Download Mitsubishi Electric PDFY-P-VM-E Specifications

PUHY-P-YGM-A
PFD-P-VM-E
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CONTENTS
1. Specifications
1
1
2
3
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
4
4
4
5
6
6
3. Sound Levels ···································································
7
7
8
8
······························································
1-1 Main Features ······························································
1-2 List of Possible Combinations of Indoor and Outdoor Units ·····
1-3 Unit Specifications ·························································
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 ·······························
9
13
17
19
19
20
21
23
27
8. Air Conditioning the Computer Room ························· 30
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 ······················
30
30
31
32
33
35
9. Maintenance/Inspection ··············································· 36
9-1 Maintenance/Inspection Schedule
·······························
36
1. Specifications
1-1.Main Features
(1) List of Models
PUHY-P250YGM-A
PUHY-P500YGM-A
} Outdoor Unit
10HP(Down flow): PFD-P250VM-E } Indoor Unit
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.
<10HP System>
Outdoor Unit
Indoor Unit
PUHY-P250YGM-A
PFD-P250VM-E
G-50A
✻3
TB7 TB3 ✻2
✻1
12V DC
UP
POWER SUPPLY UNIT
MODEL
PAC-SC50KUA
POWER RATING
2.11kg
WEIGHT
SERIAL No.
MITSUBISHI ELECTRIC CORPORATION
M-NET
PAC-SC50KUA
When using a PFD-P250VM-E as an indoor unit, connect an outdoor unit PUHY-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.
<20HP System>
Single refrigerant circuit
Outdoor Unit
Indoor Unit
PUHY-P500YGM-A
PFD-P500VM-E
G-50A
TB7
TB3 ✻2
✻1
12V DC
UP
POWER SUPPLY UNIT
MODEL
PAC-SC50KUA
POWER RATING
WEIGHT
SERIAL No.
2.11kg
MITSUBISHI ELECTRIC CORPORATION
M-NET
PAC-SC50KUA
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.
1
Two refrigerant circuits
Outdoor Unit
Indoor Unit
PFD-P500VM-E
PUHY-P250YGM-A
G-50A
TB7
TB3 ✻2
✻1
12V DC
✻3
TB7
UP
POWER SUPPLY UNIT
MODEL
PAC-SC50KUA
POWER RATING
WEIGHT
SERIAL No.
2.11kg
MITSUBISHI ELECTRIC CORPORATION
PUHY-P250YGM-A
TB3
M-NET
PAC-SC50KUA
When using a PFD-P500VM-E as an indoor unit, connect 2 PUHY-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.
1-2. List of Possible Combinations of Indoor and Outdoor Units
Model Name
Indoor unit
Outdoor unit
10HP system
20HP system
PFD-P250VM-E
PUHY-P250YGM-A
PFD-P500VM-E
PUHY-P250YGM-A x 2
or PUHY-P500YGM-A
Cooling
Heating
Cooling
Heating
System capacity
kW
28.0
31.5
56.0
63.0
System Power input
kW
9.3
9.1
18.6
18.2
A
16.7/15.9/15.4
16.4/15.5/15.1
32.3/30.8/29.7
31.7/30.0/29.1
System current
✻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
2
1-3. Unit Specifications
(1) Outdoor Unit
Model name
Capacity
kW
✻1
Power source
kW
Power input
A
Current
Type ✕ Quantity
Fan
m3/min
Airflow rate
Motor output
kW
Compressor Type
kW
Motor output
Crankcase heater
kW
Heat exchanger
Refrigerant / Lubricant
External finish
External dimension H x W x D
mm
Protection High pressure protection
devices
Compressor
Fan
Inverter
Refrigerant
High press. pipe
piping diameter
Low press. pipe
✻ 2 dB(A)
Noise level
kg
Net weight
Note:
PUHY-P250YGM-A (-BS)
connected with PFD series
PUHY-P500YGM-A (-BS)
connected with PFD series
Cooling
28.0
Heating
Cooling
Heating
56.0
63.0
31.5
3N ~ 380/400/415V 50/60Hz
13.6
13.2
6.8
6.6
22.8/21.8/21.0
22.2/21.0/20.4
11.4/10.9/10.5
11.1/10.5/10.2
Propeller fan x 1
Propeller fan x 2
200
400
0.38
0.38 x 2
Hermetic
8.2+5.3
6.7
0.045 x 2
0.045 x 1
Salt resistant fin
R410A/MEL32
Pre-coated galvanized sheets (+ powder coating for -BS type) <MUNSEL 5Y 8/1 or similar>
1,840 x 990 x 840
1,840 x 1,990 x 840
4.15MPa
Over current protection / Over heat protection
Thermal switch
Over current protection / Thermal protection
ø9.52 Flare (ø12.7 for over 90m)
ø15.88 Flare
ø22.2 Brazed
ø28.58 Brazed
57/57
60/61
455
233
*1. Cooling/Heating capacity indicates the maximum value at operation under the following condition.
<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
*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.
(2) Indoor Unit
Model name
System capacity
kW
Power source
Power input
kW
Current
A
Type x Quantity
Airflow rate
m3/min
Fan
External static pressure
Pa
Motor Output
kW
Refrigerant
External finish
PFD-P250VM-E
PFD-P500VM-E
Heating
✻1
Cooling
31.5
56.0
3N~380/400/415V(50Hz), 400/415V(60Hz)
Cooling
28.0
2.5
5.3/5.0/4.9
Sirocco fan x 1
160
120
2.2
Heating
63.0
✻1
5.0
9.5/9.0/8.7
Sirocco fan x 2
320
120
4.4
R410A
Galvanized steel plate (with polyester coating)
<MUNSEL 2.9GY 8.6/0.3(White) 7.2GB 3.2/5.3(Blue) or similar>
1,950 x 1,980 x 780
1,950 x 1,380 x 780
External dimensions H x W x D mm
Thermal switch
Protection devices (Fan)
Liquid pipe ø 9.52 Brazed (ø 12.7 for over 90m) Liquid pipe
Single refrigerant
ø 15.88 Brazed
Refrigerant
circuit
Gas pipe
Gas pipe
ø 22.2 Brazed
ø 28.58 Brazed
piping diameter
Two refrigerant
Liquid pipe ø 9.52 Brazed (ø 12.7 for over 90m)
✻2
circuit
Gas pipe
ø 22.2 Brazed
Refrigerant piping allowable length
m
150
150
59
63
dB(A)
Noise level
Cross fin (Aluminum plate fin and copper tube)
Heat exchanger
Air filter
PP Honeycomb fabric (washable)
Net weight
kg
380
520
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.
3
2. Capacity Curves
2-1. Cooling Capacity
1.4
Indoor unit inlet temperature (˚CWB)
Capacity correction coefficient
1.3
1.2
1.1
24
1.0
0.9
19
15
0.8
12
0.7
-15
-10
-5
0
5
10
15
20
25
30
35
40
45
Outdoor unit inlet temperature (˚CDB)
2-2. Cooling Input
1.3
Indoor unit inlet temperature (˚CWB)
24
1.2
Input Correction Coefficient
19
15
1.1
12
1.0
0.9
0.8
0.7
-15
-10
-5
0
5
10
15
20
25
30
35
40
45
Outdoor unit inlet temperature (˚CDB)
✻ The correction curves indicate the values measured at the point where the compressor was
operated at its maximum capacity.
✻
indicates the standard value.
4
2-3. SHF Curves
Standard Capacity Ratio
130% 120%110%100% 90%
80%
70%
1
Indoor Temperature 27˚CDB
0.93
0.9
SHF
0.8
0.7
0.6
0.5
0.4
30
35
40
45
50
55
65
60
70
75
80
RH (%)
Standard Capacity Ratio
130% 120%110%100% 90%
80%
70%
1
Indoor Temperature 24˚CDB
0.9
SHF
0.8
0.7
0.6
0.5
0.4
30
35
40
45
50
55
60
RH (%)
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/-
5
65
70
75
80
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.
Capacity correction coefficient
1
0.9
0.8
0.7
0
20
40
60
80
100
120
140
160
180
Piping equivalent length (m)
• How to obtain piping equivalent length
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.50 ✕ number of bent on the piping)m
2-5. Operation limit
Indoor temperature (˚CWB)
• Cooling
30
25
20
15
12
10
-15
-10
-5
0
5
10
15
20
25
30
35
40
45
Outdoor temperature (˚CDB)
* The height between the Outdoor PUHY-P-YGM-A and Indoor could make the running
temperature range narrow. For details refer to P19, 7-1 Refrigerant Piping System.
