Preparing For Installation Dimensions; Horizontal Distribution Of Rafter Flanges - Viessmann Vitosol-F Installation Instructions For Contractors

Dimensions

Horizontal distribution of rafter flanges

A specific number of rafter flanges is allocated to each
number of collectors.
A specific number of rafters need to be used for fitting
the rafter hooks. This number depends on the rafter
spacing.
Type SV (vertical collectors)
The following tables detail the rafters on which 2 rafter
flanges respectively should be fitted. Here, the last
digit indicates the number of rafters required.
1 collector
2 rafters are required for all snow loads.
2 collectors
Rafter spacing in mm
600
≤
700
≤
800
≤
3 collectors
Rafter spacing in mm
600
≤
700
≤
800
≤
4 collectors
Rafter spacing in mm
600
≤
700
≤
800
≤
6
2
Snow load in kN/m
0.75
≤
1, 4
1, 3
1, 3
Snow load in kN/m 2
0.75
≤
1, 4, 5, 6
1, 3, 4, 5
1, 3, 4
2
Snow load in kN/m
0.75
≤
1, 4, 5, 8
1, 3, 4, 6
1, 3, 4, 6
Example:
■ 2 collectors type SV
■ Rafter spacing a 600 mm
■ 2
Snow load 0.75 N/m
Look up the combination in the table for 2 collectors on
page 6 (highlighted grey):
Of the 4 rafters, the following are used:
Rafters 1 and 4
A
=
Fig. 1
Rafter flange position
A
Mounting rails
B
1.25
≤
1.25
≤
1.25
≤
B
=
1, 2, 4
1, 2, 3
1, 2, 3
1, 3, 4, 6
1, 2, 3, 4, 5
1, 2, 3, 4
1, 3, 4, 5, 7
1, 3, 4, 6
1, 2, 3, 4, 5, 6