low mass boilers

Russ Stockton

Acouple of supply houses in my area ar pusshing low mass biasi boilers instead of buderus or viessmann. Any opinions?

kevin coppinger_4

as always....

it depends. I would use one in a hydro air or basebaord system ...but not in a large mass system (slab radiant or cast iron rads)... at least not w/o a buffer tank or sophisticated protection controls....Biasi is a fine boiler. kpc

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Tundra

The Biasi is my prefered boiler for baseboard or radiant and if I did hydroair I would use it there also. I put one in my home a few years back and I am pleased with it.

steveb_2

Is it ok to use outdoor reset control with a low mass boiler that feeds a high temperature baseboard system? I would think that the low mass combined with relatively low operating temperatures during conditions less extreme than design conditions would result in short firing compared with a higher mass boiler. Is a buffer tank required?

kevin coppinger_4

It would be.....

fine. QHT even offers their own version of reset. kpc

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