Daikin VRV Plus Series General Information Manual page 24

Si33-003.book Page 20 Monday, June 25, 2001 9:06 AM
Installation
c) Brazing
The Multi-System requires only copper/copper jointing and the jointing method is explained below.
The R-407C Plus Series uses a wide range of piping sizes. You should therefore be careful when selecting
the nozzle tip. If a small nozzle tip is used for brazing piping of large diameters such as φ38.1 and φ44.5,
brazing flow becomes poor.
Table 1: Correlation of nozzle tip and size of refrigeration piping
# 200
6.35
9.53
12.7
15.9
19.1
22.2
25.4
31.8
38.1
44.5
Note: The values in the table above are for type B torch (French).
20
The use of "hard solder" is essential.
Nozzle tip No.
# 225 # 250 # 315 # 400 # 450 # 500
: http://splitoff.ru/tehn-doc.html
SiE33-003
Brazing filler diameter φ
1.6 2.4 3.2
(V0977)
General Information