5 Installation
Installation and operation manual
14
5TMV1B
VRV IV-S system air conditioner
4P399985-1B – 2015.06
b
Additional refrigerant amount charged
c
Total refrigerant charge
2
Fix the label on the inside of the outdoor unit. There is a
dedicated place for it on the wiring diagram label.
5.7
Connecting the electrical wiring
5.7.1
Field wiring: Overview
Field wiring consists of power supply (always including earth) and
indoor-outdoor communication (= transmission) wiring.
Example:
a
b
d
c
b
g
g
f
f
f
h
e
e
e
a
h
h
h
h
h
c
a
Field power supply (with earth leakage protector)
b
Main switch
c
Earth connection
d
Outdoor unit
e
Indoor unit
f
User interface
g
Power supply wiring (sheathed cable) (230 V)
h
Transmission wiring (sheathed cable) (16 V)
Power supply 1~ 50 Hz
Earth wiring
5.7.2
Guidelines when knocking out knockout
holes
NOTICE
Precautions when making knockout holes:
▪ Avoid damaging the casing.
▪ After making the knockout holes, we recommend you
remove the burrs and paint the edges and areas
around the edges using repair paint to prevent rusting.
▪ When passing electrical wiring through the knockout
holes, wrap the wiring with protective tape to prevent
damage.
b
c
a
a
Knockout hole
b
Burr
c
Sealant etc.
5.7.3
Guidelines when connecting the electrical
wiring
Tightening torques
Wiring
Screw size
Tightening torque
(N•m)
Power supply wiring
(power
shielded ground)
M5
2.0~3.0
Wiring
Screw size
Tightening torque
(N•m)
Transmission wiring
M3.5
0.8~0.97
5.7.4
To connect the electrical wiring on the
outdoor unit
NOTICE
▪ Follow the wiring diagram (delivered with the unit,
located at the inside of the service cover).
▪ Make sure the electrical wiring does NOT obstruct
proper reattachment of the service cover.
1
Remove the service cover.
2
Connect the transmission wiring as follows:
F1 F2
F1 F2
F1 F2
F1 F2
F1 F2
F1 F2
a
b
X2M
TO OUT/D
TO IN/D
a
Use the conductor of sheathed wire (2 wire) (no polarity)
b
Terminal board (field supply)
WARNING
You must use shielded wire and connect the earth to the
transmission terminal (X2M).
TO IN/D UNIT
F1 F2 F1 F2
TO OUT/D UNIT
a
a
Earth
3
Connect the power supply as follows:
1~ 50 Hz
220-240 V
X1M
a
b
c
a
Earth leakage circuit breaker
b
Fuse
c
Power supply cable
4
Fix the cables (power supply and transmission wiring) with
cable ties.
