Installing the VarioGard system
The VarioGard system may only be installed by duly trained specialist
personnel.
Mechanical installation
VarioGard central unit
Position the central unit in a clearly visibly, easily accessible place.
1 Remove strips from upper part (not fitted before delivery).
2 Undo the four screws on the upper part and remove the upper part (not
fitted before delivery).
3 Remove insulating plate.
4 Fit additional cable entries (optional accessories) if required for electrical
installation.
● The unit is secured with four screws (4 mm) inserted through the housing
– drilling template on page 85.
[ Before finally fitting the upper part, refit insulating plate 3 to ensure
electrical safety !
VarioGard transmitter
The transmitter location should be selected in accordance with the relevant
regulations in such a way that gas in the area under surveillance is detected
by the system reliably and in good time.
– The correct installation location should be selected for maximum
protection. Free circulation of air around the transmitter must not be
obstructed.
– Select the installation location for the transmitter as close as possible to
where leaks are likely to occur:
– to monitor gases or vapours that are lighter than air (e.g. CO, NH
3
),
the transmitter should be positioned higher than the possible leak site.
– to monitor gases or vapours that are heavier than air (e.g. NO), the
transmitter should be positioned as close to the ground as possible.
– Local air flow conditions should be taken into account. The transmitter
should be sited where the highest gas concentration is expected.
– Install the transmitter in a position where there is least risk of mechanical
damage. Fit a grille (optional accessory) if necessary.
Installing the VarioGard system
Mechanical installation
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VarioGard
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