Toshiba MMY-MAP0726FT2P-UL Installation Manual page 12

(1) Outdoor unit connecting pipe
Outdoor unit capacity type (*1) Balance pipe side
072 type
144 type
(3) Main pipe
Total capacity code of all
Suction gas side
outdoor units
072
144 Ø1-1/8"
(4) Branching pipe
Total capacity code of indoor units
Suction gas side
at downstream side (*1) (*2) (*3)
Below 61
61 to below 115.5
115.5 or more Ø1-1/8"
(5) Single port type FS unit and indoor unit connection pipe
Indoor unit capacity code
007 to 012 type
015 to 018 type
021 to 054 type
072 to 096 type
(6) Branching and indoor unit, Multi port type FS unit and Indoor unit connection pipe
Indoor unit capacity code
49 ft or less
Pipe length
007 to 012 type
(Actual length)
Over 49 ft
49 ft or less
Pipe length
015 to 018 type
(Actual length)
Over 49 ft
021 to 054 type
072 to 096 type
(7) Y-shaped branching joint
Total capacity code of indoor units
on downstream side from
Y-shaped branching joint (*4) (*5)
Below 61
61 to below 134.5
134.5 or more
(8) Branching header
Total capacity code of the indoor units
on downstream side from
branching header (*4) (*5) (*6)
Below 134
For 4 branching
134 or more
Below 134
For 8 branching
134 or more
21-EN
1122001201_EN FR.indd 11 1122001201_EN FR.indd 11
Discharge
Suction gas side
gas side
Ø3/8" Ø7/8" Ø3/4"
Ø3/8" Ø1-1/8" Ø7/8"
Discharge
Liquid side
gas side
Ø7/8" Ø3/4" Ø1/2"
Ø7/8" Ø5/8"
Discharge
Liquid side
gas side
Ø5/8" Ø1/2" Ø3/8"
Ø7/8" Ø3/4" Ø1/2"
Ø7/8" Ø5/8"
Gas side Liquid side
Ø3/8" Ø1/4"
Ø1/2" Ø1/4"
Ø5/8" Ø3/8"
Ø7/8" Ø1/2"
Gas side Liquid side
Ø3/8" Ø1/4"
Ø1/2" Ø3/8"
Ø1/2" Ø1/4"
Ø5/8" Ø3/8"
Ø5/8" Ø3/8"
Ø7/8" Ø1/2"
Model name
For 3 pipe For 2 pipe
RBM-BY55FUL RBM-BY55UL
RBM-BY105FUL RBM-BY105UL
RBM-BY205FUL RBM-BY205UL
Model name
For 3 pipe For 2 pipe
RBM-HY1043FUL RBM-HY1043UL
RBM-HY2043FUL RBM-HY2043UL
RBM-HY1083FUL RBM-HY1083UL
RBM-HY2083FUL RBM-HY2083UL
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(9) Outdoor unit connection piping kit
Total capacity code of the outdoor
Liquid side
units at downstream side (*1)
Ø1/2" Below 144
Ø5/8"
(10) Flow Selector unit
Single port type (*7)
Total capacity code of outdoor units
on downstream side from FS unit
Below 38
38 to below 61
61 to 96 or less
Multi port type (*8)
Total capacity code of outdoor units
on downstream side from FS unit
Below 61
(*1) : The capacity code of outdoor unit and indoor unit, please refer to "Capacity code of indoor and outdoor units".
(*2) : If the size of the pipe to be selected is larger than the size of the main pipe, please use the same pipe size as the main pipe.
(*3) : Two pipes in downstream of FS unit and cooling only indoor unit use liquid pipe and suction gas pipe.
(*4) : The first branching joint, select at capacity code of outdoor unit.
(*5) : If the total capacity code of indoor units exceed the capacity code of outdoor unit, select the size from the capacity code of the outdoor unit.
(*6) : For one line pipe line of header branching, total 57 capacity code of indoor units is connectable.
If connecting the branching header to the first branch section with the capacity code of outdoor unit is more than 114 (kBtu/h), use the
RBM-2043FUL (4 branch), and RBM-HT2083FUL (8 branch).
Also, the branching header cannot be used for the first branch section when the capacity code of outdoor unit is more than 247 (kBtu/h).
(*7) : The group connection of the multiple indoor units is possible up to maximum 8 units, and it is possible only within one FS unit.
(*8) : The group connection of the multiple indoor units is possible up to 8 units if one remote controller is used, and it is possible up to 7 units if
two remote controllers are used. The group connection of the multiple indoor units is possible only within one branch.
Model name
RBM-BT14FUL
Model name
RBM-Y0383FUL
RBM-Y0613FUL
RBM-Y0963FUL
No. of branch Model name
4 RBM-Y0611F4PUL
6 RBM-Y0611F6PUL
22-EN
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