Mitsubishi Electric SUH-1.6VR2 Operating manual

TECHNICAL & SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
CONTENTS
1. TECHNICAL CHANGES ···········································2
2. COMBINATION OF INDOOR OUTDOOR UNITS·····2
3. PART NAMES AND FUNCTIONS·····························3
4. SPECIFICATIONS·····················································4
5. DATA··········································································7
6. OUTLINES AND DIMENSIONS ······························10
7. WIRING DIAGRAM ·················································13
8. REFRIGERANT SYSTEM DIAGRAM ···························19
9. TROUBLESHOOTING ············································28
10. DISASSEMBLY PROCEDURE ·······························32
11. PARTS LIST ····························································48
No. OC282
REVISED EDITION-B
OUTDOOR UNIT
Outdoor unit
[Model names] [Service Ref.]
SUH-1VR SUH-1VR.TH
SUH-1.6VR SUH-1.6VR.TH
SUH-1.6VR2 SUH-1.6VR2.TH
SUH-2VR SUH-2VR.TH SUH-2VR1.TH SUH-2VR2.TH
SUH-2.5VR SUH-2.5VR.TH
SU-1.6NR SU-1.6NR.TH
SU-2NR SU-2NR.TH
SU-2.5NR SU-2.5NR.TH
SU-1VR SU-1VR.TH SU-1VR.TH-T
SU-1.6VR SU-1.6VR.TH SU-1.6VR.TH-T
SU-1.6VR2 SU-1.6VR2.TH SU-1.6VR2.TH-T
SU-2VR SU-2VR.TH SU-2VR.TH-T
SU-2VR1.TH SU-2VR1.TH-T
SU-2.5VR SU-2.5VR.TH SU-2.5VR.TH-T
• SU-1VR.TH-T, SU-1.6VR2.TH-T and SU-2VR1.TH-T
has been added.
• Instruction of troubleshooting has been added to
pege 29 ans 30.
• Please void OC282 REVISED EDITION-A.
OC282-A--1.qxp 03.1.28 4:29 PM Page 1

2
1TECHNICAL CHANGES
2COMBINATION OF INDOOR OUTDOOR UNITS
SEH-1.6AR.TH
SEH-1.6AR1.TH
SEH-2AR.TH
SEH-2.5AR.TH
SE-1.6AR.TH
SE-1.6AR1.TH
SE-2AR.TH
SE-2.5AR.TH
SE-1.6AR.TH-T
SE-1.6AR1.TH-T
SE-2AR.TH-T
SE-2.5AR.TH-T
SLH-1AR.TH
SLH-1.6AR.TH
SLH-2AR.TH
SL-1AR.TH
SL-1.6AR.TH
SL-2AR.TH
SL-1AR.TH-T
SL-1.6AR.TH-T
SL-2AR.TH-T
VR
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1.6
Service Manual No.
OC281 REVISED EDITION-A
OC280 REVISED EDITION-A
Service Ref. 2 2.5 2.5
11.6 2 2.5 1
VR
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VR1
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2.5
1.6
VR2
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1.6 2
VR
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VR
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1
Indoor unit SUH- • .TH
Heat pump type Outdoor unit Cooling only type
SU- • .TH SU- • .TH-T
VR1
VR2
(REVISED EDITION-A)
SUH-2VR1.TH SUH-2VR2.TH
● OUTDOOR HEAT EXCHANGER has changed.
● RESTRICTOR VALVE has changed.
● CAPILLARY TUBE has changed.
