Field Controls 46139940 Combustion Air System control kit 24V CAS-4

The Field Controls 46139940 Combustion Air System Control Kit 24V CAS-4 is a control and regulator of the combustion air in HVAC systems. It operates on 24-volt control circuits, and it coordinates the action of fans, dampers, and sensors to provide adequate supply of air to the combustion chamber, to maximize the combustion of fuel and system efficiency. The kit is normally attached in gas-fired furnace or boilers and is incorporated with the existing control panels to keep track of the airflow, ensure secure limits, and avoid insecure working conditions.