CAS-3 (oil)
This model is designed to provide combustion air for
appliances when direct connecto the burner is not
possible. According to NFPA 54 and NFPA 31, an
engineered system such as a CAS-3 may be used to
overcome the lack of air in a confined space. The CAS-3
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 CAS-3 is equipped with a two speed control for
enhanced versatility.
H
OW THE
CAS-3 W
ORKS
:
When the thermostat calls for heat, the Fan-
in-a-Can™ engages and begins drawing
outside air into the structure. When air flow
is established, the CAS allows the burner to
activate. The Fan-in-a-Can™ diffuses the
outside air into the room near the burner.
Model
Number
Fuel Application
Components
CAS-3 Oil
Any oil
heating
appliance
4” Intake Air Hood
Fan-in-a-Can™ Assembly
6” to 4” Reducer
Restrictor Plate
Intake Air Hood
Fan-in-a-Can™
Assembly
P/N 46457000 10/03
