Daikin RXYQ5-48MAY1 Service Manual page 72

Si39-407
Cooling Oil Return Operation
"High temperature, high pressure gas"
"High temperature, high pressure liquid"
"Low temperature, low pressure"
Refirgerant Circuit
Fan ON
Fan OFF
" ON "
Heat exchanger
Fan
EV:Nomal
control
Filter Filter
Electronic expansion valve
Indoor unit
Thermostat "ON"
Heat
exchanger pipe
Gauge port
Stop valve(with service port on on-site piping side φ 7.9 flare connection)
Refrigerant Flow for Each Operation Mode
Indoor unit operation
" OFF " Fan OFF
Heat exchanger
Fan
EV:200pls
Filter Filter
Electronic expansion valve
Indoor unit
Filter
Solenoid
Fusible plug
valve
Filter
Filter
Solenoid
valve
Capillary
tube
4-way valve
Pressure regulating
valve
(check valve type)
Gauge port
Solenoid
valve
Filter
" ON "
Heat exchanger
Fan
EV:200pls
Filter Filter
Electronic expansion valve
Indoor unit
Thermostat "OFF"
Electronic
expansion valve
Filter
High pressure
sensor
High pressure
switch
Compressor
61