Indoor Unit - Daikin VRV RXYQ72-384XAYCA Service Manual

Refrigerant Circuit (Piping Diagrams)
1.2

Indoor Unit

No. in
piping Name
diagram
Electronic expansion valve
(1)
(2) Suction air thermistor
Liquid pipe thermistor
(3)
Gas pipe thermistor
(4)
(5) Discharge air thermistor
1. R1T is for remote controller thermistor or optional remote sensor.
 FXFQ-AA
(3)
(2)
(1)
 FXZQ-TA
(3)
(2)
(4)
(1)
37
Symbol
Except
FXMQ-PB
FXTQ-TA FXMQ-PB
FXTQ-TB
CXTQ-TA
Y1E Y1E
R1T R1T
R2T R2T
R3T R3T
— R4T
(4)
C: 4D140941
C: 4D110602
FXTQ-TA
FXTQ-TB
CXTQ-TA
Used for gas superheating degree control while in
Y1E cooling or subcooling degree control while in
heating.
R1T (1) Used for thermostat control.
Used for gas superheating degree control while in
R2T cooling or subcooling degree control while in
heating.
Used for gas superheating degree control while in
R3T
cooling.
— Used for discharge air temperature control.
 FXFQ-T, FXHQ-M
(3)
Indoor heat exchanger
(2)
Fan
Filter (1) Filter
 FXZQ-TB
(3)
(2)
(4)
(1)
SiUS342004EB
Function
Gas piping
connection port
(4)
Liquid piping
connection port
C: 4D024460P
C: 4D137354
Part 2 Refrigerant Circuit