Toshiba Carrier RBM-Y0384FUL Manuel Du Propriétaire page 9

Pipe connecting process
• Connect the pipes.
• Use attached-pipe (accessory) to connect the pipe with different diameter from the pipe to Flow Selector unit
(RBM-Y0384FUL).
Liquid pipe
Discharge gas pipe
Suction gas 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.
EN-15
Liquid pipe
Gas pipe
Attached pipes
(Accessory: RBM-Y0384FUL)
CAUTION
Apply brazing to full circumference.
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 R410A.
Do not turn on the power until the airtight test and the vacuuming have finished.
(If turning on the power, the incorporated PMV is closed fully and the period until the vacuuming finishes
elongates.)
Open fully valves of the outdoor unit
Gas leak check
Check with a leak detector or soap water whether gas leaks or not, from the pipe connecting section.
REQUIREMENT
Use a leak detector manufactured exclusively for HFC refrigerant (R410A, R134a, etc.).
Heat insulating process
Perform heat insulating for each pipes separately. Perform heat insulating for each pipes separately.
In cooling time, temperature at both liquid and gas sides becomes
lower.
Therefore, perform heat insulating process sufficiently to avoid dewing.
• For heat insulator of pipe at gas side, be sure to use one with
heat-resisting temp. 248 °F (120 °C) or more.
• Using the attached heat insulating pipe, perform heat insulating
process securely for pipe connecting part of the Flow Selector units
without clearance.
REQUIREMENT
Apply the heat insulation to the pipe connecting section of the Flow Selector unit securely up to the root without
exposure of the pipe. (The pipe exposed to the outside causes water leak.)
8
Flow Selector unit
The slit shall be
upper side.
Heat insulator
Heat insulating
pipe (Attached)
EN
EN-16