4 Set-up
14
Installation and maintenance instructions auroTHERM exclusive 0020077989_04
4.2.2
Determining the number of required roof
anchors
1.
Ask the local building authority for the regional max-
imum snow load s
k
.
Condition
: Maximum snow load:
≤
3 kN/m
²
▶
Install 4 roof anchors per collector.
Condition
: Maximum snow load: 3 … 4.5 kN/m
²
▶
Install 6 roof anchors per collector.
Condition
: Maximum snow load: > 4.5 kN/m
²
▶
Compile statistics for the individual case.
▶
Ensure that the maximum permissible snow load per
collector is 5.4 kN/m
²
.
Note
The maximum permissible load per roof an-
chor type S/type P is: F
max.
= 1.875 kN.
2.
If you are using extension sets, ensure that the roof
anchor is positioned centrally with equal clearances.
4.2.3
Defining the edge clearances of the roof
anchors
Maximum lift points caused by wind loads can occur at
the cut-away edges of wall and roof areas (e.g. verge and
eaves). These maximum lift points result in high loads on the
collectors and installation systems.
Areas in which lift points occur are called edge areas. Corner
areas are zones in which edge areas overlap and especially
high pull forces occur.
Edge and corner areas must not be used as installation
areas.
e
2
e
1
h
b
l
b
Building width
h
Building height
l
Building length
e1
Edge clearance e
short
e2
Edge clearance e
long
▶
Calculate the building width w, building height h and
building length l.
▶
The values for the side edge clearances that are to be
observed can be found in the following table:
b
[m]
h [m]
5
6
7
8
9
–
15
8
–
10
1.0
11
1.0
1.1
12
1.0
1.2
13
1.0
1.2
1.3
14
1.0
1.2
1.4
15
1.0
1.2
1.4
1.5
16
1.0
1.2
1.4
1.6
17
1.0
1.2
1.4
1.6
1.7
18
1.0
1.2
1.4
1.6
1.8
▶
The values for the edge clearances that are to be ob-
served to the roof ridge can be found in the following
table:
l
[m]
h [m]
5
6
7
8
9
10
–
15
10
1.0
11
1.0
1.1
12
1.0
1.2
13
1.0
1.2
1.3
14
1.0
1.2
1.4
15
1.0
1.2
1.4
1.5
16
1.0
1.2
1.4
1.6
17
1.0
1.2
1.4
1.6
1.7
18
1.0
1.2
1.4
1.6
1.8
19
1.0
1.2
1.4
1.6
1.8
1.9
20
1.0
1.2
1.4
1.6
1.8
2.0
▶
When installing the roof anchors, observe the calculated
edge clearances.
4.2.4
Defining the roof anchor clearances
1.
Define the clearances of the roof anchors using the
following table:
Quantity
A
B
C
D
E
VTK
570
VTK
1140
‑
1
1663 * /
1638 **
100
–
200
VTK
1140:
997
–
1197
—
VTK
570:
507
–
607
1397
Two rows:
3322
—
Three
rows: 5006
‑
2
2794
‑
3
4191
‑
4
5588
‑
5
6985
‑
6
8382
‑
7
9779
1
1
2104
1
2
3501
1
3
4898
1
4
6295
1
5
7692
1
6
8382
