under such conditions, cover the entire surface of all indoor units with insulating materials with a thickness of
between 0 and 20 mm [13/16 in.] to prevent condensate from collecting.
Cooling Heating (Note 2)
Indoor temperature Wet-bulb temperature
15~35˚C [50~95˚F]
Dry-bulb temperature
0~20˚C [32~68˚F]
Outdoor temperature Dry-bulb temperature
20~43˚C [68~109˚F]
Wet-bulb temperature
-4~15.5˚C [24~60˚F]
Fresh air intake type
Note 2. If the indoor intake air is pretreated to 0˚C in the primary treatment, the unit can be operated in the outdoor intake air temperature range of
between -20 and 15.5˚CWB [-4 and 60˚FWB].

3
(1) Notes on using the Fresh Air Intake type units
1Fresh air intake type indoor units supply pretreated outside air into the room. This type of units are not designed to
handle internal thermal load. Use other types of air conditioning units (e.g., CITY MULTI system) that are capable
of handling internal thermal load in combination with the Fresh Air Intake type units.
2The control mode is selectable between room temperature control and supply air temperature control. The default
mode is room temperature control. Install the supplied thermistor in a location that allows the sensor to measure
the representative room temperature.
·Fresh air intake type units are intended to be used in an environment at a temperature of 0˚CDB
[32˚FDB] or above. If the units are operated in the fan mode at the temperature below 0˚C[32˚F],
condensation may form on the panel under certain conditions. Use caution so that the
condensation will not drip on appliances around the unit.
·The unit may be forced to operate in the heating mode to prevent cold draft when the return air
temperature (outside air temperature sensor reading) reaches 5˚C[41˚F] or below. The fan will
stop during the defrost cycle and when there is a problem with the entire refrigerant systems.
The fan can be set to operate in the conditions above by making certain switch settings if a
sudden supply of cold air into the room during the heating season will not be a problem.
·Note that untreated outside air may be delivered directly into the room upon Thermo-OFF. Use
extra caution when the outside temperature is low. Direct exposure to outdoor air may have an
adverse effect on health or cause food spoilage.
·Fresh air intake type units are not equipped with a dehumidifying function. Take appropriate
measures to keep condensation from forming on the supply air grill and other parts that are
subject to condensation. Line the supply and return air ducts with insulation to prevent
condensation.
Common items
Room
temperature
control
(factory setting)
·Install the thermistor that is supplied with the indoor unit. Check that Switch 7-2 is set to OFF.
·Install the thermistor in a location that allows the sensor to measure the representative room
temperature.
·The unit will go into the forced Thermo-OFF mode when the return air dry bulb temperature
(outside air temperature sensor reading) is 21˚C[70˚F] or below during cooling OR 20˚C[68˚F] or
above during heating.
·The settable temperature range on the remote controller is as follows: Cooling 19 - 30˚C[66 -
86˚F]; Heating 17-28˚C[63 - 82˚F].
·Indoor temperature and humidity can fluctuate greatly depending on the outside air load.
Supply air
temperature
control
·Connect the connector of the supply air temperature sensor that is built in on the indoor unit to
the control board. Turn Switch 7-2 to ON.
·The unit will go into the forced Thermo-OFF mode and operate in the Fan mode when the return
air dry bulb temperature (outside air temperature sensor reading) is 14˚C[57˚F] or below during
cooling OR 28˚C[82˚F] or above during heating.
·Supply air temperature may fluctuate, depending on the temperature/humidity of the outside air
or on other operating conditions. Units may go in and out of the Thermo-ON/OFF mode when
the following conditions are met: The difference between the outside temperature and the preset
temperature is less than approximately 6˚C[43˚F] due to excess capacity. They may change
depending on the air flow rate and preset temperature.
·Supply air temperature normally appears on the remote controller. When the unit operation is
not stable, this temperature may blink on the display and can be mistakenly interpreted as an
error. If this is a problem, change the setting to suppress the temperature display. Refer to the
section "How to use the remote controller" in the Instructions Manual for how to make the setting.
·The settable temperature range on the remote controller is as follows: Cooling 14 - 30˚C[57 -
86˚F]; Heating 17-28˚C[63 - 82˚F].
·Depending on the air conditioning load, outside temperature, and due to the activation of
protection functions, the desired preset temperature may not always be achieved.
