Piping Diagram: Outdoor Unit; Wiring Diagram: Outdoor Unit - Daikin VRV IV+ RXYTQ8U5/U7YF Installation And Operation Manual

20 Technical data
20.2

Piping diagram: Outdoor unit

Piping diagram: RXYTQ8
u
j
R4T
g
R5T R6T
h
o
(S1NPL)
(S1NPH)
R3T
HPS
(S1PH)
R21T
f
l
sv
s
t
r
a Compressor
(M1C)
b Compressor
(M2C)
c Heat exchanger
d Fan
e Fan motor (M1F,
M2F)
f Accumulator
g Expansion valve,
main (Y1E)
h Expansion valve,
subcool heat
exchanger (Y2E)
i Expansion valve,
storage vessel
(Y4E)
j Subcool heat
exchanger
k Oil separator
Piping diagram: RXYTQ10+12
u
R4T
j
g
R6T
R5T
h
o
(S1NPL)
(S1NPH)
R3T
HPS
(S1PH)
R21T
f
l
sv
s
t
r
a Compressor
(M1C)
Installation and operation manual
38
d
R1T
v
M e
M1F
R7T
c
k
m
a
R8T
INV
M1C
l Solenoid valve, oil
accumulator
(Y2S)
m Solenoid valve,
oil1 (Y3S)
n Solenoid valve,
oil2 (Y4S)
o 4‑way valve, main
(Y1S)
p 4‑way valve, sub
(Y5S)
q Electrical
component box
r Service port,
refrigerant charge
s Stop valve, liquid
t Stop valve, gas
u Expansion valve,
liquid cooling
(Y3E)
v Service port
R1T
d d
v
e e
M M
M1F M2F
R7T
c
k
m
a
R8T
INV
M1C
l Solenoid valve, oil
accumulator
(Y2S)
b Compressor
(M2C)
c Heat exchanger
d Fan
e Fan motor (M1F,
M2F)
f Accumulator
g Expansion valve,
main (Y1E)
h Expansion valve,
subcool heat
exchanger (Y2E)
i Expansion valve,
storage vessel
(Y4E)
j Subcool heat
exchanger
k Oil separator
Piping diagram: RXYTQ14+16
u
j
g
R6T
R5T
h
o
(S1NPL) (S1NPH)
R3T
HPS
(S1PH)
R21T
f
a
INV
M1C
l
sv
s
t
r
a Compressor
(M1C)
b Compressor
(M2C)
c Heat exchanger
d Fan
e Fan motor (M1F,
M2F)
f Accumulator
g Expansion valve,
main (Y1E)
h Expansion valve,
subcool heat
exchanger (Y2E)
i Expansion valve,
storage vessel
(Y4E)
j Subcool heat
exchanger
k Oil separator
20.3

Wiring diagram: Outdoor unit

Refer to the wiring diagram sticker on the unit. The abbreviations
used are listed below:
VRV IV+ heat pump for high ambient temperatures
m Solenoid valve,
oil1 (Y3S)
n Solenoid valve,
oil2 (Y4S)
o 4‑way valve, main
(Y1S)
p 4‑way valve, sub
(Y5S)
q Electrical
component box
r Service port,
refrigerant charge
s Stop valve, liquid
t Stop valve, gas
u Expansion valve,
liquid cooling
(Y3E)
v Service port
R1T
d d
v
e e
M M
R4T
M1F M2F
c
k k
HPS
(S2PH)
R22T
m n
b
R8T R9T
INV
M2C
l Solenoid valve, oil
accumulator
(Y2S)
m Solenoid valve,
oil1 (Y3S)
n Solenoid valve,
oil2 (Y4S)
o 4‑way valve, main
(Y1S)
p 4‑way valve, sub
(Y5S)
q Electrical
component box
r Service port,
refrigerant charge
s Stop valve, liquid
t Stop valve, gas
u Expansion valve,
liquid cooling
(Y3E)
v Service port
RXYTQ
4P546223-1C – 2021.11