Field Controls CAS-4P Combustion Air System

Field Controls CAS-4P Combustion Air System is a reliable combustion air system designed for gas-fired boilers with an automatic vent damper. This ETL-listed unit provides a steady, code-compliant air supply to optimize burner performance and safety in both Canada and the US.

With appliance input up to 450,000 BTU/hour, the CAS-4P includes essential components for quick, trouble-free installation: a 4-inch intake air hood, Fan-In-A-Can, and a 6-to-4 inch reducer restrictor plate (ADA-1).

• Fuel type: Gas
• Application: Used on boilers with automatic vent dampers
• Included components: 4" intake air hood, Fan-In-A-Can, ADA-1 reducer plate
• Ducting compatibility: 6-to-4 inch reducer plate for versatile sizing
• Standards: ETL-listed for Canada and US
• Performance: Appliance input up to 450,000 BTU/hour