• Heating
Indoor temperature (˚CDB)
30
25
20
15
10
5
-20
-15
-10
-5
0
5
10
15
20
Outdoor temperature (˚CWB)
6
25
30
35
40
45
50
3. Sound Levels
3-1. Noise Level
(1) Outdoor Unit
1m
Measured
point
1m
Series
Noise Level
(dB [Type A])
PUHY-P250YGM-A
57
PUHY-P500YGM-A
60/61
(50Hz/60Hz)
(2) Indoor Unit
1m
Measured
point
1m
Series
7
Noise Level
(dB [Type A])
PFD-P250VM-E
59
PFD-P500VM-E
63
3-2. NC Curves
(External static
pressure 0Pa)
PUHY-P250YGM-A
63Hz
125Hz
250Hz
62.5 58.5 55.5
53
49.5
49
49
PUHY-P500YGM-A
dB(A)
500Hz 1000Hz 2000Hz 4000Hz 8000Hz
43
57
(External static
pressure 0Pa)
63Hz
125Hz
250Hz
50Hz
67
61.5
60.5
58
53.5
50.5
48
43
60Hz
68
65
60.5
59
54
51.5
49
43.5
dB(A)
500Hz 1000Hz 2000Hz 4000Hz 8000Hz
60
61
50Hz
90
OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20µPa
OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20µPa
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
10
Approximate minimum
audible limit on
continuous noise
63
125
NC-20
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
Approximate minimum
audible limit on
continuous noise
10
250
500
1000
2000
4000
8000
63
125
OCTAVE BAND CENTER FREQUENCIES (Hz)
63Hz
125Hz
250Hz
500Hz
70.6
62.7
60.5
56.1
1000Hz 2000Hz 4000Hz 8000Hz
54.8
45.7
39.7
32.9
250
500
1000
2000
4000
8000
(External static
pressure 120Pa)
PFD-P500VM-E
dB(A)
63Hz
125Hz
250Hz
500Hz
59
82.8
70.5
65.6
57,0
1000Hz 2000Hz 4000Hz 8000Hz
55.1
51.1
44.7
dB(A)
37.9
63
90
OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20µPa
90
80
NC-70
70
60
NC-60
50
NC-50
40
NC-40
30
20
NC-20
OCTAVE BAND CENTER FREQUENCIES (Hz)
(External static
pressure 120Pa)
PFD-P250VM-E
OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20µPa
60Hz
NC-30
Approximate minimum
audible limit on
continuous noise
10
63Hz
125Hz
NC-20
250Hz
500Hz
1000Hz
2000Hz
4000Hz
80
NC-70
70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
Approximate minimum
audible limit on
continuous noise
10
63Hz
8000Hz
OCTAVE BAND CENTER FREQUENCIES (Hz)
125Hz
250Hz
NC-20
500Hz
1000Hz
2000Hz
4000Hz
8000Hz
OCTAVE BAND CENTER FREQUENCIES (Hz)
3-3. Fan Characteristics Curves
PFD-P250VM-E
PFD-P500VM-E
: 50/60Hz, standard
: 50/60Hz, standard
1000
1000
Output 3.7kW
Total static pressure (Pa)
800
900
Fan rotation speed
1200rpm
700
1100rpm
600
(Output 2.2kW)
500
1000rpm
400
900rpm
300
800rpm
130
Output 5.5kW
600
1100rpm
500
400
300
200
1000rpm
800rpm
Internal resistance
100
100
0
1200rpm
700
900rpm
Internal resistance
(middle-high efficient filter )
Internal
resistance
200
136
0
255
250
184
140
150
160
170
Internal resistance
(middle-high efficient filter )
Output 7.5kW
800
Total static pressure (Pa)
900
Fan rotation speed
1300rpm
180
190
3
Air volume (m /min)
8
Standard
With a middle-high efficient filter
272
318
345
270
290
310
330
350
Air volume (m3/min)
368
370
166
768
5
Cross section Y – Y
12
ø53
136
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.
553
117
Left side view
Air outlet
117
80
135
<Left piping hole> Refrig. service
valve(Gas)
<Flange>
100
Refrig. service
valve (Liquid)
<Flare>
X
Service panel
67
207
83
67 160
Front view
Knockout hole
<Front piping
hole>
Top view
990
900(mounting pitch)
207
67
840
X
45
PUHY-P250YGM-A
37 Knockout hole
40
45
Knockout hole
2X2-14X20 0val hole
(Mounting hole)
ø27 Knockout hole
<Left side hole for
control wiring>
Air
inlet
ø62 Knockout hole
<Hole for power supply>
Changeable to ø27,ø33 by using
attached conduit mounting plate <Accessory>
37
Air
inlet
20
70
80
57
<Accessories>
• 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.
80
Cross section X – X
Knockout hole
<Bottom piping hole>
65 160
10 90
Conn. pipe(Liquid)
ø9.52 <Flare>
Y
134 100
Conn. pipe(Gas)
ø22.2 <Brazed>
280
ø27 Knockout hole
<Bottom hole for
control wiring>
235
877
1840
Y
44
150
9
11 78
16
845(mounting pitch)
16
265
1575
494
4. External Dimensions
Unit : mm
80
5
162
768
Conn. pipe(Liquid)
ø15.88<Flare>
65 160
80
37
Air
inlet
Y
Y
115
Left side view
Air outlet
115
80
135
Knockout hole
37 <Left piping hole>
40
ø27 Knockout hole
<Left side hole for
control wiring>
Air
inlet
45
Refrig. service
valve(Gas)
<Flange>
100
Refrig. service
valve (Liquid)
<Flare>
X
Service panel
Knockout hole
ø62 Knockout hole
3X2-14X20 Oval hole
<Hole for power supply>
Changeable to ø46,ø53 by using
(Mounting hole)
attached conduit mounting plate <Accessory>
ø27 Knockout hole
<Bottom hole for
control wiring>
Cross section X – X
Y
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.
<Accessories>
• 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.
Cross section Y – Y
12
Conn. pipe(Gas)
ø28.58<Brazed>
57
145
Knockout hole
<Bottom piping hole>
89
ø53
20
70
553
134 100
Y
280
1000
235
68
205
83
67 160
Top view
1990
Front view
Knockout hole
<Front piping hole>
950(mounting pitch)
950(mounting pitch)
205
68
45
265
494
44
150
X
877
1840
16
845(mounting pitch)
16
1575
840
11 78
10
10
PUHY-P500YGM-A
Unit : mm
Filter
1380
Air outlet
Air inlet
Power supply:White
Operating
:Green
Check
:Yellow
Failure
:Red
Control box
Lifting bolts
(Accessory)
Remote controller
Changeover switch
<Nomal/Local>
Refrig. piping <liquid> ø9.52 braze
Hole for the control wiring <ø32 knook out hole>
140
Lamp
1950
A
Hole for the control wiring
<ø32 knook out hole> Hole for the power supply <ø32 knook out hole>
100
<2-ø32 knook out
hole>
Hole for the power
supply(Body)
50
100
50
780
68
260
401
100
100
Panel
<view from A>
1340
1180
Air outlet
462
140
Service space
Hole for gas pipe connecting(ø42)
Hole for liquid pipe connecting(ø24)
Indoor unit
Service space
Unit front
figure
400 or more
20
Hole for liquid pipe connecting(ø24)
Hole for gas pipe connecting(ø42)
<Accessory>
· Lifting bolts
······4pc.
· Front panel opening and closing key ······1pc.
Emergency drain piping connection <Rp1-1/4>
100
340
186
Bolt holes:8-ø18
Main drain piping connection <Rp1-1/4>
Hole for the power supply(ø60)
Hole for the control wiring(ø60)
Unit surface
figure
Pipe execution
space
500 or more
Indoor unit
Refrig. piping <gas> ø22.2 braze
Drain piping connection
for humidifier
<Rp1-1/4>
20
800 or more
321
518
220
87
200 or more
68
Air inlet
220
320
50
390
20
740
580
20
100
305
410
171 150
65
11
260
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.
