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Resumen del manual
3. Set the compartment next to the furnace (if possible) to match the opening in the compartment. If the furnace opening cannot be enlarged, a transition fitting should be used. (Figure 3). The compartment can be attached directly (Figure 12), or a starting collar can first be fitted to the furnace inlet. A butt or slip joint can be used. Securely attach the compartment to furnace inlet, using at least two of the mounting holes on each side of the compartment. 4. Using butt joint, attach duct work (normally an elbow) to the upstream side of air filter compartment. (Note the use of the sheet metal turning vanes inside the elbow to improve air distribution.) (Figure 13) Transition Fittings If the air duct does not fit the compartment 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 14). 6. Seal all joints in the return air system downstream from the air filter 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. 7. With the air filter compartment installed, re-install 4” filter and door. (Figure 2) MAINTENANCE For maximum efficiency, your air filter should be inspected once a month and changed if dirt loading is heavy. When changing is required, the following procedure should be used. 1. Remove door from air filter compartment. 2. Remove 4” filter and discard. 3. Insert new 4” filter by sliding it into the compartment. (Note direction of air flow.) 4. Replace door. Figure 11 Duct Figure 12 Mounting Holes Frame Turning Vanes Air Flow Figure 13 Vertical Section Tape All Joints Wood Block Figure 14 CAUTION ! The fi ber filter used in this cabinet for air cleaning must be replaced every 90 to 180 days. Your heating and cooling efficiency will decrease due to insuffi cient air fl ow when filter becomes dirty. 6 NOTES 7 White-Rodgers is a division of Emerson Electric Co. The Emerson logo is a trademark and service mark of Emerson Electric Co. ...
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