Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 558

FDR-H
Models FDR408HES-A, 508HES-A
Indoor unit
Preset point of the protective devices
Parts name Mark
Thermistor
(for protection over-
loading in heating)
Th
Thermistor
(for frost prevention)
Thermistor
(for detecting dis- Tho-D
charge pipe temp.)
Thermistor
(for detecting heat Tho-R
exchange temp.)
High pressure switch
63H
(for controlling FM )
0
Parts name Mark
Thermistor
(for protection over-
loading in heating)
TH
Thermistor
(for frost prevention)
23DH
Defrost thermostat
23DH
High pressure switch
63H
(for controlling FMo)
556
Service valve
(Flare connecting)
Check joint
Strainer Strainer
Gas line
(ø19.05)
Check joint
Thermistor
(Th -A)
I
Heat exchanger
Thermistor
(Th -R)
I
Capillary tube
Liquid line
(ø9.52)
Strainer Strainer
Service valve
(Flare connecting)
Equipped
unit
R
Indoor unit
I-
Outdoor unit
Outdoor unit
Outdoor unit
2
Equipped
unit
R Indoor unit
I-
2
Outdoor unit
1
Outdoor unit
2
Cooling cycle
Heating cycle
High pressure switch
(For fan motor control)
4way valve
Heat
exchanger
Accumlator
Check joint
Defrost
Thermostat
Compressor
(23DH)
High Pressure
regulator valve
FDR208~508 (FDC208~508 type)
OFF 68˚C
ON 61˚C
OFF 2.5˚C
ON 10˚C
OFF 135˚C
ON 90˚C
OFF 70˚C
ON 60˚C
OFF 2.5MPa (25.5 Kgf/cm
ON 2.06MPa (21 kgf/cm
FDR308~508 (FDC306~506 type)
OFF 68˚C
ON 61˚C
OFF 2.5˚C
ON 10˚C
OFF 12˚C
ON -6˚C
OFF 2.5MPa (25.5 Kgf/cm
ON 1.86MPa (19 kgf/cm
Outdoor unit
Capillary tube
2
)
2 )
2 )
2
)