Mitsubishi Heavy Industries SRK100VNXWZRF Service Manual page 151

1.4 PIPING SYSTEM
Model 100
Models FDT71, 100, 125, 140
Indoor unit
Preset point of the protective devices
Parts name
Temperature sensor
(for protection over-
loading in heating)
Temperature sensor
(for frost prevention)
Temperature sensor
(for protection high
pressure in cooling)
Temperature sensor
(for detecting dis-
charge pipe tempera-
ture)
High pressure switch
(for protection)
Low pressure sensor
(for protection)
Service valve
Flare connecting
(Flare connecting)
Liquid line
Strainer
Outdoor unit
Check joint
Gas line
(φ15.88)
Service valve
Flare connecting
(Flare connecting)
Temperature sensor
(Heat exchanger)
High pressure
(Th2 )
switch
2
Temperature sensor
(63H1)
(Room air)
(Th1)
Heat exchanger
Humidity sensor
(Th3)
Temperature sensor
(Heat exchanger)
Check joint
( Th2 )
1
Flare connecting
Liquid line
Service valve
(φ9.52)
(Flare connecting)
Equipped
Mark
unit
Outdoor unit
Th o -A
Th 2 Indoor unit
Tho-R Outdoor unit
Tho-D Outdoor unit
63H1 Outdoor unit
Outdoor unit
PSL
-
Receiver
Electronic
expansion valve
Capillary tube
Muffler
Cooling cycle
4-way valve
Muffler
Check
valve
Temperature sensor
(Tho-S)
Muffler
Temperature sensor
(Tho-D)
(Discharge)
Compressor
(Suction)
Strainer Strainer
Electronic
expansion valve
(cooling)(EEVC)
100 model
Active 17˚C
Inactive 16˚C
Active 2.5˚C
Inactive 8˚C
Active 63˚C
Inactive 51˚C
Active 115˚C
Inactive 85˚C
Active 4.15MPa
Inactive 3.15MPa
Active 0.079MPa
Inactive 0.227MPa
150
-
(EEV)
'22 • PAC-SM-422
Heating cycle
Temperature sensor
(Tho-A)
Check joint
Heat exchanger
Low pressure sensor
(PSL)
Temperature sensor
(Tho-R1)
Accumulator
Temperature sensor
(Tho-R2)
Subcooling
coil
Strainer
Strainer
Electronic
expansion valve
(heating)(EEVH)
Receiver