Service Manual

12
5. Wiring Diagram
(Pls refer the wiring diagram on the unit)
6 Installation Details
6.1 Wrench torque sheet for
installation
Outside diameter
Torque
Additional tightening
torque
6.35mm
1/4in
1500N.cm(153kgf.cm)
1600N.cm(163kgf.cm)
9.52mm
3/8in
2500N.cm(255kgf.cm)
2600N.cm(265kgf.cm)
12.7mm
1/2in
3500N.cm(357kgf.cm)
3600N.cm(367kgf.cm)
15.9mm
5/8in
4500N.cm(459kgf.cm)
4700N.cm(479kgf.cm)
19mm
3/4in
6500N.cm(663kgf.cm)
6700N.cm(683kgf.cm)
6.2 Connecting the cables
The power cord should be selected according
to the following specifications sheet.
Appliance Amps
AWG Wire Size
10
18
13
16
18
14
25
12
30
10
The cable size and the current of the fuse or
switch are determined by the maximum
current indicated on the nameplate which
located on the side panel of the unit. Please
refer to the nameplate before selecting the
cable, fuse and switch.
6.3 Pipe length and the elevation
Models
Pipe size
Gas
Liquid
9K
3/8in
(9.52mm)
1/4in
(6.35mm)
12K,18K
1/2in
(12.7mm)
1/4in
(6.35mm)
24K,30K,36K
5/8in (15.9mm)
3/8in
(9.52mm)
Models
Standard length
Max.
Elevati
on
Max.
Length
A
Additional
refrigerant
9K,12K
7.5m
(24.6ft)
10m
(32.8ft)
25m
(82.0ft)
15g/m
(0.16oz/ft)
18K
7.5m
(24.6ft)
20m
(65.6ft)
30m
(98.4ft)
15g/m
(0.16oz/ft)
24K
7.5m
(24.6ft)
20m
(65.6ft)
30m
(98.4ft)
30g/m
(0.32oz/ft)
30K
7.5m
(24.6ft)
25m
(82.0ft)
50m
(164ft)
30g/m
(0.32oz/ft)
36K
7.5m
(24.6ft)
30m
(82.0ft)
65m
(213ft)
30g/m
(0.32oz/ft)
6.4 Installation for the first time
Air and moisture in the refrigerant system have
undesirable effects as below:
● Pressure in the system rises.
● Operating current rises.
● Cooling or heating efficiency drops.
● Moisture in the refrigerant circuit may
freeze and block capillary tubing.
● Water may lead to corrosion of parts in the
refrigerant system.
Therefore, the indoor units and the pipes