Toshiba RBM-Y1123FE, Руководство по установке, Страница: 6 / 16

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REFRIGERANT PIPING
WARNING
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
The length of a connection pipe to the indoor unit should be 15m or less.
For details, refer to 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 2.5 to 3m.
If the pipe is not fixed, noise may be generated.
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Piping material and dimensions
One indoor unit connection
Outdoor unit Flow selector unit
Indoor unit
* Use pipes attached with the Flow Selector unit.
Multi indoor unit connection
For selection of the branching pipe, refer to the
Installation Manual attached to the outdoor unit.
Outdoor unit
Flow selector unit
Indoor unit
Material
Flow Selector unit
Indoor unit
Indoor unit side pipe size
(mm)
Outdoor unit side pipe size
(mm)
Seamless phosphorus deoxidized copper pipe for air conditioning
RBM- Y1123FE Y1803FE Y2803FE
MM
∗
-AP
∗∗∗
007 to 012 015 to 018 024 to 030 036 to 056 072 to 096
Gas pipe Ø9.5* Ø12.7* Ø15.9 Ø15.9 Ø22.2
Liquid pipe Ø6.4* Ø6.4* Ø9.5 Ø9.5 Ø12.7 *
Suction gas pipe Ø15.9 * Ø15.9 * Ø15.9 Ø15.9 Ø22.2
Discharge gas pipe Ø12.7 * Ø12.7 * Ø12.7 Ø12.7 Ø19.1
Liquid pipe Ø9.5 * Ø9.5 * Ø9.5 Ø9.5 Ø12.7 *
Material
Flow Selector unit
Indoor unit capacity code
Indoor unit side pipe size
(mm)
Outdoor unit side pipe size
(mm)
Connectable indoor units
Seamless phosphorus deoxidized copper pipe for air conditioning
RBM- Y1123FE Y1803FE Y2803FE
Less than 11.2
11.2 or more 18.0 or more
less than 18.0 less than 22.0
Gas pipe Ø15.9 Ø15.9 Ø22.2
Liquid pipe Ø9.5 Ø9.5 Ø12.7 *1
Suction gas pipe Ø15.9 Ø15.9 Ø22.2
Discharge gas pipe Ø12.7 Ø12.7 Ø19.1
Liquid pipe Ø9.5 Ø9.5 Ø12.7 *1
5 8 8
Attached pipe
Attached pipe
Pipe procured locally
Pipe procured locally
Gas pipe
Liquid pipe
Pipe procured locally
Pipe procured locally
Discharge gas pipe
Liquid pipe
Suction gas pipe
Pipe procured locally
Discharge gas pipe
Liquid pipe
Suction gas pipe
Gas pipe
Liquid pipe
Discharge gas pipe
Liquid pipe
Liquid pipe
Gas pipe
Suction gas pipe
Pipe procured locally
Wet cloth
Remove the cap.
Insert the connecting pipe.
* Be sure to wrap the pipe with wet cloth when applying brazing.
Apply brazing to full circumference.
<RBM-Y1123FE (Use pipes attached with the Flow Selector unit.)>
<RBM-Y1123FE, RBM-Y1803FE>
<RBM-Y2803FE (Use pipes attached with the Flow Selector unit.)>
CAUTION
• For a brazing work of the refrigerant pipes, be sure to use nitrogen gas in order to prevent oxidation of the
inside of the pipes; otherwise clogging of the refrigerating cycle due to oxidized scale may occur.
* Remove all flux after brazing.