INSTALLATION
REMOVE OLD FILTER AND DISCARD
(Figure 12)
NOTE: This filter may be mounted in the furnace compart- ment.
CLEAN BLOWER COMPARTMENT
It is suggested that the furnace blower compartment, blower and blower housing be cleaned to ensure clean air circulation.
INSTALLATION
The following is a typical installation of the air cleaner on a “Highboy” furnace (Figure 8).
1. Place the air filter cleaner on the floor. Stand it upright |
with the power door facing you (Figure 4). If a |
horizontal installation is being planned, lay the cleaner |
on its side, this will help you to visualize the relative |
location of all parts. |
Allow ample space for wiring and servicing the power |
supply box (Figure 13). |
2. Release the latch, remove the power pack (by grasp- |
ing handle and pulling power pack away from cabinet) |
and set it aside. Remove the collecting cells and pre- |
filters. Set |
until the cabinet is installed. |
3. Set the cabinet next to the furnace. If necessary, |
enlarge the opening in the furnace (if possible) to |
match the opening in the cabinet. |
If the furnace opening cannot be enlarged, a transi- |
tion fitting should be used. (Figure 3). |
The cabinet can be attached directly (Figure 13), or |
a starting collar can first be fitted to the furnace inlet. |
A butt or slip joint can be used. |
Figure 12
Power
Frame Supply
Box
Duct
Mounting
Holes
Figure 13
Air Flow | Turning |
| Vanes |
Securely attach the cabinet to furnace inlet, using at |
least two of the mounting holes on each side of the |
cabinet. |
4. Using butt joint, attach duct work (normally an elbow) |
to the upstream side of air cleaner cabinet. (Note the |
use of the sheet metal turning vanes inside the elbow |
to improve air distribution over the face of the cells.) |
(Figure 14) |
NOTE: An optional method of attaching duct work to the cabinet is to modify the cabinet (Figure 15) by bending the tabs outward at a 90° angle and attaching duct work to tabs.
Optional method
(Bend tabs outward at 90˚ angle)
Figure 14
Figure 15
Transition Fittings
If the air duct does not fit the cabinet opening, a transition fitting should be used. Gradual transitions are preferred for greatest efficiency. Not more than four inches per linear foot (approximately 20° angle) should be allowed (Figure 3).
5.Connect the vertical duct section to the elbow. Wedge a wood block between floor and elbow for support (Figure 16).
6.Seal all joints in the return air system downstream from the air cleaner with duct tape to prevent dust from entering the air stream. Tape is usually applied on the outside of ducts, but may also be applied on the inside, or both.
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