Because this is a variable speed DC motor

the 800-0221 is calibrated for the specific thermal expansion requirements of Bard HVAC units

or AV series) must be sourced separately based on your required torque and control signal

Utilizing DETECT-A-FLAME® flame sensing

When troubleshooting a furnace inducer assembly that has failed due to bearing wear or electrical shorts

Hydrotherm BM-8787 Pilot Assembly 318172-701 Because this is a variableFor service technicians maintaining legacy hydronic systems, the Hydrotherm BM 8787 Pilot Assembly is a direct replacement OEM component designed to restore reliable ignition in Hydrotherm boilers and water heaters. As a complete pilot burner assembly, the BM 8787 includes the specialized bracketry, pilot orifice, and thermocouple connection necessary to interface with your existing gas valve. Precision engineered for high temperature durability, this