Model
Name
MXJ-TA3819M
MXJ-TA4422M
Liquid side
x 2 EA
1
x 1 EA
4
x 2 EA
5
Gas side
x 1 EA
3
x 1 EA
2
x 1 EA
6
INSTALLATION MANUAL
Please read ‘Safety Precautions’ described in the installation manual of the air conditioner.
• Check the following parts in the package.
• For further information of the piping material and size of the refrigerant pipes, refer to the installation
manual of the air conditioner.
DB68-03340A(2)
Branch joints
• Condensate may occur on the heat insulation surface according to the atmosphere inside of the ceiling.
• If the inside of the ceiling has high temperature or humidity rate is more than 80%, please add proper
insulation to prevent water drops.
• The stopper area of the pipe or socket should be spread with a welding material. EX)
Requirement
Y-joint
Reducer
Model
Name
MXJ-YA1509M
MXJ-YA2512M
MXJ-YA2812M
MXJ-YA2815M
MXJ-YA3419M
MXJ-YA4119M
MXJ-YA4422M
Liquid side
Gas side
x 2 EA
1
x 2 EA
1
x 2 EA
2
x 2 EA
1
x 2 EA
2
x 1 EA
7
x 1 EA
3
x 2 EA
8
x 2 EA
3
x 1 EA
7
x 1 EA
3
x 2 EA
2
x 2 EA
11
x 2 EA
11
x 2 EA
2
x 1 EA
9
x 1 EA
12
x 1 EA
5
x 1 EA
3
x 1 EA
12
x 1 EA
10
x 1 EA
9
x 1 EA
4
x 1 EA
6
x 1 EA
5
x 1 EA
3
x 2 EA
3
x 1 EA
1
Model name
Total indoor unit’s capacities
MXJ-YA1509M
15.0 kW (51 MBH) and below
MXJ-YA2512M
Over 15.0~40.0 kW (51~136 MBH) and below
MXJ-YA2812M
Over 40.0~45.0 kW (136~154 MBH) and below
MXJ-YA2815M
Over 45.0~70.3 kW (154~240 MBH) and below
MXJ-YA3419M
Over 70.3~98.4 kW (240~336 MBH) and below
MXJ-YA4119M
Over 98.4~135.2 kW (336~461 MBH) and below
MXJ-YA4422M
Over 135.2 kW (461 MBH)
Y-joint for
HR
(High pressure gas)
Reducer
Model
MXJ-YA1500M
MXJ-YA2500M
MXJ-YA3100M
MXJ-YA3800M
x 1 EA
4
x 1 EA
3
x 1 EA
2
x 2 EA
1
x 2 EA
3
Model name
Total indoor unit’s capacities
MXJ-YA1500M
22.4 kW (76 MBH) and below
MXJ-YA2500M
Over 22.4~70.3 kW
(76~240 MBH) and below
MXJ-YA3100M
Over 70.3~ 135.2 kW
(240~461 MBH) and below
MXJ-YA3800M
Over 135.2 kW (461 MBH)
Header joint
Model
Name
MXJ-HA2512M
MXJ-HA3115M
MXJ-HA3819M
Liquid side
Gas side
x 4 EA
1
x 1 EA
a
7
x 1 EA
2
x 1 EA
b
7
x 8 EA
1
x 1 EA
4
x 1 EA
c
7
x 8 EA
1
x 4 EA
3
x 1 EA
5
x 8 EA
3
x 1 EA
6
x 8 EA
3
Reducer
Model name
Total indoor unit’s capacities
The maximum quantity
of connection
MXJ-HA2512M
45.0 kW(154 MBH) and below
4
MXJ-HA3115M
70.3 kW(240 MBH) and below
8
MXJ-HA3819M
Over 70.3 kW (240 MBH)
8
Outdoor joint for
HR
(High pressure gas)
Model
MXJ-TA3100M
MXJ-TA3800M
x 1 EA
3
x 1 EA
1
Reducer
1
2
3
4
Model name
Total outdoor unit’s capacities
MXJ-TA3100M
Below 135.2 kW(48HP, 461.3MBH)
MXJ-TA3800M
Above 140.2 kW(50HP, 478.4 MBH)
Outdoor joint
Model name
Total outdoor unit’s capacities
MXJ-TA3819M
Below 135.2 kW(48HP, 461.3 MBH)
MXJ-TA4422M
Above 140.2 kW(50HP, 478.4 MBH)
Reducer
1
2
3
4
5
6
282
364
172
172
255
282
364
172
172
255
255
282
282
419
149
173
194
241
284
85
85
85
95
95
40
40 40 40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
60
60
ID ø16.1
ID ø16.1
40
265
305
ID ø16.1
90
425
425
445
445
60
40
365
407
472
438
244
475
62
