These models are designed to provide combustion air for appliances when direct connection to the burner is not possible (when the appliance is located in a confined space). According to NFPA 54 and NFPA 31, an engineered system such as a CAS-3, 4, 6 or 7 may be used to overcome the lack of air in a confined space. The CAS-3 is designed for use with oil appliances. The CAS-4 is for use with gas appliances with 24 VAC gas valve controls. The CAS-4MV is for use with 750mV power pile gas appliances. Each is designed for optimum safety and includes a proving device that won’t allow the burner to engage without the Fan-in-a-Can® operating. Multiple units or additional controls are required for multiple appliance installations. Each is equipped with a two speed control for enhanced versatility. By choosing our CAS series, you can ensure reliable and efficient combustion air supply, while meeting strict safety standards and regulations.

Specifications:

Features:

• Motorized Blower
• 4" Galvanized Intake Air Hood
• (2) Mounting Brackets to secure CAS to wall
• (2) wire conduit connectors
• 6" x 4" Pipe Reducer Fitting
• 6" Orifice Ring
• High/Low Motor Speed Switch

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