Field Controls CAC-120 120V Combustion Air Control Kit for CAS Systems

The Field Controls CAC-120 is a 120-volt combustion air control kit designed to enable multiple appliance connections to Field Controls CAS (Combustion Air System) models. This essential control kit allows additional 120 VAC-controlled heating appliances to be connected to CAS-3, CAS-4, CAS-6, or CAS-7 systems when multiple powered appliances need to be served by a single combustion air system.

Key Features:

• Compatible with Field Controls CAS-3, CAS-4, CAS-6, and CAS-7 Combustion Air Systems
• Enables control of additional heating appliances on chimney-vented oil-fired systems
• Includes junction box with mounted fan proving switch and relay base
• Complete kit with 120 VAC relay, conduit connector, and 10-foot length of 1/4-inch plastic pressure sensing tubing
• OEM part number 46139963
• Manufactured in the USA

Application: The standard CAS control system operates only one appliance. The CAC-120 is required for each additional appliance added to the same CAS unit when serving multiple powered heating appliances. One CAS unit can handle a maximum total combined firing rate input of up to 500,000 BTU/Hr. This control kit is essential for multi-appliance installations requiring coordinated combustion air management.

Installation Notes: The junction box must be mounted with the pressure switch diaphragm in a vertical position, away from heat sources and in a dry location. Professional installation by a qualified HVAC technician is required in accordance with manufacturer's instructions and applicable codes.