19-07-05
Page 16 of 20 Operation Instructions for Jervois Freestanding Gas Heater March 2002
Soot is being
deposited on glass
or logs.
There is insufficient
secondary air in the
combustion chamber.
The logs are not properly
positioned.
Incorrect gas pressures.
Check the back of the heater for
blockages around the air intake slots.
Check that the clearances around the
heater match those stated in this
manual.
Ensure that the front log set is siting
flat with no bark chips under it and that
the locating pins are in their holes.
Check that the back log is sitting on its
brackets.
Check and set gas pressure to
manufacturers specifications.
Main burners
extinguishing.
Flue down draughting.
Flueway blocked
Pilot flame is not large
enough.
Severe down draught.
This is caused by a vacuum in the
room.
Turn off heater. Turn off all air
conditioners, expelair fans, other
heaters etc. Open doors and windows
to allow pressure to equalise. Re-light
heater.
Close doors and windows but not
completely.
Remove blockage.
Check that pilot assembly is correctly
mounted and that the pilot burner
flame hood directs the pilot flame over
both burners and the thermocouple.
If the flame pattern is disturbed during
extreme winds then ensure a
recommended flue cowl has been fitted
and is still in place.
