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Idiomas disponibles
Idiomas disponibles
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Selection of pipe size
Header unit
Follower unit
A
B
Outdoor unit
(1)
(1)
(8)
(8)
(2)
(2)
(8)
(8)
Downstream side for outdoor unit
(3)
Main pipe
(6)
Y-shape branching joint
(4)
1st
Downstream side for indoor unit
branching
section
(5)
(4)
Indoor unit
(6)
(6)
(4)
(5)
Indoor unit
(1) Outdoor unit connecting pipe
Suction
Outdoor unit capacity type
gas side
072 type
3/4"
096 type
7/8"
120 type
1-1/8"
144 type
1-1/8"
168 type
1-1/8"
192 type
1-1/8"
(2) Pipe between Outdoor units
Total capacity code of the
Suction
outdoor units
gas side
at downstream side (*1)
Below 216
1-1/8"
216 to below 288
1-3/8"
288 or more
1-5/8"
23-EN
Follower unit
C
(1)
(1)
Outdoor unit connecting pipe
(8)
Branching joint for outdoor unit
(7)
Header branching pipe
(6)
(4)
(5)
(5)
(5)
(6)
(6)
(4)
(4)
(5)
(5)
(5)
Liquid
side
1/2"
1/2"
1/2"
5/8"
5/8"
5/8"
Liquid
side
5/8"
3/4"
3/4"
(3) Main pipe (*2)
Outdoor unit capacity type
072 type
096 type
120 type
144, 168 type
192 type
216 to below 264
264 to below 336
336 to below 432
432 or more
(4) Branching pipe (*7) (*8)
Total capacity code of
indoor units
at downstream side (*1)
(5)
Below 23
23 to below 61
61 to below 116
116 to below 155
155 to below 193
193 to below 213
213 to below 336
336 or more
(5)
(*1) : The downstream starting point is the main pipe.
(*2) : Main pipe should be selected based on the capacity type of the outdoor unit.
(*3) : The branch pipe of the fi rst branch should be selected based on the capacity type of the outdoor unit.
(*4) : Select according to the outdoor unit capacity code if the total of the indoor capacity codes exceeds the outdoor unit
capacity code.
(*5) : When a branch header is used for the fi rst branching of an outdoor unit with a capacity type of 120 (kBTU/h) or more
and 247 (kBtu/h) or less, use RBM-HY2043UL (4 branches) and RBM-HY2083UL (8 branches) regardless of the total
capacity code of the downstream indoor units. In addition, for outdoor units of 264 type or larger, the branching header
cannot be used as the fi rst branch.
(*6) : It is possible to select up to a maximum capacity code of 57 in total for each one branch of the branching header.
(*7) : Use the same size as the main pipe if it is larger than the main pipe.
(*8) : When the capacity code of the outdoor unit is 480, it is necessary to increase one size the gas pipe.
– 12 –
Liquid side
Suction
Standard
Refrigerant
gas side
size
saving size
3/4"
1/2"
3/8"
7/8"
1/2"
3/8"
1-1/8"
1/2"
-
1-1/8"
5/8"
1/2"
1-1/8"
5/8"
-
1-3/8"
3/4"
5/8"
1-3/8"
3/4"
-
1-5/8"
7/8"
3/4"
1-5/8"
7/8"
3/4"
Suction
Liquid
gas side
side
1/2"
3/8"
5/8"
3/8"
7/8"
1/2"
1-1/8"
5/8"
1-1/8"
5/8"
1-1/8"
3/4"
1-3/8"
3/4"
1-5/8"
7/8"
Farthest
piping
length
98 ft (30 m)
98 ft (30 m)
-
164 ft (50 m)
-
263 ft (80 m)
-
263 ft (80 m)
164 ft (50 m)
EN
EN
ID
24-EN
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