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Selection of refrigerant piping for quiet place (with PMV Kit)
Outdoor unit
Gas pipe
Liquid pipe
1st branching
Branching
pipe
section
Main pipe
(4)
(2)
(1)
Branching
pipe
(2)
No.
Piping parts
Name
Connecting pipe size of outdoor unit
Out door unit capacity type
Outdoor unit
(1)
Main pipe
1st branching
section
Pipe size between branching sections
Total capacity codes of indoor
units at downstream side
Branching section
Equivalent to HP
(2)
Branching pipe
Branching section
Below 2.4
2.4 or more
* When exceed the main pipe size, use the same size as the main
pipe.
Connecting pipe size of indoor unit
Capacity type
Branching section
Indoor unit
(3)
connecting pipe
003 to 012 type
Indoor unit
014 to 018 type
020 to 056 type
59-EN
Branching
header
(5)
(7)
(6)
(6)
(6)
(6)
(3)
(3)
(3)
(3)
Y-shaped
(4)
branching joint
(6)
(6)
(3)
(3)
Selection of pipe size (Unit: mm)
Gas pipe
Liquid pipe
Same as connecting
0401 type
15.88
9.52
pipe size of the
outdoor unit.
0501 type
15.88
9.52
0601 type
15.88
9.52
Pipe size differs based
on the total capacity
code value of indoor
Gas
Liquid
units at the
pipe
pipe
Equivalent to
downstream side. If
capacity [kW]
the total value
exceeds the capacity
Below 6.6
12.70
9.52
code of the outdoor
unit, apply the
6.6 or more
15.88
9.52
capacity code of the
outdoor unit. (See
Table 1 and 2.)
Liquid
Gas pipe
pipe
9.52
6.35
12.70
6.35
15.88
9.52
No.
Piping parts
Branching section Y-shaped
(4)
branching joint
(5)
Branching section Branching header
PMV Kit
(6)
PMV Kit
PMV Kit
Indoor
unit
(7)
Shut-off Valve unit Shut-off Valve unit
Indoor
unit
Remarks
– 30 –
Name
Selection of pipe size
Selection of branching section (Y-shaped branching joint)
Model name
Y-shape branching joint
RBM-BY55E
Selection of branching section (Branching header)
For 4 branches
RBM-HY1043E
Branching header*1
For 8 branches
RBM-HY1083E
* A capacity code of up to a maximum of 6.0 HP is connectable to one line after branching
from the header.
Selection of PMV Kit
Capacity rank
003 to 014 type
015 to 034 type
PMV kit can be connected less than 034 type indoor unit.
Selection of Shut-off Valve unit
Total capacity code
of indoor units at
downstream side
Model name
Equivalent to
capacity (HP)
Below 4.0
RBM-SV1121HUPE
4.0 or more
RBM-SV1801HUPE
Model name
Model name
RBM-PMV0361U-E
RBM-PMV0901U-E
Maximum
Gas
Liquid
number of
pipe
pipe
connectable
indoor units
12.70
9.52
6
15.88
9.52
10
EN
60-EN
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