E90-803-001-005-01 – Rev 4
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Pressure
gauge port
Oil pressure
adjuster
Air damper locking screw
Air adjuster
Normal operating mode
Check the oil pressure on the gauge and adjust if necessary for the required burner output.
From a suitable test point on the boiler, or in the flue, a smoke reading should be taken to ensure clean smoke-
free combustion.
With the aid of a flue gas analyser, and by making adjustments to the air adjuster, the combustion can be set for
maximum efficiency (see diagram).
The air control rotates and is locked
in place by the air damper locking
screw.
A CO
2
level of around 11.0% - 12.0%
should be achievable.
If at any point during normal
operating mode the photocell loses
sight of the flame the control box
will attempt to re-establish the
flame. The oil valve will close and
the ignition transformer will be
powered. A pre-purge will be carried
out before the valve is re-opened
and the fuel is released. If successful
the burner will continue in operating
mode; if not the control box will go
into lockout mode.
After commissioning a safety check
must be carried out to ensure the
correct operation of the flame
detection.
During normal operation the
photocell is to be removed and
either covered with a clean rag to
prevent any light from being sensed,
or for the cell to be unplugged. As
soon as this happens the burner will
attempt to re-establish the flame
IMPORTANT: The photocell side
opening must be pointing at the
flame for reliable operation.
Photocell
