Room Sealed Fan Assisted Operation
Table 5
The restrictors for
60/100 mm concentric ducts
(mm)
In the use of
80/125 mm concentric ducts,
- up to 2 m length, the same restrictors (shown in Table 5) should be used
- between 2m and 8m, no restrictor should be used.
a)
b)
c)
Sample connections by
60/100 mm vertical concentric ducts
fig. 17
18
Product
Elbow
L (m)
L
max
(m)
restrictor
PRP 24 HM
1x90
0
≤ 1
3
47
1x90
0
1< ≤ 2
49
0
1x90
2< ≤ 3
-
2x90
0
≤ 1
2
49
2x90
0
1< ≤ 2
-
3x90
0
≤ 1
1
-