Mitsubishi PU(H)Y-P250YGM-A, PUHY-P500YGM-A, PFD-P250VM-E, PFD-P500VM-E DATA BOOK

Model

PU(H)Y-P250YGM-A PUHY-P500YGM-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 SHF Curves 2-4 Correction by refrigerant piping length 2-5 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

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 6

7 7 8 8

10 14 18 20

20 21 22 24 29

33 33 33 34 35 36 38

39 39

Close control

PU(H)Y-P-YGM-A PFD-P-VM-E

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1. Specifications

1-1.Main Features

1

(1) List of Models

<10HP System>

<20HP System>

Single refrigerant circuit

PU(H)Y-P250YGM-A PUHY-P500YGM-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. ✻ It is necessary to rewrite the S/W on the control circuit board of the outdoor unit connected to

the PFD-type indoor units.

✻ 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 P21.

When using a PFD-P500VM-E as an indoor unit, connect an outdoor unit PUHY-P500YGM-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.

When using a PFD-P250VM-E as an indoor unit, connect an outdoor unit PU(H)Y-P250YGM-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

PU(H)Y-P250YGM-A

Indoor Unit

PFD-P250VM-E

TB7

TB3 ✻2✻3

✻1

12V DC

M-NET

PAC-SC50KUA

UP

POWER RATING

MODEL

WEIGHT SERIAL No.

2.11kg

POWER SUPPLY UNIT

MITSUBISHI ELECTRIC CORPORATION

PAC-SC50KUA

Outdoor Unit Indoor Unit

TB7

TB3 ✻2

✻1

PUHY-P500YGM-A PFD-P500VM-E

G-50A

12V DC

M-NET

PAC-SC50KUA

UP

POWER RATING

MODEL

WEIGHT SERIAL No.

2.11kg

POWER SUPPLY UNIT

MITSUBISHI ELECTRIC CORPORATION

PAC-SC50KUA

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

PU(H)Y-P250YGM-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

PU(H)Y-P250YGM-A x 2

or PUHY-P500YGM-A

When using a PFD-P500VM-E as an indoor unit, connect 2 PU(H)Y-P250YGM-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 refrigerant 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

PU(H)Y-P250YGM-A

Indoor Unit

PFD-P500VM-E

TB7

TB3 ✻2

✻1

TB3

PU(H)Y-P250YGM-A

TB7

✻3

G-50A

12V DC

M-NET

PAC-SC50KUA

UP

POWER RATING

MODEL

WEIGHT SERIAL No.

2.11kg

POWER SUPPLY UNIT

MITSUBISHI ELECTRIC CORPORATION

PAC-SC50KUA

Two refrigerant circuits

(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

m

3

/min

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

Compressor Fan

External dimension HxWxD Protection devices

Refrigerant piping diameter

High press. pipe

Low press. pipe Noise level Net weight

1,840 x 990 x 840

Propeller fan x 1

200

0.38 Hermetic

6.7

0.045 x 1

R410A/MEL32

Heat exchanger Salt resistant fin

Over current protection / Thermal protection

ø9.52 Flare (ø12.7 for over 90m)

ø22.2 Brazed

Pre-coated galvanized sheets (+ powder coating for -BS type) <MUNSEL 5Y 8/1 or similar>

4.15MPa

233

6.66.8

11.1/10.5/10.211.4/10.9/10.5

PU(H)Y-P250YGM-A (-BS) connected with PFD series

PUHY-P500YGM-A (-BS)

connected with PFD series

Over current protection / Over heat protection

Thermal switch

57/57

56.0 63.0

Cooling Heating Cooling Heating

1,840 x 1,990 x 840

Propeller fan x 2

400

0.38 x 2

8.2+5.3

0.045 x 2

ø15.88 Flare

ø28.58 Brazed

455

13.6 13.2

22.2/21.0/20.422.8/21.8/21.0

60/61

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

3N~380/400/415V(50Hz), 400/415V(60Hz)

PFD-P500VM-E

5.0

Power source

kW

-

Power input

System capacity

A

m

3

/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)

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)

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)

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.

5

2-3. 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

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

6

2-4. 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

0 20 40 60 80 100 120 140 160 180

2-5. Operation limit

Indoor temperature (˚CWB)

-15 0-5-10 5 1015202530354045

10

12

15

20

25

30

* The height between the Outdoor PU(H)Y-P-YGM-A and Indoor could make the running temperature range narrow. For details refer to P20, 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

3. Sound Levels

3-1. Noise Level

7

1m

Measured point

Series

Noise Level

(dB [Type A]) PFD-P250VM-E 59 PFD-P500VM-E 63

(1) Outdoor Unit

(2) Indoor Unit

Measured point

1m

Series

Noise Level

(dB [Type A]) PU(H)Y-P250YGM-A 57 PUHY-P500YGM-A 60/61

(50Hz/60Hz)

8

3-2. NC Curves

PU(H)Y-P250YGM-A

(External static pressure 0Pa)

PUHY-P500YGM-A

(External static pressure 0Pa)

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

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

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

OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20µPaOCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20µPa

OCTAVE BAND CENTER FREQUENCIES (Hz)

63 125 250 500 1000 2000 4000 8000

10

20

30

40

50

60

70

80

90

Approximate minimum audible limit on continuous noise

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

63Hz 125Hz 250Hz 500Hz 2000Hz1000Hz 4000Hz 8000Hz

dB(A)

62.5 58.5 55.5 53 49.5 49 49 43 57

50Hz 60Hz

OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20µPaOCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20µPa

OCTAVE BAND CENTER FREQUENCIES (Hz)

63 125 250 500 1000 2000 4000 8000

10

20

30

40

50

60

70

80

90

Approximate minimum audible limit on continuous noise

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

63Hz 125Hz 250Hz 500Hz 2000Hz1000Hz 4000Hz 8000Hz

dB(A)

67

50Hz 60Hz

61.5 60.5 58 53.5 50.5 48 43 60

68 65 60.5 59 54 51.5 49 43.5 61

9

3-3. Fan Characteristics Curves

PFD-P250VM-E

PFD-P500VM-E

: 50/60Hz, standard

0

100

200

300

400

500

600

700

800

900

1000

130 140 150 160 170 180 190

)aP(erusserpcitatsla

t oT

Fan rotation speed

Internal resistance

1200rpm

1100rpm

1000rpm

900rpm

800rpm

Output 3.7kW

136 184

Air volu me (m3/min)

✻ Pulley and V-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

Internal resistance

Fan rot ation speed

Output

5.5kW

StandardStandard

1000rpm

1100rpm

1000rpm

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 pulle y 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 pulle y Fan pulley

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 B53 B56 B56

V-belte

B51 B51 B51 B50 B53 B56 B55

V-belte

60Hz

Motor pulle y Fan pulle y

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 pulle y

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 B59 B59

-

V-belte

B50 B55 B52 B54 B55 B58 B58

V-belte

10

4. External Dimensions

PU(H)Y-P250YGM-A

Unit : mm

Note1.Use the opening at the bottom of the unit

when running the power supply line from

the front or from the side of the unit.

Note2.Please refer to the next page for information

regarding necessary spacing around the

unit and foundation work.

166

83100

44150

Y

20

70

80

100

90

10

4080

135

280

134

553

494

8057

16065

768

37 117 117 37

1575

1840

11

235

16067

990

16

840

67 207

207

67

78

X

877

845(mounting pitch)16

45900(mounting pitch)45

265

ø53

12 5

Conn. pipe(Liquid)

ø9.52 <Flare>

Conn. pipe(Gas)

ø22.2 <Brazed>

(Mounting hole)

Air outlet

Air

inlet

Air

inlet

ø62 Knockout hole

Changeable to ø27,ø33 by using

attached conduit mounting plate <Accessory>

ø27 Knockout hole

<Bottom hole for

control wiring>

Knockout hole

Left side view

ø27 Knockout hole

<Left side hole for

control wiring>

Knockout hole

• Refrigerant (Gas) conn. pipe......1 pc.

(Already installed on the unit)

• Packing for conn. pipe................1 pc.

(Attached near the ball valve)

• Conduit mounting plate

ø33, ø27..............................1 pc.Each

• Tapping screw M4......................2 pcs.

Cross section Y – Y

Cross section X – X

2X2-14X20 0val hole

Top view

Front view

Knockout hole

Service panel

Refrig. service

valve (Liquid)

<Flare>

Refrig. service

valve(Gas)

Knockout hole

<Front piping

hole>

136

11

PUHY-P500YGM-A

Unit : mm

Note1.Use the opening at the bottom of the unit

when running the power supply line from

the front or from the side of the unit.

Note2.Please refer to the next page for information

regarding necessary spacing around the

unit and foundation work.

44150

83

162

135

40

8910

37 115 115 37

134 100

280

80

20

70

494

145

553

1000

768

80

57

160 65

1840

1575

11

68

68 205 205

100

235

16067

78

265

45

1990

45950(mounting pitch)

877

840

16 16

845(mounting pitch)

950(mounting pitch)

512

ø53

Conn. pipe(Gas)

ø28.58<Brazed>

Conn. pipe(Liquid)

ø15.88<Flare>

YY

X

(Mounting hole)

Knockout hole

ø27 Knockout hole

<Bottom hole for

control wiring>

ø62 Knockout hole

Changeable to ø46,ø53 by using

attached conduit mounting plate <Accessory>

• Refrigerant (Gas) conn. pipe....1 pc.

