Specifications

Refrigerant Flow for Each Operation Mode SiUS39-602
36 Refirgerant Circuit
Oil Return or Defrost Operation
Indoor unit (Thermostat "ON")
Fan OFF
Indoor unit
To other indoor units
" ON "
Cooling
Heating Heating
Heat exchanger
Fan
Electronic
∗
expansion valve
Filter Filter
Indoor unit
Fan OFF
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
BS unit BS unit BS unit
∗
Electronic exp.
valve openning: Refer to page 41~43.
Capillary tube
Three way valve
Capillary tube
Solenoid valve
Check valve
Filter
Capillary tube
Three way valve
Capillary tube
Solenoid valve
Check valve
Filter
Capillary tube
Three way valve
Capillary tube
Solenoid valve
Check valve
Filter
Oil equalizer pipe to other outdoor units Liquid piping to other outdoor units Discharge gas piping to other outdoor units Suction gas piping to other outdoor units