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Combustion Air System CAS-1
Combustion Air System CAS-1
Combustion Air System
Combustion Air System
Combustion Air System CAS-1Combustion Air SystemCombustion Air System

Highlights of the CAS-1 Combustion Air System

  • SAVES TIME: Designed for use in a confined space
  • EFFICIENT: Delivers combustion air for mechanical rooms, boiler rooms, or furnaces
  • OPERATION: For use with oil or gas applications

Features of the CAS-1 Combustion Air System

The CAS-1 combustion air system is designed for use on the Beckett AF II NX Series and Riello 40BF oil burners with a combustion air intake. For the purpose of routing combustion air directly to the burner, with the added safety feature of the vacuum relief valve.

What is combustion air?

Combustion air is literally just the air needed to provide a continuous supply of air for proper combustion or burning.

When Do You Use A Combustion Air System?

When construction is too tight and/or to provide source of fresh air for combustion. The CAS-1 and CAS-2 connect directly to oil burners. The CAS-3, CAS-6 and CAS-7 are for multiple appliances or when direct connection is not possible.

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 31, an engineered system such as a CAS-3, CAS-6, or CAS-7 may be used to overcome the lack of air in a confined space. The CAS-3 is designed for use with oil 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.

Combustion Air Systems should be installed by a licensed contractor. Find a contractor in your area.

Specifications of the CAS-1 Combustion Air System

46252502 CAS-1 Oil Beckett AFII, NX Riello 40BF Up to 2 gph 4" Intake Air Hood, 4" Vacuum Relief Valve

Combustion Air System Certification

cETL listed for oil and gas heating equipment

CETL Certification Logo


Customer Service Rep


2630 Airport Road
Kinston, NC 28504

Additional Fan in a Can Options

CAS-2B & CAS-2C Combustion Air System
Combustion Air Systems CAS-2B-&-CAS-2C
Combustion Air System
Combustion Air System CAS-3
Cas-4 Fan In A Can, Combustion Air System
Combustion Air System CAS-4
Combustion Air Systems CAS-6
Combustion Air System CAS-6
Control Kits For Power Venter Fan In A Can
Control Kit
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