Specification

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Combustion Air Systems
Combustion
CAS-6 and CAS-7
The Fan-in-a-Drum
®
is a commercial product designed to deliver
combustion air into the mechanical room, boiler room, or furnace
location to overcome a confined space or inadequate air supply. CAS
6 & 7 are dual volt units for oil or gas applications.
When the thermostat calls for heat, the Fan-in-a-Drum® engages and
begins drawing air into the structure. When air flow is established, the
pressure switch closes. The CAS sends a signal to the appliance, allowing
the burner to fire. The Fan-in-a-Drum® diffuses the outside air into the
room near the burner to ensure adequate air for efficient combustion.
How the CAS-6 and CAS-7 Work
StarKap
®
Fan-in-a-Drum
®
Assembly
Fan-in-a-Drum
®
Commercial
Max. Equivalent Length of Pipe, Including StarKap
®
CAS-6 OIL
(gph)
CAS-6 GAS
(BTU/hr)
8" duct 10" duct 12" duct
3 420,000 410 1253 3119
3.25 455,000 344 1051 2616
3.5 490,000 291 890 2217
3.75 525,000 249 760 1893
4 560,000 214 653 1627
4.25 595,000 185 584 1405
4.5 630,000 160 489 1217
4.75 665,000 139 424 1057
5 700,000 121 369 919
5.25 735,000 105 321 800
5.75 805,000 79 241 601
6 840,000 58 176 519
6.50 910,000 49 151 377
CAS-7 OIL
(gph)
CAS-7 GAS
(BTU/hr)
10" duct 12" duct 14" duct
6 840,000 469 1167 2523
6.5 910,000 381 948 2050
7 980,000 311 776 1678
7.5 1,050,000 256 637 1378
8.25 1,155,000 191 476 1029
9 1,260,000 142 354 766
9.75 1,365,000 104 260 563
10.5 1,470,000 74 186 403
11.25 1,575,000 51 127 274
12 1,680,000 31 78 207
12.75 1,785,000 15 39 114
12.88 1,803,000 13 33 72
Can also be
installed
through
the wall