3
Fresh air intake type indoor unit Indoor temperature controlling unit
Temperature sensor*2
Supply air temperature sensor*1
(Built in, not connected at the time of factory shipment)
(supplied)
Outside air damper
Outside air temperature sensor (built in)
Remote controller
(built in)
Discharge air
<Fresh Air Intake type sample installation>
*1 Enable to use the supply air
temperature control mode
*2 Enable to use the room
temperature control mode
3. Notes on selecting equipments

4
4Fan control
The unit may be forced to operate in the heating mode to prevent cold draft when the return air temperature
(outside air temperature sensor reading) reaches 5˚C[41˚F] or below. At the time of factory shipment, fan setting is
made so that the fan will stop during the defrost cycle and when there is a problem with the entire refrigerant
systems.
See below for switch settings and unit operation.
5Sample operation patterns (supply air temperature control)
The unit will follow the operation control pattern below at the nominal air flow rate and the preset temperature of
22˚C[72˚F]. Use it only as a guide. The range changes with the air flow rate and preset temperature.
6Thermo-ON/OFF conditions (supply air temperature control)
*Settings in the shaded areas indicate factory settings.
Specifications
Forced heating
operation
Fan operation
during defrost
·Forced heating
operation disabled
·Fan stays on
when there is an
error. (The fan
stops when there
is a problem with
the fan or a
communication
error.)
·The fan turns off
when the entire
refrigerant system
is in the defrost
cycle
·Forced heating
operation enabled
·Fan turns off when
there is a problem.
·The fan turns on
during defrost
SW
SW1-7
SW3-4
Notes
When the return air temperature
reaches 5˚C[41˚F] or below, the unit will
be forced to operate in the heating
mode to prevent cold draft regardless of
the actual operation mode setting.
If the return air temperature reaches
6˚C[43˚F] or above, the units will
resume operation in the selected mode.
The fan will stop when there is an error,
regardless of the outside temperature.
Operation
OFF ON
*Operating the fan during the defrost cycle can cause cold outside air to be delivered into the room, and it can also
delay normal unit operation to be resumed after the defrost cycle is completed, both of which can greatly decrease
the room temperature.
Outside temperature [˚F]
(˚C)
Cooling mode
Forced
heating
operation
Cooling Thermo-OFF
Fan mode
Heating Thermo-OFF
Heating operation
Cooling operation
ControllableNote 1
Controllable
Thermo ON/OFF
Thermo ON/OFF
Supply air
temperature rises.
Forced
heating
operation
Heating mode
Fan mode
<Cooling operation>
32 41 50 59 68 77 86 95 109
051015 20 25 30 35 43
Note 1 Thermo-ON: Controllable; Thermo-OFF: Forced heating
Preset temperature
Thermo-OFF conditions
(1, 2, or 3)
Thermo-ON conditions
14 ~ 30˚C [57 ~ 86˚F]
1Outside temp. < Preset temp.+0.5
2Supply air temp. < Preset temp.-2˚C lasting for consecutive 10 minutes
315 or more minutes after startup AND Supply air temp. < Preset temp.-5˚C
