Field Controls CAS-34U Combustion Air SystemThe Field Controls CAS 34U is a versatile combustion air system designed for oil (3. 5 GPH) or gas (450,000 BTU) applications. Compatible with both 120V and 24V control systems, it delivers reliable air supply for efficient combustion. The unit includes a 4 inch intake air hood and is designed to replace CAS 3 and CAS 4 for simple retrofits. This package ensures stable combustion air delivery, reduces draft related issues, and supports safe,

Overall outer diameter: 6-5/8 inches

improve fuel efficiency

with counterclockwise rotation and durable ball bearings to ensure smooth

The kit is designed to offer predictable performance

Armstrong 56W67 Supply Air Blower Motor delivers reliable airflow for HVAC systems

cooling and hydronic systems with durable brass body and corrosion-resistant internals

The high-reliability design achieves a Cv of 5 with power ratings of 10

Category: Combustion Air System Intake Hood

Type: 3-Way Zone Valve Body

0–150 PSI for water

This OEM replacement part for Carrier HVAC control boards ensures precise signal processing and stable operation within your cooling or heating unit

Design: Shaded pole