({4.0X{2.4XL660) ({3.0X{2.0XL250)
OC282-A--1.qxp 03.1.28 4:29 PM Page 2

3
PART NAMES AND FUNCTIONS
3
Air intake
Air outlet
Drain outlet
Piping
Drain hose
Air inlet
Air outlet
SUH-1VR.TH SUH-1.6VR.TH SUH-2VR.TH SUH-2.5VR.TH
SUH-1.6VR2.TH SUH-2VR1.TH
SUH-2VR2.TH
SU-1.6NR.TH SU-2NR.TH SU-2.5NR.TH
SU-1VR.TH SU-1.6VR.TH SU-2VR.TH SU-2.5VR.TH
SU-1.6VR2.TH SU-2VR1.TH
SU-1VR.TH-T SU-1.6VR.TH-T SU-2VR.TH-T SU-2.5VR.TH-T
SU-1.6VR2.TH-T SU-2VR1.TH-T
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4
4SPECIFICATIONS
SUH-2VR.TH
SUH-2VR1.TH
SUH-2VR2.TH
Single phase, 220-240V, 50Hz
33.18
NH-38VMDT
1700
C-R: 1.07 C-S: 2.26
RA6V50-OF
WHT-BLK : 116
BLK-RED : 111
28(990)
850
605
290
59
52
810-845
1.8
MS-32(N-1) O1.2
SUH-2.5VR.TH
NH-47VMDT
2200
C-R: 0.96 C-S: 2.70
RA6V85-AA
45(1590)
870
850
295
72
53
720-750
2
2.4
MS-32(N-1) O1.2
WHT-BLK : 62.7
BLK-YLW : 30.2
YLW-RED : 62.9
1
Power supply
Service Ref.
W
"
"
m3/min(CFM)
mm
mm
mm
kg
dB
rpm
kg
R
k"
Compressor
Outdoor
fan motor
Dimensions Width
Height
Depth
RT61(at 0:)
Weight
Special
remarks
Model
Output
Winding resistance (at 20:)
Model
Winding resistance (at 20:)
Airflow
Sound level (Hi)
Fan speed (Hi)
Fan speed regulator
Refrigerant filling capacity (R-22)
Refrigerant oil
Thermistor
Power supply
Service Ref.
W
"
"
m3/min(CFM)
mm
mm
mm
kg
dB
rpm
kg
R
k"
Compressor
Outdoor
fan motor
Dimensions Width
Height
Depth
RT61(at 0:)
Weight
Special
remarks
Model
Output
Winding resistance (at 20:)
Model
Winding resistance (at 20:)
Airflow
Sound level (Hi)
Fan speed (Hi)
Fan speed regulator
Refrigerant filling capacity (R-22)
Refrigerant oil
Thermistor
SUH-1VR.TH
Single phase, 220-240V, 50Hz
SUH-1.6VR.TH
RH-174VGHT
800
C-R: 3.30 C-S: 5.80
PN6V23-UA
WHT-BLK : 353
BLK-RED : 321
28(990)
780
540
255
33
47
710-760
0.8
MS-56 O0.30
RH-247VHAT
1200
C-R: 2.13 C-S: 3.91
1
1.65
33.18
SUH-1.6VR2.TH
RH-277VHAT
1300
C-R: 1.80 C-S: 3.00
1.4
RA6V40-EE
WHT-BLK : 130
BLK-RED : 135
36(1270)
850
605
290
43
50
780-820
MS-56 O0.52
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5
SU-2VR.TH SU-2VR1.TH
SU-2VR.TH-T SU-2VR1.TH-T SU-2.5VR.TH
SU-2.5VR.TH-T
Single phase, 220-240V, 50Hz
33.18
NH38VMDT
1700
C-R: 1.07 C-S: 2.26
RA6V50-OF
WHT-BLK : 116
BLK-RED : 111
28(990)
850
605
290
55
52
810-845
1
1.6
MS-32(N-1) O1.2
NH47VMDT
2200
C-R: 0.96 C-S: 2.70
RA6V60-AB
39(1380)
850
605
290
61
53
860-890
2
2.15
MS-32(N-1) O1.2
WHT-BLK : 81
BLK-YLW : 92.2
YLW-RED : 102
Power supply
Service Ref.
