9 Technical data
Installation and operation manual
24
RXYSQ6T7Y1B9
VRV IV-S system air conditioner
4P397285-1B – 2016.03
(B2) Then it is not required to install a roof, but
seal the gap
between the upper and lower units to prevent discharged air from flowing back to the
suction side through the bottom of the unit.
9.2
Piping diagram: Outdoor unit
R7T
Y1E
R3T
R4T
R5T
R2T
S1NPL
S1PH
M1C
INV
S1NPH
Y1S
Y3E
R6T
R1T
b
a
g
h
k
c
j
l
i
c
d
c
e
f
M1F M2F
a
Stop valve (gas)
b
Stop valve (liquid)
c
Filter (3×)
d
Subcool heat exchanger
e
Pressure regulating valve
f
Heat exchanger
g
Service port (high pressure)
h
Check valve
i
Compressor accumulator
j
Capillary tube
k
Service port (refrigerant charge)
l
Accumulator
M1C
Compressor
M1F-M2F
Fan motor
R1T
Thermistor (air)
R2T
Thermistor (discharge)
R3T
Thermistor (suction 1)
R4T
Thermistor (heat exchanger)
R5T
Thermistor (suction 2)
R6T
Thermistor (subcool heat exchanger)
R7T
Thermistor (liquid pipe)
S1NPH
High pressure sensor
S1NPL
Low pressure sensor
S1PH
High pressure switch
Y1E
Electronic expansion valve (main)
Y3E
Electronic expansion valve (subcool heat exchanger)
Y1S
Solenoid valve (4‑way 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 RXYSQ6_Y1:
1
Symbols (see below).
2
For X37A refer to the installation manual of the option.
3
Refer to the installation or service manual on how to use
BS1~BS4 push buttons, and DS1‑1 and DS1‑2 DIP switches.
4
Do not operate the unit by short-circuiting protection device
S1PH.
5
Refer to the installation manual for indoor-outdoor
transmission F1-F2 wiring.
6
When using the central control system, connect outdoor-
outdoor transmission F1-F2.
Symbols:
X1M
Main terminal
Earth wiring
15
Wire number 15
Field wire
Field cable
**
/12.2
Connection ** continues on page 12 column 2
1
Several wiring possibilities
Option
Not mounted in switch box
Wiring depending on model
PCB
Legend for wiring diagram RXYSQ6_Y1:
A1P
Printed circuit board (main)
A2P
Printed circuit board (inverter)
BS*
Push buttons (mode, set, return, test, reset) (A1P)
C*
Capacitor (A2P)
DS1
DIP switch (A1P)
F1U, F2U
Fuse (T 31.5 A / 500 V) (A1P)
F1U
Fuse (T 5.0 A / 250 V) (A2P)
F3U, F4U,
F5U
Fuse (T 6.3 A / 250 V) (A1P)
H*P
LED (service monitor orange) (A1P)
HAP
Running LED (service monitor green) (A*P)
K1M
Magnetic contactor (A2P)
K*R
Magnetic relay (A*P)
L1R
Reactor
M1C
Motor (compressor)
M1F
Motor (upper fan)
M2F
Motor (lower fan)
PS
Switching power supply (A2P)
Q1DI
Earth leakage circuit breaker (field supply)
R*
Resistor (A2P)
R1T
Thermistor (air)
R2T
Thermistor (discharge)
R3T
Thermistor (suction 1)
R4T
Thermistor (heat exchanger)
R5T
Thermistor (suction 2)
R6T
Thermistor (subcool heat exchanger)
R7T
Thermistor (liquid pipe)
R10T
Thermistor (fin)
S1NPH
High pressure sensor
S1NPL
Low pressure sensor
S1PH
High pressure switch
S1S
Air control switch (option)
