Appendix C: Flame Caracteristics - Enerzone EUROSTAR Installation And Operation Manual

APPENDIX C: 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 is the flame pattern that will produce optimum efficiency.
Fire with too much air
A small blow torch flame as in the image below 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 exchanger therefore reduces 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 the image above.
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