W
"
"
m3/min(CFM)
mm
mm
mm
kg
dB
rpm
kg
R
k"
Compressor
Outdoor
fan motor
Dimensions Width
Height
Depth
RT61(at 0:)
Weight
Special
remarks
Model
Output
Winding resistance (at 20:)
Model
Winding resistance (at 20:)
Airflow
Sound level (Hi)
Fan speed (Hi)
Fan speed regulator
Refrigerant filling capacity (R-22)
Refrigerant oil
Thermistor
SU-1VR.TH
SU-1VR.TH-T
Single phase, 220-240V, 50Hz
SU-1.6VR.TH
SU-1.6VR.TH-T
RH-174VGHT
800
C-R: 3.30 C-S: 5.80
RA6V23-HC
WHT-BLK : 353
BLK-RED : 321
28(990)
780
540
255
32
45
710-760
0.8
MS-56 O0.30
RH-247VHAT
1200
C-R: 2.13 C-S: 3.91
1
33.18
RA6V40-EE
WHT-BLK : 130
BLK-RED : 135
37(1310)
850
605
290
38
50
780-820
0.9
MS-56 O0.52
SU-1.6VR2.TH
SU-1.6VR2.TH-T
RH-277VHAT
1300
C-R: 1.80 C-S: 3.00
Power supply
Service Ref.
W
"
"
m3/min(CFM)
mm
mm
mm
kg
dB
rpm
kg
R
k"
Compressor
Outdoor
fan motor
Dimensions Width
Height
Depth
RT61(at 0:)
Weight
Special
remarks
Model
Output
Winding resistance (at 20:)
Model
Winding resistance (at 20:)
Airflow
Sound level (Hi)
Fan speed (Hi)
Fan speed regulator
Refrigerant filling capacity (R-22)
Refrigerant oil
Thermistor
OC282-A--1.qxp 03.1.28 4:29 PM Page 5

6
SU-1.6NR.TH SU-2NR.TH
Single phase, 220V, 60Hz
RH-207NHDT
1000
C-R: 1.68 C-S: 2.78
RA6V40-EE
WHT-BLK : 130
BLK-RED : 135
38(1340)
38
51
820
0.9
MS-56 O0.52
NH-33NCDT
1500
C-R: 0.92 C-S: 1.93
RA6V50-OF
WHT-BLK : 116
BLK-RED : 111
39(1380)
850
605
290
55
52
860
1.65
MS-32(N-1) O0.85
33.18
SU-2.5NR.TH
NH-38NBDT
1700
C-R: 0.83 C-S: 1.83
RA6V60-AB
41(1450)
61
54
930
2
2.15
MS-32(N-1) O1.2
WHT-BLK : 81
BLK-YLW : 92
YLW-RED : 102
1
Power supply
Service Ref.
W
"
"
m3/min(CFM)
mm
mm
mm
kg
dB
rpm
kg
R
k"
Compressor
Outdoor
fan motor
Dimensions Width
Height
Depth
RT61(at 0:)
Weight
Special
remarks
Model
Output
Winding resistance (at 20:)
Model
Winding resistance (at 20:)
Airflow
Sound level (Hi)
Fan speed (Hi)
Fan speed regulator
Refrigerant filling capacity (R-22)
Refrigerant oil
Thermistor
OC282-A--1.qxp 03.1.28 4:29 PM Page 6

7
DATA5
NOISE CRITERION CURVES
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-70
NC-20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
SUH-1VR.TH 47
SPL(dB) LINE
<50Hz>
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-70
NC-20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
SUH-1.6VR.TH
SUH-1.6VR2.TH 50
SPL(dB) LINE
<50Hz>
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-70
NC-20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
SUH-2VR.TH
SUH-2VR1.TH
SUH-2VR2.TH
52
SPL(dB) LINE
<50Hz>
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-70
NC-20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
SUH-2.5VR.TH Hi
Lo
NOTCH 53
51
SPL(dB) LINE
<50Hz>
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8
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-70
NC-20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
SU-1VR.TH
SU-1VR.TH-T 45
SPL(dB) LINE
<50Hz>
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-70
NC-20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
SU-1.6NR.TH 51
SPL(dB) LINE
<60Hz>
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-70
NC-20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
SU-1.6VR.TH
SU-1.6VR2.TH
SU-1.6VR.TH-T
SU-1.6VR2.TH-T
50
SPL(dB) LINE
<50Hz>
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-70
NC-20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
SU-2VR.TH
SU-2VR1.TH
SU-2NR.TH
SU-2VR.TH-T
SU-2VR1.TH-T
52
SPL(dB) LINE
<50/60Hz>
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9
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-70
NC-20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
SU-2.5NR.TH Hi
Lo
NOTCH 54
50
SPL(dB) LINE
<60Hz>
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-70
NC-20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
SU-2.5VR.TH
SU-2.5VR.TH-T Hi
Lo
NOTCH 53
50
SPL(dB) LINE
<50Hz>
1m
UNIT
MICROPHONE
Ambient temperature 35°C (Cooling) / 7°C (Heating)
Test conditions are based on JIS Z8731
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10
6OUTLINES AND DIMENSIONS
320
25
43-
35-
155
90
104
74
260
10
780
500
122
40
540
320 285 255
Service panel
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) [9.52
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) [6.35
Air out
Air in
Air in
109 32
110
147
Drainage
3holes [33
If clearance
behind the outdoor
units only 40B or 50B
side Amust be
fully open.