(Already installed on the unit)

• Packing for conn. pipe......1 pc.

(Attached near the ball valve)

• Conduit mounting plate

ø53, ø46......1 pc.Each

• Tapping screw M4...2 pcs.

Air

inlet

Air

inlet

Air outlet

Cross section X – X

Cross section Y – Y

ø27 Knockout hole

<Left side hole for

control wiring>

Knockout hole

Left side view

Front view

Knockout hole

Service panel

Knockout hole

Refrig. service

valve (Liquid)

<Flare>

Refrig. service

valve(Gas)

Top view

3X2-14X20 Oval hole

12

PFD-P250VM-E

Unit : mm

390

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)

1380

Remote controller

A

Refrig. piping <gas> ø22.2 braze

Power supply:White

Operating :Green

Check :Yellow

Failure :Red

(Accessory)

Filter

Lamp

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>

· 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

340

100

150

260

171

20

401

740

13

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

· 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

(Accessory)

<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

14

5. Electrical Wiring Diagrams

PU(H)Y-P250YGM-A (Connected with PFD series)

–

+

X01

Radiator panel temp. detect(Fan)

THHS5

CNCT

yellow

orange

red

brown

A2A1

TH11

TH5

TH6

TH7

TH8

Z20

DC Current Sensor

DCCT

1 2 3 4

Power selection

connector

CN41CN40

1 2 3 41 2 3 4

1 2 3 4

DCCT

591

1

2

234

1

6

5

CNINV

LED1 operation

LED2 error

Compressor ON/OFF

Trouble

Low pressure sensor

CNRS3A

High pressure sensor

CN3S

red

CNVCC1

CN3D

SW1

Earth terminal

SW2SW3

SW4

LD1

ON

ONOFFOFF

ONOFF ONOFF OFF

SW5

1

Radiator panel temp. detect

(Compressor)

Control circuit board

10

21569

13

14

SWU2

Address setting

SWU1

CN52C

yellow

green

red

X09

CNS2

blue

CNS1

blue

3

CN20

CN21

blue

13

F02

250VAC

6.3A T

1 2 3 4 5

1 2 3

3

TB1

(Terminal Block)

Power source

3N~

380/400/415V

50/60Hz

black

red

52C1

DCL

C2

red

14

DS1

(Diode stack)

white

black

10

CNDC2

N

IPM

P

C4

MC1

Gate amp board 1

ACCT

-W

9

ACCT

ACCT-U

X52

U V W

FAN control board

CNVDC

10

C1

R4

R3

R1

R2

ACNF1

(Noise Filter)

E

Filter board

CNFG

blue

L2

CNL1CNL2

CNOUT

green

CNIN

blue

C5

ZNR4

SWU3

012

CN15V1

CNDC1

black

CNDR1

bypass outlet temp.detect

at Sub-cool coil

CNVCC1

CNAC2

MF1

CNFAN

red

SW2SW1

1 4

1 6

CNAC3

LED1 operation

LED2 error

CNFG

blue

CNCT2

blue

black

CNTH

green

THHS1

red

7

CNRS1

Power circuit board 1

CNDC2

CN15V2

CNDR2

TB3

(Terminal Block)

M1

M2

SM2M1

TB7

(Terminal Block)

1

1 2

shield

F02

700VDC

2A T

red

white

black

blue

red

white

black

blue

red

black

Motor

(Compressor)

F01

250VAC

2A T

Refer to the service handbook

about the switch operations.

CENTRAL CONTROL

TRANSMISSION LINE

CNRS2

Inverter controller box

Function device

liquid outlet temp.detect

at Sub-cool coil

Discharge pipe temp. detect

OA temp.detect

Pipe temp.detect(Hex outlet)

Choke coil(Transmission)

Thermistor

High pressure switch

4-way valve

Electronic expansion valve

(SC coil)

Solenoid valve

(Heat exchanger capacity control)

Solenoid valve

(Discharge-suction bypass)

Magnetic contactor

(Inverter main circuit)

Crank case heater(Compressor)

Z20

L1,L2

63LS

DC reactor

(Power factor improvement)

63HS

63H1

THHS1

TH5

CN35

TH11

TH8

LEV1

1

THHS5

L3

L2

CNTH

green

1 2

2

3

2

1

1 2

ON

OFF

4

ON

OFF

1 2

4

8

3

L1

1

L3L2L1

2

1

122

1 2

3

1 2 3 4 5

1

9

1

N

123

4

12341

9

2

132

1

CNRS3B

CNTR

Symbol

CN38

black

SV5b

21S4a,b

CH11

MF1

52C1

DCL

SV1

ACCT

1

Name

3

63H1

INDOOR/OUTDOOR

TRANSMISSION LINE

CN04

AC Current Sensor

1

12V

CN51

2

1

W

3

2

V

Function setting

5

1

2

3

1 2 3

4

3

CH11

X03

X08

CN32

X02

CN33

CN36

SV

5b

2

1

21S

4a

21S

4b

2

7

1

78131

1

10

1

10

1

10

1

1103

2

N

L3

F01

250VAC

6.3A T

red

white

black

CNTYP5

CNH

CNTYP4

CN01

CNL

black

CNTYP1

red

CN02

1

R23

63HS

R22

63LS

7

2 1

632 1 3 2 12 1

2 1

U

CNLVB

red

detection

circuit

LEV1

7

L1

5412

2

332

1

black white red

Function setting

detection

circuit

65413

LD2

Maintenance

setting

8

N

red

white

blue

4

2

4 3

2

3

1

8 7 6 5

white

detection

circuit

MF

Fan motor

(Heat exchanger)

W

132

TH7

SV1

shield

PE

L1

TH6

8

1

V

U

X11

123

NOTE:The broken lines indicate field wiring.

X01

1

52

C1

2

Fan motor (Radiator panel)

T01

(Transformer)

black

NIGHT MODE

SNOW

1

L2

1

15

PUHY-P500YGM-A (Connected with PFD series)

black

white

red

LEV1

NOTE:The broken lines indicate field wiring.

Gas pipe temp.detect

(Hex outlet)

TH2

Magnetic contactor(Fan motor)

52F

Overload relay(No.2Compressor)

51C2

Magnetic contactor(No.2Compressor)

52C2

DC Current Sensor

DCCT

Symbol Name

ACCT

DCL

52C1

MF3

CH11,12

21S4a,b,c

SV1,3

SV5b,c

LEV1

TH11,12

TH5

TH6

TH7

TH8

THHS1

63H1,2

63HS

63LS

L1,L2

Z20

AC Current Sensor

DC reactor

(Power factor improvement)

Magnetic contactor

(Inverter main circuit)

Solenoid valve

(Discharge-suction bypass)

Solenoid valve

(Heat exchanger capacity control)

Electronic expansion valve

(SC coil)

Fan motor (Radiator panel)

Crank case heater(Compressor)

4-way valve

Thermistor

Discharge pipe temp. detect

Pipe temp.detect(Hex outlet)

OA temp.detect

liquid outlet temp.detect

at Sub-cool coil

bypass outlet temp.detect

at Sub-cool coil

Radiator panel temp. detect

(Compressor)

High pressure switch

High pressure sensor

Low pressure sensor

Choke coil(Transmission)

Function device

Earth terminal

THHS5

Radiator panel temp. detect(Fan)

Motor

(Compressor)

Fan motor

(Heat exchanger)

Fan motor

(Heat exchanger)

black

white

red

Motor

(Compressor)

black

white

red

white

blue white

red

power selection

connector

detection

circuit

detection

circuit

detection

circuit

Inverter controller box

red

white

black

CNHCNL

black

1

63HS

63LS

332

black white red

2

3

1

123

1

black

red

DS

(Diode stack)

black

white

red

Function setting

LED1 operation

LED2 error

Power circuit board

Gate amp board

Filter

board

T01

(Transfomer)

LED1 operation

LED2 error

FAN control board

Compressor ON/OFF

Trouble

NIGHT MODE

SNOW

Refer to the service handbook

about the switch operations.

