A
ar22
Thanks to all of you, I have found this thread very inlightening and has brought up a lot of questions for me
I always use a smoke tester as I am scared of wrecking my analyser if its a smoky pig, if I get smoke to 0 by gradually increasing the air and taking a smoke 3 - 4 times, I am sure its not too weak (still a 0 smoke). I finish with the analyser and more often than not a slight tweak get it to 11-11.5 CO2
with reference to winter/summer settings, it to me all depends on where the boiler draws its air, if its in a small boiler house sitting outside or using a balanced flue I am wary of outside temperatures if its very very cold, but if its in the front corner of a warm garage then I feel the weather has little effect. Engines run weak in the cold weather and rich in the summer, its all to do with the density of air etc etc but as Best says these boilers are not too sophisicated and it would have to be extreme weather conditions
I am very preoccupied by 2 readings,
1. smoke to 0 having brought it down from 1 or 2 ish so as not to be too weak
2. CO2 to be ideally 11.5
if these two readings are present I am happy
but having read this thread others seem to be interested in CO and excess air
what are the holy grail of settings if all was perfect
smoke 0
excess air ?
co ?
co2 11.5
o2 ?
which is the most important ? as in reality the only two variables present are fuel and air, so not all of the FGA readings could be individually modified without effecting another
many thanks
I always use a smoke tester as I am scared of wrecking my analyser if its a smoky pig, if I get smoke to 0 by gradually increasing the air and taking a smoke 3 - 4 times, I am sure its not too weak (still a 0 smoke). I finish with the analyser and more often than not a slight tweak get it to 11-11.5 CO2
with reference to winter/summer settings, it to me all depends on where the boiler draws its air, if its in a small boiler house sitting outside or using a balanced flue I am wary of outside temperatures if its very very cold, but if its in the front corner of a warm garage then I feel the weather has little effect. Engines run weak in the cold weather and rich in the summer, its all to do with the density of air etc etc but as Best says these boilers are not too sophisicated and it would have to be extreme weather conditions
I am very preoccupied by 2 readings,
1. smoke to 0 having brought it down from 1 or 2 ish so as not to be too weak
2. CO2 to be ideally 11.5
if these two readings are present I am happy
but having read this thread others seem to be interested in CO and excess air
what are the holy grail of settings if all was perfect
smoke 0
excess air ?
co ?
co2 11.5
o2 ?
which is the most important ? as in reality the only two variables present are fuel and air, so not all of the FGA readings could be individually modified without effecting another
many thanks
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