A Hydronic FHW (Forced Hot Water) Heating Appliance by definition fully integrates a boiler, hydronic distribution and controls into a pre-built, free-standing product. The “heart” is a single, variable speed, “smart” circulator along with the boiler control (aquastat) that combine to distribute heating water very efficiently.
This “smart” circulator continuously regulates heat distribution by maintaining the ideal temperature differential between hot water going to and from your radiation under all conditions. Liken it to having an “automatic transmission” on your boiler as in your car. The more power (heat) you need, step on the gas. Need less, let up on the gas ….. that simple!
Circulation is further managed by the latest high efficiency, low energy ball valves. Taco Comfort Solutions® (the manufacturer) publishes that their Delta-T ECM Hydronic Distribution System dramatically reduces system electrical power requirements (up to 85%) while further reducing your fuel consumption (by up to 15%). We actually do even better!
“DELTA-T”: “Delta” is the Greek letter ∆ used by science as “difference” and “T” as “Temperature”. Therefore, Delta-T (∆-T) = Temperature Difference.
ECM: “Electronically Commutated Motor”. A powerful electronic pulse-driven motor that also dramatically reduces energy. It virtually eliminates “stall” or “sticking”, the primary fail modes of all heating circulators.
The result is Simple, Durable and Efficient heating ….. Period! Follow this link to a more in-depth description.