Daikin VRVIII-S, Service Manual

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SiENBE34-703 Piping Diagrams
Appendix 199
1.2 Indoor Unit
FXCQ, FXFQ, FXZQ, FXKQ, FXSQ, FXMQ, FXHQ, FXAQ, FXLQ, FXNQ
DU220-602J
(4)
(1)
(2)
(3)
Heat exchanger
Gas piping connection port
Flare connection : ø15.9 or less
Attached piping : Above ø19.1
Fan
Liquid piping connection port
(Flare connection)
Electronic
expansion valve
Filter Filter
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