Annual Maintenance
The following items should be checked for correct operation
and cleaned where necessary:
Fan unit, draught stabiliser flap thermostat, air control
flap, secondary air duct(s) and clinker ram mechanism.
All air and flue sealing joints should also be inspected
and replaced or made good as necessary.
Safety Switch
Check for fly-ash deposits in the flue opening at the back
of Safety Switch. Remove draught-stabiliser and insert a
small bottle brush into hole to clear out any deposits.
This hole is provided to allow cool air from the room to be
drawn over the Safety Switch during normal operation of
the boiler but also allow hot gases to be blown out in the
event of a flue- or chimney blockage. It is therefore
important for the hole to be kept clear at all times for cor-
rect operation of the Safety Switch.
Cleaning Tool
A special scraper is provided for cleaning boiler flue-ways.
Warning:
Before re-lighting and in particular at the start of the heating
season or after a period of shut down it is important to
check that the boiler flue-ways, flue-pipe and chimney
have not become obstructed by a fall of deposits or are
blocked in any other way. Seek professional advice if in
doubt.
5. SERVICING
IMPORTANT: ISOLATE ELECTRICAL SUPPLY TO THE
BOILER BY REMOVING THE MAINS SUPPLY PLUG
To maintain the boiler’s thermal efficiency and reliable
operation, it should be serviced annually by a qualified
engineer.
ELECTRICAL WORK SHOULD BE CARRIED OUT BY
A QUALIFIED ENGINEER.
If the boiler is used to provide central heating and hot
water all year round, the best time for its annual service
is just before the start of the heating season. Where the
boiler is shut down for the summer months, the service
should be carried out as soon as possible after the end
of the heating season.
Boiler Flue Cleaning
To maintain the high thermal efficiency of the boiler and
to avoid the possibility of
DANGEROUS GASES
being
emitted, it is necessary to keep the internal flue-ways
clear by scraping off deposits at regular intervals - weekly
in Winter and according to usage in Summer.
Important: Always ensure the special scraper provided is
pushed down the full depth of flue-ways to stop position on
shaft. This gives a positive indication the flue-ways are clear.
Access for cleaning is gained by lifting off top casing and
removing draught-stabiliser on the TRG 45 and 60, hinging up
draught stabiliser on the TRG 80.
Any loose fly ash deposits in the flue outlet should be
removed from the boiler rather than brushed down the flue-
ways where they could smother the fire.
Before cleaning the flue-ways ensure a bright fire exists,
then switch fan “OFF”.
Remember to switch fan “ON” after cleaning.
Chimney and Flue Pipe Cleaning
The flue pipe and any bends should be cleaned every 3
months and the chimney swept annually.
Note: In areas subject to heavy rain, it is recommended
that the chimney is swept twice a year.
Air Tightness
Always ensure that the fire door and hopper lid/chute are
securely latched and air tight, otherwise the boiler will not
give its full output and furthermore overheating may
occur during “idling” conditions.
Shutting Down
When shutting down boiler for a prolonged period the
following procedure should be carried out:
a. Switch off electrical supply.
b. Remove all fuel from hopper and fire box.
c. Thoroughly scrape all deposits from the flue-ways,
hopper and fire box.
d. Empty ashpan.
e. Leave fire door and hopper lid/chute partially open to
ensure good ventilation through the boiler.
f. As a further safeguard against corrosion it is a good
plan to coat the internal surfaces with an anti-corrosion
treatment.
8