Address setting

Function setting

Maintenance

setting

Control circuit board

TB3

(Terminal Block)

TB7

(Terminal Block)

TB1

(Terminal Block)

ACNF

(Noise Filter)

M2

M1

M2

M1

shield

CENTRAL CONTROL

TRANSMISSION LINE

INDOOR/OUTDOOR

TRANSMISSION LINE

Power source

3N~

380/400/415V

50/60Hz

L3NL1

L2

blue

black

white

red

blue

N

1

921

9

1

5

6109

14

13

101413

96512

black

red

black

10

1

SW5

OFFOFF ONOFF ON

OFF OFF ON

ON

LD1

SW4

SW3 SW2 SW1

10

1

10

1

10

1

10

1

DCCT

L3

L2

1

2

S

F12

AC660V

50A F

F11

AC660V

50A F

red

white

black

U

17

W

V MC2

1

321

F01

250VAC

2A T

CNAC2CNCT

12

N

R2

C1

C2

R1

R4

R3

CNDC1

black

CN15V1

CNDR1

CNDC2

ACCT-W

ACCT-U

ACCT

CNDR2

F02

700VDC

2A T

CN15V2

THHS1

CNTH

green

CNFG

blue

CNDC2

CNCT2

blue

CNVCC1

CNFAN

red

CNRS1

CNL1CNL2

CNFG

blue

CNIN

blue

CN41

CNOUT

green

CNINV

CN21

blue

CNS1

blue

CN20

F02

250VAC

6.3A T

CN40

F01

250VAC

6.3A T

CNVDC

CNS2

blue

CNRS3B

CNVCC1

CNRS3A

CN51

CN3S

red

8

210

SWU3

SWU1SWU2

CN52C

yellow

CN32

CN33

CN34

red

CN36

CN35

green

CNTYP5

CNTYP4

R23

R22

CN01

TH11

CNTYP1

red

black

CNTR

CNRS2

4

Z20

L3

3

2

8

1

8

51C2

642

red

3412

U

43

MF2

3

X09

L1

52C1

DCL

N

IPM

P

C4

MC1 V

X52

U

E

C5 ZNR4

X01

1

8

W

2

3

2

X07

1

CNRT1

1

CN13

TH12

52

C1

5

132

1

7

321456

12V

4

3

1

2132121

2

7

154312 321

1

L3

L2

4

45312

CN3D

231

3

1

X03

132

123

X02

X08

W

V

L1 U

L2

L3

63H1

52F

51C2

234

132

L1

12

1

8

561

X05

X06

946

314

2

1

144

SW1

OFF

243

1

ON

6

3412

2

W

SW2

OFF

1

ON

4

V

1

253412

2

1

3

4

1

4

L2

3

CN02

21

78

CNOUT2

56

3

2

CNRT2

CNCH

CN52F

CN51C2

45321

5432

2

11

7

6

X2

X3

5

4

X1

1

13227

CN52C2

blue

3

5

4

3

2

52

C2

1

312

52C2

TH5

TH6

TH7

21S

4a

SV1

SV3

PE

A1 A2

gray yellow

CH12

A2 A1

13 14

brown purple

red

orange

63H2

red

95 96

white black

52C2

21S

4c

V

W

6

CNOUT1

yellow

21321

3

321

CN05

SV

5c

CN04

52F

blue

A2

L1

L2

3

21

Relay board

orange

yellow

red

brown

THHS5

4

A1

741

CNTH

green

4

2

1

321

X01

+

–

+

black

MF3

CNLVB

red

SV

5b

CNAC3

2

1

TH8

red

white

21S

4b

CH11

321

MF1

WVU

321

1

3

2

LD2

1

U

CN38

5

3

black

2

yellow

L1

16

PFD-P250VM-E

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

1

65432

CN51

1

CN52

Dehumidify

ZNR901

DSA1

CN3A

ZNR1

F901

X06 X05

X04

321

2

CN32

321

X01

CN2M

I.B.

1

X07

Z1

Inside section of control box

RC

2

1

2

1

TB15

Failure output

Distant location on/off

Status output

Distant location on/off

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

234515432

1

B2B1BCA2A1

AC

54321

C

IFB

3

L3

A1SB1

L2

L1

X11

1

2

216

5

1

2

PE

N

F1

345

6

3

1

ZNR1

3

1

CN1

DSA1

PE

TB23

TB21

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

65432

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

Terminal bed for distant location on/off

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)

17

PFD-P500VM-E

1.The dotted lines show field wiring.

2.It is wiring for 1 refrigerant system at the time of shipping.

Change wiring and SW2, 3, 4 (No.1&No.2) as this figure in field

when you change it to 2 refrigerant circuit

3.Set up the address of No.1 board in the odd number, and set up the

address of No.2 board in the even number.

But, set up the address of the No.2 board in the No.1 board +1.

4.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.

5.Set up the zone No. (SW14) from 1 to 5 when you connect a concentration

controller.

(Install an indoor unit within 20 units in the all 5 zone.)

6.Mark indicates terminal bed, connector, board insertion connector

or fastening connector of control board.

Note:

SW8

SW4 SW7 SW2

SWC SW5

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

657 4321CN24 CN25

1

2

1

X11

CN7V

Address

(odd)

SW11

(1st digit)

SW12

(2nd digit)

SW14

No.1

CN51

CN52

Dehumidify

13

45

1

2

3

45

2

ZNR901

DSA1

ZNR1

F901

X06 X05 X04X01 X07

CN3A

CN32

CN2M

I.B.1

3212321

1

591513731

CNT

CND

CN90

13

CN33CNP

31

Z1

T

CN3T

31

CN28

21

CN31

12321

CN29

3222

1

11

CN20

CN21

CN60

CN22

21 654

Z3

33P1

SW1SW3

TH24-1

TH21-1

TH22-1

TH23-1

LEV2

LEV1

12345

6654321

AD.B.

6543 126543 12

6543 12

LEV1A

LEV1B

LEV1

2

1

Inside section of control box

RC

2

1

TB15

A1SB1

216

5

DC24~30V

No.1 Indoor unit

Control wiring

LED display(No.1 failure)

LED display(status)

TB5-1

SHIELD

L3

L1

1

3

ZNR1

3

1

CN1

DSA1

S.B.

3

L3

L2

L1

1

2

N

F1

Power supply

3N~

380/400/415V(50Hz)

400/415V(60Hz)

LED display(power supply)

PE

TB2

L5

345

6

Switch(normal/local)

SW9

No1.Failure output

Distant location on/off

No1.Status output

Distant location on/off

No2.Status output

No2.Failure output

Power supply DC30V, AC100/200V

Power supply DC12~24V

LED display(No.2 failure)

DC24~30V

No.2 Indoor unit

Control wiring

LED display(check)

L4

L2

L

54321

S

A2

B2

B2B1BCA2A1

AC

54321

C

IFB

CN54

TB22

CN53

TB21

TB23

SHIELD

TB5-2

3

4

X11

1

2

PE

X12

<note2>

CN3A1CN2M

123

CN32

213

2

123

1

I.B.2

54321

CN52

54321

CN51

Dehumidify

ZNR901

F901

ZNR1

DSA1

X01

X07

X04X05X06

CNP CN33

CN90

CND

CNT

CN3T

12

CN22 CN21CN20

1122

CN29

12321

CN31

12

CN28

531

CN60

1234563113 731 51139

Z2

<note2>

33P2

T

Z3

CN25CN24

12 CN7V

1234567

21

X12

SW5 SWC

SW12

(2nd digit)

SW11

(1st digit)

SW8

Address

(odd)

SW3 SW1SW2SW7SW4

SW14

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

No.2

FAN

over current

detection

51F

Z1

ZNR2

Z2

52F

Z3

TH24-2

TH21-2

TH22-2

TH23-2

51F

52F

MF

NAME

SYMBOL

Surge absorber

DSA1

L5

ZNR1, ZNR2, ZNR901

LED display (No.2 failure)

LED display (status)

LED display (check)

LED display (power supply)

MA Remote controller

RC

TB21

TB15

TB5-1, -2

TB2

IFB

S.B.

AD.B.

I.B.1, I.B.2

MF

Surge absorber board

Switch (outlet/inlet temp.control)

Float switch

Varistor

Transformer

Electronic linear expan.valve

Contactor(fan I/D)

Over current relay (fan I/D)

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 (No.1 failure)

Switch (normal/local)

TH24-1, TH24-2

SW1(I.B.)

SW2(I.B.)

SW3(I.B.)

SW4(I.B.)

SW11(I.B.)

SW12(I.B.)

SW14(I.B.)

SWC(I.B.)

X11, X12

Z1, Z2Z3L1L2L3

L4

SW9

TH23-1, TH23-2

TH22-1, TH22-2

TH21-1, TH21-2

33P1, 33P2

51F

52F

LEV1, 2

T

F1

F901

TB23

TB22

Switch (1st digit address set)

Switch (2nd digit address set)

Fan motor

Indoor controller board

Adapter board

Power source terminal bed

Transmission terminal bed

External input/output board

Transmission terminal bed

Terminal bed for distant location on/off

Terminal bed for distant location on/off

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

Fuse <6.3/6A>

Fuse <5A>

(field supply

and construction)

Power

SW

Indoor unit

control board

Z

1(brown)

5(green)

CN52

The signal input of the dehumidify order is to

connect wiring referring to the bottom figure.

Relay circuit

External input adapter

(PAC-SA88HA)

SW:Defumidify order

Z:Relay (Contact : Minimum applicable load

DC12V 1mA or less)

Distant control panel

Z

How to connect in case of 2 refrigerant circuit.

Remove the LEV1B connector

from AD.B. board, and

connect it to CN60 of

I.B.2 board.

Connect a connector to

CN3A, CN2M of I.B.2

board.

<note2>

65432

1

CN60

654321

CN3A

CN2M

I.B. 2

12321

LEV2

<note2>

How to set up to SW2, 3, 4.

(In case of 2 refrigerant circuit)

PFD-P500VM-E

(at the time of shipping)

ON

654321

ON

65432110987

ON

54321

ON

5432110987

ON

654321

ON

654321

2 refrigerant

circuit

1 refrigerant

circuit

SW2 SW3 SW4

External input-output

board (IFB)

The case of with-voltage input

...

