17
English
Installation Procedure
H/R
16Ton 12Ton
(D)
(E)
(F)
(C)
(A)
(B)
(3)
(2)
(1)
6Ton
Ex.) 34 Ton
Ton No.
Pipe size (O.D)
Liquid Gas High pressure Gas
mm inch mm inch mm inch
10 (1) 15.88 5/8 28.58 11/8 28.58 11/8
28 (2) 19.05 3/4 34.92 13/8 28.58 11/8
34 (3) 19.05 3/4 41.28 15/8 34.92 13/8
Size of the pipe connected to the outdoor unit (A) Branch joint (C~E)
Select the size of the main pipe according to the below table.
Outdoor unit
capacity
(MBH)
(Cooling)
Outdoor unit
capacity
(kW)
(Cooling)
*Maximum pipe length within 295ft (90m) *Maximum pipe length over 295ft (90m)
Liquid
Low pressure
gas
High pressure
gas
Liquid
Low pressure
gas
High pressure
gas
inch mm inch mm inch mm inch mm inch mm inch mm
AɇΧɇʀϩцߪߧ
AɇΧɇʀϩцߤߧ
Ø3/8 Ø9.52
Ø3/4 Ø19.05 Ø5/8 Ø15.88
Ø1/2 Ø12.70
Ø3/4 Ø19.05 Ø5/8 Ø15.88
85 < Capacity
߫߫
25 < Capacity
ߤ߫
Ø7/8 Ø22.22
Ø3/4 Ø19.05
Ø7/8 Ø22.22
Ø3/4 Ø19.05
99 < Capacity
ߣߤߢ
29 < Capacity
ߥߧ
Ø1/2 Ø12.70
Ø1 1/8 Ø28.58
Ø5/8 Ø15.88
Ø1 1/8 Ø28.58
120 < Capacity
ߣߦߢ
ߥߧAɇΧɇʀϩц
ߦߣ
Ø7/8 Ø22.22 Ø7/8 Ø22.22
140 < Capacity
ߣߨߢ
41 < Capacity
ߦߩ
160 < Capacity
ߣߪߣ
47 < Capacity
ߧߥ
Ø5/8 Ø15.88 Ø3/4 Ø19.05
181 < Capacity
ߤߤߤ
ߧߥAɇΧɇʀϩц
ߨߧ
Ø1 1/8 Ø28.58 Ø1 1/8 Ø28.58
222 < Capacity
ߤߦߢ
65 < Capacity
ߩߢ
Ø1 3/8 Ø34.92 Ø1 3/8 Ø34.92
240 < Capacity
ߥߥߨ
70 < Capacity
߫ߪ
Ø3/4 Ø19.05 Ø7/8 Ø22.22
ߥߥߨAɇΧɇʀϩц
ߦߨߩ
98 < Capacity
ߣߥߩ
Ø1 5/8 Ø41.28 Ø1 3/8 Ø34.92 Ø1 5/8 Ø41.28 Ø1 3/8 Ø34.92
467 < Capacity
ߧߪߥ
ߣߥߩAɇΧɇʀϩц
ߣߩߣ
*Maximum pipe length : The pipe length between an outdoor unit and the farthest indoor unit.
࢜ͱθ²ŵͱʒʪࡥͱцʀθʪɇϑʪϩ˵ʪϑіʪͱ˙ϩ˵ʪαЇʒΧΧʪÃ˙ΧΧʪʪ˝ϩ˵ʪуʀʪʪʒϑߤ߫ߧ˙ϩ࣑߫ߢ࣒
࢜ͱθϩ˵ʪʀɇϑʪϩ˵ɇϩϩ˵ʪʒɇʪϩʪθͱ˙ϩ˵ʪʒʪ˙ɇЇϩΧΧʪͱ˙ɇͱЇϩʒͱͱθЇϩʒͱʪϑͱϩɇϩʀ˵ϩ˵ɇϩͱ˙
the pipe installed on the site, a socket is provided by default together with the outdoor unit
Branch joint between outdoor units (C)
Select a branch joint according to the sum of the capacity of outdoor units connected to the
branch joint.
Classification
Outdoor unit capacity
Model name
MBH kW
Y-joint for liquid/low
pressure gas pipe (C)
AɇΧɇʀϩцߦߨߩ AɇΧɇʀϩцߣߥߩ MXJ-TA3419M
467 < Capacity 137 < Capacity MXJ-TA4122M
Y-joint for high
pressure gas pipe (C)
AɇΧɇʀϩцߦߨߩ AɇΧɇʀϩцߣߥߩ MXJ-TA3100M
467 < Capacity 137 < Capacity MXJ-TA3800M
First branch joint (D)
Select according to the sum of the capacity of the outdoor unit.
