Refrigerant Piping - Toshiba Rbm-Svb0611Hupeul Manual De Instalación

5

REFRIGERANT PIPING

WARNING
If refrigerant gas has leaked during the installation work, ventilate the air 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 Shut-off Valve BOX (default)
■
Material: Phosphorus deoxidation seam-less pipe.
Outdoor unit side
(Upstream)
RBM–***
Gas pipe Liquid pipe
SVB0611HUPEUL Ø5/8" (Ø15.9) Ø3/8" (Ø9.5)
Minimum wall thickness for R454B application.
Soft Half hard or hard
in
OK OK 3/8"
OK OK 5/8"
EN-17
Unit : in (mm)
Indoor unit side
(Downstream)
Gas pipe Liquid pipe
Ø5/8" (Ø15.9) Ø3/8" (Ø9.5)
OD Minimum wall thickness
mm in mm
9.52 0.031" 0.8
15.88 0.039" 1.0
9
Pipe connecting process
■
• Connect the pipes.
Gas pipe
Liquid pipe
* Be sure to wrap the pipe with wet cloth when applying brazing.
Wet cloth
Remove the cap.
Insert the connecting pipe.
• 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.
Airtight test/Air purge, etc .
■
For airtight test, air purge, addition of refrigerant, and gas leak check, follow the Installation Manual attached to the
outdoor unit.
REQUIREMENT
Be sure to use the tool such as charge hose exclusive to R454B or R410A.
Do not turn on the power until the airtight test and the vacuuming have finished.
(If the power is turned off after being turned on, the shutoff valve will automatically be locked in the fully closed
position. If it is locked, release the lock according to the instruction manual for the outdoor unit and perform a
vacuum on the piping.)
Gas pipe
Liquid pipe
CAUTION
Apply brazing to full circumference.
EN-18