Fire Keeps Going Out

Hello all i have a EFM high boy that works great but every time it's hot and humid or just humid out I come home to no fird and a ash pit full of unburnt coal any suggestions will help I'm about ready to rip it out and put a Df 520 in was out three times this week including today again

Calm down, let's not do anything hasty. I don't think installing a DF520 will help your situation, the Hi Boy is a better boiler, the stoker is basically the same.

Do you have a draft gauge and what are your aquastat and timer settings?

Most likely, you are loosing your draft in the hot humid weather. This can be compounded by having no heat load causing skipped timer cycles due to boiler temp at the high limit.

If you spread your HI and LO limit, say, LO = 140 and Hi = 180, you can decrease the chance of missing timer cycles. Run at least 2 minutes every 30 minutes on the timer.

-Don

My limits on triple aquastat are 190 175 with a the differential at 15 manometer at 2 feed at 4 air at just under 5 we were home all day wife did lots of laundry making it run went out for dinner came home to no fire

Thanks stoker don my timer settings are 1 minute every half hour

If you still have problems, I would back the LO limit down to 150 or 160. I would also back the air down between 4 and 4.5.

-Don

I am surprised you are not having more issues. Your aquastat settings are too close to one another, the feed is too low, and the timer setting is too short.

Set the stoker at 4 teeth and 4.5 air. Adjust the rest as follows:

160 low
200 High
10 diff.

2 minutes every half hour on the timer.

Thanks Rob R and Stoker Don have it set as Rob and Don said we will see if it's lit when we get home tonight hopefully it's ok

So far so good the efm stayed lit since Saturday evening thanks for the advice

You're welcome.

A spring cleaning (boiler and smoke pipe) also helps with running through the summer.

Thanks I did that Saturday before I built a fire wasn't to dirty one ash can of dirt usually get two it needed to be done nothing like cleaning your boiler at. 11 pm on a Saturday night thanks again for the advice