Classification
Outdoor unit capacity
Model name
MBH kW
Y-joint for liquid/low
pressure gas pipe (D)
AɇΧɇʀϩцߣߦߢ AɇΧɇʀϩцߦߣ MXJ-YA2512M
AɇΧɇʀϩцߣߨߢ AɇΧɇʀϩцߦߩ MXJ-YA2812M
AɇΧɇʀϩцߤߥ߫ AɇΧɇʀϩцߩߢ MXJ-YA2815M
AɇΧɇʀϩцߥߥߨ AɇΧɇʀϩц߫ߪ MXJ-YA3419M
AɇΧɇʀϩцߦߨߩ AɇΧɇʀϩцߣߥߩ MXJ-YA4119M
467 < Capacity 137 < Capacity MXJ-YA4422M
Y-joint for high
pressure gas pipe (D)
AɇΧɇʀϩцߪߧ AɇΧɇʀϩцߤߧ MXJ-YA1500M
AɇΧɇʀϩцߤߥ߫ AɇΧɇʀϩцߩߢ MXJ-YA2500M
AɇΧɇʀϩцߦߨߩ AɇΧɇʀϩцߣߥߩ MXJ-YA3100M
467 < Capacity 137 < Capacity MXJ-YA3800M
Branch joint (E)
Select a branch joint according to the sum of indoor unit capacity which will be connected
after the branch.
࢜²ͱиʪЭʪθࡥ˙ϩ˵ʪɵθɇʀ˵ͱϩϑ࣑k࣒ϑɵ˝˝ʪθϩ˵ɇϩ˵ʪ˙θϑϩɵθɇʀ˵ͱϩ࣑U࣒ࡥɇΧΧцϩ˵ʪɵθɇʀ˵
joint of the same size as the first branch joint (D).
Classification
Indoor unit capacity
Model name
MBH kW
Y-joint for liquid/low
pressure gas pipe (E)
Capacity < 55 Capacity < 16 MXJ-YA1509M
ߧߧAɇΧɇʀϩцߣߥߥ ߣߨAɇΧɇʀϩцߥ߫ MXJ-YA2512M
ߣߥߥAɇΧɇʀϩцߣߩߤ ߥ߫AɇΧɇʀϩцߧߢߦ MXJ-YA2812M
ߣߩߤAɇΧɇʀϩцߤߦߪ ߧߢߦAɇΧɇʀϩцߩߤߪ MXJ-YA2815M
ߤߦߪAɇΧɇʀϩцߥߦߦ ߩߤߪAɇΧɇʀϩцߣߢߢߪ MXJ-YA3419M
ߥߦߦAɇΧɇʀϩцߦߩߪ ߣߢߢߪAɇΧɇʀϩцߣߦߢ MXJ-YA4119M
478 < Capacity 140 < Capacity MXJ-YA4422M
Y-joint for high
pressure gas pipe (E)
Capacity < 79 Capacity < 23.2 MXJ-YA1500M
ߩ߫AɇΧɇʀϩцߤߦߪ ߤߥߤAɇΧɇʀϩцߩߤߪ MXJ-YA2500M
ߤߦߪAɇΧɇʀϩцߦߩߪ ߩߤߪAɇΧɇʀϩцߣߦߢ MXJ-YA3100M
478 < Capacity ߣߦߢAɇΧɇʀϩц MXJ-YA3800M
Size of the pipe between branch joints (B)
Select the pipe size according to the sum of indoor unit capacity which will be connected after the branch.
࢜²ͱиʪЭʪθࡥ˙ϩ˵ʪϑіʪͱ˙ϩ˵ʪΧΧʪɵʪϩиʪʪɵθɇʀ˵ͱϩϑ࣑9࣒ϑɵ˝˝ʪθϩ˵ɇϩ˵ʪϑіʪͱ˙ϩ˵ʪΧΧʪ
connected to the outdoor unit (A), apply the pipe size (A).