PFD-P250VM-E
Unit : mm
Hole for the power
supply(Body)
<2-ø 32 knook out
hole>
50
Control box
100
Hole for the control wiring <ø 32 knook out hole>
Hole for the power supply <ø 32 knook out hole>
Air outlet
1980
A
Air inlet
Lifting bolts
(Accessory)
1950
Refrig. piping <liquid> in 2 refrig. circuit system ø 9.52 braze No.1
Hole for the control wiring
<ø 32 knook out hole>
100
Filter
Remote controller
Changeover switch
<Normal/Local>
140
Lamp
1940
1780
Air
outlet
359
370
<view from A>
241
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> in 2 refrig. circuit
system ø 9.52 braze No.2
Refrig. piping <gas> ø 28.58 braze
124
68 68
Air
outlet
359
838
Refrig. piping <gas> in 2 refrig. circuit system
type P450:ø 19.05 braze,
type P560:ø 22.2 braze No.2
220
321
Refrig. piping <liquid> ø 15.88 braze
50 68
780
Panel
20
100
Drain piping connection
for humidifier
<Rp1-1/4>
Hole for the power supply(ø 60)
Hole for the control wiring(ø 60)
Indoor unit
Service space
Unit front
figure
400 or more
440
120
Hole for liquid side pipe connecting
or No.1 gas side pipe connecting(ø 42)
in 2 refrig. circuit system
Hole for gas side pipe connecting or
No.2 liquid side pipe connecting(ø 48)
in 2 refrig. circuit system
Hole for No.2 gas side pipe connecting(ø 42)
in 2 refrig. circuit system
Hole for No.1 liquid side pipe connecting
(ø 24) in 2 refrig. circuit system
20
100
Hole for No.2 gas pipe
connecting(ø 42) in 2
refrig. circuit system
185 Hole for No.2 liquid pipe
connecting(ø 24) in 2
refrig. circuit system
Hole for liquid pipe connecting(ø 34)
Bolt holes:8-ø 18
Hole for No.1 liquid pipe connecting
(ø 24) in 2 refrig. circuit system
Hole for No.1 gas pipe connecting(ø 42)
in 2 refrig. circuit system
Main drain piping connecting<Rp1-1/4>
Hole for gas pipe connecting(ø 48)
✻1. It is necessary for the removal
of the panel beyond 600mm.
1000 or more ✻1
Emergency drain piping connection <Rp1-1/4>
20
740
20
Power supply :White
Operating
:Green
Check
:Yellow
Failure1
:Red
Failure2
:Red
379
Air inlet
81
<Accessory>
· Lifting bolts
······4pc.
· Front panel opening and closing key ······1pc.
50
305
410
171 150
65
100
580
100
220
320
680
710
135
135
68
124
12
390
Note1. Be sure to set up a trap for Emergency
drain piping.
200 or more
500 or more
(Trap height:beyond 100mm)
(Trap is not necessary for main drain piping.)
Pipe execution
2. Approve this figure because it is refused
space
Indoor unit
for the improvement and specification
subject to change without notice.
Panel opening
Unit surface
3. Amputate a gas pipe/liquid pipe in the
and closing
figure
fixed height at the time of 2 refrigerant
dimension
circuit connection, and connect it with
Service space
the local pipe.
PFD-P500VM-E
Unit : mm
N
PE
N
L3
blue
black
L3
L1
L2
shield
TB3
(Terminal Block)
M1 orange
M2 yellow
S
TB7
(Terminal Block)
M1 brown
M2 red
shield
21S
4b
SV
5b
TB1
(Terminal Block)
L1 red
L2 white
INDOOR/OUTDOOR
TRANSMISSION LINE
Power source
3N~
380/400/415V
50/60Hz
63H1
21S
4a
CENTRAL CONTROL
TRANSMISSION LINE
CH11
SV1
52
C1
CN21 1 2 3
blue
E
N
L3
black
blue
detection
circuit
X02
X03
X08
CNTYP4
21
R22
Maintenance
setting
LD2
CNTYP5
321
R23
CN20
F01
250VAC
6.3A T
~+
~
~–
black
ZNR4 C5
52C1
R1 R2
DCL
1234
12
123
red
CN40
CNS1
blue
CNS2
blue
7
1
3
red
1234
C4
ACCT
IPM
CNDC2
4
3
2
1
ACCT-U
U
red
V
W
1
black
9
1
2
4
1
L1
12
CNL1
700VDC
2A T
9
10
13
14
5 CN15V2
6
9
1
2
CNDR2
1
2
3 CNDC2
4 black
1
1
CNVCC1
8
ON
OFF
1234
1
6
ON
OFF
4
SW2
1
12 345
CNAC2
Function setting
SW1
THHS1
1
2
7
12
CNTH
green
3
2
1
CNFAN
red
CNFG
blue
CNRS1
X01
1
F01
250VAC
2A T
LED1 operation
LED2 error
Power circuit board 1
CNCT
CNIN
blue 8
1
THHS5
4
3 CNCT2
2 blue
1 F02
12
13
14
L2
CNL2
9
10
CN15V1 56
CNDR1
CNDC1 2
black 3
ACCT
-W
white
CNFG 1 2
blue
green
1
4
7
CNTH 2
green 1
CNINV
Filter board
8 CNOUT
1
4 CNVDC
1
2
3
1
LED1 operation
LED2 error
CNRS2
FAN control board
CNTR
7
1
Gate amp board 1
N
P
T01
(Transformer)
Compressor ON/OFF
Trouble
SNOW
*1
Compressor ON/OFF
NIGHT MODE
DCCT black
8
7
1
1
CNRS3B
+ R3
C2 + R4
C1
1234
CN41
1
2
3
4
5
CN51
CNAC3 1
black 2
CNRS3A
12V
CN3S 2
red
1
3
3
CN3D 2
1
CNVCC1
CNLVB
red
12 3456
LEV1
Power selection
connector
Address setting
Refer to the service handbook
about the switch operations.
2
1
0
SWU2 SWU1
SWU3
Function setting
*1
10 10 10
10 10
SW5 SW4 SW3 SW2 SW1
OFF ON OFF ON OFF ON OFF ON OFF ON
1
1
1
1
1
LD1
Control circuit board
X11
CNH
321
CNL
black
321
63HS
123
63LS
123
red
white
black
DS1
(Diode stack)
12345
X01
CN01
21
TH11
red
white
black
detection
circuit
X09
CN02
detection
circuit
87 65 43 21
21
CNTYP1
red
F02
250VAC
6.3A T
1 CN32
2
3
1 CN33
2
3
4
5
6
9
5
1 CN36
1 CN35
2 red
3
1 CN38
2 green
3
1
2 X52
3
CN52C
yellow
ACNF1
(Noise Filter)
red
L1
white
L2
A2
white
blue
A1
TH8 TH7 TH6 TH5
white
Inverter controller box
Z20
red
13
black
red
MF1
CN04
3
2
1
3
2
1
W
V
U
Earth terminal
CN3D
1-2P
OPEN
SHORT
Motor
(Compressor)
NOTE:The broken lines indicate field wiring.
CN3D Compressor
ON/OFF
1-3P
OPEN
ON
SHORT OFF
NIGHT
MODE
OFF
ON
Name
AC Current Sensor
DC Current Sensor
DC reactor
(Power factor improvement)
Magnetic contactor
(Inverter main circuit)
Fan motor (Radiator panel)
Crank case heater(Compressor)
4-way valve
Solenoid valve
(Discharge-suction bypass)
Solenoid valve
(Heat exchanger capacity control)
Electronic expansion valve
(SC coil)
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)
Radiator panel temp. detect(Fan)
High pressure switch
High pressure sensor
Low pressure sensor
Choke coil(Transmission)
Function device
*1: Function according to switch operation.
