9 Technical data
Installation and operation manual
24
5TMV1B
VRV IV-S system air conditioner
4P399985-1B – 2015.06
9.2
Piping diagram: Outdoor unit
R1T
a
b
c
e
f
c
h
i
g
d
R4T
M1F
R2T
R5T
R7T
R3T
R6T
S1NPL
S1PH
S1NPH
M1C
INV
Y1E
Y3E
Y1S
j
k
l
m
c
n
o
a
Stop valve (gas)
b
Stop valve (liquid)
c
Filter (3×)
d
Subcool heat exchanger
e
Heat sink PCB
f
Fusible plug
g
Pressure regulating valve
h
Heat exchanger
i
Service port (high pressure)
j
Muffler
k
Check valve
l
Compressor accumulator
m
Capillary tube
n
Service port (refrigerant charge)
o
Accumulator
M1C
Compressor
M1F
Fan motor
R1T
Thermistor (air)
R2T
Thermistor (discharge)
R3T
Thermistor (suction 1)
R4T
Thermistor (heat exchanger de-icer)
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 5:
1
This wiring diagram applies only to the outdoor unit.
2
Symbols (see below).
3
Refer to the installation manual for how to use the BS1~BS5
and DS1+DS2 switches.
4
When operating, do not short-circuit protective device S1PH.
5
Colours (see below).
6
Refer to the installation manual for connection wiring to
INDOOR-OUTDOOR transmission F1-F2.
7
When using the central control system, connect OUTDOOR-
OUTDOOR transmission F1-F2.
Symbols:
L
Live
N
Neutral
Field wiring
Terminal strip
Connector
Fixed connector
Movable connector
Protective earth (screw)
Noiseless earth
Terminal
Colours:
BLK
Black
BLU
Blue
BRN
Brown
GRN
Green