reducing future mechanical stress

supplying constant main-air pressure to the pilot mechanism even when upstream controller output shifts

providing rapid shutdown in the event of flame loss

What is the minimum timing interval for this unit

Standardized Mounting: Features a footprint designed for quick installation in standard HVAC electrical panels

Lennox X4137 Filter mario reducing future mechanical stressThe Lennox X4137 MERV 11 Carbon Pre Filter is a critical component for maintaining peak performance in PureAir PCO14 12 air purification systems. Engineered to handle high velocity airflow while minimizing pressure drop, this 14x25x21 filter serves as the primary stage of filtration, shielding the PCO catalyst and UV lamps from heavy particulate matter. The integrated activated carbon layer provides immediate VOC reduction and odor mitigation,