Daikin VRV - WII Service Manual page 65

Refrigerant Flow for Each Operation Mode
D: Heating and simultaneous cooling/heating operation mode (When the outdoor water cooled heat exchangers are used only as evaporator.)
To other indoor units
Bs unit Indoor unit
Fan ON
Heat exchanger
Capillary
tube
Fan
Three way
valve
Electronic
expansion valve
Capillary tube Check valve
Filter Solenoid valve
Filter
Indoor unit (Thermostat "ON")
Bs unit Indoor unit
Fan ON
Heat exchanger
Capillary
tube
Fan
Three way
valve
Electronic
expansion valve
Capillary tube Check valve
Solenoid valve
Filter
Filter
Indoor unit (Thermostat "OFF")
Bs unit Indoor unit
Fan ON
Heat exchanger
Capillary
tube
Fan
Three way
valve
Electronic
expansion valve
Capillary tube Check valve
Solenoid valve
Filter
Filter
Indoor unit (Thermostat "ON")
52
Outside unit 1
Heating
"ON"
E3 control
Filter
Cooling
"ON"
Indoor unit
operation
Filter
Heating
"ON"
Filter
Outside unit 2
E3 control
High temperature, high pressure gas
High temperature, high pressure liquid
Low temperature, low pressure liquid or gas
Outside unit 3
E3 control
Refrigerant Circuit
SiUS30-604