(SW4-7,CN3D 1-2P,and CN3D 1-3P)
SW4-7:OFF (Compressor ON/OFF
and NIGHT MODE)
Fan motor
(Heat exchanger)
U
V MC1
W
MF
THHS5
63H1
63HS
63LS
L1,L2
Z20
THHS1
TH8
TH11
TH5
TH6
TH7
LEV1
SV5b
MF1
CH11
21S4a,b
SV1
52C1
Symbol
ACCT
DCCT
DCL
<Symbol explanation>
5. Electrical Wiring Diagrams
PUHY-P250YGM-A (Connected with PFD series)
U
MC2 V
W
PE
red
white
black
L1
L2
L3
N
Motor
(Compressor)
Power source
3N~
380/400/415V
50/60Hz
INDOOR/OUTDOOR
TRANSMISSION LINE
CENTRAL CONTROL
TRANSMISSION LINE
S
TB3
(Terminal Block)
M1 orange
M2 yellow
TB7
(Terminal Block)
M1 brown
M2 red
21S
4b
SV3
SV
5b
L1
L2
L3
52C2
51C2
F12
AC660V
50A F
TB1
(Terminal Block)
L1 red
L2 white
L3 black
N blue
shield
shield
CH11
21S
4a
21S
4c
SV
5c
SV1
63H2
63H1
2
4
6
F11
AC660V
50A F
E
ACNF
(Noise Filter)
L1 red
L2 white
black
L3
blue
N
CN32
CN33
CN34
red
CN36
detection
circuit
X01
X02
X03
X05
X06
X07
X08
X09
CN02
21
63HS
CNL
black
321
CNH
321
~
~
~–
black
DS
(Diode stack)
red
+
123
ZNR4 C5
12
CNS2 CNS1
blue blue
CNTYP5
321
R23
DCL
1234
52C1
R1 R2
CN40
power selection
connector
12V
1
+
C1
R3
C2 + R4
black
red
C4
P
1
4
ACCT
IPM
CNDC2
U
red
L2
black
ACCT-W
9
10
13
14
9
10
13
14
6
1
8
X3
X1
1
ON
OFF
1234
SW1
6
ON
OFF
4
SW2
1
12 345
CNAC2
THHS1
F01
250VAC
2A T
Function setting
1
LED1 operation
LED2 error
7
green
1 2 CNTH
CNFAN
red
3
2
1
CNFG
blue
red
MF3
1
2
3
4
CN04
1
2
3
CN05
yellow
A2
U white
V black
W
52F
52F
A1
1
2
95 96
51C2 black
52 purple
A2 C2 A1
52C2
13 14
orange
L1
L2
L3
gray
red
brown
white
X01
CNRS1
red
white
black
3
CNCH 1
blue 2
3
CN52F 1
yellow 2
1
CN52C2 2
blue 3
4
5
1
CN51C2 23
Power circuit board
CNVCC1
CNCT
5 CN15V2
6
1 black
4 CNDC2
F02
700VDC
1 2A T
4
3 CNCT2
2 blue
1
L1
12
CN15V1 5
1
12
9 CNDR2
1
2
CNDR1
W 1
CNDC1
black 4
white
CNFG 1 2
blue
CNIN
blue 8
CNL2 CNL1
1
CNTH 2
green 1
7
4
1
THHS5
CNRT2 5 4 3 2 1
CNINV
1
2
3
4
CNOUT2
X2
Relay board
9
1
2
V
Filter
board
CNOUT
8 green
1
1 2 3 4 CNVDC
ACCT-U
1
2
3
Gate amp board
N
CNRS2
FAN control board
LED1 operation
LED2 error
CNTR
7
1
Compressor ON/OFF
Trouble
SNOW
*1
Compressor ON/OFF
NIGHT MODE
T01
(Transfomer)
DCCT
8
1
7
1234
CNVCC1
CNRS3B
1
3
7
CNAC3 1
black 2
CNRS3A
CNRT1
red
1
2
3
4
5
6
5
4
3
2
1
1
2
3
4
5
CN51
CN3S 3
red 21
1
3
CN3D 2
CNOUT1
yellow
CNLVB
red
123456
LEV1
1 2 3 4 CN41
Maintenance
setting
LD2
Address setting
Refer to the service handbook
about the switch operations.
2
1
0
SWU2 SWU1
SWU3
*1
Function setting
10 10 10
10 10
SW5 SW4 SW3 SW2 SW1
OFF ON OFF ON OFF ON OFF ON OFF ON
1
1
1
1
1
LD1
21
R22
CNTYP4
123
123
red
white
black
63LS
red
white
black
Control circuit board
detection
circuit
CN13 CN01
8 7 6 5 4 3 2 1 4321
TH12 TH11
detection
F02
circuit
250VAC
F01
6.3A T
250VAC
CN21 1 2 3
CN20 1 2 3 4 5 6.3A T
blue
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
1 CN35
2 red
3
3
CN52C
yellow
1 CN38
2 green
1
2 X52
3
white
blue
52 A2
C1
white
A1
21
CNTYP1
red
TH8 TH7 TH6 TH5
red
1
2
3
1
2
3
black
white
red
Z20
black
14
red
Inverter controller box
1
2
3
1
2
3
MF2
MF1
Motor
(Compressor)
U
V MC1
W
Fan motor
(Heat exchanger)
U
V
W
Fan motor
(Heat exchanger)
U
V
W
CH12
NIGHT
MODE
OFF
ON
NOTE:The broken lines indicate field wiring.
SW4-7:OFF (Compressor ON/OFF
and NIGHT MODE)
CN3D Compressor
CN3D
ON/OFF
1-3P
1-2P
OPEN ON
OPEN
SHORT OFF
SHORT
*1: Function according to switch operation.
(SW4-7,CN3D 1-2P,and CN3D 1-3P)
Earth terminal
Name
AC Current Sensor
DC Current Sensor
DC reactor
(Power factor improvement)
52C1
Magnetic contactor
(Inverter main circuit)
52C2
Magnetic contactor(No.2Compressor)
51C2
Overload relay(No.2Compressor)
52F
Magnetic contactor(Fan motor)
MF3
Fan motor (Radiator panel)
CH11,12 Crank case heater(Compressor)
21S4a,b,c 4-way valve
SV1,3
Solenoid valve
(Discharge-suction bypass)
SV5b,c
Solenoid valve
(Heat exchanger capacity control)
LEV1
Electronic expansion valve
(SC coil)
TH11,12
Thermistor Discharge pipe temp. detect
TH2
Gas pipe temp.detect
(Hex outlet)
TH5
Pipe temp.detect(Hex outlet)
TH6
OA temp.detect
TH7
liquid outlet temp.detect
at Sub-cool coil
TH8
bypass outlet temp.detect
at Sub-cool coil
THHS1
Radiator panel temp. detect
(Compressor)
Radiator panel temp. detect(Fan)
THHS5
63H1,2
High pressure switch
63HS
High pressure sensor
63LS
Low pressure sensor
L1,L2
Choke coil(Transmission)
Z20
Function device
Symbol
ACCT
DCCT
DCL
<Symbol explanation>
PUHY-P500YGM-A (Connected with PFD series)
LEV
TH23
TH22
TH21
TH24
6
5
4
3
2
1
345
15
SW1
Z3
21
21
21 21
CN60
33P1
T
21 321 6543213
CN28 CN22 CN20 CN21 CN29 CN31
7654321
CN7V
CNT
1 31
CN3T
ZNR901
F901
CN52
12345
Dehumidify
X07
31
31
CN2M
CN90
Z1
157 9
1
2
3
2
1
1
2
3
MF
I.B.
CN3A
X06 X05 X04
CN32
CND CNP CN33
ZNR1
DSA1 X01
CN51
123456
51F
Z1
Z3
52F
FAN
over current
detection
52F
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.
5. Use a contactor for low voltage. (with voltage of DC12V maximum current is 1mA)
SW3
Address
(odd)
CN25
CN24
9 0 1
12
12
SW14 SW12 SW11
(2nd digit) (1st digit)
678 9A
B CD
9 0 1
7 8
X11
2 3
SWC SW5 SW8
SW4 SW7 SW2
0
EF 1 2
4 5 6
2 3
4 5 6
7 8
ZNR2
51F
DSA1
S.B.
ZNR1
L1
AC
1
2
3
4
5
IFB
X11
B2
C
1
CN54
2
TB22 3
4
5
1
TB23 A1
2
A2
3 CN53
BC
4
TB21 B1
5
F1
3 3
L2
L3
N
1
2
3
2
1
6
5
2
1
3
4
5
6
TB2
SHIELD
S
B1
A1
TB5
CN1
1 1
2
1
TB15
2
1
Inside section of control box
L
L3
L
L4
L2
L1
PE
CN52
Indoor unit
contorol board
SW:Defumidify order
Z:Relay <Note5>
1(brown)
5(green)
External input adapter
(PAC-SA88HA)
The signal input of the dehumidify order is to
connect wiring referring to the bottom figure.
