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CONTENTS
1. Specifications1-1 Main Features1-2 List of Possible Combinations of Indoor and Outdoor Units1-3 Unit Specifications
2. Capacity Curves2-1 Cooling Capacity2-2 Cooling Input2-3 SHF Curves2-4 Correction by refrigerant piping length2-5 Operation limit
3. Sound Levels3-1 Noise Level3-2 NC Curves3-3 Fan Characteristics Curves
4. External Dimensions 5. Electrical Wiring Diagrams 6. Refrigerant Circuit Diagram And Thermal Sensor 7. System Design
7-1 Refrigerant Piping System7-2 Control Wiring7-3 Types of switch settings and setting methods7-4 Sample System Connection7-5 External input/output specifications
8. Air Conditioning the Computer Room8-1 Main Features of the Floor-Duct Air Conditioners8-2 Features of air-conditioner for computer room8-3 Step-by-Step Plan for the Implementation of the Air-Conditioning8-4 Conditions for the Installation of Computer-Room Air Conditioners 8-5 Setting the Air conditioners8-6 Automatic Control of the Computer Room
9. Maintenance/Inspection9-1 Maintenance/Inspection Schedule
1123 444566 7788 9 13 17 191920212327 30303031323335 3636
Close controlPUHY-P-YGM-APFD-P-VM-E
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1. Specifications1-1.Main Features
1
(1) List of Models
<10HP System>
<20HP System>
Single refrigerant circuit
PUHY-P250YGM-A PUHY-P500YGM-A
10HP(Down flow): PFD-P250VM-E20HP(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.
When using a PFD-P500VM-E as an indoor unit, connect an outdoor unit PUHY-P500YGM-A toeach 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 PUHY-P250YGM-A toeach 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-50APUHY-P250YGM-A
Indoor Unit
PFD-P250VM-E
TB7 TB3 2 3
112V 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-EG-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 unitOutdoor 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-EPUHY-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-EPUHY-P250YGM-A x 2or PUHY-P500YGM-A
When using a PFD-P500VM-E as an indoor unit, connect 2 PUHY-P250YGM-A outdoor units toeach indoor unit and operate with a built-in remote control for the indoor unit.At factory shipment, this model of indoor unit is designed and set to accommodate a single refriger-ant circuit.Connection of two refrigerant circuits to the indoor unit requires setting change and pipe work. 1: Bold line indicates refrigerant piping (gas/liquid). This system consists of two refrigerant circuits. 2: Indicates TB3-type transmission line that connects the indoor and outdoor units.
This system consists of two refrigerant circuits. 3: Indicates TB7-type transmission line that allows the unit to communicate with the controller.
Outdoor Unit
PUHY-P250YGM-A
Indoor UnitPFD-P500VM-E
TB7 TB3 2
1
TB3
PUHY-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 31.53N ~ 380/400/415V 50/60Hz
Capacity
Model name
kWPower source
1
2
kWA
m3/minkW
kWkW
mm
dB(A)kg
Power inputCurrentFan
Airflow rateType Quantity
Motor outputTypeMotor outputCrankcase heater
Compressor
Refrigerant / LubricantExternal finish
High pressure protection
Inverter
CompressorFan
External dimension H x W x DProtectiondevices
Refrigerant piping diameter
High press. pipeLow press. pipe
Noise levelNet weight
1,840 x 990 x 840
Propeller fan x 12000.38
Hermetic6.7
0.045 x 1
R410A/MEL32Heat exchanger Salt resistant fin
Over current protection / Thermal protectionø9.52 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
6.66.811.1/10.5/10.211.4/10.9/10.5
PUHY-P250YGM-A (-BS)connected with PFD series
PUHY-P500YGM-A (-BS)connected with PFD series
Over current protection / Over heat protectionThermal switch
57/57
56.0 63.0Cooling Heating Cooling Heating
1,840 x 1,990 x 840
Propeller fan x 2400
0.38 x 2
8.2+5.30.045 x 2
ø15.88 Flareø28.58 Brazed
455
13.6 13.222.2/21.0/20.422.8/21.8/21.0
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˚CWBIndoor : 20˚CDBPipe length : 7.5m
Outdoor :Outdoor :Height difference : 0m
35˚CDB7˚CDB / 6˚CWB
<Cooling><Heating>
3N~380/400/415V(50Hz), 400/415V(60Hz)
PFD-P500VM-E
5.0Power source
kW
-
Power input
System capacity
A
m3/minPa
kg
dB(A)m
mm
Current
Heat exchanger
Fan
RefrigerantExternal finish
Type x QuantityAirflow rateExternal static pressure
kWMotor Output
Air filter
Refrigerant piping diameter 2
Refrigerant piping allowable length
Gas pipeLiquid 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 refrigerantcircuitTwo refrigerantcircuit
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
1601201204.42.2
380
59150
Gas pipeLiquid pipe ø 15.88 Brazed
ø 28.58 Brazed
Gas pipeLiquid pipe ø 9.52 Brazed (ø 12.7 for over 90m)
ø 22.2 Brazed
520
63150
R410AGalvanized steel plate (with polyester coating)
<MUNSEL 2.9GY 8.6/0.3(White) 7.2GB 3.2/5.3(Blue) or similar>
PP Honeycomb fabric (washable)
Thermal switch1,950 x 1,980 x 780
Protection devices (Fan)External dimensions H x W x D
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 Curves2-1. Cooling Capacity
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
-15 -10 -5 0 5 10 15 20 25 30 35 40 45
Indoor unit inlet temperature (˚CWB)
Indoor unit inlet temperature (˚CWB)
19
15
12
24
0.7
0.8
0.9
1.0
1.1
1.2
1.3
19
24
15
12
-15 -10 -5 0 5 10 15 20 25 30 35 40 45
Cap
acity
cor
rect
ion
coef
ficie
ntIn
put C
orre
ctio
n C
oeffi
cien
t
Outdoor unit inlet temperature (˚CDB)
Outdoor unit inlet temperature (˚CDB)
2-2. Cooling Input
The correction curves indicate the values measured at the point where the compressor wasoperated 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 (%)
SH
F
130% 120%110%100% 90% 80% 70%
Standard Capacity Ratio
Standard Capacity Ratio
0.93
0.4
0.5
0.6
0.7
0.8
0.9
1
30 40 50 60 70 80
RH (%)
SH
F
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 lengthTo obtain a decrease in cooling/heating capacity due to refrigerant piping extension, multiply by the capacitycorrection 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)
Cap
acity
cor
rect
ion
coef
ficie
nt
0.7
0.8
0.9
1
0 20 40 60 80 100 120 140 160 180
2-5. Operation limit
Indo
or te
mpe
ratu
re (
˚CW
B)
-15 0-5-10 5 10 15 20 25 30 35 40 451012
15
20
25
30
* 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.
Outdoor temperature (˚CDB)
• Heating
Outdoor temperature (˚CWB)
Indo
or te
mpe
ratu
re (
˚CD
B)
30
25
20
15
10
5-20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50
3. Sound Levels3-1. Noise Level
7
1m
1m
Measuredpoint
SeriesNoise Level
(dB [Type A])
PFD-P250VM-E 59
PFD-P500VM-E 63
(1) Outdoor Unit
(2) Indoor Unit
Measuredpoint
1m
1m
SeriesNoise Level
(dB [Type A])
PUHY-P250YGM-A 57
PUHY-P500YGM-A 60/61
(50Hz/60Hz)
8
3-2. NC Curves
3-3. Fan Characteristics Curves
PFD-P250VM-E PFD-P500VM-E: 50/60Hz, standard : 50/60Hz, standard
0
100
200
300
400
500
600
700
800
900
1000
130 140 150 160 170 180 190
Tota
l sta
tic p
ress
ure
(P
a)
Fan rotation speed
Internalresistance
1200rpm
1100rpm
1000rpm
900rpm
800rpm
Output 3.7kW
(Output 2.2kW)
136
Internal resistance (middle-high efficient filter )
184
Air volume (m3/min)
0
100
200
300
400
500
600
700
800
900
1000
250 270 290 310 330 350 370
Tota
l sta
tic p
ress
ure
(P
a)
255 272 318 345 368
Air volume (m3/min)
1100rpm
1200rpm
Fan rotation speed
Output 7.5kW
Output 5.5kW
1300rpm Internal resistance (middle-high efficient filter )
800rpm
900rpm
1000rpm
Internal resistanceStandard
With a middle-high efficient filter
PUHY-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 8000Hz10
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
OC
TAV
E B
AN
D P
RE
SS
UR
E L
EV
EL
(dB
) 0
dB =
20µ
Pa
OC
TAV
E B
AN
D P
RE
SS
UR
E L
EV
EL
(dB
) 0
dB =
20µ
Pa
OCTAVE BAND CENTER FREQUENCIES (Hz)
OCTAVE BAND CENTER FREQUENCIES (Hz)
63 125 250 500 1000 2000 4000 800010
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
OC
TAV
E B
AN
D P
RE
SS
UR
E L
EV
EL
(dB
) 0
dB =
20µ
Pa
OC
TAV
E B
AN
D P
RE
SS
UR
E L
EV
EL
(dB
) 0
dB =
20µ
Pa
OCTAVE BAND CENTER FREQUENCIES (Hz)
OCTAVE BAND CENTER FREQUENCIES (Hz)
63 125 250 500 1000 2000 4000 800010
20
30
40
50
60
70
80
90
Approximate minimum audible limit on continuous noise
Approximate minimum audible limit on continuous noise
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)
6750Hz
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
4. External Dimensions
PUHY-P250YGM-A Unit : mm
Not
e1.U
se th
e op
enin
g at
the
botto
m o
f the
uni
tw
hen
runn
ing
the
pow
er s
uppl
y lin
e fr
omth
e fr
ont o
r fr
om th
e si
de o
f the
uni
t.N
ote2
.Ple
ase
refe
r to
the
next
pag
e fo
r in
form
atio
nre
gard
ing
nece
ssar
y sp
acin
g ar
ound
the
unit
and
foun
datio
n w
ork.