10cm or more
10cm or more
10cm or more
Outdoor
unit
35cm or more
REQUIRED SPACE
A
40cm or more
SUH-1VR.TH
SU-1VR.TH
SU-1VR.TH-T
Unit: mm
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11
Unit: mm
350
Drainage
3holes 16.2
35
248
20
290 310 345
10cm or more
10cm or more
10cm or more
50cm or more
35cm or more
If the right/left sides or
back side is vacant,the
front has only to be 50cm
unobstructed.
If the front or right/left sides
are vacant, the top has only
to be 10cm unobstructed.
605
29220
50 183 500 161
850 74
30
100
157
35
30
Service panel
Liquid refrigerant
pipe joint
Refrigerant pipe
(flare)
Gas refrigerant
pipe joint
Refrigerant pipe
(flare)
[12.7 (SUH-1.6VR(2).TH) (SU-1.6NR.TH)
(SU-1.6VR(2).TH,SU-1.6VR(2).TH-T)
[15.88 (SUH-2VR.TH) (SU-2/2.5NR.TH)
(SU-2/2.5VR.TH,SU-2/2.5VR.TH-T)
[6.35 (SUH-1.6/2VR(2).TH) (SU-1.6/2NR.TH)
(SU-1.6/2VR(2).TH,SU-1.6/2VR(2).TH-T)
[9.52 (SU-2.5NR.TH)
(SU-2.5VR.TH,SU-2.5VR.TH-T)
SUH-1.6VR.TH SUH-2VR.TH
SUH-1.6VR2.TH SUH-2VR1.TH
SUH-2VR2.TH
SU-1.6NR.TH SU-2NR.TH SU-2.5NR.TH
SU-1.6VR.TH SU-2VR.TH SU-2.5VR.TH
SU-1.6VR2.TH SU-2VR1.TH
SU-1.6VR.TH-T SU-2VR.TH-T SU-2.5VR.TH-T
SU-1.6VR2.TH-T SU-2VR1.TH-T
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12
100 10
1000For 10 units or less
200
Outdoor Unit-Necessary surrounding clearance (Concentrated installation) The upper side must be open.
Outdoor Unit-Necessary surrounding clearance
200
10
10
10Note:Allow adequate
upper clearance
150
500
500 Service space
Front opening
Handle for moving
138
95 Rear piping hole
23
33
Rear fresh air intake
Side air intake
724295
Outlet guide installation hole
302
Air intake
Air intake
Air outlet
870
185 185
500
330
362 1715 39.5 27.5
Terminal block for indoor and outdoor unit connection
Terminal block for power line
Handle for moving
179 524
441
337
352
403
553 850
40 60524
Service panel
Refrigerant-pipe flared connection [15.88 5/8F Refrigerant-pipe flared connection [9.52 3/8F
Knock out hole for front piping (refrigerant,drainage and wiring)
Knock out hole for right piping (refrigerant,drainage and wiring)
R20
R20
60
120
4553
25 max.
Knock out holes for power line 2-[27
Standard bolt length
65
Front right piping holes- detail figures
80
17
42
45
12
R6
104 33
Bottom piping hole
2-U-shaped notched holes
Drain hole
Drain hole
2-12o23 Oval holes (standard bolt M10)
Handle for moving
Unit : mm
SUH-2.5VR.TH
More than 350 mm
More than 10 mm
Open as a rule More than 500 mm if the front and both sides are open.
