Combustion Air Systems

CAS-1 and CAS-2 (Oil)

Direct Connect
The CAS-1 and CAS-2 Field Combustion Air Systems provide controlled amounts of outside air for proper combustion of oil heating appliances. These models are designed specifically for use with Aero, Beckett, Carlin, Riello, or Wayne burners.


Field AirBoot®


Field BigBoot®

4" Vacuum Relief Valve (VRV)
4" Intake Air Hood

FurnaceBoot™
When to use the CAS
• Too tight construction.
• Provide source of fresh air for combustion.
• CAS-1 and CAS-2 connect directly to oil burners.
• CAS-3, CAS-4, CAS-6 and CAS-7 are for multiple appliances or when direct connection is not possible.

Longer intake air runs require the use of larger diameter pipe between the VRV and the intake air hood. Use a pipe increaser at the VRV and a reducer at the intake air hood.

AirBoot® / FurnaceBoot™

Pipe Diameter

Maximum Linear Feet

Feet/Elbow

4"

44'

7'

5"

60'

9'

6"

90'

11'

Field BigBoot®

6"

30'

11'

7"

60'

12'

8"

100'

14'

Model Fuel Burner Appliance Input Components
CAS-1 Oil Beckett AFII, NX, Riello 40BF Up to 2 gph 4" Intake Air Hood 4" Vacuum Relief Valve
CAS-2B
CAS-2C
CAS-2W		 Oil Beckett AFG or AF, Carlin EZ-1, CRD, FRD, Wayne MSR Up to 2 gph 4" Intake Air Hood 4" Vacuum Relief Valve Field AirBoot®
CAS-2B-90E Oil Beckett AF and AFG, warm air furnaces Up to 1.5 gph 4" Intake Air Hood 4" Vacuum Relief Valve FurnaceBoot™
CAS-2BB Oil Beckett SF, SMG, CF-500, CF-800 Up to 4.5 gph 6" Intake Air Hood 6" Vacuum Relief Valve Field BigBoot®
CAS-2B375 Oil Beckett CF-375 and AFG Up to 3.5 gph 6" Intake Air Hood 6" Vacuum Relief Valve Field BigBoot®
CAS-2CB Oil Carlin, 99-FRD, 100-CRD, 102-CRD, EZ-3 Up to 4.5 gph 6" Intake Air Hood 6" Vacuum Relief Valve Field BigBoot®
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