be_ixf;ym_201909 d_14; ct_250
skip to Main Content
Combustion Air System

Fan in a Can®️ CAS-3 and CAS-4 Combustion Air Systems

CAS-3 For Oil Heating Appliances and CAS-4 For Gas Heating Appliances

The Fan-in-a-Can diffuses the outside air into the room near the burner to ensure adequate air for efficient combustion.

The CAS-3 and CAS-4 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-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.

The Fan-in-a-Can, Jr., model CAS-4Jr. is designed for gas appliances up to 110,000 BTU/hr input. A 4 intake Air Hood (IAH) is included along with mounting brackets to secure the Fan-in-a-Can, Jr. to a wall. It may be used with a residential water heater with the addition of control kit CK-20 FV/FG.

Specifications

PART # MODEL FUEL BURNER APPLIANCE INPUT COMPONENTS
46266301 CAS-3 Oil Any oil heating appliance 120V Up to 3.5 gph 4" Intake Air Hood, Fan-in-a-can, 6" to 4" Reducer Restrictor Plate
46266302 CAS-4 Gas Beckett AFG or AF, Carlin EZ-1, CRD, FRD, Wayne MSR Up to 450,000 BTU/hr. 4" Intake Air Hood, Fan-in-a-can, 6" to 4" Reducer Restrictor Plate
46266307 CAS-4P Gas Beckett AFG or AF, Carlin EZ-1, CRD, FRD, Wayne MSR Up to 450,000 BTU/hr. 4" Intake Air Hood, Fan-in-a-can, 6" to 4" Reducer, Restrictor Plate ADA-1
46387500 CAS-4MV Gas Beckett AFG or AF, Carlin EZ-1, CRD, FRD, Wayne MSR Up to 450,000 BTU/hr. 4" Intake Air Hood, Fan-in-a-can, 6" to 4" Reducer Restrictor Plate
46525600 CAS-4JR Gas Beckett AF and AFG, warm air funaces Up to 110,000 BTU/hr. 4" Intake Air Hood, Fan-in-a-can
Stay in Touch, Stay Informed
Back To Top