More than 100 mm More than 200 mm if three area obstacles to both sides.
Open as a rule More than 500 mm if the back both sides and top are open.
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13
WIRING DIAGRAM
7
SUH-1VR.TH
CN720
52C
X62
21S4
CN721
MF
SR61
CN611
MC
3
2
1
locking lever
1Slide the sleeve.
2Pull the wire while
pushing the locking lever.
sleeve
WHT
WHT
VLT VLT
NO COM
52C
w
TAB21
WHT
RED
RED
WHT
w
BLU
RED
BLK
CN730
C65
DEICER P.C. BOARD
RT61
F61
IC881
X62
CN711
BLK
NR61
TRANS
TAB20
RS
C
C1
TO INDOOR UNIT CONNECTING
3w
NAME SYMBOL NAME SYMBOL NAME SYMBOL
C1
C65
DSAR
F61
IC881
COMPRESSOR CAPACITOR
FAN MOTOR CAPACITOR
SURGE ABSORBER
FASE (2A)
DC/DC CONVERTER
NOTE :1. Use copper conductors only (For field wiring).
2. “w” shows the terminals with a lock mechanism, so they cannot be
removed when you pull the lead wire.
Be sure to pull the lead wire by pushing the locking lever (projected part)
of the terminal with a finger.
MC
MF
NR61
RT61
SR61
COMPRESSOR (INNER THERMOSTAT)
FAN MOTOR (INNER THERMOSTAT)
VARISTOR
DEFROST THERMISTOR
SOLID STATE RELAY
TB
X62
21S4
52C
TERMINAL BLOCK
4-WAY VALVE RELAY
4-WAY VALVE SOLENOID COIL
COMPRESSOR CONTACTOR
w
TB
12VDC
220-240V~ 2
WHT
DSAR
wBLU
GRN/YLW
N4
3
2
1
BLK BLK
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14
SUH-1.6VR.TH SUH-2VR.TH
SUH-1.6VR2.TH SUH-2VR1.TH
SUH-2VR2.TH
220-240V
12VDC
RED
BLK
BLU
FWHT
WHT
WHT
DSAR
TB
GRN/YLW
RED
W
W
WW
W
W
W
W
W
3
2
N
TO INDOOR
UNIT
CONNECTING
WHT
BLU
BLK
WHT
ORN
RED
MF
BLU
WHT
A1 A2
VLT YLW
CR
52C1
BLU
CZ WHTWHT
T3/6L3/5
L1/1 T1/2
52C1 WHT
C1 RED
BLK
S
C
R
MC
4
TAB20
52C
3
YLW
CN730
2
1
3
C65
SR61
X62
NR61
TRANS
IC881
BLK
CN721
BLK
21S4
DEICER
P.C. BOARD
CN711 CN661
123
RT61
4
F61
2
1
3
4
TB
CZ SURGE ABSORBER 3
CR SURGE ABSORBER 2
IC881 DC/DC CONVERTER
F61 FUSE (2A)
CONTACTOR
4-WAY VALVE SOLENOID COIL
21S4
X62
MF FAN MOTOR
<INNER THERMOSTAT>
MC COMPRESSOR
<INNER THERMOSTAT>
SR61
RT61
NR61 VARISTOR
F
C65
SYMBOL NAME NAME
C1
DSAR
SYMBOL
COMPRESSOR CAPACITOR
SURGE ABSORBER 1FAN MOTOR CAPACITOR
FUSE (2A)
TERMINAL BLOCK
52C1
52C
COMPRESSOR CONTACTOR
4-WAY VALVE RELAY
SOLID STATE RELAY
DEFROST THERMISTOR
NAME SYMBOL
NOTE :1. Use copper conductors only. (For field wiring)
2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers
(N,2,3 and ;).
3. Symbols below indicate.
/:Terminal block, : Connector
4. ”w” shows the terminals with a lock mechanism,so they cannot be removed when you pull the lead wire.
Be sure to pull the wire by pushing the locking lever (projected part) of the terminal with a finger.
1Slide the sleeve.
2Pull the wire while pushing the locking lever.
