Boiler question
#5
Have a 24 yr old Burnham oil fired boiler. Last week it decided to stop working.  My “go to guy” (he is the go to guy in this county) discovered a bad slider joint on the backside of the circuit board which had opened the neutral. We soldered a jumper wire on the circuit board and got the furnace running. This same thing had happened about 8 years ago discovered & fixed it the same way. Eventually replacing the original board when we got a replacement (current board now)
My problem is the T&P valve is leaking. He got a 30 PSI relief valve to me and I replaced the old one. It leaks, since I noticed the PSI on the furnace going above 30psi. Think before hand it ran around 20+psi, Temp is 170 F. 

I would call him , but tomorrow he has shoulder surgery, last Thursday his mother passed away with funeral last Monday. He got me the relief valve Monday night. Just not going to bother him— small rural town where everyone helps everyone. Wife and I spent most of day helping serve luncheon at her funeral.

Need some ideas as to what to do. 

Thanks for any help.
 Don C.
Reply
#6
The relief valve is doing what it is supposed to do. Open and release any system pressure above 30 psi. Close any valves on the city water feed line. A leaking (through, not out) pressure reducing valve will over pressure the system. Hot system at 15-18 psi and shut off the feed. The other potential is a failed bladder in a sealed expansion tank or a water logged non bladder tank.
Blackhat

Bad experiences come from poor decisions. So do good stories. 


Reply
#7
Thanks for the info. Will check these out today
Reply
#8
(02-05-2025, 10:18 AM)teacher Wrote: Thanks for the info. Will check these out today
Blackhat's post is great advice. One less common failure that would cause your symptom is if a tankless coil or indirect fired water heater (i.e. Boilermate, Super-Store) is leaking higher pressure domestic water into the lower pressure F.H.W. system.

If you have valves to isolate the water heater zone, you can put a gauge on the drain and watch it climb to domestic water pressure. (FYI; 1/4" NPT fits nicely into a 3/8" washer machine hose. ) Also, if that's the problem and you just close the feed to the water heater, you could get nasty boiler water going to your dishwasher.
Sign at N.E. Vocational School Cabinetmaking Shop 1976, "Free knowledge given daily... Bring your own container"
Reply


Forum Jump:


Users browsing this thread: 1 Guest(s)

Product Recommendations

Here are some supplies and tools we find essential in our everyday work around the shop. We may receive a commission from sales referred by our links; however, we have carefully selected these products for their usefulness and quality.