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9
/4
CONTROL SYSTEM
9.1.3.
RAS-8/10FXG
Purpose
Control Subject
Cooling Operation
Heating Operation
Fan Revolution of Outdoor Unit
For Controlling Discharge Pressure: Pd
(Main Control for Pd)
For Controlling Pressure based on Outdoor air
Temperature
Opening Degree of Exp. V for
Liquid Bypass: MVB
For Controlling Temperature of Discharge Super-
Heat: Td SH
Closed
Opening Degree of Exp. V of
Outdoor Unit: MV1, MV2
For Controlling Pressure: Pd (Sub Control for Pd)
For Controlling Temperature of Discharge Super-
Heat: Td SH
Opening Degree of Exp. V of
Indoor Unit: MV
1
For Controlling Temperature Difference between
air Inlet and air Outlet of Indoor Unit
2
For Controlling Temperature Difference between
Gas Pipe and Liquid Pipe of Indoor Unit Heat
Exchanger
1
For Controlling Temperature Difference between
air Inlet and air Outlet of Indoor Unit
2
For Balancing Temperature Differences between
Gas Pipe and Liquid Pipe of each Indoor Unit
Inverter Frequency of
Compressor
For Controlling Pressure of Refrigerant Suction: PS
For Controlling Pressure of Refrigerant discharge:
Pd
Exp. V: Micro-Computer Control Expansion Valve
Figure below shows the outline of the control system.
Symbol
Symbol
Name
MC
Motor (for Compressor)
CMC
Magnetic Contactor
MIF
Motor (for Indoor Fan)
RVR
4-Way Valve
MOF
Motor (for Outdoor Fan)
SVa,b, c
Solenoid Valve (for Gas Bypass)
MS
Motor (for Auto-Louver)
PSH
Pressure Switch
MV1,2,B
Electronic Expansion Valve
CT1,2
Current Transformer
THR
Fin Thermostat
SVS1,2
Solenoid Valve
EHW
Electric Heater
SVD1,2
Solenoid Valve (DC)
Indoor Unit
To Transmission Circuit of the
next CH Unit or Outdoor Unit
(H-Link)
Thermistor for Inlet Air
Thermistor of Discharge Air
Thermistor of Gas Pipe
Thermistor of Liquid Pipe
Discharge Gas Pressure Sensor
Thermistor of Atmospheric Air
Discharge Gas Thermistor
Thermistor for Heating Evaporation Temperature
Suction Gas Pressure Sensor
A+D
Conversion
Circuit
Remote Control Switch
Remote
Control
MCU
Outdoor Unit
MCU
Transm
iss
ion
circu
it
Inverter
Control MCU
Protection
Circuit
Inverter Power
Section
Electrical Control
Expansion Valve
Drive Circuit
Relay Drive
Circuit
Relay
Drive
Circuit
Fan
Control
Electrical Control
Expansion Valve Drive
Circuit
Relay Drive
Circuit
CH Unit
MCU
Outdoor Unit
380/415V Power
Source
Indoor Unit
MCU
A+D Conversion
Circuit
Transm
iss
ion
circu
it
Transm
iss
ion
circu
it
Transm
iss
ion
circu
it
Transm
iss
ion
circu
it
Protection
Circuit
To Transmission Circuit to the
next Unit of the same CH-Unit
Wireless Remote
Control Switch
Remote
Control
MCU
Transmission
circuit
Wireless Transmission
Circuit
Multiple Signals
Single Signals
Operation Signals
Summary of Contents for FSG Series
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Page 4: ......
Page 13: ...3 57 7 1 7 ...
Page 14: ......
Page 110: ......
Page 116: ......
Page 146: ......
Page 160: ...9 14 CONTROL SYSTEM n Cooling Operation FSG FSG1 cont ...
Page 162: ...9 16 CONTROL SYSTEM n Cooling mainly Cooling Operation FXG FXG1 cont ...
Page 163: ...CONTROL SYSTEM 9 17 9 6 3 DRY OPERATION FSG FSG1 I U Indoor Unit O U Outdoor Unit ...
Page 164: ...9 18 CONTROL SYSTEM n Dry Operation FSG FSG1 cont ...
Page 165: ...CONTROL SYSTEM 9 19 9 6 4 DRY OPERATION FXG FXG1 I U Indoor Unit O U Outdoor Unit ...
Page 166: ...9 20 CONTROL SYSTEM n Dry Operation FXG FXG1 cont ...
Page 167: ...CONTROL SYSTEM 9 21 9 6 5 HEATING OPERATION FSG FSG1 I U Indoor Unit O U Outdoor Unit ...
Page 168: ...9 22 CONTROL SYSTEM n Heating Operation FSG FSG1 cont ...
Page 170: ...9 24 CONTROL SYSTEM n Heating mainly Heating Operation FXG FXG1 cont ...
Page 171: ...CONTROL SYSTEM 9 25 n Defrosting Operation Control ...
Page 173: ...CONTROL SYSTEM 9 27 9 7 2 GAS BYPASS CONTROL 9 7 3 OVER HEATING PROTECTION CONTROL ...
Page 176: ...9 30 CONTROL SYSTEM 9 7 6 CONTROL FOR AUTO COOL HEAT OPERATION ...
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