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Penn Boiler G-75 (year 1966) parts, or replace unit?
I have a 1966 year Penn Boiler Model G-75. It's 75M input and 60M output, Natural Gas. It also has an imprint stamp "20% REDUCE ORIFICE" on same plate. Cannot find any serial number, but the plate says Penn Boiler is a division of PEBBCO INDUSTRIES INC in Lancaster PA, and I'm trying to find parts and the service manual if available. I think the gas/flow valve may be getting sticky. The water circulator just above it had a tiny leak that dripped water right into the TH hole of the Honeywell box connected to the flow valve - or whatever the incoming gas line into a cast box that has a pilot lighter and control like a water heater. I tapped it a few times and the flame came back to full force, it was stuck on a lower flame. I hope I didn't make it burn hotter than it should, and I adjusted nothing else, and now seems to be working fine again. It makes fine heat for the upgraded house so size is ok. 1) Is this a gas valve I can find a direct bolt-on replacement? Where? Appreciate any model numbers or tips, 2) What should I replace this unit with when I have the money to do so? I have a DHW heater next to it and curious if I ought to go with a combo boiler and DHW in one? if so which ones are recommended for greatest energy savings? I just replaced the hot water heater last summer, but don't mind making more space in the basement closet for additional storage either.. THANKS FOR HELPING!