OC282-A--1.qxp 03.1.28 4:29 PM Page 14

15
SUH-2.5VR.TH
RED
ORN
WHT
BLK
YLW
12VDC TB
YLW
2
1
BLK
WHT
ORN
RED
3
4
5
6
MF
X1 BRN
SR61
X62
BLK
CN721
CN730
2
1
3
BLK
21S4
15
3
C2 CN711 CN661
123
RT61
4
A2
A1
ORN WHT
YLWVLT
TB2
CR
WHT
4
52C1
F61
NR61
TRANS
IC881
220-240V~
DSAR
GRN/YLW
RED
W
W
W
W
WW
3
2
N
TO INDOOR UNIT
CONNECTING
WHT RED 7
RED
VLT
BLU 26F1 X1
WHT
TAB20
52C
3
YLW DEICER
P.C. BOARD
BLU
WHTWHT CZ
T3/6L3/5
BLU L1/1 T1/2
52C1 WHT
C1 RED
BLK
S
C
R
MC
BLU 8
F
CZ SURGE ABSORBER 3
CR SURGE ABSORBER 2
IC881 DC/DC CONVERTERF61 FUSE (2A)
CONTACTOR
4-WAY VALVE SOLENOID COIL
21S4
X62
MF FAN MOTOR
<INNER THERMOSTAT>
MC COMPRESSOR
<INNER THERMOSTAT>
TB,TB2
SR61
RT61
NR61 VARISTOR
F
C2
SYMBOL NAME NAME
C1
DSAR
SYMBOL
COMPRESSOR CAPACITOR
SURGE ABSORBER 1
FAN MOTOR CAPACITOR
FUSE (2A)
TERMINAL BLOCK
52C1
THERMAL REED SWITCH
26F1
X1 FAN MOTOR RELAY
52C
COMPRESSOR CONTACTOR
4-WAY VALVE RELAY
SOLID STATE RELAY
DEFROST THERMISTOR
NAME
SYMBOL
NOTE :1. Use copper conductors only. (For field wiring)
2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers
(N,2,3 and ;).
3. Symbols below indicate.
/:Terminal block, : Connector
4. ”w” shows the terminals with a lock mechanism,so they cannot be removed when you pull the lead wire.
Be sure to pull the wire by pushing the locking lever (projected part) of the terminal with a finger.
1Slide the sleeve.
2Pull the wire while pushing the locking lever.
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16
SU-1VR.TH
SU-1VR.TH-T
RED
WHT
RED
BLU
locking lever
sleeve
COMPRESSOR CONTACTOR 52C
VLT YLW
BLU
WHT
RED
52C 52C
2
1
3
C2
WHT
BLK
RED
WHT
MF
MC
CR
A2 A1
BLU L1/1
L3/5 R
C
S
BLK
RED
C1
T1/2
T3/6BLU
GRN/YLW
3
2
N
TB
TO INDOOR UNIT CONNECTING
220-240V~
220-240V~
w
w
w
1Slide the sleeve.
2Pull the wire while
pushing the locking lever.
NAME
SYMBOL NAME SYMBOL NAME SYMBOL
CR
C1
C2
SURGE ABSORBER
COMPRESSOR CAPACITOR
FAN MOTOR CAPACITOR
NOTE :1. Use copper conductors only (For field wiring).
2. “w” shows the terminals with a lock mechanism, so they cannot be
removed when you pull the lead wire.
Be sure to pull the lead wire by pushing the locking lever (projected part)
of the terminal with a finger.
MC
MF
TB
COMPRESSOR (INNER THERMOSTAT)
FAN MOTOR (INNER THERMOSTAT)
TERMINAL BLOCK
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17
SU-1.6NR.TH
SU-2NR.TH
NOTE :1. Use copper conductors only. (For field wiring)
2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers
(N,2,3 and ;).
3. Symbols below indicate.
/:Terminal block, : Connector
4. ”w” shows the terminals with a lock mechanism,so they cannot be removed when you pull the lead wire.
Be sure to pull the wire by pushing the locking lever (projected part) of the terminal with a finger.
1Slide the sleeve.
2Pull the wire while pushing the locking lever.
