6. Installation Details
6.1 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)
6.2 Connecting the cables
The power cord connection should be
selected according to the following
specifications sheet.
Unit
AWG
Dual-zone(18K outdoor unit)
14
Tri-zone (27K/30K outdoor unit).
14
Quad-zone(36K outdoor unit)
12
For indoor unit and outdoor unit connection
line, 16AWG is ok for all.
6.3 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(lengt
h 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.
Indoor unit
Extension pipe diameter
(mm/inch)
Model
Pipe diameter
(mm/inch)
9K
Liquid
6.35(1/4)
Liquid
6.35(1/4)
Gas
9.52(3/8)
Gas
9.52(3/8)
12K 18K
Liquid
6.35(1/4)
Liquid
6.35(1/4)
Gas
12.7(1/2)
Gas
12.7(1/2)
Outdoor unit union diameter (mm/inch)
Indoor unit A/B/C/D
Liquid
6.35(1/4)
Gas
9.52(3/8)
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
between indoor and outdoor units must be leak
tested and evacuated to remove gas and
moisture from the system.
Gas leak check (Soap water method):
Apply soap water or a liquid neutral
detergent on the indoor unit connections or
outdoor unit connections by a soft brush to check
for leakage of the connecting points of the piping.
If bubbles come out, the pipes have leakage.
1. Air purging with vacuum pump
Summary of Contents for M2OC-18HFN1-M
Page 19: ...8 Wiring Diagrams 8 1 Wiring diagram of 1 drive 2 outdoor M2OC 18HFN1 M M2OD 18HFN1 M...
Page 20: ...PCB board of M2OC 18HFN1 M M2OD 18HFN1 M...
Page 21: ...IPM board of M2OC 18HFN1 M...
Page 22: ...IPM board of M2OD 18HFN1 M...
Page 23: ...8 2 Wiring diagram of 1 drive 3 outdoor M3OD 27HRDN1 M M3OC 30HRFN1 M...
Page 24: ...PCB board of M3OC 30HRFN1 M...
Page 25: ...IPM board of M3OC 30HRFN1 M...
Page 26: ...PCB board of M3OD 27HRDN1 M...
Page 27: ...IPM board of M3OD 27HRDN1 M...
Page 28: ...8 3 Wiring diagram of 1 drive 4 outdoor M4OC 36HRFN1 M...
Page 29: ...PCB board of M4OC 36HRFN1 M...
Page 30: ...IPM board of M4OC 36HRFN1 M...
Page 31: ...PFC board of M4OC 36HRFN1 M...
Page 66: ...IPM for dual tri zone IPM for qua zone P N for dual tri zone...
Page 67: ...P N for qua zone...
Page 68: ...bridge rectifier for dual tri zone bridge rectifier for qua zone...
Page 69: ...Remark Measure the DC voltage between and port The normal value should be 190V 250V...
Page 71: ...Two ports of the inductance Inductance...
Page 72: ......
Page 77: ......
Page 79: ......
Page 81: ......
Page 83: ......
Page 96: ...6 EXV check Disconnect the connectors...
Page 98: ...Red Blue Red Yellow...
Page 99: ...Brown Orange Brown White...
Page 114: ...Screws of front panel Screws of right rear panel Screws of top cover...
Page 128: ......
