Vaillant auroTHERM VTK 570/2, Руководство по установке

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Installation manual auroTHERM 0020077994_00 22
5.2.3 Hanger bolt fixing kit
a
Caution!
Before installation check the load-bearing ca-
pacity of the wooden substructure!
If necessary, strengthen it.
Only for use on roof structures with timbers
large enough to accept stair bolt.
1
2
3
5
4
6
Fig. 5.8 Fixing with stair bolt
1. Bore a hole in the roof covering in the corresponding
position. For distances please see Tab. 5.1 and 5.2.
2. Tighten the stair bolt to the rafters through the pan-
tile.
3. Screw the lower nut against the roof covering, and
tighten it until the seal sufficiently seals the opening.
4. Position the central nut so that after inserting the an-
chor upper part the front contact area is on the roof-
ing. Take note of the correct positions of the upper,
central and lower brackets when doing this
(see Fig. 5.3).
5. Screw the second nut and tighten it (17 mm).
6. Cut off the threaded bolt directly above the nut.
Deburr the interface.
5 On-roof mounting