A

The case of no-voltage input

....

B

When using the external input function on the indoor unit

that is connected to a two-refrigerant circuit, connect the

short-circuit plate that is supplied with the unit to the

appropriate terminals on the external input-output board.

ACA1A2BCB1

B2

A

B

TB23

TB21

18

6. Refrigerant Circuit Diagram And Thermal Sensor

PU(H)Y-P250YGM-A

21S4a

21S4b

COMP

O/S

CJ1

CJ2

63HS

63LS

63H

SV1

HEX F HEX B

SV5b

TH8

TH11

TH5

TH6

TH7

CP2 ST8

LEV1

SCC

ST4

ST3

CP1

Drier

ST7

ST6

ACC

BV1

BV2

ST1

ST2

TH23

TH22

19

PUHY-P500YGM-A

21S4a21S4c21S4b

TH6

CP2

CP1

TH11

TH12

COMP

2

Oil

Tank

COMP

1

O/S O/S

CJ3

CJ1

63H2

63H1

63HS

ST7

ST6

ST5

SV1

SV3

CV1 CV2

HEX2b

(B)

HEX1b

(F)

TH5

TH8

SCC

CP3

TH7

ST9

Drier

LEV1 ST8

SV5c

SV5b

HEX2a

(B)

HEX1a

(F)

ST2

ST13 ST12 ST11 ST10

CJ2

63LS

BV2

ACC

BV1

ST1

TH23-1

TH22-1

TH23-2

TH22-2

20

7. System Design

7-1.Refrigerant Piping System

■ Sample connection

■ Pipe selection

■ Amount of refrigerant charge

Refrigerant for extension piping is not included at factory shipment. Add an appropriate amount of refrigerant for each system on site. Write down the size and the length of the piping in each system as well as the amount of added refrigerant on the outdoor unit as a reference for servicing.

■ Calculating the amount of refrigerant to be added

• The amount of refrigerant that is necessary for extension piping is calculated based on the size and the length of the liquid piping.

• Use the following formula to figure out the amount of refrigerant to be added.

• Round up the calculation result to the nearest 0.1 kg. (e.g., If the result is 16.08 kg, round up the .08 to .1 , which

yields 16.1 kg.)

Caution

Charge Liquid Refrigerant

Filling the equipment with gas refrigerant will result in a power loss due to transformation of refrigerant in the tank.

500 model indoor unit :

When ø 15.88 pipes are used and the piping length is 150 m 150(m) x 0.2(kg/m)+4.0kg=34.0kg

✻ Refrigerant charge

calculation

✻ Amount of charged

refrigerant at factory shipment

✻Sample calculation

Outdoor unit model

Charged refrigerant amount(

kg)

9.5P250

22.0P500

Outdoor unit

L

H

A

Outdoor unit

L

H

A

Indoor unit Indoor unit

Liquid pipe size

Total length of the ø 15.88 pipes x 0.2

Liquid pipe size

Total length of the ø 9.52 pipes x 0.06

(m) x 0.2(kg/m)

+

(m) x 0.06(kg/m)

+

Total capacity of connected indoor units

Amount for the indoor unit

P250 model

2.0kg

✻ 2 kg x 2 when connected to a

system with two outdoor units

P500 model

4.0kg

500 model indoor unit : When ø 9.52 pipes are used and the piping length is 80 m

80(m) x 0.06(kg/m)+2.0kg=6.8kg

(Amount for the extension pipe to each outdoor unit)

Farthest piping length(L) Height difference between indoor

and outdoor units (H)

50 m or less (40 m if outdoor unit is below indoor unit, 15 m if outside temperature is 10

˚C or below)

150 m or less in actual length

Allowable piping length Allowable height difference

Outdoor unit model

Liquid pipe size Gas pipe size P250 P500

✻1 Use ø 12.7 pipes when the pipe

length exceeds 90 m.

ø 9.52 ✻1

ø 15.88

ø 22.2

ø 28.58

21

7-2.Control Wiring

Restrictions when the PFD-type indoor units are connected (related to the system)

(1) Specifications of control wiring and maximum length of wiring

Transmission line is a type of control line.When the source of noise is located adjacent to the unit, the use of shield cable as well as moving the unit as far away from the noise source are recommended.

1 Transmission line (M-NET transmission line)

For multiple-refrigerant system

Length of transmission line Facility type

(noise level measurement)

No. of cable 2-core cable Diameter Over 1.25mm

2

Wiring specifications

All types of facilities

n/a

Shield cable CVVS · CPEVS · MVVS

System component

Maximum length: 200m Maximum length of centralized control transmission line and Indoor/Outdoor transmission line via indoor/outdoor units: 500m maximum

Total length of indoor/outdoor transmission line

Cable type

(1) It is necessary to rewrite the S/W on the control circuit board of the outdoor unit connected to the

PFD-type indoor units to the dedicated S/W. If the S/W is rewritten incorrectly, the PFD-type indoor units do not work properly.

· When it is necessary to replace the control circuit board at servicing, the control circuit board must be replaced with the dedicated control circuit board.

(2) The outdoor units on which the S/W is rewritten to the dedicated S/W cannot be connected to the

indoor units other than the PFD-type indoor units. (3) The PFD-type indoor units cannot be connected to the ME remote controller. (4) The address settings must be made on this system. (5) The following functions cannot be selected on the PFD-type indoor units.

1) Switching between automatic power recovery Enabled/Disabled (Fixed to "Enabled" in the PFDtype indoor units)

2) Switching between power source start/stop (Fixed to "Disabled" in the PFD-type indoor units)

(6) The PFD-type indoor units and other types of indoor units cannot be grouped. (7) The following functions are limited when the system controller (such as G-50A) is connected.

1) To perform group operation in the system with two refrigerant circuits (combination of two outdoor units and one indoor unit: P500 model only), the addresses of the controller boards No.1 and No.2 on a indoor unit must be set within a group.

2) The local operation cannot be prohibited with the system controller.

3) When the switches of the PFD-type indoor units are set as follows, the unit ON/OFF operation cannot be made with the system controller.

· When the Normal/Local switching switch is set to "Local"

· When the DipSW1-10 on the control circuit board is set to "ON"

4) The PFD type indoor units cannot be grouped with other types of indoor units.

22

(1) Address setting

7-3.Types of switch settings and setting methods

Whether a particular system requires switch settings depends on its components. Refer to the section “7-4 Sample System Connection” before conducting electrical work. Keep the power turned off while setting the switches. If settings are changed while being powered, the changed settings will not register, and the unit may malfunction.

Symbol Outdoor unit OC Indoor unit

✻ 10HP has only the main controller

Main/sub controllers ✻ IC

Turn off the power to Outdoor unit Indoor and outdoor units

Unit

2 Remote control wiring

MA remote controller ✻ 1

No. of cable 2-core cable

Diameter

0.3

~1.25mm

2

(0.75~1.25mm2)

✻ 2 ✻ 3

Wiring specifications

VCTF · VCTFK · CVV · CVS · VVR · VVF · VCT

Maximum length: 200 m

Total Length

✻ 1: “MA remote controller” includes MA remote controller, Simple MA controller, and wireless remote controller. ✻ 2: Cables with a diameter of 0.75mm2 or smaller recommended for easier handling. ✻ 3: When connecting to Simple MA controller terminal, use a cable with a diameter within the range shown in

the parenthesis.

Cable type

The need for address settings and the range of address setting depend on the configuration of the system. Refer to “Sample System Connection”.

Symbol

Unit or controller

Main

· SubIndoor unit

MA remote controller

Address

setting range

IC

01~50

(Note 1)

Address setting method

Factory setting

No address setting required.

00

MA

Outdoor unit OC

Main

51~100

Model

In case of 10HP system or 20 HP system with one refrigerant circuit, assign an odd number starting with "01

". In case of 20HP system with two refrigerant circuits, assign a sequential odd number starting with "01" to the upper indoor controller, and assign "the address of the upper indoor controller + 1" to the lower indoor controller. (For the system with one refrigerant circuit, the lower circuit board is not used.)

Add 50 to the address assigned to the indoor unit connected the system with one outdoor unit.

(The main/sub switch must be configured if two remote controllers are connected to the system or if the indoor units are connected to different outdoor units.)

(Note1) If a given address overlaps any of the addresses that are assigned to other outdoor units, use a different, unused address

within the setting range.

23

(5)

Connection of two refrigerant circuits

When two refrigerant circuits are connected on site, make the switch settings on the controller circuit board following the instructions described in the installation manual for the indoor unit.

(4) Setting the MA “Sub” controller

When using two remote controllers or running two indoor units as a group, one of the controllers must be set to “Sub” controller. ✻ No more than two remote controllers can be connected to a group.

(Factory setting:“Main”) Set the controller according to the following procedure.Refer also to the instructions manual supplied with the MA remote controller.

Remote controller bodyDip switches

1ON234

Screwdriver

Remove the cover on the remote controller

Set Dip Switch No.1 on the remote controller to “OFF” (Main to Sub)

Insert a flat-head screwdriver in the groove shown in the picture, and move the screwdriver in the direction shown in the arrow.

(3)

Choosing the temperature detection spot by indoor unit (Factory Setting: SWC “Standard”)

When using the suction temperature sensor, set SWC to “Option.” (The discharge temperature sensor is supplied as standard specification.)

