Field Controls 46371700, Manual

COMBUSTION AIR SYSTEM  

Model:

 CAS-6, CAS-6SK, CAS-7, and CAS-7SK 

This product is designed for use with any oil or gas fired furnace, water heater, or 
boiler with 24 VAC or 120 VAC control systems. It may also be used with millivolt 
water heaters and 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 Diagrams A & 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 

I

NCLUDED

1)   CAS unit (ETL Listed)  

“Fan-in-a-Drum” 

1)   Star Kap (only on SK   

 Models) 

2)   Mounting brackets for  

 CAS  unit 

  2)   Wire/conduit connector(s) 

1)  24VAC Control Relay 

 (SPDT) 

1) 120VAC 

Control 

Relay 

(SPDT)

2630 Airport Road Kinston, NC 28504 

Phone: 252-522-3031  FAX: 252-522-0214 

ww.fieldcontrols.com