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I'm new to this world, and it is overwhelming.
I just bought a house built in 1910 that has a 1-pipe steam heating system in Portland, Maine. The home has 4 units with 2 bedrooms, kitchen bath, and living rooms each. There are 5 radiators per unit, so 20 in total.
The boiler is a gas Riello 40, with a Peerless boiler (oil converted to natural gas) venting into a single chimney.
I have been troubleshooting the system for a couple weeks now. I have replaced the 4 main vents with brand new vent-rite 35s.
Initially my burner was short-cycling, but it was adjusted by a local company.
Now it runs continually.
Some of the pipes in the basement are hot, but there is a rapid transition to cold along the length of each pipe, before they get to the risers. The house is receiving heat only from the warmth rising from the basement. Fortunately it's still in the 40's in Portland.
I am not sure where to start. Should I replace all the steam valves? If so, is vari-valve the way to go?
Additionally, the pressure gauge reads 0. A couple weeks ago, when it was short-cycling it read 8 PSI. I know this is wicked high for my system.