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I own a 3 family with 3 floors each with a 3 bedroom apartment. The heat is single pipe steam with a thermostat on the 2nd floor. In order to get he 3rd floor warm I have the 1st at 85, 2nd at 75 and 3rd is 65. The apartments are identical and I was considering taking the 6 section and 8 section on the 1st floor living room and dining room and moving them to the bedrooms on the 3rd floor and moving 2 4 section readiators down to the 1st floor.
My thought process was the smaller radiators would come to temp and shut off and I would have more steam going up the the 3rd floor. The larger radiators would provide more heat where I need it.
I have replaced all the valves with adjustable valves and opened up the valves on teh 3rd floor and turned the ones on the 1st and 2nd way down. This helped but did not solve the problem.
1 The pipes have no isulation on the verticals (visible in the apartments) or the manifold that runs around the basement.
2) the HOT 1st floor living room / dining room are right above the boiler so they get the steam 1st
3) 50 year old oil fired boiler with updated maintenance
4) total sq footage approx 3500 sq ft
5) Hot water is off the boiler
6) Location Massachusetts
Long term I would like to install 3 separate gas fired heating systems and have the tenants pay for thier own heat. Unfortunatley I do not have the budget for it today. Hoping to cut down on teh oil consumption as I am burning about 3500 gallons a year.