166
8310
0
44 150
YY
20 70
80
100
90 10
408013
5
280
134
553
494
80 57
160
6576
8
3711
711
737
1575
1840
11
235
160
67
990
16
840
6720
720
767
78
XX
877
845(mounting pitch) 16
4590
0(m
ount
ing
pitc
h)45
265
ø53
125
Con
n. p
ipe(
Liqu
id)
ø9.
52 <
Fla
re>
Con
n. p
ipe(
Gas
)ø
22.2
<B
raze
d>
(Mou
ntin
g ho
le)
Air
outle
t
Air
inle
tA
ir in
let
ø62
Kno
ckou
t hol
e<
Hol
e fo
r po
wer
sup
ply>
Cha
ngea
ble
to ø
27,ø
33 b
y us
ing
atta
ched
con
duit
mou
ntin
g pl
ate
<A
cces
sory
>
ø27
Kno
ckou
t hol
e<
Bot
tom
hol
e fo
r c
ontr
ol w
iring
>
Kno
ckou
t hol
e<
Bot
tom
pip
ing
hole
>
Left
side
vie
w
ø27
Kno
ckou
t hol
e<
Left
side
hol
e fo
r c
ontr
ol w
iring
>
Kno
ckou
t hol
e<
Left
pipi
ng h
ole>
<A
cces
sorie
s>•
Ref
riger
ant (
Gas
) co
nn. p
ipe.
.....1
pc.
(Alre
ady
inst
alle
d on
the
unit)
• P
acki
ng fo
r co
nn. p
ipe.
......
......
...1
pc.
(Atta
ched
nea
r th
e ba
ll va
lve)
• C
ondu
it m
ount
ing
plat
eø
33, ø
27...
......
......
......
......
...1
pc.E
ach
• T
appi
ng s
crew
M4.
......
......
......
...2
pcs.
Cro
ss s
ectio
n Y
– Y
Cro
ss s
ectio
n X
– X
2X2-
14X
20 0
val h
ole
Top
vie
w
Fro
nt v
iew
Kno
ckou
t hol
e
Ser
vice
pan
el
Ref
rig. s
ervi
ce
valv
e (L
iqui
d)<
Fla
re>
Ref
rig. s
ervi
ceva
lve(
Gas
)<
Fla
nge>
Kno
ckou
t hol
e<
Fro
nt p
ipin
g h
ole>
136
10
PUHY-P500YGM-A Unit : mm
Not
e1.U
se th
e op
enin
g at
the
botto
m o
f the
uni
tw
hen
runn
ing
the
pow
er s
uppl
y lin
e fr
omth
e fr
ont o
r fr
om th
e si
de o
f the
uni
t.N
ote2
.Ple
ase
refe
r to
the
next
pag
e fo
r in
form
atio
nre
gard
ing
nece
ssar
y sp
acin
g ar
ound
the
unit
and
foun
datio
n w
ork.
44 150
83
162
135
40
89 10
3711
511
537
134100
280
80
80
20 70
494
145
553
1000
768
80 57
160
65
1840
157511
6868
205
205
100
235
160
67
78265
45
1990
4595
0(m
ount
ing
pitc
h)
877
840
1616 845(mounting pitch)
950(
mou
ntin
g pi
tch)
512
ø53
Con
n. p
ipe(
Gas
)ø
28.5
8<B
raze
d>C
onn.
pip
e(Li
quid
)ø
15.8
8<F
lare
>
YY
YY
XX
(Mou
ntin
g ho
le)
Kno
ckou
t hol
e<
Bot
tom
pip
ing
hole
>
ø27
Kno
ckou
t hol
e<
Bot
tom
hol
e fo
r c
ontr
ol w
iring
>
ø62
Kno
ckou
t hol
e<
Hol
e fo
r po
wer
sup
ply>
Cha
ngea
ble
to ø
46,ø
53 b
y us
ing
atta
ched
con
duit
mou
ntin
g pl
ate
<A
cces
sory
>
<A
cces
sorie
s>•
Ref
riger
ant (
Gas
) co
nn. p
ipe.
...1
pc.
(Alre
ady
inst
alle
d on
the
unit)
• P
acki
ng fo
r co
nn. p
ipe.
.....1
pc.
(Atta
ched
nea
r th
e ba
ll va
lve)
• C
ondu
it m
ount
ing
plat
eø
53, ø
46...
...1
pc.E
ach
• T
appi
ng s
crew
M4.
..2 p
cs.
Air
inle
t
Air
inle
t
Air
outle
t
Cro
ss s
ectio
n X
– X
Cro
ss s
ectio
n Y
– Y
ø27
Kno
ckou
t hol
e<
Left
side
hol
e fo
r c
ontr
ol w
iring
>
Kno
ckou
t hol
e<
Left
pipi
ng h
ole>
Left
side
vie
wF
ront
vie
w
Kno
ckou
t hol
e
Ser
vice
pan
el
Kno
ckou
t hol
e<
Fro
nt p
ipin
g ho
le>
Ref
rig. s
ervi
ce
valv
e (L
iqui
d)<
Fla
re>
Ref
rig. s
ervi
ceva
lve(
Gas
)<
Fla
nge>
Top
vie
w
3X2-
14X
20 O
val h
ole
11
PFD-P250VM-E Unit : mm390
50
50
100
Not
e1.
Be
sure
to s
et u
p a
trap
for
Em
erge
ncy
drai
n pi
ping
.(T
rap
heig
ht:b
eyon
d 10
0mm
)(T
rap
is n
ot n
eces
sary
for
mai
n dr
ain
pipi
ng.)
2.A
ppro
ve th
is fi
gure
bec
ause
it is
ref
used
for
the
impr
ovem
ent a
nd s
peci
ficat
ion
subj
ect t
o ch
ange
with
out n
otic
e.3.
Am
puta
te a
gas
pip
e/liq
uid
pipe
in th
e fix
ed h
eigh
t at t
he ti
me
of 2
ref
riger
ant
circ
uit c
onne
ctio
n, a
nd c
onne
ct it
with
the
loca
l pip
e.
Dra
in p
ipin
g co
nnec
tion
for
hum
idifi
er
Air
inle
t
500
or m
ore
200
or m
ore
400 or more
800 or more
Indo
or u
nit
Ser
vice
spa
ce
Uni
t sur
face
figur
e
Pip
e ex
ecut
ion
spac
e
Uni
t fro
ntfig
ure
Indo
or u
nit
Ser
vice
spa
ce
Hol
e fo
r th
e co
ntro
l wiri
ng
Lifti
ng b
olts
<2-
ø32
kno
ok o
utho
le>
Hol
e fo
r th
e po
wer
supp
ly(B
ody)
<N
omal
/Loc
al>
1380
Rem
ote
cont
rolle
r
A
Ref
rig. p
ipin
g <
gas>
ø22
.2 b
raze
Pow
er s
uppl
y:W
hite
Ope
ratin
g:G
reen
Che
ck:Y
ello
wF
ailu
re:R
ed(A
cces
sory
)F
ilter
Lam
p
<vi
ew fr
om A
>
320220
1950
20
100
462
580
Pan
el
<ø
32 k
nook
out
hol
e>
Air
inle
t
Con
trol
box
50
140
Hol
e fo
r th
e co
ntro
l wiri
ng <
ø32
kno
ok o
ut h
ole>
Mai
n dr
ain
pipi
ng c
onne
ctio
n <
Rp1
-1/4
>
<A
cces
sory
>· L
iftin
g bo
lts···
···4p
c.· F
ront
pan
el o
peni
ng a
nd c
losi
ng k
ey···
···1p
c.