Indoor unit
capacity (kW)
Indoor unit
capacity (kW)
Branch pipe length within 148ft (45m) Branch pipe length between 148ft~295ft (45~90m)
Liquid Low pressure gas High pressure gas Liquid
Low pressure
gas
High pressure
gas
inch mm inch mm inch mm inch mm inch mm inch mm
Capacity < 19 Capacity < 5.7 Ø1/4 Ø6.35 Ø1/2 Ø12.70 Ø3/8 Ø9.52 Ø3/8 Ø9.52 Ø1/2 Ø12.70 Ø3/8 Ø9.52
ߣ߫AɇΧɇʀϩц
< 55
ߧߩAɇΧɇʀϩцߣߨ
Ø3/8 Ø9.52
Ø5/8 Ø15.88 Ø1/2 Ø12.70
Ø1/2 Ø12.70
Ø5/8 Ø15.88 Ø1/2 Ø12.70
ߧߧAɇΧɇʀϩц
< 79
ߣߨAɇΧɇʀϩц
ߤߥߤ
Ø3/4 Ø19.05 Ø5/8 Ø15.88 Ø3/4 Ø19.05 Ø5/8 Ø15.88
ߩ߫AɇΧɇʀϩц
< 115
ߤߥߤAɇΧɇʀϩц
ߥߥߨ
Ø7/8 Ø22.22
Ø3/4 Ø19.05
Ø7/8 Ø22.22
Ø3/4 Ø19.05
ߣߣߧAɇΧɇʀϩц
ߣߥߥ
ߥߥߨAɇΧɇʀϩц
ߥ߫
Ø1/2 Ø12.70
Ø1 1/8 Ø28.58
Ø5/8 Ø15.88
Ø1 1/8 Ø28.58
ߣߥߥAɇΧɇʀϩц
< 150
ߥ߫AɇΧɇʀϩцߦߦ
Ø7/8 Ø22.22 Ø7/8 Ø22.22
ߣߧߢAɇΧɇʀϩц
< 172
ߦߦAɇΧɇʀϩц
< 50.4
ߣߩߤAɇΧɇʀϩц
< 229
ߧߢߦAɇΧɇʀϩц
< 67.2
Ø5/8 Ø15.88
Ø1 1/8 Ø28.58
Ø3/4 Ø19.05
Ø1 1/8 Ø28.58
ߤߥߢAɇΧɇʀϩц
< 248
ߨߩߤAɇΧɇʀϩц
< 72.8
Ø1 3/8 Ø34.92 Ø1 3/8 Ø34.92
ߤߦߪAɇΧɇʀϩц
ߥߦߦ
ߩߤߪAɇΧɇʀϩц
< 100.8
Ø3/4 Ø19.05 Ø7/8 Ø22.22
ߥߦߦAɇΧɇʀϩц
ߥ߫ߤ
ߣߢߢߪAɇΧɇʀϩц
< 115
Ø1 5/8 Ø41.28 Ø1 3/8 Ø34.92 Ø1 5/8 Ø41.28 Ø1 3/8 Ø34.92
ߥ߫ߤAɇΧɇʀϩц
<592
ߣߣߧAɇΧɇʀϩц
ߣߩߥߨ
ߧ߫ߤAɇΧɇʀϩц
< 676
ߣߩߥߨAɇΧɇʀϩц
< 198
Ø7/8 Ø22.22
Ø1 3/4
note4)
Ø44.45
note4)
Ø1 5/8 Ø41.28 Ø1
note1)
Ø25.40
note1)
Ø1 3/4
note4)
Ø44.45
note4)
Ø1 5/8 Ø41.28
ߨߩߨAɇΧɇʀϩц
< 860
ߣ߫ߪAɇΧɇʀϩц
< 252
Ø2 1/8 Ø53.98 Ø2 1/8 Ø53.98
ߪߨߢAɇΧɇʀϩц ߤߧߤAɇΧɇʀϩц
Ø1
note1)
Ø25.40
note1)
Ø1 3/4
note4)
Ø44.45
note4)
Ø1 1/8 Ø28.58
Ø1 3/4
note4)
Ø44.45
note4)
Note1) If Ø1”” (25.40mm) pipe is not available on site, use Ø1 1/8”” (28.58mm) pipe.
Note2) If Ø1 1/4”” (31.75mm) pipe is not available on site, use Ø1 3/8”” (34.92mm) pipe.
Note3) If Ø1 1/2”” (38.10mm) pipe is not available on site, use Ø1 5/8”” (41.28mm) pipe.
Note4) If Ø1 3/4”” (44.45mm) pipe is not available on site, use Ø2 1/8”” (53.98mm) pipe.
Size of the pipe between the branch joint and the indoor unit (F)
Select according to the capacity of the indoor unit.
Indoor unit capacity Liquid Gas
MBH kW inch mm inch mm
AɇΧɇʀϩцߤߢ AɇΧɇʀϩцߨ Ø1/4 Ø6.35 Ø1/2 Ø12.7
ߤߢAɇΧɇʀϩцߧߦ ߨAɇΧɇʀϩцߣߨ Ø3/8 Ø9.52 Ø5/8 Ø15.88
ߧߦAɇΧɇʀϩцߩߪ ߣߨAɇΧɇʀϩцߤߥ Ø3/8 Ø9.52 Ø3/4 Ø19.05
78 < Capacity ߤߥAɇΧɇʀϩц Ø3/8 Ø9.52 Ø7/8 Ø22.22
࢜Ã˙ϩ˵ʪʀθϩʪθɇ˙ͱθϑʪʪʀϩ˝ϩ˵ʪɵθɇʀ˵ϩ˵ʪͱЇϩʒͱͱθϑϩɇɇϩͱɇЇɇɇʒϩ˵ʪɵθɇʀ˵
installation manual are different, please select the branch in accordance with the outdoor
installation manual.
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