Supply air temp. > Preset temp +2˚C AND Return air temp. > Preset
temp.+1.5˚C, AND at least 3 minutes have passed since Thermo-OFF
<Heating operation>
Preset temperature
Thermo-OFF conditions
(1, 2, or 3)
Thermo-ON conditions
17 ~ 28˚C [68 ~ 82˚F]
1Outside temp. < Preset temp.+0.0
2Supply air temp.> Preset temp.+5˚C lasting for consecutive 10 minutes
315 or more minutes after startup and Supply air temp. > Preset temp.+10˚C
Supply air temp. < Preset temp.-2˚C AND Return air temp. < Preset temp. -
1.5˚C AND at least three minutes have passed since Thermo-OFF

1. Specifications
(1) Standard type
5
!!. Indoor Unit
Model Name
Indoor PFAV-P250VM-E
Outdoor
PUHY-P250YJM-A
Cooling
Heating
Cooling
Heating
System capacity kW
kW
kW
kW
Cooling
Heating
25.0 (Maximum28.0)
28.0 (Maximum 31.5)
System Power input 7.46 / 7.53
8.27 / 8.34
System current A
A
14.5-13.8-13.3 / 13.4-12.8-12.3
15.8-15.0-14.4 / 14.7-14.0-13.4
Power source 3-phase 4-wire 380-400-415V (50Hz / 60Hz)
Power input kW 0.82 / 0.89
Current A 3.4-3.2-3.1 / 2.3-2.2-2.1
Fan
Type x Quantity Sirocco fan x 2
Airflow rate m /min
390
External static pressure Pa 30 / 90
Motor output kW 2.2
Refrigerant R410A
External finish
External dimension mm
1748(H) x 1200(W) x 485(D)
Protection devices Fan Thermal switch
Refrigerant
piping diameter
mm
mm
Liquid pipe
9.52 Brazed (12.7 for over 90m)
Gas pipe 22.2 Brazed
Refrigerant piping allowable length m 165
Sound pressure level dB(A) 55
Heat exchanger Cross fin (aluminum plate fin and copper tube)
Air filter Synthetic fiber unwoven cloth filter
Net weight kg 156
Operating
temperature range
Cooling
Heating
PFAV-P500VM-E
PUHY-P500YSJM-A
(PUHY-P250YJM-A x 2,
CMY-Y100VBK2)
50.0 (Maximum56.0)
56.0 (Maximum 63.0)
17.85 / 18.84
17.00 / 17.99
32.3-30.7-29.6 / 32.6-31.0-29.9
30.8-29.3-28.2 / 31.1-29.6-28.5
2.37 / 3.36
6.2-5.9-5.7 / 6.5-6.2-6.0
Sirocco fan x 1
180
30 / 130
5.5
R410A
Galvanized steel plate (with polyester coating)
MUNSELL 5Y 8 / 1 or similar
1899(H) x 1420(W) x 635(D)
Thermal switch
15.88 Brazed
28.58 Brazed
165
59 / 62
265
Indoor: 10 to 25 ˚CWB
Indoor: 15 to 28 ˚CDB
(Outdoor: -5 to 43 ˚CDB)
(Outdoor: -20 to 15.5 ˚CWB)
PFAV-P750VM-E
PUHY-P750YSJM-A
(PUHY-P350YJM-A +
PUHY-P400YJM-A,
CMY-Y200VBK2)
71.0 (Maximum 80.0)
80.0 (Maximum 90.0)
26.33 / 27.40
23.93 / 25.00
48.1-45.7-44.1 / 47.5-45.1-43.5
43.4-41.2-39.8 / 42.8-40.6-39.2
4.30 / 5.37
10.9-10.4-10.0 / 10.3-9.8-9.4
Sirocco fan x 1
260
100 / 310
7.5
R410A
1860(H) x 1750(W) x 1064(D)
Thermal switch
19.05 Brazed
34.93 Brazed
165
65
PP Honeycomb fabric filter
459
Note
1. Cooling / Heating capacity indicates the value 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, Level difference: 0m
2. The sound pressure level is measured in an anechoic room.
3. Long period operation in a high temperature and humidity atmosphere (dew point of 23˚C or more) may cause
condensation to form in the indoor unit.
4. Works not included: Installation / foundation work, electric connection work, duct work, insulation work.
The power source switch and other items are not specified in the specifications.

