Download Black Box AC096A Technical data

Oxygen Depletion Pilot System
The pilot light and flame sensing device fitted to this fire is also an
atmosphere sensing device. If for any reason any part of the pilot assembly is
to be replaced ALL the assembly including the pilot burner, thermocouple, and
electrode must be exchanged complete for an original manufacturer's pilot
assembly only. This atmosphere sensing device is not adjustable and must
not be put out of action. The pilot light shuts off both the main burner and
pilot if evacuation of the combustion products is interrupted. If the fire shuts
itself off, do not use the fire, and have the flue and fire checked by a suitably
qualified person.
Spark Failure
For the fire to operate consistently the gap on the pilot assembly is critical.
See image above.
Page 31 of 56