and water applications with a wide 0-150 PSI pressure range

this assembly ensures direct compatibility and physical fitment for maintaining factory-specified static pressure and airflow requirements

you can expand your sequencing control to accommodate large-scale boiler plants or complex VAV applications

the D352AA-2 is the direct replacement for D352AA-1 and fits perfectly into existing System 350 architectures without requiring modifications

Carrier EF680047 Gas Valve 322057-301 and water applications with aThe Carrier EF680047 Gas Valve is an OEM single stage slow opening gas valve engineered for precise fuel regulation in high efficiency Carrier, Bryant, and Payne furnaces. Operating on a 24V AC control circuit, this 1 2 inch NPT valve is factory calibrated to a 3. 5" W. C. nominal pressure setting, ensuring optimal combustion stability for HSI and DSI ignition systems. As a veteran technician knows, maintaining the correct manifold pressure is