Securing the Air Cleaner Cabinet | |
This drawing shows a Skuttle High- | This photo indicates a possible placement |
Efficiency Air Cleaner cabinet. The | of sheet metal screws to secure the Air |
sectioning lines and arrows indicate the | Filter to the ductwork. (Screw placement |
cutaway portion of the cabinet, | may vary, depending on the installation |
photographed at right. | technique used.) Circled screws are 1/2" |
| long to prevent interference with the filter |
| media cartridge; all others are 1" long, #8 |
| sheet metal screws. |
Special Considerations
Transitions
Transitions – when needed – should be constructed so that the angle of expansion is no more than 20° (4" per foot, max.).
Turning Vanes
To reduce turbulence, turning vanes are recommended if the installation requires a 90° elbow, or if there is an angled fitting directly beside the Air Cleaner.
Humidifiers
It is crucial to avoid the buildup of moisture in and around the Air Cleaner media during humidifier oper- ation. Evaporative type humidifiers will not effect the media. Spray or steam units should be installed in the air stream after the Air Cleaner. (If it is necessary to install a spray or steam humidifier that is inline before the Air Cleaner, there must be 8 or more feet of ductwork between the humidifier and the Air Cleaner.)
Maintenance
Replacement of the Air Cleaner's pleated media element (i.e., the filter itself) can be determined by peri- odic visual inspection. The average lifespan of a media cartridge is 12 months, but actual times vary depending upon system run times, and the amount and type of contaminants present. (You may want to have your HVAC contractor replace the media during the annual or biannual inspection of your furnace.)