LED display(check)
Power supply DC30V, AC100/200V
Status output
Failure output
Distant location on/off
<no voltage or current>
Power supply DC12~24V
Distant location on/off
<with voltage and current>
SW9
Switch(normal/local)
PE
Power supply
3N~
380/400/415V(50Hz)
400/415V(60Hz)
LED display(power supply)
LED display(status)
LED display(failure)
Indoor unit
Control wiring
DC24~30V
RC
Z
Relay circuit
Z
SW
Power
Distant control panel
(field supply
and construction)
NAME
Fan motor
Indoor controller board
Surge absorber board
External input/output board
Power source terminal bed
Transmission terminal bed
Transmission terminal bed
Terminal bed for distant location on/off
<No voltage or current>
Terminal bed for distant location display
TB22
Terminal bed for distant location on/off
TB23
<With voltage and current>
Fuse<6-3/6A>
F901
Fuse<5A>
F1
ZNR1, ZNR2, ZNR901 Varistor
DSA1
Surge absorber
Transformer
T
Electronic linear expan.valve
LEV
Contactor(fan I/D)
52F
Over current relay (fan I/D)
51F
Float switch
33P1
TH21
Thermistor (inlet temp.detection)
TH22
Thermistor (piping temp.detection/liquid)
TH23
Thermistor (piping temp.detection/gas)
TH24
Thermistor (outlet temp.detection)
Switch (for mode selection)
SW1(I.B.)
Switch (for capacity code)
SW2(I.B.)
Switch (for mode selection)
SW3(I.B.)
Switch (for model selection)
SW4(I.B.)
Switch (normal/local)
SW9
Switch (1st digit address set)
SW11(I.B.)
Switch (2nd digit address set)
SW12(I.B.)
Switch (connection No.set)
SW14(I.B.)
Switch (outlet/inlet temp.control)
SWC(I.B.)
X11
Auxiliary relay(check)
Z1
Auxiliary relay(fan)
Z3
Auxiliary relay(fan failure detection)
L1
LED display (failure)
L2
LED display (status)
LED display (check)
L3
L4
LED display (power supply)
RC
MA Remote controller
SYMBOL
MF
I.B.
S.B.
IFB
TB2
TB5
TB15
TB21
PFD-P250VM-E
SW4 SW7 SW2
SWC SW5 SW8
EF 0 1 2
B CD
90 1
Address
(odd)
CN7V
No.1
7654321
ZNR1 X01
DSA1
CN51
CN52
F901
12345
12 3 4 5
Dehumidify
CN3A
X07 X06 X05 X04 CN2M
I.B.1
90 1
90 1
12
CN7V
No.2
7654321
LEV1A
33P1
LEV1
LEV1B
AD.B.
ZNR1 X01
DSA1
CN51
CN52
F901
12345
12345
Dehumidify
654321 654321
654321
X07 X06 X05 X04
I.B.2
Z1
CN32
CN2M
Z3
33P2
<note2>
T
Z2
51F
1
2
3
2
1
1
2
3
<note2>
CN3A
SW14 SW12 SW11
ZNR901
(2nd digit) (1st digit)
SW3
SW1 CN28 CN22 CN20 CN21 CN29 CN31 CN60 CN3T
CNT CND CNP CN33
CN90
21
2 1 2 1 21 21 3 21 6 5 4 3 2 1 3
1 3 1 13 5 3 1 3 1
1 57 9
Address
(odd)
CN24 CN25
12
X12
Z3
T
1
2
3
1
2
3
2
1
1
3
2
1
Note:
MF
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.
7. Use a contactor for low voltage. (with voltage of DC12V maximum current is 1mA)
TH23-2
TH22-2
6
5
4
3
2
1
6
5
4
3
2
1
12
CN24 CN25
2 3
TH21-2
TH24-2
LEV2
LEV1
TH23-1
TH22-1
7 8
TH21-1
90 1
X11
7 8
ZNR901
CN32
SW14 SW12 SW11
(2nd digit) (1st digit)
SW3
SW1 CN28 CN22 CN20 CN21 CN29 CN31 CN60 CN3T
CNT CND CNP CN33
CN90
21
2 1 2 1 21 21 3 21 6 5 4 3 2 1 3
1 57 9
1 31 13 5 31 31
345
6789A
16
45 6
2 3
45 6
TH24-1
B CD
6789A
345
SWC SW5 SW8
SW4 SW7 SW2
EF 0 1 2
45 6
7 8
12
2 3
45 6
2 3
7 8
52F
Z3
ZNR2
51F
6
5
4
3
2
1
2 refrigerant
circuit
1 refrigerant
circuit
(at the time of shipping)
PFD-P500VM-E
TB2
3
4
5
6
CN2M
CN3A
2
L
L
1
2
3
2
1
L4
L2
L
L
L5
L3
L1
1 2 3 4 5 6 7 8 9 10
12345
12345
ON
SW4
ON
<note2>
Connect a connector to
CN3A, CN2M of I.B.2
board.
1 2 3 4 5 6 7 8 9 10
ON
123 4 56
L2
L3
N
I.B. 2
123 4 56
ON
SW3
654321
CN60
CN53
L1
1
2
3
AC
TB23 A1
A2
BC
TB21 B1
B2
C
1
CN54
2
TB22 3
4
5
SHIELD
IFB
S
B2
A2
TB5-2
4
3
X12
1
X11
1
2
3
4
5
F1
3 3
ON
SW2
DSA1
S.B.
CN1
1 1
ON
How to set up to SW2, 3, 4.
(In case of 2 refrigerant circuit)
LEV2
Remove the LEV1B connector
from AD.B. board, and
connect it to CN60 of
I.B.2 board.
How to connect in case of 2 refrigerant circuit.
FAN
over current
detection
52F
Z1 Z2
ZNR1
2
1
6
5
2
1
SHIELD
S
B1
A1
TB5-1
TB15
2
1
Inside section of control box
PE
<note2>
LED display(check)
F901
F1
ZNR1, ZNR2, ZNR901
DSA1
T
LEV1, 2
52F
51F
33P1, 33P2
TH21-1, TH21-2
TH22-1, TH22-2
TH23-1, TH23-2
TH24-1, TH24-2
SW1(I.B.)
SW2(I.B.)
SW3(I.B.)
SW4(I.B.)
SW9
SW11(I.B.)
SW12(I.B.)
SW14(I.B.)
SWC(I.B.)
X11, X12
Z1, Z2
Z3
L1
L2
L3
L4
L5
RC
TB22
TB23
CN52
Indoor unit
contorol board
SW:Defumidify order
Z:Relay <Note7>
1(brown)
5(green)
External input adapter
(PAC-SA88HA)
The signal input of the dehumidify order is to
connect wiring referring to the bottom figure.
LED display(No.2 failure)
No.2 Indoor unit
Control wiring
DC24~30V
Power supply DC12~24V
Distant location on/off
<with voltage and current>
Distant location on/off
<no voltage or current>
Power supply DC30V, AC100/200V
No1.Status output
No1.Failure output
No2.Status output
No2.Failure output
SW9
Switch(normal/local)
PE
Power supply
3N~
380/400/415V(50Hz)
400/415V(60Hz)
LED display(power supply)
LED display(status)
LED display(No.1 failure)
No.1 Indoor unit
Control wiring
DC24~30V
RC
SYMBOL
MF
I.B.1, I.B.2
AD.B.
S.B.