BLK
BLK
YLW
VLT
26C
BLU
WHT
RED
RED BLU
WHT
ORN
RED
52C 52C
4
3
2
1
C2
WHT
BLK
ORN
RED
WHT
MF
MC
CR
A2 A1
BLU
F TB2
L1/1
L3/5 R
C
S
BLK
RED
C1
T1/2
T3/6
BLU
GRN/YLW
2
3
TO INDOOR
UNIT CONNECTING
W
W
W
TB
220V, 60Hz
220V, 60Hz
THERMAL SWITCH26C
TB2 TERMINAL BLOCKF FUSE(2A)
CR SURGE ABSORBER
TERMINAL BLOCK
COMPRESSOR CONTACTOR52C
TB
FAN MOTOR
(INNER THERMOSTAT)
(INNER THERMOSTAT)
COMPRESSOR
MC
FAN MOTOR CAPACITOR
COMPRESSOR CAPACITOR
C2
C1
NAME
SYMBOL NAME SYMBOL NAME SYMBOL
MF
N
YLW
VLT
BLK
CR
A2 A1
26C
BLK
BLU
ORN
BLU
X1
26F1
F
RED
8
7
BLU
RED
WHT
52C
TB2
RED
C2
GRN/YLW
2
3
RED
N
W
W
W
TB
220V, 60Hz
220V, 60Hz
L1/1
L3/5
MC R
C
S
BLK
RED
C1
WHT
52C
T1/2
T3/6
BLU
TO INDOOR
UNIT CONNECTING
1
3
5
X1 6
5
4
3
2
1
YLW
MF
YLW
BLK BLK
WHT
RED
ORN WHT ORN
RED
THERMAL SWITCH26CTB2 TERMINAL BLOCKF FUSE(2A)
CR SURGE ABSORBER
THERMAL LEAD SWITCH26F1
FAN MOTOR RELAYX1
TERMINAL BLOCK COMPRESSOR CONTACTOR52CTB
FAN MOTOR
(INNER THERMOSTAT)
(INNER THERMOSTAT)
COMPRESSOR
MF
MC
FAN MOTOR CAPACITOR
COMPRESSOR CAPACITOR
C2
C1
NAME
SYMBOL NAME SYMBOL NAME SYMBOL
SU-2.5NR.TH
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18
SU-1.6VR.TH
SU-1.6VR2.TH
SU-2VR.TH
SU-2VR1.TH
SU-1.6VR.TH-T
SU-1.6VR2.TH-T
SU-2VR.TH-T
SU-2VR1.TH-T
NOTE :1. Use copper conductors only. (For field wiring)
2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers
(N,2,3 and ;).
3. Symbols below indicate.
/:Terminal block, : Connector
4. ”w” shows the terminals with a lock mechanism,so they cannot be removed when you pull the lead wire.
Be sure to pull the wire by pushing the locking lever (projected part) of the terminal with a finger.
1Slide the sleeve.
2Pull the wire while pushing the locking lever.
VLT YLW
BLU
WHT
WHT
RED
RED BLU
WHT
ORN
RED
52C 52C
4
3
2
1
C2 WHT
BLK
ORN
RED
WHT
MF
MC
CR
A1 A2
BLU
FTB2
L1/1
L3/5
R
C
S
BLK
RED
C1
T1/2
T3/6
BLU
GRN/YLW
2
3
TO INDOOR UNIT CONNECTING
N
TB
220-240V,50Hz
220-240V,50Hz
W
W
W
W
W
W
YLW
VLT
BLU
ORN 1
3
5
X1
BLU
X1
26F1
FRED8
7
BLU
RED
WHT
52C
CR
TB2
WHT
RED
A1 A2
6
5
4
3
2
1
YLW
C2
MF
YLW
BLK BLK
WHT
RED
ORN WHT ORN
RED
L1/1
L3/5
MC R
C
S
BLK
RED
C1
WHT
52C
T1/2
T3/6
BLU
GRN/YLW
2
3RED
TO INDOOR
UNIT CONNECTING
N
TB
220-240V,50Hz
220-240V,50Hz
W
W
W
SU-2.5VR.TH
SU-2.5VR.TH-T
TB2 TERMINAL BLOCKF FUSE(2A)
CR SURGE ABSORBER
TERMINAL BLOCK
COMPRESSOR CONTACTOR52C
TB
FAN MOTOR
(INNER THERMOSTAT)
(INNER THERMOSTAT)
COMPRESSOR
MF
MC
FAN MOTOR CAPACITOR
COMPRESSOR CAPACITOR
C2
C1
NAME
SYMBOL NAME SYMBOL NAME SYMBOL
TB2 TERMINAL BLOCKF FUSE(2A)
CR SURGE ABSORBER
THERMAL LEAD SWITCH26F1
