boiler pressure

[slonergan82]

What is the proper way to set a boiler water pressure regulator. I thought you set it at 12 - 15 when the boiler is cold and the pump isnt on. Is this correct? My father has a boiler and right now I have the power shut off and the water makeup hand valve open. I will check to see what the presssure is tomorrow. and make adjustments from there. any thoughts.

[Senior Tech]

Thoughts...yes, call a pro before you go boom.

[slonergan82]

I am a licenced gas tech and refrigeration mechanic. I just dont have much experience with hydronic heating. Any help would be great.

[Jims understudy]

the fill valve will automatically keep the boiler pressure at 12 lbs at least b&g valves do,too much pressure will cause relief valve to pop,you need a tech!

[Senior Tech]

Then you need to apply for pro status and post this in the pro area where it can be discussed. It can't be in the open areas of the forum.

[slonergan82]

ya I had him put a bucket under the t&p valve incase it goes. I want to see if it is bleeding by because the presssure was about 30 when I arrived. I let some water out and lowered it to 12. I will see tomorrow if it rises again.

[larobj63]

Lots of variables.

How many stories is the building? Boiler in the basement? Expansion tank bladder still intact? Expansion tank have proper charge? Confirmed the P&T valve is sized correctly for the boiler?

This can be dangerous - call a tech in with hydronic experience. :eek: