Heat pump 50Hz/R410A _ 12
2. Guideline for each installation process
Part 3 Design and installation
Brazing work should be carried out either downwards or sideways.
An upward direction should be avoided wherever possible(to prevent leakage).
over 10mm
(Butt-brazing)(Flare part brazing)
(Pipe brazing with socket)(Expending pipe brazing)
over 10mm
Table 1: Correlation of nozzle tip and size of refrigeration piping
Nozzle tip No.
Brazing filler diameter Ø
(Unit : mm)
# 200
Ø6.35
Ø9.52
Ø12.7
Ø15.9
Ø19.1
Ø22.2
Ø25.4
Ø31.8
Ø38.1
Ø44.5
# 225 # 250 # 315 # 400 # 450 # 500 1.6 2.4 3.2
Piping size
N2N2
N2N2
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.
CAUTION
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