high pressure oil furnace
Posted by joe minnella on December 22, 2003 at 13:59:28:
I live in a 2 family home. The oil furnace is over 35 yrs. old( hot water system).Gas service powers normal hot water in house except for winter heat. When cold the pressure is about 5--7 psi. When temp. on furnace reaches 140--150 degrees, pressure rises to 35--37 psi. Overflow runs over, water into a bucket.
I drained the expansion tank ( age unknown) and refilled, no change in performance of furnace..
Please advise on possible problems. Thank you. jm


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