Roof Anchor Installation - Vaillant auroTHERM VFK 125 Installation Manual

6.2

Roof anchor installation

a Caution!
Risk of corrosion!
On roofs made of metals more noble than alu-
minium (e.g. copper roofs) galvanic corrosion
can occur at the anchor points, whereby the at-
tachment of the collectors is no longer guaran-
teed. Ensure that the metals are separated by
suitable underlays.
• First of all, define the required number of roof an-
chors based on Table 6.1.
Number of Elevation [m]
collectors up to
700
900
1
1200
700
2 900
1200
700
3 900
1200
700
4 900
1200
700
5 900
1200
700
6 900
1200
700
7 900
1200
Field of application according to EN 1991 T 1-3
Anchor Fmax: type S / type P 1.875 kN
Wind load: based on the design loads according to EN 1991 T 1-3, the following minimum distances among collectors must be respected:
1. The smallest value of 1/10 of the building length (eaves length) or 1/5 of the building heigth with respect to eaves and ridge.
2. The smallest value of 1/10 of the building width (gable width) or 1/5 of the building height with respect to side edges.
If extension kits are used, make sure that the roof hooks are positioned in the middle at equal distances. With an elevation above
900 HH [m] and roof angles below 40°, starting from snow load zone 2 a specific static calculation must be made.
Table 6.1 Number of required roof anchors
Installation manual auroTHERM 0020057143_04
5 4
10° 40° 10° 40°
4 4 4 4
4 4 4 4
4 4 4 4
8 8 8 8
8 8 8 8
8 8 8 8
12 12 12 12
12 12 12 12
12 12 12 12
16 16 16 16
16 16 16 16
16 16 16 16
20 20 20 20
20 20 20 20
20 20 20 20
24 24 24 24
24 24 24 24
24 24 24 24
28 28 28 28
28 28 28 28
28 28 28 28
On-roof mounting 6
Snow load zone
3 2
Roof angle from:
10° 40° 10°
4 4 4
4 4 6
6 4 8
8 8 8
8 8 12
12 8 16
12 12 12
12 12 18
18 12 24
16 16 16
16 16 24
24 16 32
20 20 20
20 20 30
30 20 40
24 24 24
24 24 36
36 24 48
28 28 28
28 28 42
42 28 56
1
40° 10° 40°
4 4 4
4 6 4
6 8 6
8 8 8
8 12 8
12 16 12
12 12 12
12 18 12
18 24 18
16 16 16
16 24 16
24 32 24
20 20 20
20 30 20
30 40 30
24 24 24
24 36 24
36 48 36
28 28 28
28 42 28
42 56 42
GB
17