Daikin VRV II RXYQ5MY1B Service Manual page 81

Refrigerant Flow for Each Operation Mode
Heating Oil Return & Defrost Operation
High temperature, high pressure gas
High temperature, high pressure liquid
Low temperature, low pressure
70
Fan OFF
" ON "
Heat exchanger
Fan
EXV : 512 pls
Filter Filter
Indoor unit
Thermostat "ON"
Pressure
regulating
valve
Electronic
expansion
valve
Check
valve
Solenoid
valve
Check
valve
Filter
High pressure
switch
Compressor
INV
Check
valve
Capillary
tube
Filter
Stop valve (With service port on on-site piping side ø7.9mm flare connection)
S Oil equalizing pipe to other outdoor units
S Liquid piping to other outdoor units
S
Gas piping to other outdoor units
Indoor unit operation
Fan OFF
" OFF "
Heat exchanger
Fan
EXV : 512 pls
Filter Filter
Indoor unit
Solenoid
valve
Filter
Heat
exchanger pipe
Filter
Filter
Four way
valve
High pressure
sensor
Check
Check
valve
valve
High pressure
switch
Solenoid
valve
Filter
Compressor
STD1
Filter
Filter Low pressure
sensor
Check valve
Solenoid
valve
Fan OFF " ON "
Heat exchanger
Fan
EXV : 512 pls
Filter Filter
Indoor unit
Thermostat "OFF"
Capillary
Check
tube
valve
Electronic
expansion valve
Filter
Fan
Heat exchanger
Pressure
regulating
valve
Check
valve
High pressure
switch
Compressor
STD2
Capillary
tube
Refirgerant Circuit
SiE39-404
4D044809