Tjernlund Products RT1500 Rooftop Draft Inducer W/Fan Prover PSA-1

The Tjernlund Products RT1500 Rooftop Draft Inducer W/Fan Prover PSA-1 is a rooftop exhaust induction unit designed to support flue gas movement by generating controlled negative pressure in venting systems use in HVAC heating systems. It is mounted at the termination point of vent lines serving boilers, furnaces, and other combustion-based equipment. The unit draws exhaust gases through the duct network to improve draft consistency and maintain stable venting conditions during operation. The integrated fan proving switch verifies airflow status and coordinates with control circuits to support safe and reliable operation in commercial heating installations.