Jadnashua
Retired Defense Industry Engineer xxx
I'm thinking of replacing my current boiler with the Weil-McLain Ultra 80. Does anyone have any experience with this company and this product? I'm impressed with the ability to derate the output down to 20% automatically to match the demand. As they explain it, this also increaes the efficiency (more surface area per heat density = greater absorbtion of available heat - less out the flue when throttled down). Based on my heat load evaluation, I need a steady state 28K btu on a -10 degree day. So, the 80K unit would give enough to warm the place up and make some domestic hot water and not be stressed, and would normally run at much lower than the maximum available output except when making hot water for showers/baths, etc.
I have a hydo-air system as a backup (was the original heat system), suplimented with in-floor radiant heat system as the primary system for most of the house (actually a townhouse - my neighbors help to keep me warm!).
I have a hydo-air system as a backup (was the original heat system), suplimented with in-floor radiant heat system as the primary system for most of the house (actually a townhouse - my neighbors help to keep me warm!).
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