- 113 -
[
VI
Refrigerant Circuit ]
Ther-
mistor
TH11
(Dis-
charge)
1. Detects discharge air temper-
ature
2. Provides high-pressure pro-
tection
Resis-
tance
check
0°C[32°F] : 698kohm
10°C[50°F] : 413kohm
20°C[68°F] : 250kohm
30°C[86°F] : 160kohm
40°C [104°F] :104kohm
50°C[122°F] : 70kohm
60°C[140°F] : 48kohm
70°C[158°F] : 34kohm
80°C[176°F] : 24kohm
90°C[194°F] : 17.5kohm
100°C[212°F] :13.0kohm
110°C[230°F] : 9.8kohm
TH6
(Inlet wa-
ter tem-
perature)
1. Detects heat source unit inlet
water temperature
2. Operates the solenoid valve of
the heat exchanger for capac-
ity control
0°C[32°F] : 15kohm
10°C[50°F] :9.7kohm
20°C[68°F] :6.4kohm
25°C[77°F] :5.3kohm
30°C[86°F] :4.3kohm
40°C [104°F]:3.1kohm
Resis-
tance
check
TH9
(Outlet
water
tempera-
ture)
Water heat exchanger freeze
prevention
THINV
Controls the opening of the LEV
that regulates the refrigerant flow
to the inverter cooling heat ex-
changer
THHS
Inverter
heat sink
tempera-
ture
Heat sink
Controls inverter cooling fan
based on THHS temperature
0°C[32°F] : 181kohm
10°C[50°F] :105kohm
20°C[68°F] : 64kohm
25°C[77°F] : 50kohm
30°C[86°F] : 40kohm
40°C [104°F]: 26kohm
Solenoid
valve
SV1
Dis-
charge-
suction
bypass
1. High/low pressure bypass at
start-up and stopping, and ca-
pacity control during low-load
operation
2. High-pressure-rise prevention
AC208/230V
Open while being powered/
closed while not being powered
Continuity
check with
a tester
SV4a-
SV4d
Heat ex-
changer
capacity
control
Controls heat source unit heat
exchanger capacity
AC208/230V
Closed while being powered/
open while not being powered
SV7a,7b,
7c
Part
name
Symbols
(func-
tions)
Notes
Usage
Specifications
Check
method
R = 7.465k
120
R = 4057
R =
7.465
25/120
t
4057 273 t
1
393
1
exp
R = 15k
0
R = 3460
R = 15
0/80
t
3460 273 t
1
273
1
exp
R = 17k
50
R = 4170
R = 17
25/120
t
4170
273 t
1
323
1
exp
Содержание City Multi CMB-P1016NU-G
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Страница 112: ... 103 VI Refrigerant Circuit 1 Refrigerant Circuit Diagram 105 2 Principal Parts and Functions 109 ...
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Страница 117: ... 108 VI Refrigerant Circuit 3 CMB P104 and P108NU GB sub TH25 TH22 LEV3a CP Solenoid valves Block Check valves Block ...
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Страница 312: ... 303 X LED Monitor Display on the Heat Source Unit Board 1 How to Read the LED on the Service Monitor 305 ...
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