100
Air
outle
t
Ref
rig. p
ipin
g <
liqui
d> ø
9.52
bra
ze
Hol
e fo
r th
e po
wer
sup
ply
<ø
32 k
nook
out
hol
e>
260
68
100
1180
780
1340
Hol
e fo
r th
e co
ntro
l wiri
ng(ø
60)
410
68
Hol
e fo
r th
e po
wer
sup
ply(
ø60
)32
1
220
Hol
e fo
r ga
s pi
pe c
onne
ctin
g(ø
42)
Air
outle
t
20
Bol
t hol
es:8
-ø18
140
305
100
518
Hol
e fo
r liq
uid
pipe
con
nect
ing(
ø24
)
65
<R
p1-1
/4>
Hol
e fo
r liq
uid
pipe
con
nect
ing(
ø24
)
87
186
20
Em
erge
ncy
drai
n pi
ping
con
nect
ion
<R
p1-1
/4>
Hol
e fo
r ga
s pi
pe c
onne
ctin
g(ø
42)
Cha
ngeo
ver
switc
h
340
100
150
260
171
20
401
740
12
PFD-P500VM-E Unit : mm
5010
0140
5050 390 10
0
68124
135
Not
e1.
Be
sure
to s
et u
p a
trap
for
Em
erge
ncy
drai
n pi
ping
.(T
rap
heig
ht:b
eyon
d 10
0mm
)(T
rap
is n
ot n
eces
sary
for
mai
n dr
ain
pipi
ng.)
2.A
ppro
ve th
is fi
gure
bec
ause
it is
ref
used
for
the
impr
ovem
ent a
nd s
peci
ficat
ion
subj
ect t
o ch
ange
with
out n
otic
e.3.
Am
puta
te a
gas
pip
e/liq
uid
pipe
in th
e fix
ed h
eigh
t at t
he ti
me
of 2
ref
riger
ant
circ
uit c
onne
ctio
n, a
nd c
onne
ct it
with
th
e lo
cal p
ipe.
Ref
rig. p
ipin
g <
liqui
d> in
2 r
efrig
. circ
uit s
yste
m ø
9.5
2 br
aze
No.
1
Ref
rig. p
ipin
g <
gas>
in 2
ref
rig. c
ircui
t sys
tem
type
P45
0:ø
19.
05 b
raze
, typ
e P
560:
ø 2
2.2
braz
e N
o.1
Ref
rig. p
ipin
g <
liqui
d> ø
15.
88 b
raze
Ref
rig. p
ipin
g <
gas>
ø 2
8.58
bra
ze
Hol
e fo
r N
o.2
gas
pipe
conn
ectin
g(ø
42)
in 2
re
frig
. circ
uit s
yste
m
Hol
e fo
r N
o.2
liqui
d pi
peco
nnec
ting(
ø 2
4) in
2
refr
ig. c
ircui
t sys
tem
Hol
e fo
r liq
uid
pipe
con
nect
ing(
ø 3
4)
Hol
e fo
r N
o.1
liqui
d pi
pe c
onne
ctin
g(ø
24)
in 2
ref
rig. c
ircui
t sys
tem
Bol
t hol
es:8
-ø 1
8
Hol
e fo
r N
o.1
gas
pipe
con
nect
ing(
ø 4
2)in
2 r
efrig
. circ
uit s
yste
m
Hol
e fo
r ga
s pi
pe c
onne
ctin
g(ø
48)
Mai
n dr
ain
pipi
ng c
onne
ctin
g<R
p1-1
/4>
Dra
in p
ipin
g co
nnec
tion
for
hum
idifi
er
<A
cces
sory
>· L
iftin
g bo
lts···
···4p
c.· F
ront
pan
el o
peni
ng a
nd c
losi
ng k
ey···
···1p
c.
Air
inle
t
Ser
vice
spa
ce
Indo
or u
nit
Pip
e ex
ecut
ion
spac
e
Pan
el o
peni
ngan
d cl
osin
g di
men
sion
Indo
or u
nit
Uni
t sur
face
figur
e
Ser
vice
spa
ce
400 or more
Uni
t fro
ntfig
ure
1000 or more 1
200
or m
ore
1.
It is
nec
essa
ry fo
r th
e re
mov
al
of th
e pa
nel b
eyon
d 60
0mm
.
500
or m
ore
710R
efrig
. pip
ing
<ga
s> in
2 r
efrig
. circ
uit s
yste
mty
pe P
450:
ø 1
9.05
bra
ze,
type
P56
0:ø
22.
2 br
aze
No.
2
680
<2-ø
32
knoo
k ou
tho
le>
<ø
32
knoo
k ou
t hol
e>
Air
outle
t
Air
inle
t
Pow
er s
uppl
y:W
hite
Ope
ratin
g:G
reen
Che
ck:Y
ello
wF
ailu
re1
:Red
Fai
lure
2:R
ed
<N
orm
al/L
ocal
>
(Acc
esso
ry)
<vi
ew fr
om A
>
<R
p1-1
/4>
Air
outle
t
Hol
e fo
r liq
uid
side
pip
e co
nnec
ting
or N
o.1
gas
side
pip
e co
nnec
ting(
ø 4
2)in
2 r
efrig
. circ
uit s
yste
m
Hol
e fo
r N
o.2
gas
side
pip
e co
nnec
ting(
ø 4
2)in
2 r
efrig
. circ
uit s
yste
m
100
100
1780
1940
100
2020
20
65
321
100
410
359
241
740
359
580
305
320220
370
20
Em
erge
ncy
drai
n pi
ping
con
nect
ion
<R
p1-1
/4>
Hol
e fo
r N
o.1
liqui
d si
de p
ipe
conn
ectin
g(ø
24)
in 2
ref
rig. c
ircui
t sys
tem
Hol
e fo
r th
e po
wer
sup
ply(
ø 6
0)
1950
780
Hol
e fo
r ga
s si
de p
ipe
conn
ectin
g or
N
o.2
liqui
d si
de p
ipe
conn
ectin
g(ø
48)
in 2
ref
rig. c
ircui
t sys
tem
440
Air
outle
t
185
379
135
Ref
rig. p
ipin
g <
liqui
d> in
2 r
efrig
. circ
uit
syst
em ø
9.5
2 br
aze
No.
2
68
120
Hol
e fo
r th
e co
ntro
l wiri
ng <
ø 3
2 kn
ook
out h
ole>
Hol
e fo
r th
e po
wer
sup
ply
<ø
32
knoo
k ou
t hol
e>
220
150
81
Hol
e fo
r th
e co
ntro
l wiri
ng(ø
60)
Pan
el
68
Lifti
ng b
olts
171
A
Con
trol
box
Lam
p
Filt
er
Rem
ote
cont
rolle
r
838
Hol
e fo
r th
e co
ntro
l wiri
ng
1980
124
68
Hol
e fo
r the
pow
ersu
pply
(Bod
y)
Cha
ngeo
ver
switc
h
13
5. Electrical Wiring DiagramsPUHY-P250YGM-A (Connected with PFD series)
*1
*1
–~ ~+ ~++
X01
Com
pres
sor
CN3D
OPE
NSH
ORT
ON
OFF
CN3D
1-2P
SHO
RTO
PEN
ON
OFF
NIG
HTM
ODE
1-3P
ON/
OFF
Radi
ator
pan
el te
mp.
det
ect(F
an)
THH
S5
CNCT
yello
wor
ange
red
brow
n
A2A1
TH11
TH5
TH6
TH7
TH8
Z20
DC
Cur
rent
Sen
sor
DC
CT
1 2
3 4
Powe
r sele
ction
conn
ector
CN41
CN40
1 2
3 4
1 2
3 4
1 2
3 4DC
CT
5 91
1 22 3 41 65
CNIN
V
LED1
opera
tion
LED2
error
Comp
resso
r ON/
OFF
Trou
bleLo
w p
ress
ure
sens
or
CNRS
3A
Hig
h pr
essu
re s
enso
r
CN3S
red
CNVC
C1CN3D
SW1
Ear
th te
rmin
alSW
2SW
3SW
4
LD1
ONON
ONOF
FOF
FON
OFF
ONOF
FOF
F
SW5
1
Rad
iato
r pan
el te
mp.
det
ect
(Com
pres
sor)
Cont
rol c
ircui
t boa
rd
10
21 5 6 9 13 14
SWU2
Addr
ess
setti
ng
SWU1
CN52
Cye
llow gr
een
red
X09
CNS2
blue
CNS1
blue
3
CN20
CN21
blue
13
F02
250V
AC6.
