SiUS30-604 Refrigerant Flow for Each Operation Mode
Refrigerant Circuit 43
3. Refrigerant Flow for Each Operation Mode
3.1 In Case of Heat Pump Connection
A. Cooling Operation
Indoor unit (Thermostat “OFF”)
Fan ON
Indoor unit
To other indoor units
“ON”
Cooling
oreration
Cooling
Heat exchanger
Fan
Filter Filter
Indoor unit
“OFF”
Heat exchanger
Fan
Electronic
expansion valve
Filter Filter
Indoor unit (Thermostat “ON”)
Fan ON
Indoor unit
“ ON”
Heat exchanger
Fan
Electronic
expansion valve
Filter Filter
High temperature, high pressure gas
High temperature, high pressure liquid
Low temperature, low pressure liquid or gas
Indoor unit
operation
Suction gas pipe (No pipe connection)
Discharge gas pipe
Liquid pipe
E3 control
ON-OFF control by
receiver pressurerising
control
(0 pls)
Electronic
expansion valve
(0 pls)
Outside unit 1
To other outside units
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