Viessmann Vitocell 360-M - Above roof installation with rafter hooks

Horizontal installation
44
B
A
C
D
A
Collector
B
Rafter anchor
C
Mounting rail
D
Tube retainer
Collector supports on pitched roofs
(For rafter anchors in conjunction with collector supports from the flat
roof installation range, see page 108).
On pitched roofs with a low angle of inclination, the collector sup-
ports can be secured to the rafter anchors with the mounting rails.
Check the structural condition of the roof.
10.2 Above roof installation with rafter hooks
General information
Observe the information on securing collectors on page 97.
■ This fixing system is suitable for roofs with standard roof tiles
(except Harz tiles and double-S tiles). It is designed for wind
speeds up to 150 km/h and snow loads up to 1.25 kN/m
2
■ The fixing system comprises:
– Rafter hooks
– Mounting rails
– Clamping brackets
– Screws
■ Guarantees a permanently safe load transmission to the roof
structure. This reliably prevents tile breakages.
■ In conjunction with above roof insulation, secure the rafter hooks
on site.
When doing so, the screws must reach at least 80 mm into the
load bearing wood structure, to ensure sufficient load bearing
capacity.
■ Any unevenness in the roof can be compensated for by adjusting
the rafter hooks.
Criteria for selecting the fixing system:
■ Snow load
■ Roof with or without counter battens
Rafter hook
■ The rafter hooks are fully zinc-plated at high temperature to protect
against corrosion (galvanised, 70 μm coating thickness).
■ On roofs without counter battens, the rafter hooks are mounted
directly on the rafters.
■ On roofs with counter battens, the rafter hook is secured directly
to the counter batten with a support bracket.
FG
B
E
B
Rafter hook
E
Support bracket
Design information regarding installation on pitched roofs — above roof installation
(cont.)
102
VIESMANN
VITOSOL
10
5822 440 GB