Refrigerant piping work
4.Cutting and Flaring work of piping
Pipe cutting is carried out with a pipe cutter and burs must be removed. After inserting the flare nut, flaring work is carried out.
A |
Flare tooling die |
| Pipe diameter* | Size A (mm) |
Liquid side | 6.35mm(1/4") | 0.8~1.5 |
|
|
|
Gas side | 9.52mm(3/8") | 1.0~1.5 |
|
|
|
Correct
Incorrect
Lean Damage of flare Crack | Partial | Too outside |
5.On drainage
Please install the drain hose so as to be downward slope without fail. 
Please don't do the drainage as shown below.
It becomes high midway. The end is immersed in | It waves. |
water |
|
Less than 5cm |
It gap with the ground | There is the bad smell |
ts too small. | from a ditch. |
Please pour water in the drain pan of the indoor unit, and confirm that drainage is carried out serely to outdoor.
In case that the attached drain hose is in a room, please apply heat insulation to it without fail.
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