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what is puling in n pulling out in flame scanner system?
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Answer Posted / bala
Flame Scnner Basic function- viewing flame in furnace
It has provided in order to avoid unwante boiler trip
Pull in / pull out manual set value from 0 - 100 %
pull in always higher than pull out eg- 40 % & pull out 20 %
when initial flame exceed above 40 % it will consider as
flame
when flame drop drop from 40 - 20 it will consider as flame
when drop below 20 % it will take as no flame signal
the o/p contact flame / noflame will be taken for boiler
safty operation
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