Carrier 38VT 188CTST Series - Page 18

– 17 –
epyt 192 ot 128
*2: Up to a total of 6.0 maximum equivalent to HP capacity codes is connectable to one
line after branching of header. When the total capacity codes of all outdoor units are 12
to below 26 (equivalent to HP) and you use a branching header for the first branching
section, use a RBM-HY2043E or RBM-HY2083E regardless of the total capacity codes
of outdoor units at downstream side. In addition, you cannot use a branching header for
the first branching section when the total capacity codes of all outdoor units are over 26
(equivalent to HP).
(8)
Branching
section
Outdoor unit
connection
piping kit
(For linking of
outdoor units)
Outdoor unit connection piping kit (For linking of outdoor units)
Total capacity code of
outdoor units
*3
Model name
Outdoor unit
connection piping kit
(For linking of outdoor
units)
Equivalent to capacity
(HP)
Below 26 RBM-BT14E
26 to below 62 RBM-BT24E
62 or more RBM-BT34E
*3: Upstream side when regarding the main piping as the start point
No. Piping parts Name Selection of pipe size Remarks
(4)
Branching
section
Branching
section
Branching pipe
Pipe size between branching sections
Total capacity codes of indoor units at
downstream side
Equivalent to
capacity (HP)
Gas side Liquid side
Below 2.4 12.7 9.5
2.4 to below 6.4 15.9 9.5
6.4 to below 12.2 22.2 12.7
12.2 to below 20.2 28.6 15.9
20.2 to below 22.4 28.6 19.1
22.4 to below 25.2 34.9 19.1
25.2 to below 35.2 34.9 19.1
35.2 to below 61.2 41.3 22.2
61.2 to below 75.2 54.0 22.2
75.2 or more 54.0 22.2
*1
*1 If the liquid side piping size of main piping is increased
to Dia. 25.4 ( one size up), the liquid side piping size
also has to change to Dia. 25.4.
Pipe size differs
based on the total
capacity code value
of indoor units at the
downstream side.
If the total capacity
code value of indoor
units exceeds that
of the outdoor units,
apply the capacity
code of the outdoor
units.
(5)
Branching
section
Indoor unit
Indoor unit
connecting
pipe
Connecting pipe size of indoor unit
Capacity rank Gas side
Liquid
side
007 to 012 type
15 m or less real length 9.5 6.4
Real length exceeds 15 m 12.7 6.4
4.67.21epyt 810 ot 410
5.99.51epyt 650 ot 020
7.212.22epyt 690 ot 270
7.216.82epyt 211
9.516.82
(6)
Branching
section
Y-shaped
branching joint
Selection of branching section (Y-shaped branching joint)
Total capacity code of
indoor
Model name
Equivalent to capacity
(HP)
Y-shape
branching joint
Below 6.4 RBM-BY55E
6.4 to below 14.2 RBM-BY105E
14.2 to below 25.2 RBM-BY205E
25.2 to below 61.2 RBM-BY305E
61.2 or more RBM-BY405E
No. Piping parts Name Selection of pipe size Remarks
(7)
Branching
section
Branching
header
Selection of branching section (Branching header)
Total capacity code of indoor units
Model name
Equivalent to capacity (HP)
*2
Branching header
For 4 branches
Below 14.2 RBM-HY1043E
14.2 to below 25.2 RBM-HY2043E
For 8 branches
Below 14.2 RBM-HY1083E
14.2 to below 25.2 RBM-HY2083E