Set-up 4
0020077989_04 auroTHERM exclusive Installation and maintenance instructions
9
4.1.5
Complying with clearances and installation
clearances
Condition
: On-roof installation
▶
In order to install the collectors correctly, you must main-
tain (
→
Page 14)the clearances and installation clear-
ances that are necessary for pitched roofs.
Condition
: Flat-roof installation
▶
When installing the products on flat roofs, maintain a
clearance of at least 1 m from the edge of the roof in
order to avoid particularly strong wind forces along the
edge of the roof.
4.1.6
Selecting suitable connection
▶
Observe the planning information when designing the
flow rate for the array (if available).
▶
Select the appropriate connection for the collectors.
▶
Ensure that the solar fluid flows through the collectors
either from left to right or from right to left.
Condition
: Number of
VTK 1140/2
collectors: 1 … 7
max. 7 x VTK 1140/2
▶
Switch up to 7
VTK 1140/2
units in series (according to
the 14 m
²
aperture surface area).
Condition
: Parallel connection, aperture surface area:
≤
7 m
²
▶
Always connect as many collectors as possible in series,
even when several collector rows are arranged on top of
each other.
Note
Up to an aperture surface area of 7 m
²
(accordingly for 3 pcs
VTK 1140/2
+ 1 pc
VTK 570/2
), you must switch the collectors in
series.
Condition
: Parallel connection, aperture surface area:
≥
14 m
²
▶
Set up several parallel collector rows and connect these
hydraulically in parallel.
▶
Always connect as many collectors (at least 7 m
²
) as
possible in series.
