Vaillant auroTHERM VTK 570/2, Installation Manual

Page: 16 / 44

Installation manual auroTHERM 0020077994_00 16
4.5 Preparing the hydraulic connection
4.5.1 On-roof mounting
Fig 4.11 Passing the pipe through the sarking membrane
If there is a sarking membrane, proceed as follows:
• Make a v-shaped cut in the sarking membrane.
• Fold the upper, wider flap on to the roof batten above,
and the lower, narrower flap on to the roof batten
below.
• Fix the sarking membrane tight to the roof batten.
This ensures that the dampness flows away to the
side.
• With board-clad roofs, cut out a hole with a padsaw.
• Work the roofing felt as described for the sarking
membrane.
4.5.2 Flat-roof mounting
a
Caution!
The roof skin can break and cause leaks!
When installing the roof sealing surfaces, make
sure the roof skin is adequately protected.
• Place large protection mats under the system.
• If the frame is screwed directly, check the sealing of
the building shell.
4.6 Required tools
• Have the following tools ready for assembling the
tube collectors.
Fig. 4.12 Assembly tools: spirit level, cordless screwdriver,
Torx bit (TX30, supplied), allen key 5mm,
socket/combination wrench (13 mm), hammer,
measuring tape / folding rule
5 On-roof mounting
With on-roof mounting, the tube collectors are fastened
to horizontal mounting rails quickly and reliably with at-
tachment clips. To ensure a good adaptation to the dif-
ferent roofings, four different brackets are available:
- Type P for standard concrete tiles (e.g. pantile),
- Type S for extremely high protruding tiles (e.g. Medi-
terranean clay tiles)
- Type S flat (low profile) for flat tiles or slate roofs.
- Stair bolt mounting kit for universal fixing (e.g. corru-
gated slabs, sheet with trapezoidal corrugations, shin-
gles).
a
Caution!
Risk of corrosion!
On roofs made of metals more noble than alu-
minium (e.g. on 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.
When mounted on the roof, the Vaillant tube collectors
in the collector array can be arranged side-by-side or
above each other.
In general, the installation steps and instructions de-
scribed in this manual are applicable to all collector
arrangements.
Any different installation steps are clearly pointed out:
For collectors arranged side-by-side
For collectors arranged above each other
When arranging the collectors, take note in each case of
the possible interconnection schemes in Section 4.4.
4 Before installation
5 On-roof mounting