IFB
TB2
TB5-1, -2
TB15
TB21
Z
Relay circuit
Z
SW
Power
Distant control panel
(field supply
and construction)
NAME
Fan motor
Indoor controller board
Adapter board
Surge absorber board
External input/output board
Power source terminal bed
Transmission terminal bed
Transmission terminal bed
Terminal bed for distant location on/off
<No voltage or current>
Terminal bed for distant location display
Terminal bed for distant location on/off
<With voltage and current>
Fuse <6.3/6A>
Fuse <5A>
Varistor
Surge absorber
Transformer
Electronic linear expan.valve
Contactor(fan I/D)
Over current relay (fan I/D)
Float switch
Thermistor (inlet temp.detection)
Thermistor (piping temp.detection/liquid)
Thermistor (piping temp.detection/gas)
Thermistor (outlet temp.detection)
Switch (for mode selection)
Switch (for capacity code)
Switch (for mode selection)
Switch (for model selection)
Switch (normal/local)
Switch (1st digit address set)
Switch (2nd digit address set)
Switch (connection No.set)
Switch (outlet/inlet temp.control)
Auxiliary relay(check)
Auxiliary relay(fan)
Auxiliary relay(fan failure detection)
LED display (No.1 failure)
LED display (No.2 failure)
LED display (status)
LED display (check)
LED display (power supply)
MA Remote controller
PFD-P500VM-E
TH6
HEX F
SV5b
TH5
HEX B
TH8
SCC
21S4b
TH11
CJ1
63H
17
LEV1
CP2
ST3
63HS
COMP
O/S
21S4a
ST8
ST4
CP1
SV1
Drier
TH7
ST7
ST6
ACC
ST2
63LS
CJ2
ST1
BV2
BV1
6. Refrigerant Circuit Diagram And Thermal Sensor
PUHY-P250YGM-A
TH6
SV5b
HEX1b
(F)
HEX1a
(F)
HEX2b
(B)
21S4b
SV5c
21S4c
18
TH5
HEX2a
(B)
21S4a
TH8
63H1
O/S
SCC
COMP
1
TH11
CV1
CP1
CP3 ST9
LEV1 ST8
Oil
Tank
CP2
ST6 SV1
ST5
63HS
CJ1
CJ3
TH7
63H2
O/S
Drier
ST7
CV2
SV3
COMP
2
TH12
ST13 ST12 ST11 ST10
ACC
63LS
CJ2
ST2
ST1
BV2
BV1
PUHY-P500YGM-A
7. System Design
7-1.Refrigerant Piping System
■ Sample connection
<Refrigerant system with one outdoor unit>
Outdoor unit
<Refrigerant system with two outdoor units>
Outdoor unit
A
A
L
L
H
H
L
Indoor unit
Allowable piping
length
Allowable height
difference
■ Pipe selection
Indoor unit
Farthest piping length(L)
150 m or less in actual length
Height difference between indoor 50 m or less (40 m if outdoor unit is below indoor unit,
and outdoor units (H)
15 m if outside temperature is 10˚C or below)
Outdoor unit model Liquid pipe size
P250
ø 9.52 ✻1
P500
ø 15.88
Gas pipe size
ø 22.2
ø 28.58
✻1 Use ø 12.7 pipes when the pipe
length exceeds 90 m.
■ 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.)
<Amount of refrigerant to be added>
✻ Refrigerant charge
calculation
Liquid pipe size
Liquid pipe size
Total length of the
ø 15.88 pipes x 0.2
Total length of the
ø 9.52 pipes x 0.06
+
(m) x 0.2(kg/m)
✻ Amount of charged
refrigerant at factory shipment
Outdoor unit Charged
refrigerant
model
amount(kg)
P250
9.5
P500
22.0
+
Total capacity of
connected indoor units
Amount for the indoor unit
P250 model
2.0kg
P500 model
4.0kg
✻ 2 kg x 2 when connected to a
system with two outdoor units
(m) x 0.06(kg/m)
✻Sample calculation
<Connection to a system with one outdoor unit>
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
<Connection to a system with two outdoor unit>
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)
Caution
Charge Liquid Refrigerant
Filling the equipment with gas refrigerant will result in a power loss due to transformation of refrigerant in the tank.
19
7-2.Control Wiring
Restrictions when the PFD-type indoor units are connected (related to the system)
1. It is necessary to rewrite the S/W on the controller circuit board of the outdoor unit connected to
the PFD-type indoor units.
2. The outdoor units whose S/W is changed to the dedicated S/W described above 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. The automatic address setup cannot be made.
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
PFD-type 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 main remote 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 main remote controller.
1 When the Normal/Local switching switch is set to "Local"
2 When the DipSW1-10 on the controller circuit board is set to "ON"
(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)
System component
For multiple-refrigerant system
Length of transmission line
n/a
Facility type
(noise level measurement)
All types of facilities
Cable type
Shield cable
CVVS · CPEVS · MVVS
No. of cable
2-core cable
Diameter
Over 1.25mm2
Wiring specifications
Total length of indoor/outdoor transmission line
Maximum length: 200m
Maximum length of centralized control transmission line and Indoor/Outdoor
transmission line via indoor/outdoor units: 500m maximum
20
2 Remote control wiring
MA remote controller ✻ 1
Cable type
VCTF · VCTFK · CVV · CVS · VVR · VVF · VCT
No. of cable
2-core cable
Diameter
0.3~1.25mm2
(0.75~1.25mm2)
Wiring specifications
Total Length
✻2
✻3
Maximum length: 200 m
✻ 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.
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.
Unit
Symbol
Outdoor unit
Indoor unit
Main/sub controllers
✻
Turn off the power to
OC
Outdoor unit
IC
Indoor and outdoor units
✻ 10HP has only the main controller
(1) Address setting
The need for address settings and the range of address setting depend on the configuration of the system. Refer to “Sample System Connection”.
Unit or controller
Indoor unit Main · Sub
Symbol
IC
MA remote controller
MA
Outdoor unit
OC
Address
setting range
01~50
(Note 1)
Address setting method
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.)
No address setting required.
51~100
(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.)
Add 50 to the address assigned to the indoor unit connected
the system with one outdoor unit.
Factory setting
Model
00
Main
00
(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.
21
(2) Power supply switch connector connection on the outdoor unit
(Factory setting: The male power supply switch connector is connected to CN41.)
Grouping system
Connection to
the system
controller
Power supply unit
for transmission
lines
Grouping the indoor
units connected to
different outdoor
units
Leave the male connector on CN41 as it is.
(Factory setting)
Grouped indoor
units connected to
one outdoor unit
Grouped indoor
units connected to
different outdoor
units
Power supply switch connector connection
Not grouped
Not connected
Grouped
With connection
to indoor-outdoor
transmission line
Not required
Grouped
/Not grouped
With connection
to transmission
line for centralized
control
Not required
(Powered from
the outdoor unit)
Grouped
/Not grouped
Required
Grouped
/Not grouped
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.
Leave the male connector on CN41 as it is.
(Factory setting)
(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.)
(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.
Remove the cover on the remote controller
Screwdriver
Insert a flat-head screwdriver in the
groove shown in the picture, and
move the screwdriver in the direction
shown in the arrow.
ON
Set Dip Switch No.1 on the remote
controller to “OFF” (Main to Sub)
1
2
3
4
Dip switches
Remote controller body
(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.
22
7-4.Sample System Connection
(1) An example of a system to which an MA remote controller is connected
1 System connected to one outdoor unit
Control Wiring Diagram
L1
Leave the male connector
on CN41 as it is.
IC
OC
51
✻ 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).
01
TB3
TB7
M1 M2 S M1 M2
TB5-1
A1 B1 S
TB15
1 2
A B
MA
NO
02
TB5-2
A2 B2 S
Maximum Allowable Length
Notes
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>
Maximum Length (1.25mm2 or more)
L1 200m
Wiring and Address Setting
<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) 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).
Steps
<b. Switch setting>
Address setting is required as follows.
1
Unit or controller
Indoor
unit
Address
setting range
Address setting method
Notes
Zone number (SW14) setting is
required. (Setting range: between
1 and 5)
Main
IC
01~50
Assign a sequential odd number starting with
"01" to the upper indoor controller.
Sub
IC
01~50
Assign sequential numbers starting with the
address of the main unit in the same group.
(Main unit address +1)
51~100
Add 50 to the address assigned to the indoor unit
connected to the system with one outdoor unit.
2
Outdoor unit
OC
MA
Main Controller
remote
controller Sub Controller
MA Setting not required.
3
Factory
setting
00
00
Main
MA Sub Controller Settings to be made with the sub/main switch
23
(1) An example of a system to which an MA remote controller is connected
2 System connected to two outdoor units
Control Wiring Diagram
L1
Disconnect the male power supply
connector from CN40 and connect
it to CN41.
IC
OC
51
TB3
TB7
M1M2 S M1 M2
TB5-1
A1 B1 S
TB15
1 2
Connection
L31
✻ 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).
01
A B
MA
Leave the male connector
on CN41 as it is.
