5 Installation
Installation and operation manual
16
RXYTQ8~16T7YF
VRV IV system air conditioner
4P388987-1C – 2016.02
5.6.7
Error codes when charging refrigerant
If a malfunction occurs, close valve A immediately. Confirm the
malfunction code and take corresponding action,
"8.1 Solving
problems based on error codes" on page 22
.
5.6.8
Checks after charging refrigerant
▪ Are all stop valves open?
▪ Is the amount of refrigerant, that has been added, recorded on the
refrigerant charge label?
NOTICE
Make sure to open all stop valves after (pre-) charging the
refrigerant.
Operating with the stop valves closed will damage the
compressor.
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
d
d
c
b
g
g
h
h
c
f
f
f
h
e
e
e
a
h
h
h
h
h
i
a
Field power supply (with earth leakage protector)
b
Main switch
c
Earth connection
d
Outdoor unit
e
Indoor unit
f
User interface
g
Indoor power supply wiring (sheathed cable) (230 V)
h
Transmission wiring (sheathed cable) (16 V)
i
Outdoor power supply wiring (sheathed cable)
Power supply 3N~ 50/60 Hz
Power supply 1~ 50/60 Hz
Earth wiring
5.7.2
Guidelines when knocking out knockout
holes
▪ To punch a knockout hole, hit on it with a hammer.
▪ After knocking out the holes, we recommend removing any burrs
and paint the edges and areas around the holes using repair paint
to prevent rusting.
▪ When passing electrical wiring through the knockout holes.
prevent damage to the wires by wrapping the wiring with
protective tape, putting the wires through field supplied protective
wire conduits at that location, or install suitable field supplied wire
nipples or rubber bushings into the knockout holes.
a
b
c
d
a
Knockout hole
b
Burr
c
Remove burrs
d
If there are any possibilities that small animals enter the
system through the knockout holes, plug the holes with
packing materials (to be prepared on-site)
5.7.3
To route and fix the transmission wiring
Transmission wiring can be routed through the front side only. Fix it
to the upper mounting hole.
b
a
A
b a
c
c
c
d
c
d
c
8 HP
10~16 HP
A
A
a
Transmission wiring (possibility 1)
(a)
b
Transmission wiring (possibility 2)
(a)
. Fix to pipe insulation
with tie wraps.
c
Tie wrap. Fix to factory-mounted low voltage wiring.
d
Tie wrap.
(a)
Knockout hole has to be removed. Close the hole to avoid
small animals or dirt from entering.
L1
L2
L3
N
c
d
c
d
d
d
c
c
a
b
a
b
8 HP
10~16 HP
Fix to the indicated plastic brackets using field supplied clamping
material.
a
Wiring between the units (indoor-outdoor) (F1/F2 left)
b
Internal transmission wiring (Q1/Q2)
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