Brazing work should be carried out either downwards or sideways.
An upward direction should be avoided wherever possible(to prevent leakage).
Table 1: Correlation of nozzle tip and size of refrigeration piping
Nozzle tip No.
Brazing filler diameter Ø
# 200
Ø6.35(1/4)
Ø9.52(3/8)
Ø12.7(1/2)
Ø15.9(5/8)
Ø19.1(3/4)
Ø22.2(7/8)
Ø25.4(1)
Ø31.8(1-1/4)
Ø38.1(1-1/2)
Ø44.5(1-25/32)
# 225
# 250
# 315
# 400
# 450
# 500
1.6(1/16) 2.4(3/32) 3.2(1/8)
Piping size
over 10(3/8) mm(inch)
(Butt-brazing)
(Flare part brazing)
(Pipe brazing with socket)
(Expending pipe brazing)
over 10(3/8) mm(inch)
N
2
N
2
N
2
N
2
[Unit:mm(inch]
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(3.28)~2(6.56) m(ft)
6. The copper pipe should not be secured directly by metal brackets.
CAUTION
2. Guideline for each installation process
12
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Heat pump 60Hz/R410A
Installation of
Outdoor Units
SINGLE ZONE
