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Installation Manual
EN-17
EN-18
Selection of pipe materials and size
Selection of pipe material
Material: Phosphorus deoxidation seam-less pipe
Capacity code of indoor and outdoor units
• For the indoor unit, the capacity code is decided at each capacity rank.
• The capacity codes of the outdoor units are decided at each capacity rank.
The maximum No. of connectable indoor unit and the total value of capacity codes of the indoor units are also decided.
Minimum wall thickness for R410A application
* If the pipe size is Ø19.05, use a suitable material.
Table 1
Table 2
Soft
Half Hard or Hard
OD (Inch)
OD (mm)
Minimum wall thickness (mm)
OK
OK
1/4”
6.35
0.80
OK
OK
3/8”
9.52
0.80
OK
OK
1/2”
12.70
0.80
OK
OK
5/8”
15.88
1.00
NG *
OK
3/4”
19.05
1.00
Indoor unit
capacity type
Capacity code
Indoor unit
capacity type
Capacity code
Equivalent to HP
Equivalent to
capacity
Equivalent to HP
Equivalent to
capacity
018 type
2.0
5.6
007 type
0.8
2.2
020 type
2.25
6.3
008 type
0.9
2.5
024 type
2.5
7.1
009 type
1.0
2.8
027 type
3.0
8.0
010 type
1.1
3.2
012 type
1.25
3.6
014 type
1.5
4.0
015 type
1.7
4.5
017 type
1.85
5.0
Outdoor unit capacity
type
Capacity code
No. of connectable
indoor units
Total capacity code of connectable indoor
units
Equivalent to HP
Min. (HP)
Max. (HP)
0
40
type
4
2 to
6
3.2
5.
2
0
5
0 type
5
2 to
6
4.0
6.5
Selection of refrigerant piping
No.
Piping parts
Name
Selection of pipe size
Remarks
(1)
Outdoor unit
1st branching
section
Main pipe
Size of main pipe
Same as connecting
pipe size of the outdoor
unit.
(2)
Branching section
Branching section
Branching
pipe
Pipe size between branching sections
Pipe size differs based
on the total capacity
code value of indoor
units at the downstream
side. If the total value
exceeds the capacity
code of the outdoor unit,
apply the capacity code
of the outdoor unit. (See
Table 1 and 2.)
Outdoor unit
Outdoor unit capacity type
Gas pipe
Liquid pipe
0
401
type
15.88
9.52
0
501
type
15.88
9.52
Total capacity codes of
indoor units at down stream
side
Gas pipe
Liquid pipe
Equivalent to
HP
Equivalent to
capacity
Below 2.4
Below 6.
4
12.70
9.52
2.4 or more
Below 6.4
15.88
9.52
2FAN_IM_DB04905901-00.book Page 9 Friday, October 24, 2014 3:19 PM
(4)
(4)
(2)
(1)
(3)
(2)
(3)
(3)
Y-shaped
branching joint
(4)
Main pipe
1st branching
section
Branching pipe
Branching
header
unit
Indoor
Branching
pipe
((33))
((33))
(3)
0
601
type
1
9
.
05
9.52
Below 6.4
6.
4
or more
1
9
.
05
9.52
0
6
0 type
6
2 to
6
4.8
7.8
4.0
1
5
.0
1
6
.0
1
Summary of Contents for MCY-MAP0401TP Series
Page 32: ......
