Fire box bf3 power 42kw with DHW production with control unit without casing and circulator

Description

BOX FIRE BF3 is a pre-assembled thermal module that allows you to heat rooms through the use of hot water produced by an open vessel solid fuel heat source (fireplace boiler or boiler stove without built-in circulator) and at the same time to produce instantaneous domestic hot water through a 14 or 20 plate heat exchanger and a three-way diverter valve with DHW precedence function over heating. If the fireplace boiler or boiler stove is equipped with a circulator, the module to be used is the one without a circulation pump (BF3S).

When the temperature of the fireplace boiler exceeds 30 °C, set on the FDG control unit, the PTC circulation pump of the fireplace boiler starts. When the temperature exceeds a second value of 40 °C, which can also be set, and in the event of a DHW withdrawal detected by the FX flow switch, the VD motorized three-way valve diverts the hot water flow of the fireplace boiler onto the primary circuit of the IC8 plate heat exchanger for the rapid production of DHW. The combined action of the VD diverter valve and the FX flow switch guarantees the precedence of the production of Domestic Hot Water over the heating function.