Installation Manual
– 18 –
EN
(1)
Outdoor unit
1st branching
section
Main pipe
Size of main pipe
0806 type
1006 type
*The main liquid pipe
size differs based on
outdoor unit capacity
type, equivalent length
of main pipe, and hight
difference between
outdoor and indoor
units.
(2)
Branching section
Branching section
Branching
pipe
Pipe size between branching sections
* When exceed the main pipe size, use the same size as
the main pipe.
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.)
(3)
Branching section
Indoor unit
Indoor unit
connecting
pipe
Connecting pipe size of indoor unit
Conditions for size of main pipe
selection*
Size of main
pipe
Height between
indoor and outdoor
units H1(m)
Equivalent
length of main
pipe L1(m)
Gas
pipe
Liquid
pipe
30
≧
H1 > 20
40 > L1
19.05
9.52
L1
≧
40
12.70
20
≧
H1 > 10
60 > L1
9.52
L1
≧
60
12.70
10
≧
H1 > 0
No condition
9.52
Conditions for size of main pipe
selection*
Size of main
pipe
Height between
indoor and outdoor
units H1(m)
Equivalent
length of main
pipe L1(m)
Gas
pipe
Liquid
pipe
30
≧
H1 > 20
30 > L1
22.22
9.52
L1
≧
30
12.70
20
≧
H1 > 10
40 > L1
9.52
L1
≧
40
12.70
10
≧
H1 > 0
50 > L1
9.52
L1
≧
50
12.70
Total capacity codes of
indoor units at down stream
side
Gas pipe
Liquid pipe
Equivalent to
HP
Equivalent to
capacity
Below 2.4
Below 6.6
12.70
9.52
2.4 to below
6.4
6.6 to below
18.0
15.88
9.52
6.4 or more
18.0 or more
22.22
12.70
Capacity rank
Gas pipe
Liquid pipe
005 to 012 type
9.52
6.35
014 to 018 type
12.70
6.35
020 to 056 type
15.88
9.52
(4)
Branching section
Y-shaped
branching
joint
Selection of branching section (Y-shaped branching joint)
(5)
Branching section
Branching
header
Selection of branching section (Branching header)
(6)
PMV Kit
PMV Kit
Selection of PMV Kit
* PMV kit can be connected less than 027 type FCU.
Total capacity codes of indoor
units at down stream side
Model name
Equivalent to
HP
Equivalent to
capacity
Y-sharp branch joint
Below 6.4
Below 18.0
RBM-BY55E
6.4 or more
18.0 or more
RBM-BY105E
Model name
Branching header
For 4 branches RBM-HY1043E
For 8 branches RBM-HY1083E
Capacity rank
Model name
005 to 014 type
RBM-PMV0363E
015 to 027 type
RBM-PMV0903E
EN-35
EN-36
2FAN_IM_DB04307201-04_EN.book Page 18 Tuesday, December 17, 2019 6:34 PM
