Refrigerant Piping - Toshiba RBM-Y0611FU4PUL Installation Manual

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REFRIGERANT PIPING

If refrigerant gas has leaked during the installation work, ventilate the room immediately.
If the leaked refrigerant gas comes in contact with fire, noxious gas may be generated.
After the installation work, confirm that refrigerant gas does not leak.
If refrigerant gas leaks into the room and flows near a fire source, such as a fan heater, cooking stove or heating
unit, noxious gas may be generated.
„ Permissible pipe length and permissible height difference
For piping dimensions, follow the Installation Manual attached to the outdoor unit.
REQUIREMENT
• When the refrigerant pipe is long, set the support brackets to fix the pipe at intervals of 8.2 to 9.8 ft (2.5 to 3 m).
If the pipe is not fixed, noise may be generated.
• Never bend pipes sticking out of the unit.
The connecting pipework must be supported, failure to do so may result in broken pipework within the unit.
„ Connection pipe size of Flow Selector unit (default)
Outdoor unit side
(Upstream)
RBM-Y0611***
Suction gas
HP/LP gas pipe
pipe
FU4PUL
FU8PUL Ø1-1/8" (Ø28.6) Ø7/8" (Ø22.2)
FU12PUL
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01_IM_1143017001-1_EN.indd 7 01_IM_1143017001-1_EN.indd 7
WARNING
(Unit: in (mm))
Indoor unit side
(Downstream)
Liquid pipe Gas pipe Liquid pipe
Ø5/8" (Ø15.9) Ø5/8" (Ø15.9) Ø3/8" (Ø9.5)
HP : high pressure
LP : low pressure
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„ Pipe connecting process
• Connect the pipes. (Be sure to use port No.1)
• Use attached-pipe (accessory) to connect the pipe with different diameter from the pipe to Flow Selector unit.
Suction gas pipe
Liquid pipe
Attached pipe
for main-pipe
HP/LP gas pipe
(Accessory)
HP: high pressure
LP: low pressure
• Use stopper-pipe (accessory) to the port to which indoor unit is not connected.
Be sure to use port No.1
Be sure to use port No.1
Liquid pipe
Attached pipe
(Accessory)
Gas pipe
Stopper pipe
(Accessory)
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