The Avenger is a condensing, forced draft, fire tube appliance utilizing a premix power burner based on a push through design which offers several venting options. Heat output is controlled by air/gas ratio control gas valves which provide seamless modulation. The Avenger provides central heating or domestic hot water at working pressures up to 160 PSI. It is designed for use with a pumped and pressurized system. The boiler/water heater will automatically modulate to provide heat outputs between 100% and the minimum input.
The Avenger models 1000-4000 use two automatic gas valves - one at the low end and one at the high end. The High-End Gas Valve works on the principle of differential pressure. Operation of the fan generates a differential air pressure, which the air/gas ratio control gas valve matches on the gas side. The steady state efficiency is maintained across the entire range of modulation. Air and gas are metered in precise proportion (1:1 Ratio) to modulation signal, allowing combustion characteristics, which determine efficiency, to remain the same over the entire operating range. The Low-End Gas Valve works on the principle of negative pressure.