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12 Upkeep and maintenance
In compliance with DIN 4755 and DIN 4756 each gas-
heating system must be inspected at least once a year by
a representative of the manufacturer or another qualified
specialist so as to guarantee proper operation, safety
and economic use. This inspection should also comprise
inspection, and if necessary, adjustment of the calorific
value. It is recommended to open a maintenance
contract. The boiler room must be clean, dry and well-
ventilated. In accordance with the fuel used, the boiler
must be cleaned with regular intervals, at least once a
year before the start of the heating season.
– Switch main „on/off switch“ to „off“
– Shut gas stopcock
– Remove front and top cover.
– Check whether cleaning of the waste gas flue is
necessary by removing the observation hole lid of the
flow safety device. Remove the flow safety device if
the waste gas flue is to be cleaned.
– Unscrew the gas pipe joint over the gas valve and the
screws of the burner bed and pull out burner in
forward direction.
– Clean burner. In the event of heavy build-up of dirt use
a mild detergent.
– Clean ignition burner and ignition burner nozzle.
Attention! Do not widen the nozzle opening.
– Clean combustion chamber and waste gas flue with
brush provided.
– Clean and reinstall the protective sheet under the
burner.
– Check the proper position of the ignition spark plug.
The ignition spark plug is of utmost importance if
proper ignition and trouble-free operation of the
burner is to be ensured. The standard size must
be checked during the maintenance work (see
Fig. 8).
Fig. 8
– Mount burner. Secure the gas pipe joint over the gas
valve and the burner sheet screws.
– Reconnect the electrical connection
– Mount lid to the observation hole of the flow safety
device, install flow safety device if removed and
secure properly. Please ensure that the gasket does
not get damaged.
– Mount top cover.
– Inspect gas conducts for leakages.
– Carry out functional check on all control and safety
devices (see Fig. 9).
Fig. 9
– Mount front cover.
– Open gas stopcock, switch „on/off switch“ to „on“ and
check calorific values.
– A damp cloth (with a mild detergent) will suffice to
clean the cabinet. Never use abrasive or solvent
containing cleaning agents.
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