Is this fire door compatible with both gas and oil boilers

preventing fuel accumulation in the event of flame failure—a standard requirement for modern commercial HVAC installations

What systems are compatible with this limit switch

Physical damage from failed blower wheels

ensuring stable performance across a broad operating temperature range of -40°F to 180°F

Reznor 209423 Kit 320074-702 Is this fire door compatibleThe Reznor 209423 Kit is a critical damper motor field replacement kit engineered for specific high efficiency Reznor unit heaters and make up air systems. This HVAC replacement part ensures precise modulation of combustion or outdoor air intake, maintaining optimal static pressure and heat exchanger performance. Designed to replace failing damper actuators in the field, the 209423 kit includes the necessary hardware to restore proper airflow control