Toshiba RAV-GP801AT-E Mode D'emploi page 80

Supplied protective bush
Supplied passage hole guard material
* Attach the guard material securely
so that it does not come loose.
Optional Installation Parts
(Locally procured)
Parts name
Refrigerant piping
A Liquid side: Ø9.5 mm
Gas side: Ø15.9 mm
Pipe insulating material
B
(polyethylene foam, 10 mm thick)
C Putty, PVC tape
EN-157
Refrigerant Piping Connection
CAUTION
Take note of these 4 important points below for
piping work
1. Keep dust and moisture away from inside the
connecting pipes.
2. Tightly connect the connection between pipes and
the unit.
3. Evacuate the air in the connecting pipes using a
VACUUM PUMP.
4. Check for gas leaks at connection points.
Piping connection
Q'ty Liquid side
Outer diameter
One each
9.5 mm
1
Gas side
Outer diameter
One each
15.9 mm
Flaring
1. Cut the pipe with a pipe cutter.
Be sure to remove burrs that may cause a gas leak.
2. Insert a flare nut into the pipe, and then flare the
pipe.
Use the flare nuts supplied with the air conditioner
or those for R32.
Insert a flare nut into the pipe, and flare the pipe.
Use the flare nuts supplied with the air conditioner
or flare nuts for R32 or R410A.
However, the conventional tools can be used by
adjusting the projection margin of the copper pipe.
Projection margin in flaring: B (Unit: mm)
Rigid (Clutch type)
Outer dia. of
copper pipe
9.5
15.9
Flaring diameter size: A (Unit: mm)
Thickness
Outer dia. of copper pipe
0.8 mm
9.5
15.9
Thickness
1.0 mm
CAUTION
• Do not scratch the inner surface of the flared part
when removing burrs.
• Flare processing under the condition of scratches on
the inner surface of flare processing part will cause
refrigerant gas leak.
• Check that the flared part is not scratched, deformed,
stepped, or flattened, and that there are no chips
adhered or other problems, after flare processing.
• Do not apply refrigerating machine oil to the flare
surface.
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Tightening of Connecting Part
B
1. Align the centers of the connecting pipes and fully
tighten the flare nut with your fingers. Then fix the
nut with a wrench as shown in the figure and tighten
it with a torque wrench.
2. As shown in the figure, be sure to use two wrenches
to loosen or tighten the flare nut of the valve on the
gas side. If you use a single crescent, the flare nut
R32 or R410A Conventional
cannot be tightened to the required tightening torque.
tool used tool used
On the other hand, use a single crescent to loosen
or tighten the flare nut of the valve on the liquid side.
0 to 0.5 1.0 to 1.5
Outer dia. of copper pipe
A
<GP80>
Valve at gas side
+0
A
–0.4
13.2
19.7
CAUTION
(Unit: N•m)
Tightening torque
9.5 mm 33 to 42
15.9 mm 68 to 82
Flare nut
Tightened
Loosened
Incorrect
Charge port
Cap
EN-158