Toshiba MMY-MAP0726FT6P-UL Installation Manual 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

Ø1-3/8"

360 or more

Ø1-5/8"

(3) Main pipe

Total capacity code of all

Suction gas side

outdoor units

072, 096

120

Ø1-1/8"

144

Ø1-1/8"

168, 192

Ø1-1/8"

216, 240

Ø1-3/8"

264, 288, 312, 336

Ø1-3/8"

360 or more

Ø1-5/8"

(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

Ø1-1/8"

153.5 to below 191.5

Ø1-1/8"

191.5 to below 239

Ø1-3/8"

239 to below 334

Ø1-3/8"

334 or more

Ø1-5/8"

(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, Multi port type FS unit, Single port long piping 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

21-EN

1122001001-2_EN-FR.indb 11

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

Ø1-1/8"

Ø7/8"

Ø1-1/8"

Ø7/8"

Discharge

Liquid side

gas side

Ø7/8"

Ø3/4"

Ø1/2"

Ø3/4"

Ø1/2"

Ø7/8"

Ø5/8"

Ø7/8"

Ø3/4"

Ø1-1/8"

Ø3/4"

Ø1-1/8"

Ø7/8"

Ø1-3/8"

Ø7/8"

Discharge

Liquid side

gas side

Ø5/8"

Ø1/2"

Ø3/8"

Ø7/8"

Ø3/4"

Ø1/2"

Ø7/8"

Ø5/8"

Ø7/8"

Ø3/4"

Ø1-1/8"

Ø3/4"

Ø1-1/8"

Ø7/8"

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"

Ø1/2"

Ø3/8"

Ø1/2"

Ø1/4"

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"

Below 61

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)

Below 247

247 or more

(10) Flow Selector unit (*9)

Single port type (*10) / Single port long piping type (*11)

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 (*11) (*12)

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) 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 and Single port long piping 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.

(*12): In the downstream of the multi type FS unit,the header branch cannot be used.

Model name

For 3 pipe

For 2 pipe

RBM-BY55FUL

RBM-BY55UL

RBM-BY105FUL

RBM-BY105UL

RBM-BY205FUL

RBM-BY205UL

RBM-BY305FUL