3A T
1 2
3 4
51
2 3
3
TB1
(Ter
min
al B
lock
)
Powe
r sou
rce3N
~38
0/400
/415V
50/60
Hz
blac
k
red
52C1
DCL
C2
red
14
DS1
(Dio
de s
tack
)
white
blac
k
10
CNDC
2
N
IPM
P
C4
MC1
Gat
e am
p bo
ard
1
ACCT -W
9
ACCT
ACCT
-U
X52
U
V
W
FAN
contr
ol bo
ard
CNVD
C
10
C1
R4R3
R1R2
ACNF
1(N
oise
Filte
r)
E
Filter
board
CNFG blue
L2
CNL1
CNL2
CNO
UTgr
een
CNIN
blue
C5ZN
R4
SWU3
012
CN15
V1
CNDC
1bl
ack
CNDR
1
bypa
ss o
utle
t tem
p.de
tect
at S
ub-c
ool c
oil
CNVC
C1
CNAC
2
MF1
CNFA
Nre
dSW
2SW
1
1
41
6
CNAC
3
LED1
opera
tion
LED2
error
CNFG
blue
CNCT
2bl
ue
black
CNTH
gree
n
THHS
1
red
7
CNRS
1
Powe
r circ
uit bo
ard 1
CNDC
2
CN15
V2
CNDR
2
TB3
(Ter
min
al B
lock
)M
1M
2
SM2
M1
TB7
(Ter
min
al B
lock
)
1
1 2
shie
ld
F02
700V
DC2A
Tre
d
white
blac
k
blue
red
white
blac
k
blue
red
blac
k
Motor
(Com
press
or)
F01
250V
AC2A
T
Refe
r to
the
serv
ice h
andb
ook
abou
t the
swi
tch
oper
atio
ns.
CENT
RAL C
ONTR
OL TR
ANSM
ISSI
ON LI
NE
CNRS
2
Inve
rter c
ontro
ller b
ox
Func
tion
dev
ice
liqui
d ou
tlet t
emp.
dete
ctat
Sub
-coo
l coi
l
Dis
char
ge p
ipe
tem
p. d
etec
t
OA
tem
p.de
tect
Pip
e te
mp.
dete
ct(H
ex o
utle
t)
Cho
ke c
oil(T
rans
mis
sion
)
Ther
mis
tor
Hig
h pr
essu
re s
witc
h
4-w
ay v
alve
Ele
ctro
nic
expa
nsio
n va
lve
(SC
coi
l)
Sol
enoi
d va
lve
(Hea
t exc
hang
er c
apac
ity c
ontro
l)
Sol
enoi
d va
lve
(Dis
char
ge-s
uctio
n by
pass
)
Mag
netic
con
tact
or(In
verte
r mai
n ci
rcui
t)
Cra
nk c
ase
heat
er(C
ompr
esso
r)
Z20
L1,L
263
LS
DC
reac
tor
(Pow
er fa
ctor
impr
ovem
ent)
63H
S63
H1
THH
S1
TH5
CN35
<S
ymbo
l exp
lana
tion>
TH11
TH8
LEV
1
1TH
HS5
L3L2
CNTH
gree
n
1 2
2
32
1
1 2
ON OFF
4
ON OFF
1 2
4
8
3
L1
1
1
L3L2L1
2
1
1 22
1 2
3
1 2
3 4
5
1
9
1
N
1234 1 2 3 4 1 9
21 32 1
CNRS
3B
CNTR
Sym
bol
CN38
blac
k
SV
5b
21S
4a,b
CH
11M
F1
52C
1
DC
L
SV
1
AC
CT
1
Nam
e
3
63H1
INDO
OR/O
UTDO
OR TR
ANSM
ISSI
ON LI
NE
CN04
AC
Cur
rent
Sen
sor
1
12V
CN512 1
W
3 2
V
Func
tion
setti
ng
51 2 3
1 2
3
4
3
CH11
X03
X08
CN32
X02
CN33
CN36
SV 5b
21
21S
4a
21S
4b
271 7 813 1
1 10
1 10
1 10
1
1
10
32
N
L3
F01
250V
AC6.
3A T
redwhiteblack
CNTY
P5CN
HCN
TYP4
CN01
CNL
blac
kCN
TYP1
red
CN02
1
R23
63HS
R22
63LS
7
2 1
63
2 1
3 2
12
12
1
U
CNLV
B re
d
dete
ctio
nci
rcui
t
LEV1
7
L1
5412
2
33
2
1
blackwhitered
Func
tion s
etting
dete
ctio
nci
rcui
t
6541 3
LD2
Mai
nten
ance
setti
ng
8
N
red
whiteblue
4
2
4 3
2
3 18
7 6
5
white
dete
ctio
nci
rcui
t
MF
Fan m
otor
(Hea
t exc
hang
er)W
1 32
TH7
SV1
shie
ld
PE
L1
SW
4-7:
OFF
(Com
pres
sor O
N/O
FF
a
nd N
IGH
T M
OD
E)
TH6
8
1
1
VU
X1112
3
NO
TE:T
he b
roke
n lin
es in
dica
te fi
eld
wiri
ng.
X01
*1: F
unct
ion
acco
rdin
g to
sw
itch
oper
atio
n.
(S
W4-
7,C
N3D
1-2
P,a
nd C
N3D
1-3
P)
1
52 C1
2
Fan
mot
or (R
adia
tor p
anel
)
T01
(Tra
nsfo
rmer
)
blac
k
Comp
resso
r ON/
OFF
NIGH
T MOD
E
SNOW
1
L2
1
14
PUHY-P500YGM-A (Connected with PFD series)
*1
*1
blackwhitered
LEV1
NO
TE:T
he b
roke
n lin
es in
dica
te fi
eld
wiri
ng.
ON/
OFF
Com
pres
sor
SHO
RT
CN3D
1-2P
1-3P
CN3D
OPE
NO
NO
FFO
PEN
SHO
RTO
NO
FF
NIG
HTM
ODE
*1: F
unct
ion
acco
rdin
g to
sw
itch
oper
atio
n.
(S
W4-
7,C
N3D
1-2
P,a
nd C
N3D
1-3
P)
SW
4-7:
OFF
(Com
pres
sor O
N/O
FF
a
nd N
IGH
T M
OD
E)
Gas
pip
e te
mp.
dete
ct(H
ex o
utle
t)TH
2
Mag
netic
con
tact
or(F
an m
otor
)52
FO
verlo
ad re
lay(
No.
2Com
pres
sor)
51C
2M
agne
tic c
onta
ctor
(No.
2Com
pres
sor)
52C
2
DC
Cur
rent
Sen
sor
DC
CT
<S
ymbo
l exp
lana
tion>
Sym
bol
Nam
eA
CC
T
DC
L
52C
1
MF3
CH
11,1
221
S4a
,b,c
SV
1,3
SV
5b,c
LEV
1
TH11
,12
TH5
TH6
TH7
TH8
THH
S1
63H
1,2
63H
S63
LSL1
,L2
Z20
AC
Cur
rent
Sen
sor
DC
reac
tor
(Pow
er fa
ctor
impr
ovem
ent)
Mag
netic
con
tact
or(In
verte
r mai
n ci
rcui
t)
Sol
enoi
d va
lve
(Dis
char
ge-s
uctio
n by
pass
)S
olen
oid
valv
e(H
eat e
xcha
nger
cap
acity
con
trol)
Ele
ctro
nic
expa
nsio
n va
lve
(SC
coi
l)
Fan
mot
or (R
adia
tor p
anel
)C
rank
cas
e he
ater
(Com
pres
sor)
4-w
ay v
alve
Ther
mis
tor
Dis
char
ge p
ipe
tem
p. d
etec
t
Pip
e te
mp.
dete
ct(H
ex o
utle
t)O
A te
mp.
dete
ctliq
uid
outle
t tem
p.de
tect
at S
ub-c
ool c
oil
bypa
ss o
utle
t tem
p.de
tect
at S
ub-c
ool c
oil
Rad
iato
r pan
el te
mp.
det
ect
(Com
pres
sor)
Hig
h pr
essu
re s
witc
hH
igh
pres
sure
sen
sor
Low
pre
ssur
e se
nsor
Cho
ke c
oil(T
rans
mis
sion
)Fu
nctio
n d
evic
e
Ear
th te
rmin
al
THH
S5
Radi
ator
pan
el te
mp.
det
ect(F
an)
Mot
or(C
ompr
esso
r)
Fan
mot
or(H
eat e
xcha
nger
)
Fan
mot
or(H
eat e
xcha
nger
)
blac
kwh
itere
d
Mot
or(C
ompr
esso
r)
blac
kwh
itere
d
white
bluewhite
red
powe
r sel
ectio
nco
nnec
tor
dete
ctio
nci
rcui
t
dete
ctio
nci
rcui
t
dete
ctio
nci
rcui
t
Inve
rter c
ontro
ller b
ox
redwhiteblack
CNH
CNL
blac
k
1
63HS
63LS
33
2
blackwhitered
2 2
3 1
12
3 1
black
red
DS(D
iode
sta
ck)
blac
k
white
red
Func
tion
setti
ng
LED1
opera
tion
LED2
error
Powe
r circ
uit bo
ard
Gate
amp b
oard
Filter
board
T01
(Tra
nsfo
mer
)
LED1
opera
tion
LED2
error
FAN
contr
ol bo
ard
Comp
resso
r ON/
OFF
Trou
bleComp
resso
r ON/
OFF
NIGH
T MOD
E
SNOW
Refe
r to
the
serv
ice h
andb
ook
abou
t the
swi
tch
oper
atio
ns.
