Daikin VRV IV-S RXYSQ4T8VB Series - Piping Diagram: Outdoor Unit; Wiring Diagram: Outdoor Unit

20 Technical data
Installation and operation manual
37
RXYSQ4~6T8V/YB(*)
VRV IV-S system air conditioner
4P482275-1B – 2020.10
20.2 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
m
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
m Heat sink PCB (only for RXYSQ4~6_V)
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
20.3 Wiring diagram: Outdoor unit
The wiring diagram is delivered with the unit, located at the inside of
the service cover.
Notes for RXYSQ4~6_V:
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~BS5 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.
Notes for RXYSQ4~6_Y:
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 RXYSQ4~6_V:
A1P Printed circuit board (main)
A2P Printed circuit board (filter)
A3P Printed circuit board (cool/heat selector) (option)
BS* Push buttons (mode, set, return, test, reset) (A1P)
C1 Capacitor (A1P)
DS1 DIP switch (A1P)
F1U Fuse (T 56A / 250V) (A2P)
F3U, F4U Fuse (T 6.3A / 250V) (A2P)
F6U Fuse (T 5.0A / 250V) (A1P)
H*P LED (service monitor orange) (A1P)
HAP Running LED (service monitor green) (A1P)
HBP Frequency LED (service monitor green) (A1P)
K11M Magnetic contactor (A1P)
K*R Magnetic relay (A1P)
L*R Reactor (A1P)
M1C Motor (compressor)
M1F Motor (upper fan)
M2F Motor (lower fan)
PS Switching power supply (A1P)
Q1DI Earth leakage circuit breaker (field supply)
R* Resistor (A1P)
R1T Thermistor (air)
R2T Thermistor (discharge)
R3T Thermistor (suction 1)
R4T Thermistor (heat exchanger)
R5T Thermistor (suction 2)
R6T Thermistor (subcool heat exchanger)