The Bard 8402-031 Limit Switch is a critical safety component designed for high-limit temperature regulation in Bard HVAC systems and wall-mount units

This specific brass model is optimized for water

allowing it to withstand high-temperature hydronic heating environments

the M520R-3/4 modulator valve utilizes a 24VDC solenoid to provide proportional gas flow based on amplifier signals

Standard wiring involves 24V hot (Term 1)

Heil Quaker ICP 1085643 Motor L99H008 The Bard 8402-031 Limit SwitchThe Heil Quaker ICP 1085643 Motor is a high performance, direct drive PSC blower motor engineered for heavy duty commercial and residential HVAC applications. Operating at 460Vac and single phase, this 1 2 HP blower motor delivers a consistent 1075 RPM to ensure optimal static pressure handling and system airflow. Designed with a 48 NEMA frame size and a 5 8 inch diameter shaft, it features a 4 speed configuration, allowing technicians to fine tune