Addr
ess
setti
ng
Func
tion
setti
ngM
aint
enan
cese
tting
Cont
rol c
ircui
t boa
rd
TB3
(Ter
min
al B
lock
)
TB7
(Ter
min
al B
lock
)
TB1
(Ter
min
al B
lock
)AC
NF(N
oise
Filte
r)
M2
M1
M2
M1
shie
ld shie
ld
CENT
RAL C
ONTR
OL TR
ANSM
ISSI
ON LI
NE
INDO
OR/O
UTDO
OR TR
ANSM
ISSI
ON LI
NE
Powe
r sou
rce3N
~38
0/400
/415V
50/60
Hz
L3 NL1 L2
blue
blac
kwh
itere
d
blue
N1 9 21
91
5 6 109 1413
10 14139651 2
blac
k
red
red
blac
k
101 SW5
OFF
OFFO
NOF
FON
OFF
OFFO
NON
ON
LD1
SW4
SW3
SW2
SW1
101
101
101
101
DCCT
L3
L2
12
S
F12
AC66
0V50
A F
F11
AC66
0V50
A F
red
white
blac
k
U
17
WV
MC2
1
1
321
F01
250V
AC2A
TCN
AC2
CNCT
12
N
R2
C1 C2
R1
R4R3CN
DC1
blac
k
CN15
V1
CNDR
1
CNDC
2
ACCT
-W
ACCT
-U
ACCT
CNDR
2
F02
700V
DC2A
T
CN15
V2
THHS
1
CNTH
gree
n
CNFG blue
CNDC
2
CNCT
2bl
ueCN
VCC1
CNFA
N red
CNRS
1
CNL1
CNL2
CNFG blue
CNIN
blue
CN41
CNO
UTgr
een
CNIN
V
CN21
blue
CNS1
blue
CN20
F02
250V
AC6.
3A T
CN40
F01
250V
AC6.
3A T
CNVD
C
CNS2
blue
CNRS
3B
CNVC
C1
CNRS
3A
CN51
CN3S re
d
8
2 1 0 SWU3
SWU1
SWU2
CN52
Cye
llow CN
32
CN33
CN34
red
CN36
CN35
gree
n
CNTY
P5CN
TYP4
R23
R22
CN01
TH11
CNTY
P1re
d
blac
k
CNTR
CNRS
2
4
Z20
L3
32
811
8
51C2
642
red
3412
U
43
MF2
3
X09
L1
52C1
DCL
N
IPM
P
C4
MC1
V
X52
U
EC5
ZNR4
X01
1 8
W
2
32
X07
1
CNRT
1
1
CN13
TH12
52 C1
5 1 32
1 7
32145
6
12V
4
3 1
21321
21
2
7
154
312
321
1
L3L2
4
4 531 2
CN3D
23 1
31
X03
1 32 1 2 3
X02
X08
WVL1
U
L2 L3
63H1
52F
51C2
2 3 41 32
L1
1212
1
8
5 61
X05
X06
94 6
31
4
21
14
4
SW1
OFF
24 3
1 O
N6
34
12
2
W
SW2
OFF
1 O
N4
V1
25
3412
2 13
41
1
4
L2
3CN
02
21
78
CNO
UT2
56
32
CNRT
2
CNCH
CN52
F
CN51
C2
45 3 2 1
5432
2
11 7
6
X2
X3
54
X1
1
1
1 32
2
7
CN52
C2 b
lue
3
54
32
52 C2
1
31 2
52C2
TH5
TH6
TH7
21S
4aSV
1
SV3
PE
A1
A
2gr
ay
yel
low
CH12
A2
A
1
13
14
brow
n
pu
rple
red
oran
ge
63H2
red
95 9
6
white
bl
ack
52C2
21S
4c
V W
6CN
OUT
1ye
llow
21321 3
321
CN05
SV 5c
CN04
52F
blue
A2
L1 L2
3
21
Relay
board
oran
geye
llow
red
brow
n
THHS
54
A1
7 4 1
CNTH
gree
n
421
321
X01
++
~~ –~+
blac
k
MF3
CNLV
Bre
d
SV 5b
CNAC
3
21
TH8
red
white
21S
4b
CH11
321
MF1
WVU
321
1
32
LD2
1U
CN38
5
3
blac
k
22
yello
w
L1
15
PFD-P250VM-E
Not
e:1.
The
dotte
d lin
es s
how
fiel
d w
iring
.2.
The
addr
ess
setti
ng o
f the
indo
or u
nit s
houl
d al
way
s be
odd
.3.
The
outd
oor u
nit t
o w
hich
the
indo
or u
nit i
s co
nnec
ted
with
the
trans
mis
sion
line
, th
e ad
dres
s of
the
outd
oor u
nit s
houl
d be
the
indo
or u
nit +
50.
4.M
ark
i
ndic
ates
term
inal
bed
,
con
nect
or,
b
oard
inse
rtion
con
nect
oror
fast
enin
g co
nnec
tor o
f con
trol b
oard
.5.
Use
a c
onta
ctor
for l
ow v
olta
ge. (
with
vol
tage
of D
C12
V m
axim
um c
urre
nt is
1m
A)
0F E D CBA9
09 8 7 6
54321
91 2 3 4
5678
0 87
654321
21
21
71
23
45
6
CN7V
CN24
CN25
X11
SW8
SW4
SW11
(1st
digit)
SW12
(2nd
digi
t)SW
14
SW7
SW2
SW1
SW3
SWC
SW5
Add
ress
(odd
)
12
34
56
12
32
12
12
12
11
2
T
CN3T
3
CN28
CN31
CN29
CN20
CN21
CN60
CN22
Z3
33P1
97
51
31
31
31
1
CNT
CND
CN90
CN33
CNP
54
32
16
54
32 CN
51
1
CN52
Deh
umid
ify
ZNR9
01DS
A1
CN3A
ZNR1
F901
X06
X05X
04
321 2
CN32
321X0
1
CN2MI.B
.
1
X07
Z1
Insi
de s
ectio
n of
con
trol b
ox
RC
21
21
TB15
Failu
re o
utpu
t
Dis
tant
loca
tion
on/o
ff<n
o vo
ltage
or c
urre
nt>
Sta
tus
outp
ut
Dis
tant
loca
tion
on/o
ff<w
ith v
olta
ge a
nd c
urre
nt>
Powe
r sup
ply
DC30
V, A
C100
/200
V
Sw
itch(
norm
al/lo
cal)
Pow
er s
uppl
y D
C12
~24V
Pow
er s
uppl
y
380/
400/
415V
(50H
z)
400
/415
V(6
0Hz)
DC
24~3
0V
Indo
or u
nit
Con
trol w
iring
LED
dis
play
(failu
re)
LED
dis
play
(sta
tus)
LED
dis
play
(pow
er s
uppl
y)
3N~
LED
dis
play
(che
ck)
SW
9
2 3 4 5154321
B2B1BCA2A1AC 54321C
IFB
3
L3A1S B1 L2L1 X1
11 22 1 6 5 1 2
PE
N
F1
3 4 5 6
31ZN
R1
31CN1
DSA1
PE
TB23
TB21
LL
TB22
CN53
TB2
S.B
.
CN54
L3
TB5
SH
IELD
L2L1 L4
FAN
over
cur
rent
dete
ctio
n
51F
Z1
ZNR2
52F
Z3
51F
52F
MF
TH24
TH21
TH22
TH23
6 5 4 3 2 1
LEV
SY
MB
OL
NA
ME
DS
A1
Sur
ge a
bsor
ber
LED
dis
play
(po
wer
sup
ply)
F90
1
ZNR1
, ZNR
2, ZN
R901
MF
I.B.
S.B
.IF
BT
B2
TB
5T
B15
TB
21
TB
22T
B23
F1
T LEV
52F
51F
33P
1
RC
L4L3L2L1Z3
Z1
X11
SW
C(I
.B.)
SW
14(I
.B.)
SW
12(I
.B.)
SW
11(I
.B.)
SW
9S
W4(
I.B.)
SW
3(I.B
.)S
W2(
I.B.)
SW
1(I.B
.)