(2)

Power supply switch connector connection on the outdoor unit

(Factory setting:The male power supply switch connector is connected to CN41.)

System

configuration

Power supply switch connector connection

Not connected

Not grouped

Grouped

Required

Grouped

/Not grouped

Grouped

/Not grouped

Grouped

/Not grouped

Not required

Leave the male connector on CN41 as it is. (Factory setting)

System in which indoor

units connected to one

outdoor unit

Connection to

the system

controller

With connection

to indoor-outdoor

transmission line

With connection

to transmission

line for centralized

control

Power supply unit

for transmission

lines

Not required

(Powered from

the outdoor unit)

Grouping the indoor

units connected to

different outdoor

units

System in which indoor

units connected to

multiple outdoor units

Disconnect the male connector from the female power supply switch connector (CN41) and connect it to the female power supply switch connector (CN40) on only one of the outdoor units (OC). *Connect the S (shielded) terminal on the terminal

block (TB7) on the outdoor unit whose male connector on CN41 was disconnected and connected to CN40 to the earth terminal ( ) on the control box.

✻ When the system controller is connected to the indoor/outdoor transmission line and the power is supplied from the outdoor unit,

do not to turn off the outdoor unit. If its power supply is cut, the power is not supplied to the system controller, and the functions will not work.

7-4.Sample System Connection

24

(1) An example of a system to which an MA remote controller is connected

Control Wiring Diagram

Notes

Maximum Allowable Length

Wiring and Address Setting

OC

TB3

TB7

M1 M2 M1 M2

S

51

IC

TB5-1 A1B1S

01

TB5-2 A2 B2

S

02

AB

TB15 1

2

MA

NO

L1 Leave the male connector on CN41 as it is.

1.

Leave the male connector on the female power supply switch connector (CN41) as it is.

2. Grounding to S terminal on the terminal block for transmission line for centralized control (TB7) is not required.

3. Although two indoor controllers (controller circuit boards) are equipped inside the indoor unit (20HP), the board on No.2 side (lower side) is not used. Do not connect wiring to the lower controller circuit board.

4. The outdoor unit cannot be connected to the units other than the PFD series indoor units.

<a. Indoor/Outdoor transmission line>

Connect M1, M2 terminals of the indoor/outdoor transmission line terminal block (TB3) on the outdoor unit (OC) and A1, B1 terminals of the indoor/outdoor terminal block (TB5-1) on the indoor unit (IC). (Non-polarized 2-core cable) *Only use shielded cables.

[Shielded cable connection]

Connect the earth terminal of the OC and S terminal of the IC terminal block (TB5-1).

<b. Switch setting>

Address setting is required as follows.

Main Controller Sub Controller

Settings to be made with the sub/main switch

IC

OC

1

2

Notes

3

MA MA

51~100

01

~50

01

~50

00

Setting not required.

Sub Controller

✻ One indoor controller (controller circuit board)

is equipped in the indoor unit (10HP), and two indoor controllers (controller circuit boards) are equipped in the indoor unit (20HP).

<a. Indoor/Outdoor transmission line>

Maximum Length (1.25mm

2

or more)

L1 200m

Steps

Unit or controller

Main

Sub

Indoor unit

MA remote controller

Address

setting range

Address setting method

Outdoor unit

Factory

setting

Main

Assign a sequential odd number starting with "01" to the upper indoor controller.

Add 50 to the address assigned to the indoor unit connected to the system with one outdoor unit.

Assign sequential numbers starting with the address of the main unit in the same group. (Main unit address +1)

1 System connected to one outdoor unit

25

Control Wiring Diagram

Notes

Maximum Allowable Length

Wiring and Address Setting

NO

Leave the male connector on CN41 as it is.

1. Assign a sequential number to the outdoor unit.

2. Do not connect the terminal blocks (TB5) of the indoor units connected to different outdoor units.

3. Disconnect the male connector on the controller board from the female power supply switch connector (CN41), and connect it to the female power supply switch connector (CN40) on only one of the outdoor units.

4. Provide grounding to S terminal on the terminal block for transmission line for centralized control (TB7) on only one of the outdoor units.

5. When the power supply unit is connected to the transmission line for centralized control, leave the male connector on the female power supply switch connector (CN41) as it is at factory shipment.

6.

The outdoor unit cannot be connected to the units other than the PFD series indoor units.

<a. Indoor/Outdoor transmission line>

Connect M1, M2 terminals of the indoor/outdoor transmission line terminal block (TB3) on the outdoor unit (OC) and A1, B1 terminals of the indoor/outdoor terminal block (TB5-1) on the indoor unit (IC). (Non-polarized 2-core cable) *Only use shielded cables.

[Shielded cable connection]

Connect the earth terminal of the OC and S terminal of the IC terminal block (TB5-1).

<b. Transmission line for centralized control>

Daisy-chain terminals M1 and M2 on the terminal block for transmission line for centralized control (TB7) on each outdoor unit (OC). Disconnect the male connector on the controller board from the female power supply switch connector (CN41), and connect it to the female power supply switch connector (CN40) on only one of the outdoor units. *Only use shielded cables.

[Shielded cable connection]

To ground the shielded cable, daisy-chain the S-terminals on the terminal block (TB7) on each of the outdoor

units. Connect the S (shielded) terminal on the terminal block (TB7) on the outdoor unit whose male connector on CN41 was disconnected and connected to CN40 to the earth terminal ( ) on the electric box.

<c. Switch setting>

Address setting is required as follows.

Main Controller Sub Controller

Settings to be made with the sub/main switch

IC

OC

1

2

Notes

3

MA MA

51~100

01

~50

01

~50

00

Setting not required.

Sub Controller

✻ One indoor controller (controller circuit board)

is equipped in the indoor unit (10HP), and two indoor controllers (controller circuit boards) are equipped in the indoor unit (20HP).

<a. Indoor/Outdoor transmission line>

Maximum Length (1.25mm

2

or more)

L1, L2 200m

<b. Transmission line for centralized control>

Maximum Length via outdoor unit (1.25mm2 or more)

L1 + L31 + L2 500m

Steps

Unit or controller

Main

Sub

Indoor unit

MA remote controller

Address

setting range

Address setting method

Outdoor unit

Factory

setting

Main

Assign a sequential odd number starting with "01" to the upper indoor controller.

Add 50 to the address assigned to the indoor unit connected to the system with one outdoor unit.

Assign sequential numbers starting with the address of the main unit in the same group. (Main unit address +1)

OC

TB3

TB7

M1M2

S

51

IC

TB5-1

A1 B1

S

01

TB5-2

A2B2

S

02

OC

TB3

TB7

M1M2

S

52

AB

TB15

1

2

MA

L31

L1

L2

Connection

Disconnect the male power supply connector from CN40 and connect it to CN41.

(1) An example of a system to which an MA remote controller is connected

2 System connected to two outdoor units

26

(1) An example of a system to which an MA remote controller is connected

Control Wiring Diagram

Notes

Maximum Allowable Length

Wiring and Address Setting

NO

Leave the male connector on CN41 as it is.

OC

TB3

TB7

M1M2

S

51

IC

TB5-1

A1 B1

S

01

TB5-2

A2B2

S

02

AB

TB15

1

2

MA(Main)

AB

MA(Sub)

L1

A1 B2

MA

m1

m2

1.

Leave the male connector on the female power supply switch connector (CN41) as it is.

2. Grounding to S terminal on the terminal block for transmission line for centralized control (TB7) is not required.

3. Although two indoor controllers (controller circuit boards) are equipped inside the indoor unit, the board on No.2 side (lower side) is not used. Do not connect wiring to the lower controller circuit board.

4.

No more than two MA remote controllers (including both main and sub controllers) can be connected to a group of indoor units. If three or more MA remote controllers are connected, remove the wire for the MA remote controller from the terminal block (TB15).

5.

The outdoor unit cannot be connected to the units other than the PFD series indoor units.

<a. Indoor/Outdoor transmission line>

Same as (1) 1.

<b. MA remote controller wiring>

[When two remote controllers are connected to the system]

When two remote controllers are connected to the system, connect terminals 1 and 2 of the terminal block (TB15) on the indoor unit (IC) to the terminal block on the MA remote controllers (option). *Set the Main/Sub switch on the connected MA remote controllers (option) to SUB. (See the installation manual for the MA remote controller for the setting method.)

<c. Switch setting>

Address setting is required as follows.

Main Controller Sub Controller

Settings to be made with the sub/main switch

IC

OC

1

2

Notes

3

MA MA

51~100

01

~50

01

~50

00

Setting not required.

Sub Controller

✻ One indoor controller (controller circuit board)

is equipped in the indoor unit (10HP), and two indoor controllers (controller circuit boards) are equipped in the indoor unit (20HP).

<a. Indoor/Outdoor transmission line>

Same as (1) 1.

<b. MA remote controller wiring>

Maximum overall length (0.3-1.25mm

2

or more)

m1 + m2 200m

Steps

Unit or controller

Main

Sub

Indoor unit

MA remote controller

Address

setting range

Address setting method

Outdoor unit

Factory

setting

Main

Assign a sequential odd number starting with "01" to the upper indoor controller.