NO
OC
52
02
TB5-2
A2B2 S
TB3
TB7
M1 M2 S M1 M2
NO
L2
Maximum Allowable Length
Notes
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>
Maximum Length (1.25mm2 or more)
L1, L2 200m
<b. Transmission line for centralized control>
Maximum Length via outdoor unit (1.25mm2 or more)
L1 + L31 + L2 500m
Wiring and Address Setting
Steps
<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) 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).
<b. Transmission line for centralized control> Only with connection to a manipulator 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.
Address
Factory
Unit or controller
Address setting method
Notes
setting
setting range
1
Indoor
unit
Main
IC
01~50
Assign a sequential odd number starting with
"01" to the upper indoor controller.
Sub
IC
01~50
Assign sequential numbers starting with the
address of the main unit in the same group.
(Main unit address +1)
51~100
Add 50 to the address assigned to the indoor unit
connected to the system with one outdoor unit.
2
Outdoor unit
OC
MA
Main Controller
remote
controller Sub Controller
MA Setting not required.
3
Zone number (SW14) setting is
required. (Setting range: between
1 and 5)
00
00
Main
MA Sub Controller Settings to be made with the sub/main switch
24
(1) An example of a system to which an MA remote controller is connected
3 System in which two MA remote controllers are connected to one indoor unit
Control Wiring Diagram
L1
Leave the male connector
on CN41 as it is.
IC
OC
51
✻ 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).
01
TB3
TB7
M1 M2 S M1 M2
TB5-1
A1 B1 S
TB15
1 2
m2
m1
A B
A B
MA(Main) MA(Sub)
NO
NO
A1 B2
MA
02
TB5-2
A2 B2 S
Maximum Allowable Length
Notes
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>
Maximum overall length (0.3-1.25mm2 or more)
m1 + m2 200m
Wiring and Address Setting
<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.)
Steps
<c. Switch setting>
Address setting is required as follows.
1
Unit or controller
Indoor
unit
Address
setting range
Address setting method
Notes
Zone number (SW14) setting is
required. (Setting range: between
1 and 5)
Main
IC
01~50
Assign a sequential odd number starting with
"01" to the upper indoor controller.
Sub
IC
01~50
Assign sequential numbers starting with the
address of the main unit in the same group.
(Main unit address +1)
51~100
Add 50 to the address assigned to the indoor unit
connected to the system with one outdoor unit.
2
Outdoor unit
OC
MA
Main Controller
remote
controller Sub Controller
MA Setting not required.
3
Factory
setting
00
00
Main
MA Sub Controller Settings to be made with the sub/main switch
25
(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
Control Wiring Diagram
L1
L1
Leave the male connector
on CN41 as it is.
OC
Leave the male connector
on CN41 as it is.
OC
IC
51
53
01
TB3
TB7
M1M2 S M1M2
IC
TB3
TB7
M1 M2 S M1M2
TB5-1
A1 B1 S
✻ 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).
03
TB5-1
A1 B1 S
TB15
1 2
TB15
1 2
m1
m2
A B
MA(Main)
A B
MA(Sub)
02
04
TB5-2
A2 B2 S
TB5-2
A2 B2 S
m3
Maximum Allowable Length
Notes
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>
Maximum overall length (0.3-1.25mm2 or more)
m1 + m2 + m3 200m
Wiring and Address Setting
<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.
Steps
<c. Switch setting>
Address setting is required as follows.
1
Unit or controller
Indoor
unit
Address
setting range
Address setting method
Notes
Zone number (SW14) setting is
required. (Setting range: between
1 and 5)
Main
IC
01~50
Assign a sequential odd number starting with
"01" to the upper indoor controller.
Sub
IC
01~50
Assign sequential numbers starting with the
address of the main unit in the same group.
(Main unit address +1)
51~100
Add 50 to the address assigned to the indoor unit
connected to the system with one outdoor unit.
2
Outdoor unit
OC
MA
Main Controller
remote
controller Sub Controller
MA Setting not required.
3
Factory
setting
00
00
Main
MA Sub Controller Settings to be made with the sub/main switch
26
7-5.External input/output specifications
(1) Input/output specifications
Input
Function
Usage
Signals
Start/stop
Turning
ON/OFF
the indoor
unit
· Pulse [Factory setting: Dip SW1-9 ON]
(a-contact with voltage/without
voltage) ✻1
<With voltage>
Power Source: DC12~24V
Electrical Current:
Approximately 10mA (DC12V)
<Standard Pulse>
over 200ms
over 200ms
(Pulse powering time) (Pulse interval)
· Level [Dip SW1-9 OFF]
Dehumidi- Sending a
command
fication
to perform
signal
dehumidification with
priority
Level
Refer to the wiring diagram
<Dehumidification command> shown
on the next page.
✻1 Use minute-current contact (DC12V 1mA)
Output
Function
Usage
Signal
No. 2
Operation
Status
✻
Obtaining signals indicating
Relay a-contact
operation status of indoor units
output
in each refrigerant circuit.
DC 30V or
AC 100V/200V
Obtaining signals indicating
error status of indoor units in
Standard Current :
each refrigerant circuit.
1A
Obtaining signals indicating
Minimum Current :
operation status of indoor units 1mA
in each refrigerant circuit.
No. 2
Error Status
✻
Obtaining signals indicating
error status of indoor units in
each refrigerant circuit.
No.1
Operation
Status
No. 1
Error Status
✻ 20HP only
27
(2) Wiring
External input/output board
Input with voltage
TB23
AC
External power source
SW12
Stop/Start
A1
Short Circuit
A2
Input without voltage
CN53
1
TB21
BC
Common
SW11
Stop/Start
Short Circuit
Relay Contact Point Output
B1
2
B2
3
COM
Power Source for Display
No.1 Operation Status
L1
No.1 Error Status
L2
✻ No.2 Operation Status
L3
✻ No.2 Error Status
XC
3
XC
XD
4
L4
CN54
1
XB
2
5
XB
XA
1
4
XA
TB22
XD
XE
5
XE
2
3
4
5
✻ 20HP only
Connection to terminal board
Connection with connectors
Maximum : 100 m
<Input with Applied Voltage>
<Input without voltage applied>
External powe
source
DC12~24V
Electrical current input (per contact)
Approximately 10mA (DC12V)
SW11
Remote start/stop
✻ Each pressing pf the SW (Pulse input) switches
between ON and OFF.
Remote start/stop switch
Each pressing of the SW (Pulse input) switches
between ON and OFF.
Minute-current contact: DC12V 1mA
SW12
<Relay contact output>
Power supply
for displays
DC30V or less 1A
AC220-240V 1A
L1
No.1 Operation Status Indicator Lamp
L2
No.1 Error Status Indicator Lamp
L3
No.2 Operation Status Indicator Lamp
L4
No.2 Error Status Indicator Lamp
XA~XE
Relay
(Permissible Electrical Current: 10mA~1A)
● 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.”)
<Dehumidification command>
Indoor unit
controller circuit board
Adapter for
remote display
(PAC-SA88HA)
Relay circuit
Remote controller board
CN52
Relay power supply
5 Green
1 Brown
SW
Z
Z
SW : Dehumidification command
Z : Relay
(Contact: Minimum applicable load DC12V 1mA or less)
28
(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.
Wiring On Site
TB23
✻1
AC A1 A2
✻1
CN53
TB21
BC B1 B2
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
Wiring inside the unit
CN54
TB22
COM 1
To CN51 of No.2 board
2
3
4
5
Fix the wire on the highvoltage (AC220-240V)
clamp. Pull the wire
through the hole for
transmission line to
outside the unit. ✻3
✻1 20HP indoor unit is shipped with B1 and B2 terminals of TB21 and A1 and A2 terminals of TB23 short-circuited respectively. When connecting wire to those terminals, do not eliminate this feature. If it is eliminated, the
units in one of the 2 refrigerant circuits may not operate.
✻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 AC220240V 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.
29
8. Air Conditioning the Computer Room
8-1 Main Features of the Floor-Duct Air Conditioners
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.
Ceiling
Free-access top floor
Computer
Filter
Caution
(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.
8-2 Features of air-conditioner for computer room
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.
30
8-3 Step-by-Step Plan for the Implementation of the Air-Conditioning
Purpose
Making decisions on the computer system
Basic
Conditions
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.)
