Lightning Protection; Frost Protection; Installation 4; Before Installation - Vaillant auroTHERM VFK 145 H/V Installation Manual

3.4

Lightning protection

a Caution!
Damage from lightning!
If the installation height is more than 20 m or
if the collectors are projected above the roof
ridge, electro-conductive components must be
connected to a lightning protection device!
3.5

Frost protection

a Caution!
Damage due to frost!
Under no circumstances should water on its
own be in the collector if there is a danger of
frost!
After pressurisation and flushing, the collectors
may contain water residues.
Immediately fill the solar system with solar
fluid. Check the fluid concentration with a frost
protection tester. Water remaining in the solar
circuit may dilute the fluid.
Installation manual auroTHERM 0020057148_03
Safety instructions 3
4 Installation
4.1

Before installation

Please note the following instructions before and during
installation:
Danger!
d
Risk of death from falls and falling objects!
Observe the national regulations for working at
heights.
Wear the Vaillant safety belt
(article number 302066).
d Danger!
Risk of death from falls!
During installation never step on the cover
plate. It might break due to an excessive load.
Danger!
H
Danger of burning and scalding!
In case of solar irradiation inside the units, col-
lectors can reach 200 °C. Remove the sun pro-
tection film installed at the factory only after
the solar energy system has been started up.
Caution!
a
Collectors may be damaged by incorrect stor-
age!
Always store the collectors in a dry place and
protected from the elements.
Caution!
Roof construction damage due to missing rear
roof ventilation!
There must be roof back ventilation in accord-
ance with regulations.
Caution!
System error function due to air bubbles!
To fill the system, use the fill trolley
(article number 0020042548) to avoid air
bubbles.
Use the manual air vent installed on the collec-
tor field.
Alternatively, install the Vaillant solar
automatic air vent (article number 302019) in
the highest point of the system or the auto-
matic de-aerator (article number 302418) in
the solar circuit. Observe the relevant installa-
tion and operating manual.

Installation 4

GB
5