Add 50 to the address assigned to the indoor unit connected to the system with one outdoor unit.

Assign sequential numbers starting with the address of the main unit in the same group. (Main unit address +1)

3 System in which two MA remote controllers are connected to one indoor unit

27

Control Wiring Diagram

Notes

Maximum Allowable Length

Wiring and Address Setting

1.

Leave the male connector on the female power supply switch connector (CN41) as it is.

2. Grounding to S terminal on the terminal block for transmission line for centralized control (TB7) is not required.

3. Although two indoor controllers (controller circuit boards) are equipped inside the indoor unit, the board on No.2 side (lower side) is not used. Do not connect wiring to the lower controller circuit board.

4.

No more than two MA remote controllers (including both main and sub controllers) can

be connected to a group of indoor units. If three or more MA remote controllers are connected, remove the wire for the MA remote controller from the terminal block (TB15).

5.

The outdoor unit cannot be connected to the units other than the PFD series indoor units.

<a. Indoor/Outdoor transmission line>

Same as (1) 1.

<b. MA remote controller wiring>

[Group operation of indoor units]

To perform a group operation of indoor units (IC), daisy-chain terminals 1 and 2 on the terminal block (TB15) on all indoor units (IC). (Non-polarized 2core cable) *Set the Main/Sub switch on one of the MA remote controllers to SUB.

<c. Switch setting>

Address setting is required as follows.

Main Controller Sub Controller

Settings to be made with the sub/main switch

IC

OC

1

2

Notes

3

MA MA

51~100

01

~50

01

~50

00

Setting not required.

Sub Controller

✻ One indoor controller (controller

circuit board) is equipped in the indoor unit (10HP), and two indoor controllers (controller circuit boards) are equipped in the indoor unit (20HP).

Steps

Unit or controller

Main

Sub

Indoor unit

MA remote controller

Address

setting range

Address setting method

Outdoor unit

Factory

setting

Main

Assign a sequential odd number starting with "01" to the upper indoor controller.

Add 50 to the address assigned to the indoor unit connected to the system with one outdoor unit.

Assign sequential numbers starting with the address of the main unit in the same group. (Main unit address +1)

OC

TB3

TB7

M1M2

S

51

IC

TB5-1 A1

B1 S

01

TB5-2

A2 B2 S

02

AB

TB15

1

2

MA(Main) MA(Sub)

L1 Leave the male connector on CN41 as it is.

OC

TB3

TB7

M1M2

M1 M2

S

53

IC

TB5-1

A1 B1 S

03

TB5-2

A2 B2 S

04

AB

TB15

1

2

L1 Leave the male connector on CN41 as it is.

m1 m2

m3

<a. Indoor/Outdoor transmission line>

Same as (1) 1.

<b. MA remote controller wiring>

Maximum overall length (0.3-1.25mm2 or more)

m1 + m2 + m3 200m

(1) An example of a system to which an MA remote controller is connected

4 System in which two indoor units are grouped with the MA remote controller

28

(2) System with MA remote controller and G-50A

Control Wiring Diagram

Notes

Maximum Allowable Length

Wiring and Address Setting

1. Be sure to use odd numbers to set the address for indoor units (10 HP and 20HP connected to the one outdoor unit).

2. To set the indoor unit address for 20 HP connected to two outdoor units, use odd numbers for the top controllers and use even numbers for the bottom controllers (Main controller plus 1).

3. Use the power supply switch connector (CN41) on the outdoor unit as is.

4. It is not necessary to ground the S terminal of transmission line terminal board for centralized controller on the outdoor unit.

5 No more than two main/sub remote controllers can be connected to the indoor unit in

the same group. When more than two remote controllers are present in the system, disconnect MA remote controller from TB15 in the indoor unit.

6. Put both types of the addresses for P500-type indoor units in the same group when setting groups for indoor units with system controller (ex. G-50A).

<a. Indoor/Outdoor transmission line>

Same as (1) 1.

<b. Transmission line for centralized control>

Daisy-chain terminals M1 and M2 on the terminal block for transmission line for centralized control (TB7) on each outdoor unit (OC). *Only use shielded cables.

[Shielded cable connection]

To ground the shielded cable, daisy-chain the S-terminals on the terminal block (TB7) on each of the outdoor units.

<c. Switch setting>

Address setting is required as follows.

<a. Indoor/Outdoor transmission line>

L1, L2, L3 200m

<b. Transmission Line for Centralized Control >

L31 + L32 + L33 + L34 + L3 500m L1 + L31 + L34 + L3 500m

<c. MA Remote Controller Line >

Total Length (0.3 ~ 1.25mm2)

m1 200m

Main Controller Sub Controller

Settings to be made with the sub/main switch

IC

OC

1

2

Notes

3

MA MA

51~100

01

~50

01

~50

00

Setting not required.

Sub Controller

Steps

Unit or controller

Main (10HP, 20HP)

Sub (20HP)

Indoor unit

MA remote controller

Address

setting range

Address setting method

Outdoor unit

Factory

setting

Main

Assign a sequential odd number starting with "01" to the upper indoor controller.

Add 50 to the address assigned to the indoor unit connected to the system with one outdoor unit.

Assign sequential numbers starting with the address of the main unit in the same group. (Main unit address +1)

NO

MA

TB15

12

AB

OC

TB3

TB7

M1

M1M2 S

53

IC

MA

TB5-1

A1B1S

03

TB5-2

A2B2S

TB15

12

AB

04

OC

TB3

TB7

M1M2

S

54

OC

TB3

TB7

M1M2

M2

M1M2S

51

IC

TB5-1

A1B1S

01

L1

Use CN41 as is.

Power Supply

ABS

G-50A

ABS

L32L33

Option

DC power supply line (DC12V)

L34

m1

L2

L3

m1

Use CN41 as is.

✻There is one indoor controller board inside indoor unit.

✻There are two indoor controller boards inside indoor unit.

L31

1 System with multiple indoor units (10HP, 20HP)

29

7-5.External input/output specifications

(1) Input/output specifications

Function

Usage Signals

Function

Usage Signal

Input

Start/stop Turning

ON/OFF the indoor unit

· Pulse [Factory setting: Dip SW1-9 ON] (a-contact with voltage/without voltage) ✻1

Power Source: DC12

~24V Electrical Current: Approximately 10mA (DC12V)

Sending a command to perform dehumidification with priority

Level Refer to the wiring diagram <Dehumidification command> shown on the page31.

· Level [Dip SW1-9 OFF]

Output

No.1 Operation Status

Obtaining signals indicating operation status of indoor units in each refrigerant circuit.

Relay a-contact output DC 30V or AC 220

~240V

Standard Current : 1A Minimum Current : 1mA

No. 1 Error Status

Obtaining signals indicating error status of indoor units in each refrigerant circuit.

No. 2 Operation Status

Obtaining signals indicating operation status of indoor units in each refrigerant circuit.

No. 2 Error Status

✻

✻ 20HP only

Obtaining signals indicating error status of indoor units in each refrigerant circuit.

over 200ms

(Pulse powering time)

over 200ms

(Pulse interval)

✻1 Use minute-current contact (DC12V 1mA)

Dehumidi-

fication

signal

Short: operate Open: stop

30

(2) Wiring

External input/output board

Power Source for Display No.1 Operation Status No.1 Error Status

✻ No.2 Operation Status

✻ 20HP only

✻ No.2 Error Status

Common Stop/Start

Input with voltage

Input without voltage

Relay Contact Point Output

Stop/Start

External power source

Connection to terminal board Connection with connectors

L1 L2 L3 L4

SW12

(✻1) Short Circuit plate

SW11

CN53

1 2 3 4 5

TB21

TB22

TB23

XA XB

XC

XE

XD XE

XD

XC

XB

XA

COM

1 2

BC

B1 B2

AC

A1

(✻1) Short Circuit plate

A2

3 4 5

CN54

(✻1) For instructions on how to

install the short-circuit plate, refer to "Caution on using the external input function" shown on the next page.

Maximum : 100 m

DC12~24V Electrical current input (per contact) Approximately 10mA (DC12V)

SW12

Remote start/stop switch Each pressing of the SW (Pulse input) switches between ON and OFF.

Remote start/stop ✻ Each pressing of the SW (Pulse input) switches

between ON and OFF.

External power source

Contact: Minimum applicable load DC12V 1mA

Contact rating DC12V 0.1A and over

SW11

DC30V or less 1A AC220-240V 1A

No.1 Operation Status Indicator LampL1 No.1 Error Status Indicator LampL2

Power supply for displays

No.2 Operation Status Indicator LampL3 No.2 Error Status Indicator LampL4

Relay (Permissible Electrical Current: 10mA

~1A)

XA

~XE

● Setting on the Indoor Unit

Confirm the following setting when using external input.

1 No.1, No.2 Controller board Dip SW 3-8: ON (Factory Setting: ON; External input will not be available when OFF.) 2 No.1, No.2 address board Dip SW 1-10: OFF (Factory Setting: OFF; External input will not be available when ON.) 3 Normal/Local switch inside the unit controller box is set to

“Normal.” (Factory Setting: Normal; External input will not be

available when it is set to

“Local.”)

