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Refrigerant piping work 5CSL0-06B
Brazing work should be carried out either downwards or sideways.
An upward direction should be avoided wherever possible(to prevent leakage).
Piping size
6.35
9.52
12.7
15.9
19.1
22.2
25.4
31.8
38.1
44.5
CAUTION
Table 1: Correlation of nozzle tip and size of refrigeration piping
# 200
over 10mm
(Expending pipe brazing)
(Flare part brazing)
N2
N2
over 10mm
(Pipe brazing with socket)
(Butt-brazing)
Nozzle tip No. Brazing filler diameter Ø
# 225 # 250 # 315 # 400 # 450 # 500 1.6 2.4 3.2
1. Generally expending pipe brazing is performed with pan-coil type copper pipe, and socket blazing is
performed with straight copper pipe.
2. Do not perform flare part brazing or butt-brazing.
3. Brazing should be performed on welding table.
4. Any dust should enter in the pipe while brazing.
5. Distance of copper pipe support spacing is within 1~2m
6. The copper pipe should not be secured directly by metal brackets.
296 Guideline for each installation process
N2
N2