6
Model Name
Indoor PFAV-P300VM-E-F
Outdoor
PUHY-P250YJM-A
Cooling
Heating
Cooling
Heating
System capacity kW
kW
kW
kW
Cooling
Heating
28.0 (Maximum 33.5)
26.5 (Maximum 28.0)
System Power input 6.73 / 6.72
7.57 / 7.56
System current A
A
12.6-11.9-11.5 / 12.2-11.5-11.1
14.0-13.3-12.8 / 13.6-12.9-12.4
Power source 3-phase 4-wire 380-400-415V (50Hz / 60Hz)
Power input kW 0.37 / 0.36
Current A 1.9-1.8-1.7 / 1.5-1.4-1.3
Fan
Type x Quantity Sirocco fan x 2
Airflow rate m /min
345
External static pressure Pa 80
Motor output kW 1.5
Refrigerant R410A
External finish
External dimension mm
1748(H) x 1200(W) x 485(D)
Protection devices Fan Thermal switch
Refrigerant
piping diameter
mm
mm
Liquid pipe
9.52 Brazed (12.7 for over 90m)
Gas pipe 22.2 Brazed
Refrigerant piping allowable length m 165
Sound pressure level dB(A) 48.5
Heat exchanger Cross fin (aluminum plate fin and copper tube)
Air filter Synthetic fiber unwoven cloth filter
Net weight kg 151
Operating
temperature range
Cooling
Heating
PFAV-P600VM-E-F
PUHY-P500YSJM-A
(PUHY-P250YJM-A x 2,
CMY-Y100VBK2)
56.0 (Maximum 67.0)
50.0 (Maximum 56.0)
14.69 / 15.05
15.43 / 15.79
26.1-24.9-24.0 / 26.2-25.0-24.0
27.4-26.1-25.1 / 27.5-26.2-25.1
0.90 / 1.26
2.9-2.8-2.8 / 3.0-2.9-2.8
Sirocco fan x 1
90
110 / 170
2.2
R410A
Galvanized steel plate (with polyester coating)
MUNSELL 5Y 8 / 1 or similar
1899(H) x 1420(W) x 635(D)
Thermal switch
15.88 Brazed
28.58 Brazed
165
50 / 53
248
Indoor: 15 to 35 ˚CWB
Indoor: 0 to 20 ˚CDB
(Outdoor: 20 to 43 ˚CDB)
(Outdoor: -4 to 15.5 ˚CWB)
PFAV-P900VM-E-F
PUHY-P750YSJM-A
(PUHY-P350YJM-A +
PUHY-P400YJM-A,
CMY-Y200VBK2)
80.0 (Maximum 100.0)
71.0 (Maximum 80.0)
22.54 / 22.74
21.43 / 21.63
40.5-38.5-37.1 / 39.6-37.6-36.2
38.7-36.8-35.5 / 37.8-35.9-34.6
1.77 / 1.97
5.6-5.3-5.1 / 4.7-4.4-4.2
Sirocco fan x 1
120
210 / 330
3.7
R410A
1860(H) x 1750(W) x 1064(D)
Thermal switch
19.05 Brazed
34.93 Brazed
165
57
PP Honeycomb fabric filter
437
Note
1. Cooling / Heating capacity indicates the value at operation under the following conditions.
(Cooling) Indoor,Outdoor: 33˚CDB / 28˚CWB
(Heating) Indoor,Outdoor: 7˚CDB / 3˚CWB
Pipe length: 7.5m, Level difference: 0m
2. The sound pressure level is measured in an anechoic room.
3. The indoor intake air temperature should be kept more than 0 ˚C.
4. At factory setting, the fan temporary stops in defrosting. Change DIP SW for fan to operate in defrosting.
5. Indoor temperature and humidity cannnot be controlled with Fresh air intake type.
6. Works not included: Installation / foundation work, electric connection work, duct work, insulation work.
The power source switch and other items are not specified in the specifications.
(2) Fresh air intake type

•PFAV-P250VM-E
7
2. External dimensions
(1) Standard type
30
20 19
152
300 85
8
160
Indoor unit
8
8
800
Service panel
(Service for thermistor)
Service panel
Service panel
(Service for fan pulley)
(Service for motor pulley)
Supply air duct flange
1650
Required space for service and air flow
50
500 100
Minimum necessary dimension.
385
105
92
7 456
215
130
40
40
39.5 39.5
2 1 3
6 5
4
60
60
90
40
485
18-ø3Holes
104 120 120
336
296
7
Rear air inlet
Supply air duct flange
Front air inlet
5 6
4
3 1 2
835 895
160X5=800
1200 1234 1262 1182
225
185
Remote controller
98
Secure the proper space for installation work such as piping and wiring separately.
Notes 1.Be sure to wire the transmission line and power line separately. 2.When the room in which the unit is installed is airtight, the pressure in the room may become negative. This may result in problems such as the door to becoming difficult to open etc. To avoid these kinds of problems please ensure that a small amount of air is able to ventilate the room via some kind of small hole or vent.
Earth terminal(installed in the control box)···M5 Wiring hole(The outdoor unit connection,Transmission line)······ø27
For mounting anchor bolt 4-ø12 Holes
Wiring hole······ø27 Power supply wiring hole······ø43 Drain hole······Rc 1 Refrigerant pipe<Liquid>···ø9.52 brazed Refrigerant pipe<Gas>···ø22.2 brazed
DesignationNO.
1 2 3 4 5 6 7 8
Unit:mm