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Installation Manual
●After tightening the screws, pull the wire slightly to confirm whether it's firm or no
●Make sure that the electric connections are earthed properly to prevent electric shock.
●Make sure that all wiring connections are secure and the cover plates are reinstalled properly. Poor installation may cause fire
or electric shock.
7.3.5 Installation of Indoor Unit
●The piping can be output from right, right rear, left or left rear.
1.When routing the piping and wiring from the left or right side of indoor unit, cut off
the tailings from the chassis when necessary(As shown in Fig.3)
(1)Cut off tailing 1 when routing the wiring only;
(2)Cut off tailing 1 and tailing 2 when routing both the wiring and piping.
2.Take out the piping from body case; wrap the piping, power cords, drain hose with
the tape and then make them pass through the piping hole. (As shown in Fig.4)
3.Hang the mounting slots of the indoor unit on the upper hooks of the mounting plate
and check if it is firm enough. (As shown in Fig.5
4.The installation site should be 250cm or more above the floo .
7.3.6 Installation of Connection Pipe
1.Align the center of the pipe flare with the related valve
2.Screw in the flare nut by hand and then tighten th
nut with spanner and torque wrench by referring to the
following:
Hex nut diameter
Ф6
Ф 9.52
Ф 12
Ф 16
Ф 19
NOTE: Connect the connection pipe to indoor unit at first and then to outdoor unit. Handle pipin
bending with care. Do not damage the connection pipe. Ensure that the joint nut
is tightened firml , otherwise, it may cause leakage.
7.4 Install Outdoor Unit
7.4.1 Electric Wiring
1.Remove the handle on the right side plate of outdoor unit.
2.Take off wire cord anchorage. Connect and fix the power
connection cord and signal control wire(for cool and heat
type only) to the terminal board. Wiring should fit that of
indoor unit.
3.Fix the power connection cord and signal control wire
(for cool and heat type only) with wire clamps and then
connect the corresponding connector.
4.Confirm if the wire has been fixed proper .
5.Reinstall the handle.
Tightening torque(N·m)
30 ～ 40
15 ～ 20
45 ～ 55
60 ～ 65
70 ～ 75
Tailing 2
Tailing 1
Fig.3
Right
Right rear
Fixing hook
Indoor unit piping
Spanner
Handle
GWC12NC-K3NNA3E/O
N(1)
2
black
yellow-
(brown)
green
outdoor unit connection
External connection
Gas side pipe
electric wire
Liquid side piping
Gas side piping
Liquid side
insulation
Piping insulation
Finally wrap it
Water drainage pipe
with tape
Left
Left rear
Fig.4
Mounting
plate
Mounting
plate
Fig.5
Taper nut
Piping
Torque
wrench
GWH12NC-K3NNA3E/O
N(1) 2
4
5
violet
outdoor unit connection
yellow-
green
23
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