Looking for direct vent/PVC hang on the wall boiler without a primary zone.

[cpeters]

120 btu or less. I have two zones and would like to avoid the primary zone and
just use the two zone pumps I have. Something simple. Currently using HWH
which works fine except in frigid cold temps. Need something to get water temp
to 180 degrees. HWH only goes to 130-140. Any suggestions?

 

[fitter30]

Since your running above 130*f return condensing boiler is 86% efficient. Cast boilers come in several sizes 56k, 86k, 113k with 84% efficiency there all about the same btu's will vary a little. Check on your flue size.

Weil-McLain 381359070 CGa-25-PIDN - 32K BTU - 84.0% AFUE - Hot Water Gas Boiler - Chimney Vent

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74 - 103K BTU Condensing Boilers

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