2630 Airport Road · Kinston, NC 28504
Phone: 252-522-3031· Fax: 252-522-0214
www.fieldcontrols.com
2630 Airport Road · Kinston, NC 28504
Phone: 252-522-3031· Fax: 252-522-0214
www.fieldcontrols.com
COMBUSTION AIR SYSTEM
Model: CAS-4
This product is designed for use with any natural gas or LP burning furnace,
water heater, or boiler with a 24 VAC control system. It may be used with a
millivolt powered system with additional hardware. It may also be used with
more than one appliance. The CAS unit mechanically draws air into a
structure and disperses it near the combustion air intake of an appliance. If an
optional Vacuum Relief Valve (VRV) is used, the incoming air is tempered
before entering the structure's airspace. Refer to Diagram A and B for
guidance in setting up the CAS system based on the size and length of the
connecting duct-work and the input rating of the appliance.
This device MUST be installed by a qualified agency in accordance with the manufacturers installation
instructions.
The definition of a qualified agency is:
any individual, firm, corporation or company which either in person or through a
representative is engaged in, and is responsible for, the installation and operation of gas appliances, who is experienced
in such work, familiar with all the precautions required, and has complied with the requirements of the authority having
jurisdiction.
DO NOT DESTROY
THESE INSTRUCTIONS MUST REMAIN WITH EQUIPMENT
I
TEMS INCLUDED IN KIT
:
1) Motorized Blower
1) 4" galvanized intake air Vent Hood
2) Mounting brackets to secure the CAS to a wall
2) Wire/conduit connector(s)
1) 4" x 6" Pipe Increaser Fitting
1) 6" Orifice Ring
1) Instruction Sheet
1) High/Low Motor Speed Switch
