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ericjdaniels

Two-zone Boiler Sizing

ericjdaniels
9 years ago

I have a CGa-3-SPDN 70,000 btu boiler. My house is currently 1,000 sq/ft and the heat works wonderfully. I am adding on 780 square feet to the side, bringing my house to 1,780 sq/ft. Two questions:

1) Can this boiler handle our whole house, figuring average house stuff (R19 in walls, 8 foot ceilings, average windows, etc)

2) If not, how can I convert my boiler to a two-zone system where both zones can't call at the same time?

Thanks!

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