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Steam boiler with baseboard & radiant floor.
I may have a job where the existing steam boiler is supplying steam for the home, also domestic water, 2 zone baseboard and one zone radiant floor. The radiant isn’t hooked up but the baseboard is, I think when the customer redid the kitchen and family room they added the radiant floor. I noticed the 2nd zone of the baseboard does not get warm. I think it just has to be recipes in the basement with a separate return with a shut off and hose bid.
The question is when I put a new steam boiler, by the way going from oil to gas. Can I or should I use the add a loop which I did twice in the past but put a flat plate hex with a bronze B & G 100 pump on the side of the steam boiler and on the baseboard/ radiant floor side put a pump sized properly for the baseboard and radiant floor. Which look small.
If I add my rads and get a total of 75,000 btu of steam an about 8,000 for baseboard and both numbers are high. So I am not talking about a big boiler at all. Only one shower in house so there is no domestic water problem.
I don’t think they want a tank water heater either.
Give me some idea of what you would do.......