Combustion gases enter the third pass of these boilers at about 700°C, enabling the Ansty to reach condensing temperatures sooner than conventional reverse-flame boilers with gas temperatures being typically up to 1000°C.
Flue-gas passages with a patented design maximise turbulence and enable efficiencies of up to 108.5% net. Flue sections slope to the rear of the boiler, providing natural drainage of condensate.
Seven models offer outputs from 75 to 320 kW. The smallest model is less than 700 mm wide, so it can pass through a standard doorway. Removable front and rear plates reduce the size by a further 100 mm.
The Ansty range is available with a high/low or fully modulating burner.
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