Trimline 70 SL
13
8 CONCENTRIC PATHWAYS
Table of concentric pathways
Pathway
Illustration
X total in metres
Y total in metres
Restriction
x = vertical and y = horizontal
min*
max*
min*
max*
1023
Direct façade outlet G20/25.3/G30
A
0
0
0.5
0.5
No
Indirect façade outlet G20/25.3/G30
B
1
4
0.1
0.5
X – Y > 2 metres: 50mm
Roof pass-through without slope
C
2
9
See provisions
Roof pass-through with 45º slope**
D
3
9
0
4
from X total - Y > 6 metres: 50mm
Roof pass-through with 90º slope***
E
3
9
0
2
from X + X1 - Y > 6 metres: 50mm
45 bend: calculation length 1 metres
90 bend: calculation length 2 metres
* length including roof or exterior wall outlets. Always adhere to a starting length of 1 metre!
** Ratio vertical : horizontal X + X1 + X2: Y ≥ 2: 1
*** Ration vertical : horizontal X + X1: Y ≥ 2: 1
Restriction provisions all gas types
Vertical pathways
Distance
Baffle plate
Restriction
min 2 - 5 m
Yes
50mm
5 - 9 m
Yes
70mm
Direct façade outlet
Direct façade outlet
Yes
No
Y
X
X1
X
X1
Y
X
Y
X
X1
X
X1
Y
X
Y
X
X1
X
X1
Y
X
X
Y
X
A
X
Y
X
B
C
D
E