Boiler pressure drops when call for heat

[Alexhoc10]

It's fine. This won't cause long term issues.

Ok. Thank you guys! I’ll leave it how it is! Appreciate you guys!

 

[Reach4]

Just doesn’t seem right and don’t want any long term issues if I can fix it now.

I am not expert on this, but it seems to me that if the pressure gauge is on the suction side of the circulation pump, the indicated pressure would go down when the circulation pump turns on.

 

[Sponsor]

 

[Alexhoc10]

I am not expert on this, but it seems to me that if the pressure gauge is on the suction side of the circulation pump, the indicated pressure would go down when the circulation pump turns on.

Yea I think that is what is happening. So until I’d replumb the system the right way I’m just curious if I should leave the cold water pressure at 12psi then the pump kicks on and the gauge reads about 9psi or if I should leave it how it is I upped it to 15 psi cold so when the pump cycles on it drops to 12psi

 

[Fitter30]

The fill and ex tank should be moved to suction side of the pump the easiest place would be to add a tee between relief valve and its pipe. Just wait till summer.

 

[Alexhoc10]

The fill and ex tank should be moved to suction side of the pump the easiest place would be to add a tee between relief valve and its pipe. Just wait till summer.

Ok thank you! For now leave the pressure cold at 15 so when it starts and drops it’s at 12 or put the pressure at 12 cold and when it starts and drops it’s at around 9?

 

[Fitter30]

Measure from bottom of boiler to the highest water level with boiler and pumps off. With that number multiply by .43 that tells you how high the water level is. If level is over your measurement by 2' your in great shape.