Daikin VRV III REYQ8PY1, Service Manual

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Si37-701 Piping Diagrams
Appendix 367
1.2 Indoor Unit
FXCQ, FXFQ, FXKQ, FXSQ, FXMQ, FXHQ, FXAQ, FXLQ, FXNQ
DU220-602J
Heat exchanger
(4)
(1)
Gas piping connection port
Liquid piping connection port
(Flare connection)
Flare connection :
φ
15.9 or less
Attached piping : Above
φ
19.1
Fan
Electronic
expansion valve
Filter Filter
(2)
(3)
Code Name Code Main function
(1) Electronic expansion valve Y1E
Used for gas superheated degree control while in
cooling operation or subcooled degree control while
in heating operation.
(2)
Suction air temperature
thermistor
R1T Used for thermostat control.
(3) Liquid pipe R2T
Used for gas superheated degree control while in
cooling operation or subcooled degree control while
in heating operation.
(4) Gas pipe R3T
Used for gas superheated degree control while in
cooling operation.
(mm)
Capacity GAS Liquid
20 / 25 / 32 / 40 / 50M(A)
φ
12.7
φ
6.4
63 / 80 / 100 / 125M(A)
φ
15.9
φ
9.5
200M(A)
φ
19.1
φ
9.5
250M(A)
φ
22.2
φ
9.5