EDM SYSHP MINI SPLIT 06 16

Table Of Contents
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Figure 3-3.2: Expanding copper piping ends
Table 3-3.3: Flared opening size ranges Figure 3-3.3: Flared opening
3.5.3 Expanding copper piping ends
Notes for installers
Ends of copper piping can be expanded so that another length of piping can be inserted and the joint brazed.
Insert the expanding head of the pipe expander into the pipe. Aer compleng pipe expansion, rotate the copper pipe a
few degrees to recfy the straight line mark le by the expanding head.
Cauon
Ensure that the expanded secon of piping is smooth and even. Remove any burrs that remain aer cung.
3.5.4 Flared joints
Flared joints should be used where a screw thread connecon is required.
Notes for installers
Before aring 1/2H (half hard) piping, anneal the end of the pipe to be ared.
Remember to place the are nut on the piping before aring.
Ensure the ared opening is not cracked, deformed or scratched, otherwise it will not form a good seal and refrigerant
leakage may occur.
The diameter of the ared opening should be within the ranges specied in Table 3-3.3. Refer to Figure 3-3.3.
Pipe (mm) Flared opening diameter (A) (mm)
Ф6.35 8.7 - 9.1
Ф9.53 12.8 - 13.2
Ф12.7 16.2 - 16.6
Ф15.9 19.3 - 19.7
Ф19.1 23.6 - 24.0
When connecng a ared joint, apply some compressor oil to the inner and outer surfaces of the ared opening to facilitate
the connecon and rotaon of the are nut, ensure rm connecon between the sealing surface and the bearing surface,
and avoid the pipe becoming deformed.