Regulations, Guidelines, Safety
Regulations, Guidelines, Safety
3.2.3 Risk of Freezing
If the unit is at risk of freezing, it is necessary to be kept operational in conservation
mode (at minimum) and all radiator valves should be kept open. If you cannot heat
during freezing periods, turn off the system and empty the boiler, the warm water
storage tank and the radiators. The boiler must be secured against accidental activa-
tion when empty.
3.2.4 Relief Valve
The condensing gas boiler comes with a 2.5 bar relief
valve. The opening of the spring-loaded membranous
relief valve must be in a frost free area and must be eas-
ily accessible. The blow off pipe on the relief valve must
be implemented without the possibility of increasing
pressure while responding to the relief valve. Leaking
heater water should be safely siphoned off.
Operational readiness of the relief valve should be
checked from time to time.
Fig. 4 Relief Valve
3.2.5 Aspirator
To ventilate the boiler with water in it, the
aspirator cap on the top of the unit must be
open by turning it two rotations to the left.
Fig. 5 Manual Quick-Aspirator
An additional automatic aspirator can be
found under the pump casing. This may
only be set by a licensed professional.
Fig. 6 Automatic Quick-Aspirator
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Gebr. Bruns GmbH is not responsible for typographical errors or technical inaccuracies and reserves the right to make adjustments.
Gebr. Bruns GmbH
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Hauptstraße 200
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26683 Saterland
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Tel.: + 49 (0) 44 92 / 92 46-0
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Fax: + 49 (0) 44 92 / 71 41
www.bruns-heiztechnik.de
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