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Electrical wiring
9 Perform air-tight test according to the indoor unit Installation
and Operation Manual.
10 Cover the flare connection with the insulation material (ac-
cessory) and protect it from water with tape. Do not run the
extension cable for the expansion valve kit through the inside
of the insulation material (accessory). Otherwise, a gap bet-
ween the refrigerant piping insulation (field-supplied) and the
insulation material (accessory) can be formed. It may cause
dew condensation. In addition, the temperature of the liquid
piping (between the expansion valve kit and the indoor unit) is
lower than that of standard piping. Therefore, additional insu-
lating is required depending on the usage environment.
4 ELECTRICAL WIRING
1 Electrical wiring connection of the expansion valve cable for
the indoor unit is shown in the figures below.
2 The connector CN33 (for the expansion valve cable) is con-
nected to the connector CN14 on the PCB1, and fixed on the
back side of the electrical box with tape. Connect CN33 and
the connector for extension cable (Attached to the expansion
valve kit). Then, cover the connection with a piping cover (Ac-
cessory) and fix them with cord clamps.
3 Fix the extension cable firmly with tape along the refrigerant
piping. When fixing the cable, make sure that the cable for
the expansion valve kit, the remote control switch cable and
transmission cable are located on the opposite side of the
refrigerant piping from power supply wiring.
5 TEST RUN
Refer to "Installation and Operation Manual" attached to the indoor unit for test run and for delivery.
19
PMML0268A rev.1 - 09/2015 - P5416576
C A U T I O N
Do not fasten flare nut hard. It may cause breakage with aged
deterioration and refrigerant leakage. Use a specified flare nut.
Regarding refrigerant piping work, vacuum pumping work and
additional refrigerant charge, refer to the indoor unit Installation
and Operation Manual.
Cord clamp
Connector of
extensión cable
Power supply wiring
Remote control switch cable, transmission ca-
ble and extension cable for expansion valve kit
(power supply wiring is located on the opposite
side of refrigerant piping)
Connector
(CN33)
Cord clamp
CN33
Piping cover
Taping the piping
Refrigerant piping
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