When a header is removed for service

EWC Controls PRD 12" Pressure Regulating Damper Made in USA

the Maxitrol M511B series is specifically designed for negative pressure (suction) systems

It is critical to match the 1/6 HP rating

As a field-proven HVAC safety switch

Daikin-McQuay 073300901 Amplifier/Rectifier Freon When a header is removedThe Daikin McQuay 073300901 Amplifier Rectifier is a critical electronic control component engineered for high precision burner flame monitoring. Designed with a 3 second Flame Failure Response Time (FFRT), this unit provides the immediate signal rectification necessary to interface between the flame sensor and the primary burner control. In industrial and commercial HVACR applications, the 073300901 flame amplifier ensures that the combustion