TM MINI C VRF 8 12KW

104
3
3.1
Refrigerant piping design should take account of the following considerations:
The amount of brazing required should be kept to a minimum.
On the two inside sides of the first indoor branch joint ( A in Figures 3-3.4 and - ) the system should, as far
as possible, be equal in terms of number of units, total capacities and total piping lengths.
3.2
Only seamless phosphorus-deoxidized copper piping that complies with all applicable legislation should be used. Temper
grades and minimum thicknesses for different diameters of piping are specified in Table 3-3.1.
Table 3-3.1: Piping temper and thickness
Piping outer diameter
(mm)
Temper
1
Minimum thickness
(mm)
O
(annealed)
0.8
0.8
0.8
1.0
1.0
1/2H
(half hard)
1.2
1.2
1.3
1.8 1.5
1.5
41.3 1.5
1.5
1.8
:
1.
2.
3.3
-
- -
Figure 3-3.1: The first connecting method