Daikin REYQ-XA, Service Manual

Page: 78 / 441

Refrigerant Circuit SiUS371901E
65 Refrigerant Circuit
1.2 Indoor Unit
∗
1. R1T is for remote controller thermistor or optional remote sensor.
No. in piping
diagram
Name
Symbol
Function
Except
FXMQ-PB,
FXTQ-TA,
CXTQ-TA
FXMQ-PB
FXTQ-TA,
CXTQ-TA
(1)
Electronic expansion
valve
Y1E Y1E Y1E
Used for gas superheating degree control while
in cooling or subcooling degree control while in
heating.
(2) Suction air thermistor R1T R1T R1T (
∗
1) Used for thermostat control.
(3) Liquid pipe thermistor R2T R2T R2T
Used for gas superheating degree control while
in cooling or subcooling degree control while in
heating.
(4) Gas pipe thermistor R3T R3T R3T
Used for gas superheating degree control while
in cooling.
(5) Discharge air thermistor — R4T — Used for discharge air temperature control.
„
FXFQ-T,FXHQ-M
„
FXZQ-TA
„
FXUQ-P, FXEQ-P, FXSQ-TA, FXMQ-M, FXAQ-P,
FXLQ-M, FXNQ-M
„
FXDQ-M
C: 4D024460P
(4)
(3)
Indoor heat exchanger
Fan
Filter Filter (1)
Gas piping
connection port
Liquid piping
connection port
(2)
(4)
(3)
(1)
(2)
C: 4D110602
Indoor heat exchanger
Fan
Filter Filter
(4)
(2)
(1)
(3)
Gas piping
connection port
Liquid piping
connection port
C: 4D034245R
Fan
Indoor heat exchanger
Filter Filter
Liquid piping connection port
Gas piping connection port
(3)
(4)
(2)
(1)
C: 4D043864N