3 SELECTION OF INSTALLATION
How to remove the front panel
1.Remove screws of the front panel.
2.Pull the front panel downward.
Removing the front panel, the electric parts appear at the front side.
•The metal pipes are attachable to the piping holes. If the size of the used power pipe does not match with the hole, adjust the hole size to match with pipe size.
•Be sure to fix the power cable and indoor/outdoor connecting cable with bundling band sold on the market so that they do not make contact with the compressor and discharge pipe.
(Temperature of the compressor and discharge pipe becomes high.)
In order to avoid the force applied to on the connect- ing section, be sure to fix the cables to the cord clamps provided on the pipe valve fixing plate and the electric parts box.
Electric parts box | Front panel |
Terminal 
plate
Piping hole
Cord clamp
4 REFRIGERANT PIPING
Pipe Forming/End Positioning
Flaring
1. Cut the pipe with a pipe cutter.
*In case of flaring for R410A with the conventional flare tool, pull it out approx. 0.5 mm more than that of R22 to adjust to the specified flare size. The copper pipe gauge is useful for adjusting projection margin
size.
A 
90˚ | Obliquity Roughness | Warp |
2. 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 conventionalB tools can be used by adjusting
projection margin of the copper pipe.
• Flaring size : A (Unit : mm)
| A | +0 | |
Outer dia. of copper pipe |
| - 0.4 | |
R410A | R22 | ||
| |||
|
|
| |
6.4 | 9.1 | 9.0 | |
|
|
| |
9.5 | 13.2 | 13.0 | |
|
|
| |
12.7 | 16.6 | 16.2 | |
|
|
| |
15.9 | 19.7 | 19.4 | |
|
|
|
• Projection margin in flaring : B (Unit : mm)
Rigid (Clutch type)
Outer dia. | R410A tool used | Conventional tool used | |||
of copper |
|
|
|
| |
R410A | R22 | R410A | R22 | ||
pipe | |||||
|
|
|
|
| |
6.4 | 0 to 0.5 | (Same as left) | 1.0 to 1.5 | 0.5 to 1.0 | |
|
|
|
|
| |
9.5 | 0 to 0.5 | (Same as left) | 1.0 to 1.5 | 0.5 to 1.0 | |
|
|
|
|
| |
12.7 | 0 to 0.5 | (Same as left) | 1.0 to 1.5 | 0.5 to 1.0 | |
|
|
|
|
| |
15.9 | 0 to 0.5 | (Same as left) | 1.0 to 1.5 | 0.5 to 1.0 | |
|
|
|
|
| |
Imperial (Wing nut type)
Outer dia. of copper pipe | R410A | R22 |
|
|
|
6.4 | 1.5 to 2.0 | 1.0 to 1.5 |
|
|
|
9.5 | 1.5 to 2.0 | 1.0 to 1.5 |
|
|
|
12.7 | 2.0 to 2.5 | 1.5 to 2.0 |
|
|
|
15.9 | 2.0 to 2.5 | 1.5 to 2.0 |
|
|
|
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