9 Technical data
Installation and operation manual
32
RXYSQ8~12TMY1B
VRV IV-S system air conditioner
4P400263-1F – 2017.02
RXYSQ10+12
R5T
R21T
R8T
R4T R7T
S1NPL
S1NPH
S1PH
INV M1C
Y2S
Y1S
Y1E
M1F M2F
Y2E
R3T
R6T
R1T
a
l
m k
b
d
e
c
g
f
h
i
c
j
k
c
c
c
c
a Stop valve (gas)
b Stop valve (liquid)
c Filter (6×)
d Subcool heat exchanger
e Heat sink PCB
f Pressure regulating valve
g Heat exchanger
h Service port (high pressure)
i Check valve
j Oil separator
k Capillary tube (2×)
l Accumulator
m Service port (refrigerant charge)
M1C Compressor
M1F-M2F Fan motor
R1T Thermistor (air)
R21T Thermistor (discharge)
R3T Thermistor (suction)
R4T Thermistor (heat exchanger liquid pipe)
R5T Thermistor (liquid pipe)
R6T Thermistor (subcool heat exchanger)
R7T Thermistor (heat exchanger de-icer)
R8T Thermistor (M1C body)
S1NPH High pressure sensor
S1NPL Low pressure sensor
S1PH High pressure switch
Y1E Electronic expansion valve (main)
Y2E Electronic expansion valve (subcool heat exchanger)
Y1S Solenoid valve (4‑way valve)
Y2S Solenoid valve
Heating
Cooling
9.3 Wiring diagram: Outdoor unit
The wiring diagram is delivered with the unit, located at the inside of
the service cover.
Notes for RXYSQ8:
1 This wiring diagram applies only to the outdoor unit.
2 Symbols (see below).
3 Symbols (see below).
4 Refer to the installation manual for connection wiring to
INDOOR-OUTDOOR transmission F1-F2 and OUTDOOR-
OUTDOOR transmission F1-F2.
5 Refer to the installation manual for how to use the BS1~BS5
and DS1 switches.
6 When operating, do not short-circuit protective device S1PH.
7 Colours (see below).
Notes for RXYSQ10+12:
1 This wiring diagram applies only to the outdoor unit.
2 Symbols (see below).
3 Refer to the installation manual for connection wiring to
INDOOR-OUTDOOR transmission F1-F2 and OUTDOOR-
OUTDOOR transmission F1-F2.
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