7. Installation Details
7.1 Wrench torque sheet for installation
Outside diameter
Torque
Additional tightening torque
mm
inch
N.cm
N.cm
Ф6.35
1/4
1500(153kgf.cm)
1600(163kgf.cm)
Ф9.52
3/8
2500(255kgf.cm)
2600(265kgf.cm)
Ф12.7
1/2
3500(357kgf.cm)
3600(367kgf.cm)
7.2 Connecting the cables
The power cord of connect should be selected according to the following specifications sheet.
For power line:
Unit
AWG
Dual-zone(18K outdoor unit)
14
Tri-zone (27K outdoor unit).
14
Quad-zone(36K outdoor unit)
12
For indoor unit and outdoor unit connection line, 16AWG is ok for all.
7.3 Pipe length and the elevation
Maximum piping length and height difference
1 drive 2
1 drive 3
1 drive 4
Max. length for all rooms (m)
30(98ft)
45(150ft)
60(200ft)
Max. length for one IU (m)
20(65.6ft)
25(82ft)
30(98ft)
Max. height difference between IU
and OU (m)
OU higher than IU
10(33ft)
10(33ft)
10(33ft)
OU lower than IU
15(49.2ft)
15(49.2ft)
15(49.2ft)
Max. height difference between IUs (m)
10(33ft)
10(33ft)
10(33ft)
Additional refrigerant charge
1 drive 2
1 drive 3
1 drive 4
Chargeless pipe length (m)
15(49.2ft)
22.5(73.8ft)
30(98.4ft)
Additional refrigerant
charge
g
15 x (length for all rooms -
15)
15 x (length for all rooms –
22.5)
15 x (length for all rooms -
30)
oz
(.0.161 x(length for all
rooms – 49.2))
(.0.161 x(length for all
rooms – 73.8))
(.0.161x(length for all rooms
– 98.4))
Caution:
●
Refrigerant pipe diameter is different according to indoor unit to be connected. When using the
extension pipe, refer to the tables below.
●
When refrigerant pipe diameter is different from that of outdoor unit union (for 18K indoor unit),
additional transfer connector needs to be used on outdoor unit union.
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