Carry out a general inspection of the boiler for dirt
and dust and clean as necessary.
Visually inspect the complete heat engine for its
general condition and for signs of corrosion, sooting
or other forms of damage. If damage is evident
proceed to column 2.
Measure the gas flow rate during operation with
maximum load (Kap. 5.9.2). If the gas flow rate
complies to the Table 5.1 continue with column 1, if
not proceed to column 2.
Check the gas inlet working pressure (Kap. 5.9.3)
operation with maximum load. If the gas inlet
working pressure complies to the Table 5.2 continue
with column 1, if not proceed to column 2.
Check combustion by measuring CO, CO2and
CO/CO2. If the values are outside the tole rances of
Table 7.1 proceed to maintenance column 2. You
must not proceed with the maintenance if a new
burner door seal kit is not available.
Isolate the boiler from the power mains. Check
whether the electrical plug connections and the
other electrical connections are fitted tightly and
correct them if necessary.
Close the gas isolator cock and the service valves.
Remove the compact thermal module.
Check the integrity of all combustion circuit seals,
especially the burner door seal. If there are any
damages repair them before proceeding.
Clean the heat exchanger.
Check whether the burner is dirty and clean it if
necessary.
Check the condensate siphon in the boiler, clean
and fill if necessary.
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