Drolet ECO-65, Installation And Operation Manual

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Eco-65 Installation and Operation Manual
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APPENDIX B: FLAME CARACTERISTICS
Efficient flame
An efficient flame should be bright but not too
vigorous. The flame should also have a yellow
to bright look. There should also be some
small embers or spark exiting the flame and
burn pot. The following picture #1 is the flame
pattern that will produce optimum efficiency.
Fire with too much air
A small blow torch flame as in image #2 is a
result of too much oxygen being supplied to
the fire. This causes the flame to be very
short with a bright yellow to almost white,
flame look. This pattern does not allow
optimum heat transfer to the heat exchanger
therefore reducing convection efficiency.
Depending on the quality of the pellets, there
are usually more embers or sparks exiting the
flame and burn pot. To rectify this condition,
reduce combustion air flow to obtain a flame
pattern as in
image #1 .
Fire with not enough air
If the flame pattern is tall, lazy and orange with
black smoky tips as in
image #3, it is
generally a result of insufficient air flow
through the system. The possible causes are
either a lack of oxygen to the fire, high
moisture content pellet, obstructed channel or
vent. This situation will lead to excessive black
soot accumulation on the baffle and the glass.
To rectify this condition, make sure the stove
and the vent system is clean, the pellet being
used is dry and increase combustion air flow if
necessary.
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