SERVICE MANUAL - Alarko Carrier
SERVICE MANUAL - Alarko Carrier
SERVICE MANUAL - Alarko Carrier
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10-4-5. Refrigerant Piping Connection<br />
• Flaring size : A (Unit : mm)<br />
A<br />
CAUTION<br />
KEEP IMPORTANT 4 POINTS FOR PIPING<br />
WORK<br />
1. Keep dust and moisture from entering the<br />
pipes.<br />
2. Tight connection (between pipes and unit)<br />
3. Evacuate the air in the connecting pipes<br />
using VACUUM PUMP.<br />
4. Check gas leak. (connected points)<br />
Flaring<br />
1. Cut the pipe with a pipe cutter.<br />
90˚ Obliquity Roughness Warp<br />
Outer dia. of copper pipe<br />
6.35<br />
9.52<br />
12.7<br />
Fig. 10-4-4<br />
R410A<br />
A<br />
+0<br />
- 0.4<br />
R22<br />
9.1 9.0<br />
13.2 13.0<br />
16.6 16.2<br />
* In the case of flaring for R410A with the conventional<br />
flare tool, pull out it approx. 0.5 mm more<br />
than that for R22 to adjust to the specified flare<br />
size. The copper pipe gauge is useful for adjusting<br />
projection margin size.<br />
10-4-6. Installation<br />
NOTE : For installation, at least 3 dimensions should<br />
be kept free from obstacles (walls).<br />
Fig. 10-4-2<br />
2. Insert a flare nut into the pipe, and flare the pipe.<br />
As the flaring sizes of R410A differ from those of<br />
refrigerant R22, the flare tools newly manufactured<br />
for R410A are recommended.<br />
However, the conventional tools can be used by<br />
adjusting projection margin of the copper pipe.<br />
100mm or more<br />
from wall<br />
600mm or more<br />
600mm or more<br />
100mm or<br />
more from wall<br />
600mm or more<br />
from wall<br />
• Projection margin in flaring :<br />
B (Unit : mm)<br />
B<br />
Rigid (Clutch type)<br />
Fig. 10-4-3<br />
As shown in the figure, hang power cord<br />
and connecting cable downward, and<br />
take out it along piping connection port.<br />
Outer dia. of<br />
copper pipe<br />
6.35<br />
R410A tool used<br />
R410A R22<br />
0 to 0.5 (Same as left)<br />
Conventional tool used<br />
R410A R22<br />
1.0 to 1.5 0.5 to 1.0<br />
Fig. 10-4-5<br />
Fixing bolt arrangement of outdoor unit<br />
9.52<br />
0 to 0.5 (Same as left)<br />
1.0 to 1.5 0.5 to 1.0<br />
600<br />
Suction side<br />
12.7<br />
0 to 0.5 (Same as left)<br />
1.0 to 1.5 0.5 to 1.0<br />
Imperial (Wing nut type)<br />
Outer dia. of copper pipe<br />
6.35<br />
9.52<br />
12.7<br />
R410A R22<br />
1.5 to 2.0 1.0 to 1.5<br />
1.5 to 2.0 1.0 to 1.5<br />
2.0 to 2.5 1.5 to 2.0<br />
365<br />
Diffuser<br />
Fig. 10-4-6<br />
• Secure the outdoor unit with the fixing bolts<br />
and nuts if the unit is likely to be exposed to a<br />
strong wind.<br />
• Use Ø8 mm or Ø10 mm anchor bolts and nuts.<br />
– 81 –
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