13
5-3. Selecting the Refrigerant Line Material
• Refrigerant pipes
• Material: Phosphoric deoxidized seam-less pipe
• Capacity code of outdoor unit / indoor unit
• For each indoor unit, the capacity code is determined for every capacity rank.
• For each outdoor unit, the capacity code is determined for every capacity rank. The Max. number of the
connectable indoor units and the total capacity code value of the indoor units are also determined.
Against the capacity code of the outdoor unit, the total capacity codes of the connectable indoor units differ
according to the height difference between indoor units.
• When the height difference between indoor units is 15m or less: Up to 135% of capacity code of outdoor unit
• When the height difference between indoor units is 15m or more: Up to 105% of capacity code of outdoor unit
Table 1 Table 2
Indoor unit
capacity rank
007 type
009 type
012 type
015 type
018 type
024 type
027 type
030 type
036 type
048 type
056 type
072 type
096 type
Capacity code
Equivalent Equivalent
to HP to capacity
0.8 2.2
1 2.8
1.25 3.6
1.7 4.5
2 5.6
2.5 7.1
38
3.2 9
4 11.2
514
616
8 22.4
10 28
Outdoor unit
model name
MMY-MAP0501
∗
MMY-MAP0601
∗
MMY-MAP0801
∗
MMY-MAP1001
∗
MMY-MAP1201
∗
MMY-AP1401
∗
MMY-AP1601
∗
MMY-AP1801
∗
MMY-AP2001
∗
MMY-AP2201
∗
MMY-AP2211
∗
MMY-AP2401
∗
MMY-AP2411
∗
MMY-AP2601
∗
Capacity code
Equivalent Equivalent
to HP to capacity
514
616
8 22.4
10 28
12 33.5
14 38.4
16 45
18 50.4
20 56
22 61.5
24 68
26 73
No. of
indoor
units
8
10
13
16
20
23
27
30
33
37
40
43
Outdoor unit
model name
MMY-AP2801
∗
MMY-AP3001
∗
MMY-AP3201
∗
MMY-AP3211
∗
MMY-AP3401
∗
MMY-AP3411
∗
MMY-AP3601
∗
MMY-AP3611
∗
MMY-AP3801
∗
MMY-AP4001
∗
MMY-AP4201
∗
MMY-AP4401
∗
MMY-AP4601
∗
MMY-AP4801
∗
Capacity code
Equivalent Equivalent
to HP to capacity
28 78.5
30 84
32 90
34 96
36 101
38 106.5
40 112
42 118
44 123.5
46 130
48 135
Table 3
No.
Piping parts
Outdoor unit
↓
T-shape
branching joint
Name
Connecting pipe of
outdoor unit
Selection of pipe size
1) Connecting pipe outdoor unit
Remarks
Same to connecting
pipe size of outdoor unit
Model
MMY-MAP0501
∗
MMY-MAP0601
∗
MMY-MAP0801
∗
MMY-MAP1001
∗
MMY-MAP1201
∗
Gas side
Ø15.9
Ø19.1
Ø22.2
Ø22.2
Ø28.6
Liquid side
Ø9.5
Ø9.5
Ø12.7
Ø12.7
Ø12.7
2)Pipe size for connecting piping between outdoor units
Total capacity codes of outdoor
units at downstream side
Equivalent Equivalent
to capacity to HP
Below 38.4 Below 14
38.4 to below 61.5 14 to below 22
61.5 to below 73.0 22 to below 26
73.0 to below 96.0 26 to below 36
Above 101.0 Above 36
Gas
side
Ø28.6
Ø28.6
Ø34.9
Ø34.9
Ø41.3
Liquid
side
Ø12.7
Ø15.9
Ø15.9
Ø19.1
Ø22.2
Balance
pipe
Ø9.5
3)Size of main pipe
Gas side
Ø15.9
Ø19.1
Ø22.2
Ø28.6
Ø28.6
Ø34.9
Ø34.9
Ø41.3
Ø41.3
∗
Liquid side
Ø9.5
Ø9.5
Ø12.7
Ø12.7
Ø15.9
Ø15.9
Ø19.1
Ø22.2
Ø22.2
∗
* Max. equivalent length of main pipe is below 70m.
Main connecting
piping between of
outdoor units
Main pipe
Between T-shape
branching joints
T-shape joint of
header unit
↓
1st branching
section
Total capacity codes of all outdoor units
Equivalent Equivalent
to capacity to HP
Below 16.0 Below 6
16.0 to below 22.4 6 to below 8
22.4 to below 33.5 8 to below 12
33.5 to below 38.4 12 to below 14
38.4 to below 61.5 14 to below 22
61.5 to below 73.0 22 to below 26
73.0 to below 101.0 26 to below 36
101.0 to below 130.0 36 to below 46
Above 130.0 Above 46
Pipe size differs based
on total capacity code
value of outdoor units at
downstream side.
(See Table 2.)
Pipe size differs based
on capacity code of
outdoor unit.
(See Table 2.)
Balance pipe
No. of
indoor
units
47
48
48
48
48
48
48
48
48
48
48