ZoneFirst RDP-8 Damper 320788-703 Unlike older factory models where

Unlike older factory models where transformers were wired directly to the potentiometer

This kit allows you to upgrade the system to use a standard flame probe

This wall mounting unit features a negative temperature coefficient (NTC) element

5" water column output for efficient furnace operation and proper flame rectification

the HD52GK208 is rated for both 208V and 230V AC

ZoneFirst RDP-8 Damper 320788-703 Unlike older factory models whereThe ZoneFirst RDP 8 is a professional grade 8 inch round zone damper designed for seamless integration into high performance residential and light commercial HVAC zoning systems. Engineered with a heavy duty 24 gauge galvanized steel shell, this single blade damper provides reliable airflow control for duct systems rated up to 2. 0 W. C. equipment. It features the advanced MP12M modular motor, a high torque 12Vdc actuator that operates on a power open