FAN MOTOR RELAYX1
TERMINAL BLOCK COMPRESSOR CONTACTOR52CTB
FAN MOTOR
(INNER THERMOSTAT)
(INNER THERMOSTAT)
COMPRESSOR
MF
MC
FAN MOTOR CAPACITOR
COMPRESSOR CAPACITOR
C2
C1
NAME
SYMBOL NAME SYMBOL NAME SYMBOL
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19
REFRIGERANT SYSTEM DIAGRAM
8
Outdoor
heat
exchanger
Flared connection
Defrost
thermistor
RT61
Flared connection
Stop valve
Stop valve
(with service port)
(#100)
Strainer
Capillary tube
({3.0x{1.8xL330)w1
({3.0x{1.6xL420)w2w1 SUH-1.6VR.TH
w2 SUH-1.6VR2.TH
Capillary
tube
({3.0x{1.6xL550)w1
({3.0x{1.8xL550)w2
Restrictor valve
Refrigerant flow in cooling
Compressor
Accumulator
Strainer 1
(#100)
valve
Muffler
Refrigerant flow in heating
Refrigerant pipe [12.7
(Option)
(with heat insulator)
Refrigerant pipe
(Option) [6.35
(with heat insulator)
Discharge
Pressure
Regulator
Reversing
Outdoor
heat
exchanger
Flared connection
Flared connection
Stop valve
Stop valve
(with service port)
(#100)
Strainer 2 Capillary tube
({3.0x{1.4xL580)
Capillary tube
({3.0x{1.6xL400)
Restrictor valve
Refrigerant flow in cooling
Compressor
Accumulator
Strainer 1
(#100)
valve
Muffler
Refrigerant flow in heating
Refrigerant pipe [9.52
(Option)
(with heat insulator)
Refrigerant pipe
(Option) [6.35
(with heat insulator)
Discharge
Pressure
Regulator
Reversing
Defrost
thermistor
RT61
Capillary
tube
({3.0X{1.4XL800)X2
SUH-1.6VR.TH
SUH-1.6VR2.TH
SUH-1VR.TH
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20
Outdoor
heat
exchanger
Flared connection
Distributor
Defrost
thermistor
RT61
Flared connection
Ball valve
(with service port)
Ball valve
(#100)
Strainer 3
Strainer 2
(#100)
Capillary tube
({4.0x{2.0xL410)
Refrigerant flow in cooling
Compressor
Charge
plug
Accumulator
Muffler
Reversing
valve
Refrigerant flow in heating
Refrigerant pipe [15.88
(Option)
(with heat insulator)
Refrigerant pipe
(Option) [9.52
(with heat insulator)
Discharge
Pressure
Regulator
Outdoor
heat
exchanger
Flared connection
Defrost
thermistor
RT61
Flared connection
Stop valve
Stop valve
(with service port)
(#100)
Strainer
Capillary tube
({4.0X{2.4XL660)···2VR(1).TH
({3.0X{2.0XL250)···2VR2.TH
Capillary
tube
({3.0X{1.6XL860)X2
Restrictor valve
Refrigerant flow in cooling
Compressor
Accumulator
Strainer 1
(#100)
valve
Muffler
Refrigerant flow in heating
Refrigerant pipe [15.88
(Option)
(with heat insulator)
Refrigerant pipe
(Option) [6.35
(with heat insulator)
Discharge
Pressure
Regulator
Reversing
SUH-2VR.TH
SUH-2VR1.TH
SUH-2VR2.TH
SUH-2.5VR.TH
OC282-A--1.qxp 03.1.28 4:29 PM Page 20