Question: Diverter Tee System

Darryl_3

I am living in a house that was built in 1950. It has a one pipe mono flow system. The first floor has seven convectors. The second floor has four convectors. The second floor master bedroom has two convectors that are
not recessed. My wife hates it (they are quite large) and says either they go or I go.
I would like to replace them with 28ft of baseboard (the required amount for the room size). I would use both set of piping from the two existing convectors so the baseboard is not on a long run. I would increase from 1/2" to 3/4" pipe in the room to the baseboard.

Is there any reason I cannot convert to baseboard heat in this one room only and then zone the first and second floors?

Steve Whitbeck

You will have to use cast iron baseboard.
You cant mix cast iron and fin tube on the same circuit - they have different heating characteristics.

Roger Litman

Convectors

If the convectors are cast iron, they must be replaced with cast iron unless you are replacing the entire zone. If they are non-ferrous, then you can use baseboard as long as you match the balance of the output with the rest of the zone. In other words if the other rooms on the zone are overradiated by x %, you must use the same % for your radiation to get a good balance between the rooms. Cast iron retains heat so that it continues to give up heat while the copper baseboard stops rapidly after the thermostat is satisfied.

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Rudy

1950

convectors, if they are steal they should heating close to the same as baseboard. the problem is 3/4 baseboard takes 4 gpm and 1/2 inch pipe should only give you about 1 gpm on a deverter tee. maybe a new style radiator would work better. if the idea was to DIY then for the 28 feet to work right you would need 4 gpm. 28x600btu= 16800at 4 gpm there is only so much BB you can put between tees with out loosing flow. at 1gpm you would need too much BB for this to work.