17
Super Digital Inverter
Optional Installation Parts
(Locally procured)
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
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 R410A.
Insert a flare nut into the pipe, and flare the pipe.
As the flaring sizes of R410A differ from those of
refrigerant R22, the flare tools newly manufactured for
R410A are recommended.
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)
Flaring diameter size: A (Unit: mm)
*
In case of flaring for R410A with the conventional flare
tool, pull the tool out approx. 0.5 mm more than that for
R22 to adjust it to the specified flare size.
The copper pipe gauge is useful for adjusting the
projection margin size.
Parts name
Q’ty
A
Refrigerant piping
Liquid side: Ø9.5 mm
Gas side: Ø15.9 mm
One each
B
Pipe insulating material
(polyethylene foam, 10 mm thick)
1
C
Putty, PVC tape
One each
Liquid side
Outer diameter
Thickness
Ø9.5 mm
0.8 mm
Gas side
Outer diameter
Thickness
Ø15.9 mm
1.0 mm
Outer diam. of
copper pipe
R410A tool used
Conventional tool
used
R410A
1.0 to 1.5
9.5
0 to 0.5
15.9
Outer diam. of copper pipe
A
9.5
13.2
15.9
19.7
B
A
+0
–0.4
EN-17
Summary of Contents for RAV-SP1104AT8-E
Page 35: ...EH99870701 a ...
