Carrier XCT 7 40VA003D7FAQEE Manual Del Usuario página 15

Installation procedure
Piping maintenance
During installation, maintenance should be carried out as specified in the table to prevent water, foreign matter, and
dust from entering the pipes.
Location Work period
More than 1 month
Outdoors
Less than 1 month
Indoors ——
Note
When a pipe has to penetrate through a wall or extend outdoors, ensure foreign matter and dust do not enter the pipe.
Attention item for piping connection
• To connect a pipe to or remove it from the connection kit, use pliers for screws and a torque spanner;
• When installing the connection kit, please fix the box and connecting pipes in an efficient manner to avoid shaking
when changing the connection kit.
• For the sizes of the flares, please refer to <Table-1>.
<Note>
• For connection at a flare, apply ester or ether oil to the flare (both inner surface and outer surface). Apply this oil 3
to 4 times and insert the screw in the first use
• The tightening torque for the flare is given in <Table-1>.
If no torque wrench is available, do the following:
Use a spanner to tighten the nut of the flare until the tightening torque sharply increases.
The tightening angle is the position where the tightening torque sharply increases <Table -2>.
After the work is complete, ensure there is no air leakage.
<Table-1>
Tube size Tightening torque (N.m) Machined flare size A (mm)
Ø6.35 14.2~17.2
Ø9.52 32.7~39.9
Ø12.7 49.5~60.3
Ø15.88 61.8~75.4
Ø19.05 97.2~118.8
Maintenance method
Screw
Screw or strap
8.7~9.1
12.8~13.2
16.2~16.6
19.3~19.7
23.7—23.9
14
Flare shape