Sur
ge a
bsor
ber
boar
d
Sw
itch
(out
let/i
nlet
tem
p.co
ntro
l)
Flo
at s
witc
h
Fus
e<6-
3/6A
>
Var
isto
r
Tra
nsfo
rmer
Ele
ctro
nic
linea
r ex
pan.
valv
eC
onta
ctor
(fan
I/D
)O
ver
curr
ent r
elay
(fa
n I/D
)
Fus
e<5A
>
The
rmis
tor
(inle
t tem
p.de
tect
ion)
Sw
itch
(con
nect
ion
No.
set)
Sw
itch
(for
mod
e se
lect
ion)
Sw
itch
(for
cap
acity
cod
e)S
witc
h (f
or m
ode
sele
ctio
n)S
witc
h (f
or m
odel
sel
ectio
n)
Aux
iliar
y re
lay(
chec
k)
LED
dis
play
(fa
ilure
)LE
D d
ispl
ay (
stat
us)
LED
dis
play
(ch
eck)
Sw
itch
(nor
mal
/loca
l)
TH
24T
H23
TH
22T
H21
Sw
itch
(1st
dig
it ad
dres
s se
t)S
witc
h (2
nd d
igit
addr
ess
set)
Fan
mot
orIn
door
con
trol
ler
boar
d
Pow
er s
ourc
e te
rmin
al b
edT
rans
mis
sion
term
inal
bed
Ext
erna
l inp
ut/o
utpu
t boa
rd
Tra
nsm
issi
on te
rmin
al b
ed
MA
Rem
ote
cont
rolle
r
Ter
min
al b
ed fo
r di
stan
t loc
atio
n on
/off
<W
ith v
olta
ge a
nd c
urre
nt>
Ter
min
al b
ed fo
r di
stan
t loc
atio
n on
/off
<N
o vo
ltage
or
curr
ent>
Aux
iliar
y re
lay(
fan
failu
re d
etec
tion)
Aux
iliar
y re
lay(
fan)
The
rmis
tor
(pip
ing
tem
p.de
tect
ion/
gas)
The
rmis
tor
(pip
ing
tem
p.de
tect
ion/
liqui
d)
The
rmis
tor
(out
let t
emp.
dete
ctio
n)
Ter
min
al b
ed fo
r di
stan
t loc
atio
n di
spla
y
Ext
erna
l inp
ut a
dapt
er
(PA
C-S
A88
HA
)
CN
525(
gree
n)
1(br
own)
Z
Indo
or u
nit
cont
orol
boa
rdR
elay
circ
uit
The
sign
al in
put o
f the
deh
umid
ify o
rder
is to
conn
ect w
iring
refe
rrin
g to
the
botto
m fi
gure
.
SW
Pow
er
Dis
tant
con
trol p
anel
SW
:Def
umid
ify o
rder
Z
:Rel
ay <
Not
e5>
(fiel
d su
pply
and
con
stru
ctio
n)
Z
16
PFD-P500VM-E
1.T
he d
otte
d lin
es s
how
fiel
d w
iring
.2.
It is
wiri
ng fo
r 1
refr
iger
ant s
yste
m a
t the
tim
e of
shi
ppin
g.
Cha
nge
wiri
ng a
nd S
W2,
3, 4
(N
o.1&
No.
2) a
s th
is fi
gure
in fi
eld
whe
n yo
u ch
ange
it to
2 r
efrig
eran
t circ
uit
3.S
et u
p th
e ad
dres
s of
No.
1 bo
ard
in th
e od
d nu
mbe
r, a
nd s
et u
p th
ead
dres
s of
No.
2 bo
ard
in th
e ev
en n
umbe
r.B
ut, s
et u
p th
e ad
dres
s of
the
No.
2 bo
ard
in th
e N
o.1
boar
d +
1.4.
The
out
door
uni
t to
whi
ch th
e in
door
uni
t is
conn
ecte
d w
ith th
etr
ansm
issi
on li
ne, t
he a
ddre
ss o
f the
out
door
uni
t sho
uld
be th
ein
door
uni
t +50
.5.
Set
up
the
zone
No.
(S
W14
) fr
om 1
to 5
whe
n yo
u co
nnec
t a c
once
ntra
tion
cont
rolle
r.(I
nsta
ll an
indo
or u
nit w
ithin
20
units
in th
e al
l 5 z
one.
)
6.M
ark
in
dica
tes
term
inal
bed
,
conn
ecto
r,
boa
rd in
sert
ion
conn
ecto
ror
fast
enin
g co
nnec
tor
of c
ontr
ol b
oard
.7.
Use
a c
onta
ctor
for
low
vol
tage
. (w
ith v
olta
ge o
f DC
12V
max
imum
cur
rent
is 1
mA
)
Not
e:
SW8
SW4
SW7
SW2
SWC
SW5
0F E D CBA9
09 8 7 6
54321
91 2 3 4
5678
0 87
654321
65743
21CN
24CN
25
1 22 1
X11
CN7V
Add
ress
(odd
)
SW11
(1st
digit)
SW12
(2nd
digi
t)SW
14
No.
1
CN51
CN52
Deh
umid
ify
13 4
51 2
3 45
2
ZNR9
01DS
A1ZN
R1F9
01X0
6X05
X04
X01
X07
CN3A
CN32
CN2M
I.B.1
321 2 3211
59
151
37
31CN
TCN
DCN
9013CN
33CN
P31
Z1TCN
3T3
1CN
2821
CN31 123
21CN29
32
22 1
11
CN20
CN21
CN60
CN22 21
654
Z3
33P1
SW1
SW3
TH24
-1
TH21
-1
TH22
-1
TH23
-1
LEV2
LEV1
1234566 5 4 3 2 1
AD
.B.
6543
1265
4312
6543
12
LEV1
ALE
V1B
LEV1
21
Insi
de s
ectio
n of
con
trol b
ox
RC
21
TB15
A1S B1
2 1 6 5
DC
24~3
0V
No.
1 In
door
uni
tC
ontro
l wiri
ng
LED
dis
play
(No.
1 fa
ilure
)
LED
dis
play
(sta
tus)
TB5-
1
SH
IELD
L3L1
1 3
ZNR1
31CN1
DSA1
S.B
.
3
L3L2L1
1 2
N
F1P
ower
sup
ply
3N~
380/
400/
415V
(50H
z)
400/
415V
(60H
z)
LED
dis
play
(pow
er s
uppl
y)
PETB
2
L5
3 4 5 6S
witc
h(no
rmal
/loca
l)S
W9
No1
.Fai
lure
out
put
Dis
tant
loca
tion
on/o
ff<n
o vo
ltage
or c
urre
nt>
No1
.Sta
tus
outp
ut
Dis
tant
loca
tion
on/o
ff<w
ith v
olta
ge a
nd c
urre
nt>
No2
.Sta
tus
outp
utN
o2.F
ailu
re o
utpu
t
Pow
er s
uppl
y D
C30
V, A
C10
0/20
0V
Pow
er s
uppl
y D
C12
~24V
LED
dis
play
(No.
2 fa
ilure
)
DC
24~3
0V
No.
2 In
door
uni
tC
ontro
l wiri
ng
LED
dis
play
(che
ck)
L4L2LL L
L
54321
S A2B2B2B1BCA2A1AC 54321C
IFBCN
54TB
22
CN53
TB21
TB23 S
HIE
LD TB5-
2 34
X11
1 2
PE
X12
<not
e2>
CN3A
1CN
2M1 2 3
CN32
21 32
1231I.B
.254321
CN52
54321 CN51
Deh
umid
ify
ZNR9
01
F901
ZNR1 DS
A1X0
1X0
7X0
4X0
5X0
6
CNP
CN33
CN90
CND
CNT
CN3T
12CN
22CN
21CN
20 11
22
CN29 12
321
CN31
12CN28
531
CN60
12345631
13
73
151
13
9
Z2<n
ote2
>
33P2
TZ3CN
25CN
24
12CN
7V
1234567
21X12
SW5
SWC
SW12
(2nd
digi
t)SW
11(1
st dig
it)SW
8
Add
ress
(odd
)
SW3
SW1
SW2
SW7
SW4
SW14
0F E D CBA9
09 8 7 6
54321
91 2 3 4
5678
0 87
654321
No.
2
FAN
over
cur
rent
dete
ctio
n
51F
Z1
ZNR2
Z2
52F
Z3
TH24
-2
TH21
-2
TH22
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TH23
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51F
52F
MF
NA
ME
SY
MB
OL
Sur
ge a
bsor
ber
DS
A1
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1, Z
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901
LED
dis
play
(N
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re)
LED
dis
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(st
atus
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pow
er s
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RC
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21T
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TB
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MF
Sur
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Sw
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Flo
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(con
nect
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No.
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lect
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acity
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witc
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or m
ode
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witc
h (f
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odel
sel
ectio
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Aux
iliar
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play
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itch
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mal
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l)
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24-2
SW
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W2(
I.B.)
SW
3(I.B
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W4(
I.B.)
SW
11(I
.B.)
