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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.
COMBUSTION AIR SYSTEM
Model: CAS-6, CAS-6SK, CAS-7, and CAS-7SK
DO NOT DESTROY
THESE INSTRUCTIONS MUST REMAIN WITH EQUIPMENT
I
TEMS
1) CAS unit (ETL Listed)
1) Star Kap (only on SK
2) Mounting brackets for
2) Wire/conduit connector(s)
1) 24VAC Control Relay
1) 120VAC Control Relay
2630 Airport Road Kinston, NC 28504
Phone: 252-522-3031 FAX: 252-522-0214
ww.fieldcontrols.com
I
NCLUDED
"Fan-in-a-Drum"
Models)
CAS unit
(SPDT)
(SPDT)
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Related Manuals for Field Controls 46371700
Summary of Contents for Field Controls 46371700
- Page 1 COMBUSTION AIR SYSTEM Model: CAS-6, CAS-6SK, CAS-7, and CAS-7SK TEMS 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) 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.
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Page 2: General System Operation
6. Calculate the equivalent length of the smaller diameter duct pipe that may be used with the particular CAS system, including elbows, reducer/increaser and other fittings (except the StarKap, see page 32 of the Field Controls Contractor Reference Guide). The effects of the StarKap are already figured into the diagram, so do not attempt to include any value for the StarKap in your calculation for equivalent length. - Page 3 DIAGRAM A CAS-6 (FAN + STARKAP SK-10) SIZING CHART MAX. EQUIVALENT FEET OF PIPE OIL INPUT FIRING RATE, GPH 2.90 3.90 4.90 5.90 6.90 7.90 200.0 175.0 12" PIPE 150.0 12" DUCT 10" REGION 125.0 PIPE 8" 100.0 10" DUCT PIPE REGION 75.0...
- Page 4 © Max. Equivalent Length of Pipe, Including StarKap CAS-6 OIL CAS-6 GAS 8” duct 10” duct 12” duct (gph) (BTU/hr) 420,000 1253 3119 3.25 455,000 1051 2616 490,000 2217 3.75 525,000 1893 560,000 1627 4.25 595,000 1405 630,000 1217 4.75 665,000 1057 700,000...
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Page 5: Installation
INSTALLATION CAS U LACEMENT The motorized CAS unit should be located on a flat horizontal surface near the combustion air intake of the appliance. Two mounting brackets are provided for securing the unit against a solid structure, such as a wall, column, or the side of the appliance itself. - Page 6 sections describe the most common applications. The references to various series of control kits implies that any kit in that series may be used. Such as when a figure refers to a CK-60 series kit, a CK-60, 61, 62, etc. may be used. If further information or additional wiring diagrams are needed please consult Field Controls' technical support.
- Page 7 Figure 7 Figure 8 Page 7...
- Page 8 Figure 9 Figure 10 Page 8...
- Page 9 Figure 11 Figure 12 Page 9...
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Page 10: Maintenance
If this is necessary, take note of the positions and locations of whatever items that may need to be removed to replace other items. If in doubt, please consult the Field Controls Technical Support at 1-800- 742-8368. - Page 11 Page 11...
- Page 12 Page 12 P/N 46371700 Rev B 06/06...