15
12. MAINTENANCE
12.1 General
It is essential for a good combustion, to clean the boiler,
the gas train and boiler room once a year.
12.2 Maintenance instructions
1. Clean the internal flue ways of the boiler (cast iron
sections) with a steel cleaning brush (available from
Broag). Remove top casing and the top of the flue
hood.
2. Clean (if necessary) the aluminium economiser.
If it is not too dirty (normal deposition of dust) it is
best be cleaned with water, which can be hosed into
the top of the economiser. This water can be drained
down through the condensate drain. If it is badly
fouled, it should be cleaned by using the nylon clea-
ning brush. In that case, remove the rear panel and
then the intermediate panel. Clean the aluminium
pipes using the special nylon cleaning brush (avai-
lable from Broag). Clean the condensate collector.
Never use the nylon brush for the cast iron sec-
tions and the economiser.
3. Remove the lit of the siphon trap and clean it.
4. Clean the burners internally and externally.
5. Clean the floor underneath the boiler and boiler room.
6. Clean boiler casings.
7. Clean the gas train, ignition, pilot burner, thermostats
and wiring.
8. Check start program, ignition time and safety times.
9. Check flame protection and thermostats.
10. Check boiler input.
11. Check the combustion efficiency.
12. Check the boiler and installation for water leakage
(seals).
13. Check gas train and gas pipe for gas leakage.