Securing
Necessary
Rooms
Computer room, CVCF room, MT Disk Storage room
Supplementary computer room, system surveillance room
Programmer room, operator room
Battery room, transformer room
Decision to Install
the Air-Conditioning
System
Setting the Conditions
for the Room
Temperature/humidity Condition
Calculating
the Load
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.
31
8-4 Conditions for the Installation of Computer-Room Air Conditioners
(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.
Air intake
Air conditioner
Computer
Fan
Free-access
floor
Air discharge
(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.
32
8-5 Setting the Air conditioners
(1) Air-Conditioning 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
(2) Sample Selection of Air Conditioners
(2-1) Conditions
20.9kW
Computer-generated heat
5
Number of workers
20W/m2
Lighting
Indoor ˚CDB/Indoor WBT : 24˚C/17˚C
˚CDB of the air going into the computer : 18˚C
Temperature and humidity
60Hz
Frequency
(2-2) Building Conditions
(W: 4.5m, H: 1.5m) ✕ 2
Windows
Inside Measurement
Surroundings
Ceiling height 2.2m
Upstairs room, downstairs room, heat and air conditioning
1 Coefficient of Overall Heat Transmission U (W/m2 ·K)
Outer Walls
Inner Walls
Summer 3.6, Winter 3.8
2.05
Downward convection 3.36, upward convection 3.3
Ceiling
Floor (free access)
Downward convection 3.05, upward convection 4.56
Floor
Downward convection 2.42, upward convection 3.3
Windows
Summer 5.93, Winter 6.5
Window
2 Internal Load
Number of People in the Room 5
Lighting
20W/m2
Calculator
20.9kW
Draft
0.2 times/h
3 Volume of Outdoor Air Intake
25m3/h·person
33
(2-3) Calculating the Load and Selecting a Model
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%
1 Load (in the summer with air-conditioning)
< Sensible Heat > SH
Computer
20.9 kW
Lighting
Number of people in the room
Infiltration draft
Outer wall (heat transmission)
Windows (radiation)
1,800W
1.8 kW
5 persons ✕ 64 (U)
0.32 kW
3
(0.2 times/h) 39.6m ✕ 0.336 ✕ 8
0.11 kW
✕ 3.6 ✕ 8
0.25 kW
✕ 0.65 ✕ 188
1.91 kW
8.5m2
13.5m2
Windows (heat transmission)
13.5 ✕ 5.93 ✕ 8
0.64 kW
Inner wall(heat transmission)
61.6 ✕ 2.05 ✕ 4
0.5 kW
125m3 ✕ 0.336 ✕ 8
0.34 kW
Outside air
Total
26.8 kW
< Latent Heat > LH
Infiltration draft
Number of people in the room
Outside air
39.6 ✕ 834 ✕ 0.0117
0.39 kW
5 persons ✕ 82
0.41 kW
125m3 ✕ 834 ✕ 0.0117
1.22 kW
Total
2.0 kW
Total load is 28.8kW
2 Necessary Air Circulation
V=
26800
0.336 ✕ (24 -18)
÷ 60 = 221m3/min
3 Model Selection
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: 320m3/min can be accommodated with PUHY-P500YGM-A and PFD-P500VM-E.
34
8-6 Automatic Control of the Computer Room
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 necessary.
< Outdoor Unit >
TB3
✻2
✻1
Intake
Thermistor
RA
< Indoor unit >
Controller
Terminal Bed for
External Input/Output
Discharge Thermistor
Free-Access Floor
SA
Remote Controller
✻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.
35
9. Maintenance/Inspection
9-1. Maintenance/Inspection Schedule
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) Approximate Longevity of Various Parts
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.
Fan Belt
Check
Replace
every
after
6 months 40000 hours
6 months 40000 hours
6 months 8000 hours
Air Filter
3 months 5 years
Drain Pan
6 months 8 years
Yes
Drain Hose
6 months 8 years
Linear Expansion Valve
1 year
1 year
Yes
Yes
Yes
Unit
Parts
Fan Motor
Indoor
Bearing
Heat Exchanger
Float Switch
Display Lamp
Periodically
check
Yes
Yes
Yes
25000 hours
5 years
6 months 25000 hours
1year
8000 hours
Add lubricant once a year
Disposable parts
Maintenance schedule changes depending
on the local conditions
Yes
Yes
Yes
4-way valve
Linear Expansion Valve
Heat Exchanger
Pressure Switch
1 year
1 year
5 years
25000 hours
Yes
Yes
Inverter Cooling Fan
1 year
40000 hours
Yes
Fan motor
Remarks
Yes
6 months 40000 hours
6 months 40000 hours
1 year
25000 hours
1 year
25000 hours
Compressor
Outdoor
Daily
check
Yes
Yes
Yes
(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:
➀ When used in high temperature/high humidity area or when used in a place where the temperature
and/or humidity fluctuate greatly
➁ When plugged into an unstable power source (sudden change in voltage, frequency, wave distortions) (Do not exceed the maximum capacity.)
➂ When the unit is installed in a place where it receives vibrations or major impacts.
➃ 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.
36
Details of Maintenance/Inspection
Unit
Parts
Inspection
Cycle
Check points
Assessment
Fan motor
· Check for unusual noise
· Measure the insulation
resistance
· Free of unusual noise
· Insulation resistance over 1MΩ
Replace when insulation
resistance is under 1MΩ
Bearing
· Check for unusual noise
· Free of unusual noise
If the noise doesn't stop after
lubrication, change the oil.
Add lubricant once a year.
· Check for excessive slack
· Check for wear and tear
· Check for unusual noise
· Resistance (3-4kg/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
Adjust the belt
Replace if the belt length
exceeds 2% of the original
length, worn, or used over 8000
hours
· Check for clogging and tear
· Clean the filter
· Clean, free of damage
Clean the filter
Replace if extremely dirty or
damaged
· Check for clogging of the
drainage system
· Check for loosened bolts
· Check for corrosion
· Clean, free of clogging
· Free of loose screws
· No major disintegration
Clean if dirty or clogged
Tighten bolts
Replace if extremely worn
· Make sure the loop of the hose
has water to prevent air from
traveling through the hose
(Fill the hose with water)
· Check for clogging of the
drainage system
· Clean, free of clogging
· Free of wear and tear
Clean if dirty or clogged
Replace if extremely worm
· Perform an operation check
using the operation data
· Adequately controls the air
temperature
(Check temperature change on
the centralized controller)
Replace if malfunctioning
· Check for clogging, dirt, and
damage
· Clean, free of clogging or
damage
Clean
· 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
· Make sure the lamp comes on
· Comes on when the output is
on
Replace if the light does not
come on when the power is on
· Check for unusual noise
· Check insulation resistance
· Check for loosened terminals
· Free of unusual sound
· Insulation resistance over 1MΩ
· Free of loosened terminals
Replace if insulation resistance
goes below 1MΩ (under the
condition that the refrigerant
is not liquefied)
Tighten loosened bolts
Fan motor
· Check for unusual noise
· Measure insulation resistance
· Free of unusual sound
· Insulation resistance over 1MΩ
Replace if insulation resistance
goes below 1MΩ
Linear
expansion valve
· Perform an operation check
using the operation data
· Adequately controls the air
temperature
(Check temperature change on
the centralized controller)
Replace if malfunctioning
4-way valve
· 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
Pressure switch
· Check for torn wire, fraying,
and unplugged connectors
· Check insulation resistance
· No frayed or cut wires or
unplugged connectors
· Insulation resistance over 1MΩ
Replace when cut or shorted,
when the insulation resistance
goes below 1MΩ, or if there is a
history of abnormal operation
Inverter cooling
fan
· Check for unusual sound
· Measure insulation resistance
· Look for abnormal history
· Free of unusual sound
· Insulation resistance over 1MΩ
· No heatsink overheat protection
(4230,4330) on the report
Replace when producing unusual
sounds, when insulation resistance
goes under 1MΩ, or if there is a
history of abnormal operation.
Fan belt
Air filter
6
months
3
months
Indoor
Drain pan
Drain hose
6
months
Linear
expansion valve
1
year
Heat exchanger
Float switch
Display lamp
6
months
1
year
Compressor
6
months
Outdoor
What to do
Heat exchanger
1
year
37
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
Issued in Mar. 2006 MEE05K442
Printed in Japan
New publication, effective Mar. 2006
Specifications subject to change without notice