31

● Caution on using the external input function (20HP only)

54321COM

B2B1BCA2A1AC

TB23

TB21 TB22

CN53 CN54

External input-output board

Short-circuit plate

External input-output board

54321COM

B2B1BCA2A1AC

TB23

TB21 TB22

CN53 CN54

Short-circuit plate

External input

· Connecting the short-circuit plate

External input

When using the external input function on the indoor unit that is connected to a two-refrigerant circuit, connect the short-circuit plate that is supplied with the unit to the appropriate terminals on the external input-output board. Without the short-circuit plate, the unit will not function properly. Don’t connect the short-circuit plate in case of a one-refrigerant circuit.

Caution

1 Brown

SW: Dehumidification command Z : Relay

Contact: Minimum applicable load DC12V 1mA

Contact rating DC12V 0.1A and over

Relay power supply

Indoor unit controller circuit board

Adapter for remote display (PAC-SA88HA) Relay circuit Remote controller board

Z

SW

CN52

5 Green

Z

32

(3) Wiring Method

1 Check the indoor unit setting (Refer to 7-5.(2) Wiring ) 2 When using the external output function, connect each signal line to External output Terminal (TB22)

on the unit, depending on the usage.

3 When using external input function, peal the outer layer of the signal line off, and connect it to external

input terminal (TB21 or TB23) on the unit, depending on the usage.

54321COM

B2B1BCA2A1AC

TB23

TB21 TB22

CN53 CN54

✻1 ✻1

Fix the wire on the highvoltage (AC220-240V) clamp. Pull the wire through the hole for transmission line to outside the unit. ✻3

Fix the wire on the lowvoltage (below DC30V) clamp. Pull the wire through the hole for transmission line to outside the unit. ✻2

To CN51 of No.1 board

To CN51 of No.2 board

Wiring inside the unit

Wiring On Site

✻1 For instructions on how to install the short circuit plate on the 20HP indoor unit, refer to "Caution on using the

external input function" shown on the previous page.

✻2 Do not bundle with high-voltage (AC220-240V) wire, since noise interference from such wire may cause the

unit to malfunction.

✻3 Do not bundle with minute-voltage (DC30V or below) wire, since noise interference from such wire may cause

the unit to malfunction.

Caution

1) Wiring should be covered by insulation tube with supplementary insulation.

2) Use relays or switches with IEC or equivalent standard.

3) The electric strength between accessible parts and control circuit should have 2750V or more.

4) TB21 is a terminal specifically for No-voltage contact point input. Do not apply voltage to TB21, since it must result in malfunction of indoor unit controller board.

5) TB23 is specifically for contact point input with voltage. Check the polarity before connecting to avoid damage to the unit.

6) Keep the wires on the input side and on the output side away from each other when using AC220-

240V as a power source for displays.

7) Keep the length of the extension part of external signal line under 100m.

8) 20HP is shipped with B1 and B2 terminals of TB21 and A1 and A2 terminals of TB23 short-circuited respectively. Do not eliminate this feature. If it is eliminated, the units in one of the two refrigerant circuits may not operate.

33

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

Filter

Free-access top floor

Ceiling

Computer

This system is installed by building a floor over an existing floor and using the space between these two floors as an air-conditioning duct. This system has the following characteristics:

1 The temperature and humidity can efficiently and reliably be controlled, since the air-conditioned air is

sent directly to the machine.

2 It provides a comfortable environment for the operator, since the air can be conditioned to best suit the

needs of the operator and machines.

3 It is favorable in terms of appearance because the air-conditioning duct is out of sight.

4 The location of the duct is irrelevant when considering adding new machines or rearranging the existing

machines, since the entire floor serves as the air duct.

(1) Unlike plenum ventilation and overhead-duct type conditioners, since the conditioned air is not mixed

with the air in the room, the air that comes out of the unit has to meet the predetermined conditions (constant temperature/constant humidity) at the time the air exits the unit.

Close attention must be paid to the auto-controlling system.

(2) Dust in the duct space (between the free-access top floor and the existing floor) must be thoroughly

removed before installing the unit.

(3) Since the existing floor is cooled by the unit, it may produce dews on the ceiling of the room down

below.

Air-conditioner for computer room is designed to maintain a constant room temperature and humidity. For underfloor air supply systems, providing air that meets predetermined requirements is a must.The compressor installed in this unit runs year around.The capacity controlled compressor regulates the outlet air temperature (or inlet air temperature) depending on the load change.The humidifier (Configure to Order) installed in this unit humidifies a room to a target humidity, and regulates the humidity.With priority dehumidification control (a dehumidifier must be installed on site), a room is dehumidified to a target humidity. Since the reheat function is not equipped, the room temperature may drop below the predetermined temperature due to a load inside the room.Therefore, the absolute humidity drops whereas the relative humidity may not drop to a target humidity.

Caution

34

8-3 Step-by-Step Plan for the Implementation of the Air-Conditioning

Basic Conditions

Securing Necessary Rooms

Decision to Install the Air-Conditioning System

Selecting the AirConditioner Model

Selecting the Controllers

Total System Air-conditioning operation panel (secure individual operation circuit),

Auto Controller (temperature and humidity indicator/recorder), management, safety, laws, maintenance, earthquake proof, anti-vibration (floor load, anti-vibration device), noise control, etc.

Calculating the Load

Setting the Conditions for the Room

Temperature/humidity Condition

Purpose Making decisions on the computer system

Accommodates possible future expansion (ensuring the acquisition route) Operation schedule

Back-up system (in case of breakdowns, power outage, water-supply cut offs etc.) Air conditioning methods (continuous, floor-duct type etc.)

Computer room, CVCF room, MT Disk Storage room Supplementary computer room, system surveillance room

Programmer room, operator room Battery room, transformer room

35

8-4 Conditions for the Installation of Computer-Room Air Conditioners

Computer

Fan

Air conditioner

Air intake

Free-access floor

Air discharge

(1) Outdoor Temperature and Humidity

Generally the values set for general air conditioners are used, although the value higher than the maximum outdoor temperature and humidity may be set for devices like computer-room air conditioners that must keep the air temperature and humidity under predetermined levels.

(2) Indoor Temperature and Humidity

There is a wide range of conditions set by different computer manufacturers, and the conditions need to be set in consultation with the manufacturers.The most basic conditions include keeping dew condensation and static electricity from forming. It is also necessary to keep the room free of dust to ensure a smooth operation of the computer.

(3) Matching the Volume of Air Flow

It is possible to use the fan on the computer to cool the room.This controlling method requires a certain volume of cold air in proportion to the amount of heat produced by the device.The inlet panel is located at the bottom of the unit, and the exhaust pipe is located either on the ceiling, front and back, or on the side.

(4) Considering a Back-up Air Conditioning System

When the system is not allowed to stop at all, a back-up system is necessary. There are several different options for a back-up as the following:

1 Installing two sets of air conditioning systems necessary for the computer. 2 Utilizing regular office air conditioners (for people) 3 Using one of the units as a back-up

1 is used infrequently due to high costs involved. 2 involves many technical problems such as the

difference between preset conditions for computer rooms and office rooms. In general, 3 is a preferred method. If 3 is chosen, the unit method (package method) is more economical than the central method.

36

8-5 Setting the Air conditioners

20.9kW 5

20W/m

2

60Hz

Computer-generated heat Number of workers Lighting

Temperature and humidity Frequency

Indoor ˚CDB/Indoor WBT : 24˚C/17˚C

˚CDB of the air going into the computer : 18˚C

(1) Air-Conditioning Load

(2) Sample Selection of Air Conditioners

(2-1) Conditions

Windows Inside Measurement Surroundings

(W: 4.5m, H: 1.5m) ✕ 2

Ceiling height 2.2m

Upstairs room, downstairs room, heat and air conditioning

(2-2) Building Conditions

1 Coefficient of Overall Heat Transmission U (W/m2·K)

Summer 3.6, Winter 3.8

2.05

Summer 5.93, Winter 6.5

Floor (free access)

Outer Walls Inner Walls

Ceiling

Floor Windows

Downward convection 3.36, upward convection 3.3

Downward convection 3.05, upward convection 4.56

Downward convection 2.42, upward convection 3.3

2 Internal Load

1 Once the floor plan is made and the conditions for the air-conditioning system are set, air conditioning

capacity has to be determined by calculating the load.

2 Unlike the outdoor air, computer load remains constant throughout the year.However, it is possible

that there are considerable fluctuations within a day. This is due to the fact that, depending on the time of the day, there are changes in the number of computers that are turned on and that the different computer systems are in operation.

3 If there is a plan to expand the current computer system in the future, it is important to include the

load for the units to be added in the future when calculating the thermal load because it is practically impossible to keep the computers off for days on end during the installation of the new units.

