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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
(accessory) 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 between 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,
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
connected 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 (Accessory) 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.
10
Connector
(CN33)
PMML0268A rev.4 - 02/2020 - P5416576
additional insulating is required depending on the usage
environment.
!
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.
Power supply wiring
Remote control switch cable, transmission
cable and extension cable for expansion valve
kit (power supply wiring is located on the
opposite side of refrigerant piping)
Cord clamp
Cord clamp
Connector of
CN33
extensión cable
Piping cover
Taping the piping
Refrigerant piping
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