99
267
199
ID ø9.7
ID ø12.9
ID ø16.1
ID ø9.7
ID ø9.7
ID ø12.9
ID ø19.2
ID ø19.2
ID ø22.4 ID ø25.6
ID ø25.6
ID ø25.6
ID ø31.9
ID ø31.9
ID ø31.9
ID ø31.9
ID ø28.7
ID ø25.6
ID ø25.6
ID ø28.7
ID ø28.7
ID ø41.4
ID ø41.4
ID ø38.3
110
ID ø41.4
ID ø44.6 ID ø54.1
ID ø38.3
ID ø38.3
ID ø35.1
110
ID ø35.1
ID ø35.1
ID ø16.1
ID ø19.2
ID ø19.2
ID ø22.4
ID ø22.4
ID ø22.4
ID ø35.1
ID ø28.8
ID ø41.4
ID ø35.1
ID ø44.6
ID ø35.1
ID ø35.1
1
2
3
4
55
90
20
ID ø16.1
ID ø19.2
OD ø22.2
60
25
ID ø28.7
OD ø25.4
145
120
85
50
ID ø28.7
ID ø22.4
ID ø19.2
OD ø34.9
145
120
85
50
ID ø22.4
ID ø19.2
ID ø16.1
OD ø28.58
ID ø28.7
ID ø35.1
ID ø22.4
ID ø25.6
ID ø16.1
80
80
80
110
ID ø16.1
ID ø12.9
ID ø28.7
ID ø31.9
77.7
ID ø16.9
ID ø9.7
ID ø16.1
ID ø19.2
7
a
b
c
50
50
55
OD ø12.7
OD ø15.88
OD ø19.05
1
2
3
4
5
6
60
60
60
100
210
140
90
55
20
160
125
90
55
20
50
15
15
15
15
OD ø9.52
OD ø12.7
OD ø15.88
OD ø15.88
OD ø28.58
OD ø28.58
ID ø6.5
ID ø9.7
ID ø9.7
ID ø12.9
ID ø12.9
ID ø25.6
ID ø25.6
ID ø22.4
ID ø22.4
ID ø19.2
ID ø16.1
ID ø16.1
ID ø12.9
ID ø28.7
ID ø35.1
ID ø31.9
ID ø38.3
ID ø19.2
ID ø22.4
ID ø9.7
ID ø9.7
55.6
57.2
58.8
80.9
84.0
1
3
4
5
8
9
10
11
12
6
7
105
70
(5)
30
ID ø54.1
ID ø44.6
OD ø41.28
40
75
110
140
ID ø31.9
ID ø28.7
ID ø25.6
OD ø38.1
60
25
OD ø25.4
ID ø28.7
85
120
140
OD ø12.7
ID ø9.7
ID ø6.5
130
90
55
20
OD ø34.9
ID ø31.9
ID ø28.7
ID ø25.6
2
45
80
115
150
170
OD ø19.05
ID ø16.1
ID ø12.9
ID ø9.7
ID ø6.5
165
145
110
75
40
OD ø25.4
ID ø22.4
ID ø19.2
ID ø16.1
ID ø12.9
45
80
115
140
OD ø41.28
ID ø38.3
ID ø31.9
ID ø28.7
210
160
125
90
55
20
OD ø28.58
ID ø25.6
ID ø22.4
ID ø19.2
ID ø16.1
ID ø12.9
60
20
ID ø41.4
OD ø38.1
60
20
OD ø19.05
ID ø22.4
20
55
90
125
170
OD ø31.75
ID ø28.7
ID ø25.6
ID ø22.4
ID ø16.1
ID ø31.9
ID ø38.3
ID ø12.9
ID ø12.9
ID ø19.2
ID ø19.2
ID ø19.2
ID ø19.2
ID ø22.4 ID ø25.6
ID ø25.6
ID ø25.6
80
ID ø16.1
ID ø16.1
ID ø16.1
ID ø12.9
ID ø12.9
ID ø12.9
ID ø19.2
ID ø19.2
ID ø12.9
ID ø12.9
ID ø19.2
ID ø19.2
ID ø19.2
ID ø19.2
ID ø19.2
ID ø19.2
80
80
80
80
80
80
80
80
80
80
80
127
127
147
147
147
147
147
147
127
127
195
195
195
387
195
387
127
147
127
147
x 1 EA
3
x 2 EA
4
x 1 EA
2
282
364
172
20
50
85
120
145
105
60
20
85
50
40
35
35
70
70
55
75
110
145
165
95
145
172
479
422
423
20
45
407
327
220
125
160
90
55
20
80
115
140
55
90
125
180
264
266
ID ø28.8
ID ø28.8
470
334
240
ID ø28.8
ID ø28.8
ID ø25.6
ID ø22.4
ID ø19.2
ID ø25.6
ID ø22.4
ID ø19.2
147
147
ID ø16.1
ID ø19.2
ID ø25.6
OD ø19.05
OD ø25.4
OD ø41.3
OD ø41.3
OD ø34.9
OD ø34.9
OD ø19.05
ID ø31.9
ID ø28.7
ID ø22.4
ID ø28.7
ID ø22.4
ID ø19.2
ID ø35.1
ID ø35.1
ID ø22.4
ID ø19.2
ID ø16.1
ID ø12.9
ID ø16.1
ID ø12.9
ID ø9.7
ID ø25.6
ID ø41.4
ID ø22.4
ID ø25.6
ID ø35.1
ID ø28.8
ID ø41.4
OD ø34.9
OD ø41.28
OD ø28.6
ID ø28.7
ID ø38.3
ID ø31.9
ID ø28.7
ID ø28.7
ID ø22.4
ID ø25.6
ID ø19.2
ID ø16.1
59
ID ø22.4
ID ø19.2
ID ø16.1
ID ø35.1
ID ø44.6
ID ø34.9
ID ø41.4
173
173
ID ø38.3
ID ø41.4
ID ø54.1
ID ø41.4
ID ø19.2
ID ø35.1
262
272
ID ø19.2
ID ø19.2
80
80
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