Installation and operation manual
24
10T8Y1B
VRV-W IV System Air Conditioner
4P399208-1 – 2015.01
BLK ........................Black
BLU ........................Blue
BRN........................Brown
GRN .......................Green
GRY .......................Grey
ORG .......................Orange
PNK........................Pink
RED........................Red
WHT .......................White
YLW........................Yellow
14.3. System overview of field wiring
Field wiring consists of power supply (always including earth) and
indoor-outdoor communication (=transmission) wiring.
Examples:
A
Heat pump system
B
Heat recovery system
1
Field power supply
2
Main switch
3
Earth leak detector
4
Fuse
5
Cool/heat selector
6
Remote controller
7
Outdoor unit
8
BS unit
9
Indoor unit
Power supply wiring
Transmission wiring
14.4. Opening and closing the electrical component box
1
Electrical component box
2
Cover of electrical component box
3
Inspection cover
14.5. Requirements
A power circuit (see table below) must be provided for connection of
the unit. This circuit must be protected with the required safety
devices, i.e. a main switch, a slow blow fuse on each phase and an
earth leak detector.
INFORMATION
The wiring diagram on the outdoor unit is only for the
outdoor unit. For the indoor unit or optional electrical
components, refer to the wiring diagram of the indoor unit.
1
2
3
3
4
4
5
6
9
7
A
B
3
4
6
7
5
8
1
2
3
4
9
CAUTION
Do not apply excessive force when opening the electrical
component box cover. Excessive force can deform the
cover.
Minimum circuit
ampere
Recommended
fuses
10
18+20
26+28+30
12.6 A
25.3 A
37.9 A
20 A
32 A
50 A
Phase and frequency: 3N~ 50 Hz
Voltage: 380-415 V
Transmission line section: 0.75~1.25 mm
2
, maximum length is 1000 m.
When the total transmission wiring exceeds these limits, this may result in
communication errors.
NOTICE
Be sure to use a high-speed residual current circuit
breaker (300 mA).
NOTICE
Use insulated wire for the power cord.
Select the power supply cable in accordance with
relevant local and national regulations.
The wire size must comply with the applicable local
and national code.
CAUTION
Use a power wire pipe for the power wiring.
Be sure to connect the power wiring to the power
wiring terminal block and secure it as described in
"14.6.3 Power supply wiring and transmission wiring
in the unit" on page 26
.
Transmission wiring should be secured as described
in
"14.6.3 Power supply wiring and transmission
wiring in the unit" on page 26
Secure the wiring with the accessory clamps so that it
does not touch the piping.
Make sure the wiring and the electrical component
box cover do not stick up above the structure, and
close the cover firmly.
1
2
3
