The start point is adjustable from 3 to 12 psig

The core of this assembly is its 24Vac three-wire floating signal actuator

The offset adjustment allows you to shift the control's calibration to match a known accurate thermometer or to compensate for sensor placement variances in a large walk-in box or plenum

monitoring the boiler gauge until your target (standardly 12-15 PSI) is reached

it is optimized for standardized motor mounting patterns typically found in residential and light commercial units

Lochinvar & A.O. Smith 100110631 Blower Assembly 321894-709 The start point is adjustableThe Lochinvar & A. O. Smith 100110631 Blower Assembly is a precise OEM replacement part engineered for high efficiency gas fired water heaters and residential heating systems. Operating at a fixed 3400 RPM with a 120V AC power supply, this assembly ensures optimal combustion air delivery and venting performance. The motor pulls a steady 1. 7 Amps at 60 Hz, featuring a robust steel wheel and a rectangular outlet configuration designed for seamless