SW
12(I
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SW
14(I
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SW
C(I
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X11
, X12
Z1,
Z2
Z3
L1 L2 L3 L4SW
9
TH
23-1
, TH
23-2
TH
22-1
, TH
22-2
TH
21-1
, TH
21-2
33P
1, 3
3P2
51F
52F
LEV
1, 2
TF1
F90
1
TB
23T
B22
Sw
itch
(1st
dig
it ad
dres
s se
t)S
witc
h (2
nd d
igit
addr
ess
set)
Fan
mot
orIn
door
con
trol
ler
boar
dA
dapt
er b
oard
Pow
er s
ourc
e te
rmin
al b
edT
rans
mis
sion
term
inal
bed
Ext
erna
l inp
ut/o
utpu
t boa
rd
Tra
nsm
issi
on te
rmin
al b
ed
Ter
min
al b
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t loc
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n on
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<W
ith v
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nd c
urre
nt>
Ter
min
al b
ed fo
r di
stan
t loc
atio
n on
/off
<N
o vo
ltage
or
curr
ent>
Aux
iliar
y re
lay(
fan
failu
re d
etec
tion)
Aux
iliar
y re
lay(
fan)
The
rmis
tor
(pip
ing
tem
p.de
tect
ion/
gas)
The
rmis
tor
(pip
ing
tem
p.de
tect
ion/
liqui
d)
The
rmis
tor
(out
let t
emp.
dete
ctio
n)
Ter
min
al b
ed fo
r di
stan
t loc
atio
n di
spla
y
Fus
e <
6.3/
6A>
Fus
e <
5A>
(fiel
d su
pply
and
con
stru
ctio
n)
Pow
er
SW
Indo
or u
nit
cont
orol
boa
rd
Z1(
brow
n)
5(gr
een)
CN
52
The
sign
al in
put o
f the
deh
umid
ify o
rder
is to
conn
ect w
iring
refe
rrin
g to
the
botto
m fi
gure
.
Rel
ay c
ircui
tE
xter
nal i
nput
ada
pter
(P
AC
-SA
88H
A)
SW
:Def
umid
ify o
rder
Z
:Rel
ay <
Not
e7>
Dis
tant
con
trol p
anel
Z
How
to c
onne
ct in
cas
e of
2 re
frige
rant
circ
uit.
Rem
ove
the
LEV
1B c
onne
ctor
fro
m A
D.B
. boa
rd, a
ndco
nnec
t it t
o C
N60
of
I.B.2
boa
rd.
Con
nect
a c
onne
ctor
toC
N3A
, CN
2M o
f I.B
.2bo
ard.
<not
e2>
6 5 4 3 2 1
CN60
65
43
21
CN3A
CN2M
I.B. 2
1 2 3 2 1
LEV2
<not
e2>
How
to s
et u
p to
SW
2, 3
, 4.
(In c
ase
of 2
refri
gera
nt c
ircui
t)
PFD
-P50
0VM
-E
(at t
he ti
me
of s
hipp
ing)
ON
65
43
21
ON
65
43
21
1098
7
ON
54
32
1 ON
54
32
1109
87
ON
65
43
21
ON
65
43
21
2 re
frige
rant
circ
uit
1 re
frige
rant
circ
uit
SW
2S
W3
SW
4
17
6. Refrigerant Circuit Diagram And Thermal SensorPUHY-P250YGM-A
21S
4a
21S
4b
CO
MP
O/S
CJ1
CJ2
63H
S
63LS
63H
SV
1
HE
X F
HE
X B
SV
5b
TH
8
TH
11
TH
5
TH
6
TH
7
CP
2S
T8
LEV
1S
CC
ST
4
ST
3
CP
1
Drie
r
ST
7
ST
6
AC
C
BV
1
BV
2
ST
1
ST
2
18
PUHY-P500YGM-A
21S
4a21
S4c
21S
4b
TH
6
CP
2
CP
1
TH
11T
H12
CO
MP
2O
ilTa
nk
CO
MP
1O/S
O/S CJ3
CJ1
63H
263
H1
63H
S
ST
7
ST
6
ST
5
SV
1
SV
3
CV
1C
V2
HE
X2b
(B)
HE
X1b
(F)
TH
5
TH
8
SC
C
CP
3
TH
7
ST
9D
rier
LEV
1S
T8
SV
5c
SV
5b
HE
X2a
(B)
HE
X1a
(F)
ST
2
ST
13S
T12
ST
11S
T10
CJ2
63LS
BV
2
AC
C
BV
1
ST
1
19
7. System Design7-1.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.)
CautionCharge 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 m150(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
Chargedrefrigerant amount(kg)
9.5P250
22.0P500
Outdoor unit
L
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 model4.0kg
<Connection to a system with one outdoor unit>
500 model indoor unit : When ø 9.52 pipes are used and the piping length is 80 m80(m) x 0.06(kg/m)+2.0kg=6.8kg
(Amount for the extension pipe to each outdoor unit)
<Connection to a system with two 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 lengthAllowable piping lengthAllowable height difference
<Refrigerant system with one outdoor unit>
<Amount of refrigerant to be added>
<Refrigerant system with two outdoor units>
Outdoor unit model Liquid pipe size Gas pipe sizeP250P500
1 Use ø 12.7 pipes when the pipe length exceeds 90 m.
ø 9.52 1ø 15.88
ø 22.2ø 28.58
7-2.Control Wiring
Restrictions when the PFD-type indoor units are connected (related to the system)
20
(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 useof 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 1.25mm2
Wiring specifications
All types of facilities
n/a
Shield cableCVVS · CPEVS · MVVS
System component
Maximum length: 200mMaximum length of centralized control transmission line and Indoor/Outdoortransmission 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 controller circuit board of the outdoor unit connected tothe PFD-type indoor units.
2. The outdoor units whose S/W is changed to the dedicated S/W described above cannot be con-nected 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 thePFD-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 out-door units and one indoor unit <P500 model only>), the addresses of the controller boardsNo.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) Address setting
21
7-3.Types of switch settings and setting methodsWhether 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, thechanged 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
Diameter0.3~1.25mm2
(0.75~1.25mm2) 2 3
Wiring specifications
VCTF · VCTFK · CVV · CVS · VVR · VVF · VCT
Maximum length: 200 mTotal 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 sys-tem. Refer to “Sample System Connection”.
SymbolUnit or controller
Main · SubIndoor unit
MA remote controller
Addresssetting range
IC01~50
(Note 1)
Address setting methodFactory setting
No address setting required.
00
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.
22
(5) Connection of two refrigerant circuits
When two refrigerant circuits are connected on site, make the switch settings on the controller circuitboard 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 beset 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 withthe MA remote controller.
Remote controller bodyDip switches
1
ON
2 3 4
Screwdriver
Remove the cover on the remote controller
Set Dip Switch No.1 on the remotecontroller 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.)
Grouping system Power supply switch connector connection
Not connectedNot 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)
Leave the male connector on CN41 as it is. (Factory setting)
Grouped 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
Grouped indoor units connected to different 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.
7-4.Sample System Connection
23
(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
TB3TB7M1 M2 M1 M2S
51
IC
TB5-1A1 B1 S
01
TB5-2A2 B2 S
02
A B
TB151 2
MA
NO
L1Leave 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) 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. Switch setting>Address setting is required as follows.
Main Controller
Sub Controller Settings to be made with the sub/main switch
IC
IC
OC
1
2
Notes
3MA
MA
51~100
01~50
01~50
00
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 (1.25mm2 or more)
L1 200m
Ste
ps Unit or controller
Main
Sub
Indoorunit
MAremotecontroller
Addresssetting range
Address setting method
Outdoor unit
Factorysetting
Main
Assign a sequential odd number starting with "01" to the upper indoor controller.
Zone number (SW14) setting is required. (Setting range: between 1 and 5)
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
24
Control Wiring Diagram
Notes Maximum Allowable Length
Wiring and Address Setting
NO
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) 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 controlDaisy-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
IC
OC
1
2
Notes
3MA
MA
51~100
01~50
01~50
00
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 (1.25mm2 or more)
L1, L2 200m<b. Transmission line for centralized control>
Maximum Length via outdoor unit (1.25mm2 or more)L1 + L31 + L2 500m
Ste
ps Unit or controller
Main
Sub
Indoorunit
MAremotecontroller
Addresssetting range
Address setting method
Outdoor unit
Factorysetting
Main
Assign a sequential odd number starting with "01" to the upper indoor controller.
Zone number (SW14) setting is required. (Setting range: between 1 and 5)
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
TB3TB7M1 M2M1M2 S
51
IC
TB5-1A1 B1 S
01
TB5-2A2B2 S
02
OC
TB3TB7M1M2M1M2 S
52
A B
TB151 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 connected2 System connected to two outdoor units
25
(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
NONO
Leave the male connector on CN41 as it is. OC
TB3TB7M1 M2M1 M2 S
51
IC
TB5-1A1 B1 S
01
TB5-2A2 B2 S
02
A B
TB151 2
MA(Main)
A B
MA(Sub)
L1
A1 B2
MA
m1m2
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
IC
OC
1
2
Notes
3MA
MA
51~100
01~50
01~50
00
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 (0.3-1.25mm2 or more)
m1 + m2 200m
Ste
ps Unit or controller
Main
Sub
Indoorunit
MAremotecontroller
Addresssetting range
Address setting method
Outdoor unit
Factorysetting
Main
Assign a sequential odd number starting with "01" to the upper indoor controller.
Zone number (SW14) setting is required. (Setting range: between 1 and 5)
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
26
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 2-core 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
IC
OC
1
2
Notes
3MA
MA
51~100
01~50
01~50
00
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).
Ste
ps Unit or controller
Main
Sub
Indoorunit
MAremotecontroller
Addresssetting range
Address setting method
Outdoor unit
Factorysetting
Main
Assign a sequential odd number starting with "01" to the upper indoor controller.
