Toshiba Carrier MMY-MAP1446FT9P-UL Manuel d'installation - Page 12
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(1) Outdoor unit connecting pipe
Outdoor unit capacity type (*1)
Balance pipe side
072 type, 096 type
120 type
144 type
168 type
(2) Connecting pipe between outdoor units
Total capacity code of the outdoor
Suction gas side
units at downstream side (*1) (*7)
336
360 or more
(3) Main pipe
Total capacity code of all
Suction gas side
outdoor units
072, 096
120
144
168, 192
216, 240
264, 288, 312, 336
360 or more
(4) Branching pipe
Total capacity code of indoor units
Suction gas side
at downstream side (*1) (*2) (*3) (*8)
Below 61
61 to below 115.5
115.5 to below 153.5
153.5 to below 191.5
191.5 to below 239
239 to below 334
334 or more
(5) 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 connection pipe
Indoor unit capacity code
49 ft or less
Pipe length
007 to 012 type
(Actual length)
49 ft or less
Pipe length
015 to 018 type
(Actual length)
021 to 054 type
072 to 096 type
21-EN
Discharge
Suction gas side
gas side
Ø3/8"
Ø7/8"
Ø3/4"
Ø3/8"
Ø1-1/8"
Ø3/4"
Ø3/8"
Ø1-1/8"
Ø7/8"
Ø3/8"
Ø1-1/8"
Ø7/8"
Discharge
Liquid side
gas side
Ø1-3/8"
Ø1-1/8"
Ø7/8"
Ø1-5/8"
Ø1-1/8"
Ø7/8"
Discharge
Liquid side
gas side
Ø7/8"
Ø3/4"
Ø1/2"
Ø1-1/8"
Ø3/4"
Ø1/2"
Ø1-1/8"
Ø7/8"
Ø5/8"
Ø1-1/8"
Ø7/8"
Ø3/4"
Ø1-3/8"
Ø1-1/8"
Ø3/4"
Ø1-3/8"
Ø1-1/8"
Ø7/8"
Ø1-5/8"
Ø1-3/8"
Ø7/8"
Discharge
Liquid side
gas side
Ø5/8"
Ø1/2"
Ø3/8"
Ø7/8"
Ø3/4"
Ø1/2"
Ø1-1/8"
Ø7/8"
Ø5/8"
Ø1-1/8"
Ø7/8"
Ø3/4"
Ø1-3/8"
Ø1-1/8"
Ø3/4"
Ø1-3/8"
Ø1-1/8"
Ø7/8"
Ø1-5/8"
Ø1-3/8"
Ø7/8"
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"
Over 49 ft
Ø1/2"
Ø3/8"
Ø1/2"
Ø1/4"
Over 49 ft
Ø5/8"
Ø3/8"
Ø5/8"
Ø3/8"
Ø7/8"
Ø1/2"
– 11 –
(7) Y-shaped branching joint (*3) (*4)
Total capacity code of indoor units
Liquid side
on downstream side from
Y-shaped branching joint (*4) (*5)
Ø1/2"
Ø1/2"
Ø5/8"
61 to below 134.5
Ø3/4"
134.5 to below 239
239 or more
(8) Branching header
Total capacity code of the indoor units
on downstream side from
branching header (*4) (*5) (*6)
For 4 branching
For 8 branching
(9) Outdoor unit connection piping kit
Total capacity code of the outdoor
units at downstream side (*1) (*7)
247 or more
(10) Flow Selector unit (*9)
Single port type (*10)
Total capacity code of outdoor units
on downstream side from FS unit
38 to below 61
61 to 96 or less
Multi port type (*11)
Total capacity code of outdoor units
on downstream side from FS unit
(*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) and less than
247 (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 main pipe is the starting point. The follower unit side is the downstream side.
(*8) : Selection piping is the starting point. The indoor unit side is the downstream side.
(*9) : If the code of outdoor unit is over 408, "Flow Selector unit" is available for only Multi port type.
(*10) : The group connection of the multiple indoor units is possible up to maximum 8 units, and it is possible only within one FS unit.
(*11) : 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
For 3 pipe
Below 61
RBM-BY55FUL
RBM-BY105FUL
RBM-BY205FUL
RBM-BY305FUL
Model name
For 3 pipe
Below 134
RBM-HY1043FUL
134 to below 240
RBM-HY2043FUL
Below 134
RBM-HY1083FUL
134 to below 240
RBM-HY2083FUL
Model name
Below 247
RBM-BT14FUL
RBM-BT24FUL
Model name
Below 38
RBM-Y0383FUL
RBM-Y0613FUL
RBM-Y0963FUL
No. of branch
4
Below 61
6
For 2 pipe
RBM-BY55UL
RBM-BY105UL
RBM-BY205UL
RBM-BY305UL
For 2 pipe
RBM-HY1043UL
RBM-HY2043UL
RBM-HY1083UL
RBM-HY2083UL
Model name
RBM-Y0613F4PUL
RBM-Y0613F6PUL
22-EN