COMBUSTION AIR SYSTEM
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 residential water heater 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. Refer to Diagram A and Table 1 for guidance
in setting up the CAS system based on the size and length of the connecting ductwork and the input rating
of the appliance.
WARNING! CONNECTIONS TO MULTIPLE APPLIANCES MUST FOLLOW INSTALLATION INSTRUCTION
WARNING! CONNECTIONS TO MULTIPLE APPLIANCES MUST FOLLOW INSTALLATION INSTRUCTION
WIRING DIAGRAMS. FOR HELP CALL 1-800-742-8368.
WIRING DIAGRAMS. FOR HELP CALL 1-800-742-8368.
READ THESE INSTRUCTIONS CAREFULLY AND COMPLETELY BEFORE PROCEEDING WITH THE INSTALLATION.
This device MUST be installed by a qualifi ed agency in accordance with the manufacturer's installation instructions. The defi nition of
a qualifi ed agency is: any individual, fi rm, corporation or company which either in person or through a representative is engaged
in, and is responsible for, the installation and operation of HVAC appliances, who is experienced in such work, familiar with all the
precautions required, and has complied with all the requirements of the authority having jurisdiction.
Installed By:
MODEL: CAS-4JR
ITEMS INCLUDED IN KIT:
1- CAS fan unit
1- 4" galvanized intake Air Vent Hood
2- Mounting brackets to secure the CAS to a wall
2- Wire/conduit connector(s)
1- Instruction Sheet
Please retain these instructions after installation.
Phone:
www.fi eldcontrols.com
Installation Date:
P/N 46527900 Rev C 03/17