4 The following items need to be checked before calculating the unit capacity:

· Floor area of the computer room (m2)

· Total quantity of heat generated by computers

Number of People in the Room 5 Lighting 20W/m

2

Calculator 20.9kW Draft 0.2 times/h

3 Volume of Outdoor Air Intake

25m3/h·person

Window

37

(2-3) Calculating the Load and Selecting a Model

1 Load (in the summer with air-conditioning)

2 Necessary Air Circulation

3 Model Selection

< Sensible Heat > SH

< Latent Heat > LH

Total load is 28.8kW

Computer Lighting Number of people in the room Infiltration draft Outer wall (heat transmission) Windows (radiation) Windows (heat transmission) Inner wall(heat transmission) Outside air

1,800W

5 persons ✕ 64 (U)

(0.2 times/h) 39.6m

3

✕ 0.336 ✕ 8

8.5m

2

✕ 3.6 ✕ 8

13.5m

2

✕ 0.65 ✕ 188

13.5 ✕ 5.93 ✕ 8

61.6 ✕ 2.05 ✕ 4

125m

3

✕ 0.336 ✕ 8

20.9 kW

1.8 kW

0.32 kW

0.11 kW

0.25 kW

1.91 kW

0.64 kW

0.5 kW

0.34 kW

26.8 kW

Total

Infiltration draft Number of people in the room Outside air

39.6 ✕ 834 ✕ 0.0117 5 persons ✕ 82

125m

3

✕ 834 ✕ 0.0117

0.39 kW

0.41 kW

1.22 kW

2.0 kW

Total

26800

0.336 ✕ (24 -18)

V = ÷ 60 = 221m3/min

Calculate the temperature difference by setting the outdoor temperature;then, calculate hourly loads. The chart shows the result of a calculation, supposing that the system reaches its highest load at 12 o'clock. Outdoor temperatures in this example Summer : 32˚CDB relative humidity 60%

Winter :-2˚CDB relative humidity 42%

PUHY-P500YGM-A, PFD-P500VM-E type Indoor ˚CDB 24˚C / Indoor ˚CWB 17˚C outdoor ˚CDB 32˚C Capacity of the Moment 54.3kW SHF = 0.92 Capacity of Sensible Heat 54.3

✕ 0.92 = 49.9/kW

Standard Air-Flow Volume: 320m

3

/min can be accommodated with PUHY-P500YGM-A and PFD-P500VM-E.

38

8-6 Automatic Control of the Computer Room

✻1✻2

< Outdoor Unit >

Free-Access Floor

< Indoor unit >

Suction temperature sensor

Discharge temperature sensor

RA

SA

TB3

Controller

Terminal Bed for External Input/Output

Remote Controller

Example PFD-P500VM-E automatically controls the cooling temperature with a built-in controller. (suction temperature or discharge temperature control) This unit is designed for high sensible-heat specifications, and it does not include a humidifier or a dehumidifier.Install such components as necessar y.

✻1 Bold lines in the diagram indicate refrigerant piping (gas/liquid).

This system consists of single refrigerant circuit.

✻2 Indicates TB3-type transmission line used to communicate with the indoor unit.

This system is made up of single circuit.

39

9. Maintenance/Inspection

9-1. Maintenance/Inspection Schedule

IndoorOutdoor

Fan Motor

6 months

40000 hours

Yes Yes

Yes

Yes Yes

Yes Yes Yes

Yes

Yes Yes Yes Yes

Bearing

6 months

40000 hours

Fan Belt

6 months

8000 hours

Air Filter

3 months

5 years

Yes

Drain Pan

6 months

8 years

Add lubricant once a year Disposable parts

Maintenance schedule changes depending on the local conditions

Drain Hose

6 months

8 years

Linear Expansion Valve

1 year

25000 hours

Heat Exchanger

1 year

5 years

Float Switch

6 months

25000 hours

Display Lamp (LED)

1year

25000 hours

Compressor

6 months

40000 hours

Fan motor

6 months

40000 hours

Linear Expansion Valve

1 year

25000 hours

Heat Exchanger

1 year

5 years

Pressure Switch

1 year

25000 hours

Inverter Cooling Fan

1 year

40000 hours

Parts

Check every

Replace after

Daily check

Periodically check

Remarks

Yes

4-way valve

1 year

25000 hours

Unit

Having the units inspected by a specialist on a regular basis, in addition to regular maintenance such as changing the filters, will allow the users to use them safely and in good condition for an extended period of time. The chart below indicates standard maintenance schedule.

(1) Appro ximate Long evity of Various Part s

The chart shows an approximate longevity of parts. It is an estimation of the time when old parts may need to be replaced or repairs need to be made. It does not mean that the parts must absolutely be replaced (except for the fan belt). Please note that the figures in the chart do not mean warranty periods.

(2) Notes

The above chart shows a maintenance schedule for a unit that is used under the following conditions:

A. Less than 6 times per hour of compressor stoppage B.The unit stays on 24 hours a day.

Shortening the inspection cycle may need to be considered when the following conditions apply:

When used in high temperature/high humidity area or when used in a place where the temperature

and/or humidity fluctuate greatly

When plugged into an unstable power source (sudden change in voltage, frequency, wave distor-

tions) (Do not exceed the maximum capacity.)

When the unit is installed in a place where it receives vibrations or major impacts. When used in a place with poor air quality (containing dust particles, salt, poisonous gas such as

sulfuric acid gas and sulfuric hydrogen gas, oil mist).

Even when the above maintenance schedule is followed, there could be unexpected problems that

cannot be predicted.

Holding of Parts

We will hold parts for the units for at least 9 years after the termination of the production of the unit, following the standards set by the ministry of economics and industries.

1

2

3 4

40

(3) Details of Maintenance/Inspection

.

Check for unusual noise

.

Measure the insulation resistance

. Check for excessive slack . Check for wear and tear . Check for unusual noise

.

Check for unusual noise

.

Free of unusual noise

.

Insulation resistance over 1M

.

Resistance (30~40N/belt)

.

Adequate amount of slack=5mm

.

Belt length=no longer than

102% of the original length

.

Free of wear and tear

.

Free of unusual noise

.

Free of unusual noise

Replace when insulation resistance is under 1M

.

Check for clogging of the drainage system

.

Check for loosened bolts

.

Check for corrosion

.

Check for clogging of the drainage system

.

Chec

.

Check the drainage of the drain

trap

k for corrosion

.

Clean, free of clogging

.

Free of loose screws

.

No major disintegration

Clean if dirty or clogged Tighten bolts Replace if extremely worn

.

Perform an operation check using the operation data

.

Adequately controls the air

temperature

Replace if malfunctioning

.

Check for torn wire, fraying, and unplugged connectors

.

Check insulation resistance

.

No frayed or cut wires or

unplugged connectors

.

Insulation resistance over 1M

Replace when cut or shorted, when the insulation resistance goes below 1M , or if there is a history of abnormal operation

.

Check for unusual sound

.

Measure insulation resistance

.

Look for abnormal history

.

Free of unusual sound

.

Insulation resistance over 1M

.

No heatsink overheat protection

(4230,4330) on the report

Replace when producing unusual sounds, when insulation resistance goes under 1M , or if there is a history of abnormal operation.

.

Perform an operation check using the operation data

.

Adequately controls the air

temperature

Replace if malfunctioning

.

Check for clogging, dirt, and damage

.

Clean, free of clogging or

damage

Clean

.

Check for unusual noise

.

Measure insulation resistance

.

Free of unusual sound

.

Insulation resistance over 1M

Replace if insulation resistance goes below 1M

.

Make sure the lamp comes on

.

Comes on when the output is

.

Rapid drop in brightness

on

Replace if the light does not come on when the power is on

.

Perform an operation check using the operation data

.

Adequately controls the refrigerant temperature when the valve is switched (Check temperature

change when

cooling/heating is switched.)

Replace if malfunctioning

.

Check for clogging and tear

.

Clean the filter

.

Clean, free of damage Clean the filter

Replace if extremely dirty or damaged

.

Check the outer appearance

.

Make sure its free of foreign objects

.

Free of frayed or cut wires .

Free of foreign objects

Replace if damaged or extremely worn Remove foreign objects

.

Clean, free of clogging .

Free of wear and tear

Clean if dirty or clogged Replace if e Pour water into the drain trap

xtremely worm

.

Check for unusual noise

.

Check insulation resistance

.

Check for loosened terminals

.

Free of unusual sound .

Insulation resistance over 1M .

Free of loosened terminals

Replace if insulation resistance goes below 1M (under the condition that the refrigerant is not liquefied) Tighten loosened bolts

Adjust the belt Replace if the belt length exceeds 2% of the original length, worn, or used over 8000 hours

If the noise doesn't stop after lubrication, change the oil. Add lubricant once a year.

.

Check for clogging, dirt, and damage

.

Clean, free of clogging or

damage

Clean

Parts

Fan motor

Bearing

Fan belt

Air filter

Linear expansion valve

Display lamp

Compressor

Fan motor

Linear expansion valve

6

months

6

months

6

months

6

months

3

months

Check points

Inspection

Cycle

Unit

What to doAssessment

Drain pan

Drain hose

Inverter cooling fan

Float switch

Heat exchanger

Pressure switch

4-way valve

IndoorOutdoor

1

year

1

year

1

year

Heat exchanger

(LED)

DATA BOOK PU(H)Y-P250YGM-A

PUHY-P500YGM-A PFD-P250VM-E PFD-P500VM-E

Issued in July 2006 MEE05K442 Printed in Japan

New publication effective July 2006.

Specifications subject to change without notice.

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

Mitsubishi PU(H)Y-P250YGM-A, PUHY-P500YGM-A, PFD-P250VM-E, PFD-P500VM-E DATA BOOK

Specifications and Main Features

Frequently Asked Questions

User Manual