New to gas heat

Tom_53

for responding,Timmie i plan on having someone follow me up on this call. Thank you Scott and others for your response. There is plenty of air, not in a confined space. As far as temperature, it is a cold start boiler with 2 small loops. 3/4 copper.
From Jack

Tom_53

Flame adj. ?

Iam new to gas heat. Sevice call for no heat.The rollout switch was bad & the flame was backing up into the cabinet of this Slant Fin boiler. So i cleaned the sections from top & bottom replaced the switch turned it back on & it is fine. Now my qestion, why did it make all this black soot?This is a hot water boiler controled by s8600,natural gas.

Thanks
From Jack

Scott G.

Many possible causes...

1. Is the boiler subjected to temps below 135* F. for long periods during operation?
2. Is there adequte combustion air in the mechanical room?
3. You need to provide more info.
4. MOST IMPORTANTLY... proceed with cause... for nat. gas to soot, yes you have problems... Scott G.

Unknown

Have a professional check your boiler

there is definitely something wrong anytime a piece of equipment oil or gas soots up. The danger of possible carbon monoxide should prompt you to call a pro and have them go right through the system. Where are you located? I am sure that someone on this site is perhaps near you and can assist you. If nothing else call your gas supplier.

jeff_25

soot

Jack, I once had a slaint fin boiler do the same thing so bad had to use a hose and water to clean it found a bad burner found it by were your sun glasses or welding goggels to look at the flame to see if good or bad same as torch good luck jeff had to put in new ribbion burners

ed wallace

gas heat

just cleaned gas boiler found problem was gas valve replaced
last winter installer never checked the output of valve
came from factory set wide open unit sounded like a 747
revving its engines and lots of back pressure

Unknown

Whar kind of gas valve

was this. Was it a residential or commercial valve. I am curious as to how the valve was set wide open. Are you referring to the regulator adjustment being screwed all the way down giving excessive pressure?

ed wallace

gas valve

timmie it was a honeywell 8600 series 24 volt the pilot flame was perfect every time the valve opened it was like a 747 was in the basement had to adjust the main pressure on valve

Unknown

Second time recently

with a Honeywell VR8300 series gas valve that out of the box was set to maximum pressure on the regulator. One of my students about a month ago brought this up and said that two other valves his company had in stock had the same problem. Honeywell responded that this was not something they had heard of and that they felt someone after production had done this. Something to keep an eye out for.