Zone number (SW14) setting is required. (Setting range: between 1 and 5)
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
TB3TB7M1M2M1M2 S
51
IC
TB5-1A1 B1 S
01
TB5-2A2 B2 S
02
A B
TB151 2
MA(Main) MA(Sub)
L1Leave the male connector on CN41 as it is. OC
TB3TB7M1M2M1 M2 S
53
IC
TB5-1A1B1 S
03
TB5-2A2 B2 S
04
A B
TB151 2
L1Leave 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 connected4 System in which two indoor units are grouped with the MA remote controller
7-5.External input/output specifications
27
(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
<With voltage> Power Source: DC12~24V Electrical Current: Approximately 10mA (DC12V)
<Standard Pulse>
Sending a command to perform dehumidifi-cation with priority
LevelRefer to the wiring diagram <Dehumidification command> shown on the next page.
· Level [Dip SW1-9 OFF]
Output
No.1OperationStatus
Obtaining signals indicating operation status of indoor units in each refrigerant circuit.
Relay a-contact output DC 30V or AC 100V/200V
Standard Current : 1AMinimum Current : 1mA
No. 1Error Status
Obtaining signals indicating error status of indoor units in each refrigerant circuit.
No. 2OperationStatus
Obtaining signals indicating operation status of indoor units in each refrigerant circuit.
No. 2Error 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
28
(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
Short Circuit
SW11
CN53
1
2
3
4
5
1
2
3
4
5
TB21
TB22
TB23
XA
XB
XC
XEXD
XE
XD
XC
XB
XACOM
1
2
BC
B1
B2
AC
A1
Short Circuit
A2
3
4
5
CN54
Maximum : 100 m
<Input with Applied Voltage>DC12~24VElectrical current input (per contact)Approximately 10mA (DC12V)
SW12Remote start/stop switchEach pressing of the SW (Pulse input) switches between ON and OFF.
Remote start/stop Each pressing pf the SW (Pulse input) switches
between ON and OFF.
External powesource
<Input without voltage applied>
Minute-current contact: DC12V 1mA
SW11
<Relay contact output>DC30V or less 1AAC220-240V 1A
No.1 Operation Status Indicator LampL1
No.1 Error Status Indicator LampL2
Power supplyfor 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 UnitConfirm 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.”)
1 Brown
SW: Dehumidification command Z : Relay
(Contact: Minimum applicable load DC12V 1mA or less)
Relay power supply
Indoor unitcontroller circuit board
Adapter forremote display(PAC-SA88HA) Relay circuit Remote controller board
Z
SW
CN52
5 Green
Z
<Dehumidification command>
29
(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.
54
32
1CO
MB2
B1BC
A2A1
AC
TB23TB21
TB22
CN
53C
N54
1
1
Fix the wire on the high-voltage (AC220-240V) clamp. Pull the wire through the hole for transmission line to outside the unit. 3
Fix the wire on the low-voltage (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 20HP indoor unit is shipped with B1 and B2 terminals of TB21 and A1 and A2 terminals of TB23 short-circuit-ed respectively. When connecting wire to those terminals, do not eliminate this feature. If it is eliminated, theunits 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 theunit to malfunction.
3 Do not bundle with minute-voltage (DC30V or below) wire, since noise interference from such wire may causethe unit to malfunction.
Caution1) 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.
30
8. Air Conditioning the Computer Room8-1 Main Features of the Floor-Duct Air Conditioners
8-2 Features of air-conditioner for computer room
Filter
Free-access top floor
Ceiling
Com
pute
r
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 issent directly to the machine.
2 It provides a comfortable environment for the operator, since the air can be conditioned to best suit theneeds 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 existingmachines, since the entire floor serves as the air duct.
(1) Unlike plenum ventilation and overhead-duct type conditioners, since the conditioned air is not mixedwith 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 thoroughlyremoved before installing the unit.
(3) Since the existing floor is cooled by the unit, it may produce dews on the ceiling of the room downbelow.
Air-conditioner for computer room is designed to maintain a constant room temperature and humidity. Forunderfloor air supply systems, providing air that meets predetermined requirements is a must. The com-pressor installed in this unit runs year around. The capacity controlled compressor regulates the outlet airtemperature (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 dehu-midification 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 tem-perature due to a load inside the room. Therefore, the absolute humidity drops whereas the relativehumidity may not drop to a target humidity.
Caution
8-3 Step-by-Step Plan for the Implementation of the Air-Conditioning
31
Basic Conditions
Securing Necessary Rooms
Decision to Install the Air-Conditioning System
Selecting the Air-Conditioner 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
8-4 Conditions for the Installation of Computer-Room Air Conditioners
32
Computer
Fan
Air conditioner
Air intake
Free-accessfloor
Air discharge
(1) Outdoor Temperature and Humidity
Generally the values set for general air conditioners are used, although the value higher than the maxi-mum outdoor temperature and humidity may be set for devices like computer-room air conditioners thatmust 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 tobe set in consultation with the manufacturers. The most basic conditions include keeping dew condensa-tion and static electricity from forming. It is also necessary to keep the room free of dust to ensure asmooth 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 certainvolume of cold air in proportion to the amount of heat produced by the device. The inlet panel is located atthe 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 preferredmethod. If 3 is chosen, the unit method (package method) is more economical than the central method.
8-5 Setting the Air conditioners
33
20.9kW
5
20W/m2
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 conditioningcapacity has to be determined by calculating the load.
2 Unlike the outdoor air, computer load remains constant throughout the year. However, it is possiblethat there are considerable fluctuations within a day. This is due to the fact that, depending on the timeof the day, there are changes in the number of computers that are turned on and that the differentcomputer systems are in operation.
3 If there is a plan to expand the current computer system in the future, it is important to include theload for the units to be added in the future when calculating the thermal load because it is practicallyimpossible 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/m2
Calculator 20.9kWDraft 0.2 times/h
3 Volume of Outdoor Air Intake
25m3/h·person
Window
(2-3) Calculating the Load and Selecting a Model
34
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) 39.6m3 0.336 8
8.5m2 3.6 8
13.5m2 0.65 188
13.5 5.93 8
61.6 2.05 4
125m3 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 kWTotal
Infiltration draft
Number of people in the room
Outside air
39.6 834 0.0117
5 persons 82
125m3 834 0.0117
0.39 kW
0.41 kW
1.22 kW
2.0 kWTotal
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 typeIndoor ˚CDB 24˚C / Indoor ˚CWB 17˚C outdoor ˚CDB 32˚CCapacity of the Moment 54.3kW SHF = 0.92Capacity of Sensible Heat 54.3 0.92 = 49.9/kWStandard Air-Flow Volume: 320m3/min can be accommodated with PUHY-P500YGM-A and PFD-P500VM-E.
8-6 Automatic Control of the Computer Room
35
1 2
< Outdoor Unit >
Free-Access Floor
< Indoor unit >IntakeThermistor
Discharge Thermistor
RA
SA
TB3
Controller
Terminal Bed forExternal Input/Output
Remote Controller
ExamplePFD-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 dehumidi-fier. Install such components as necessary.
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.
9. Maintenance/Inspection9-1. Maintenance/Inspection Schedule
36
Indo
orO
utdo
or
Fan Motor 6 months 40000 hours Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
YesYes
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 1year 8000 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
PartsCheck every
Replace after
Daily check
Periodically check Remarks
Yes4-way valve 1 year 25000 hours
Unit
Having the units inspected by a specialist on a regular basis, in addition to regular maintenance such aschanging the filters, will allow the users to use them safely and in good condition for an extended period oftime.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 mayneed 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 stoppageB. 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 greatly➁ When plugged into an unstable power source (sudden change in voltage, frequency, wave distor-
tions) (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 thatcannot be predicted.
Holding of PartsWe 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.
Details of Maintenance/Inspection
37
· 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 1MΩ
· 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
· Free of unusual noise
Replace when insulation resistance is under 1MΩ
· 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 cloggedTighten boltsReplace if extremely worn
· 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 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
· 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.
· 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 for unusual noise· Measure insulation resistance
· Free of unusual sound· Insulation resistance over 1MΩ
Replace if insulation resistance goes below 1MΩ
· 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
· Perform an operation check using the operation data
· Adequately controls the air temperature
Replace if malfunctioning
· Check for clogging and tear· Clean the filter
· Clean, free of damage Clean the filterReplace 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 wornRemove foreign objects
· 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 cloggedReplace if extremely worm
· 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
Adjust the beltReplace 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 pointsInspection
CycleUnit What to doAssessment
Drain pan
Drain hose
Inverter cooling fan
Float switch
Heat exchanger
Pressure switch
4-way valve
Indo
orO
utdo
or
1 year
1 year
1 year
Heat exchanger
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
Issued in Mar. 2006 MEE05K442Printed in Japan
New publication, effective Mar. 2006Specifications subject to change without notice
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