6- Place filter in bottom of blower compartment beneath rear filter clip. Press down on filter sides. Filter clips flex allowing filter to snap into place.
7- Replace blower access panel.
WARNING
Blower door must be securely in place when blower and burners are operating. Gas fumes, which could contain carbon monoxide, can be drawn into living space which could cause personal injury or death.
1- Turn off electric power to furnace.
2- Locate the filter door of the filter rack assembly.
3- Using the filter door pins, pull filter door, with filter at. tached, out of filter rack assembly. Remove filter door from filter by pulling up on securing tabs.
4- Clean filter with cold water and a mild soap. Direct wa. ter through filter in the opposite direction of air flow. Al. low filter to dry then spray with filter handicoater, avail. able from your Lennox dealer, prior to reinstallation.
5- Position filter door on end of filter so that the thumb tab side of the filter door is away from the furnace. Check for correct air flow position. Squeeze thumb tabs to secure filter to door.
6- Guide filter and filter door into the filter rack installed on side of furnace. Push door into filter rack until secure.
REMOVING / REPLACING FILTER DOOR
FILTER DOOR | TAB |
PIN |
|
FILTER DOOR | FILTER |
|
FILTER DOOR
PIN
TAB
FIGURE 5
Seasonal Inspections
A qualified service technician should inspect the com. plete system each season (heating and cooling). The fol. lowing maintenance procedures should be conducted by a qualified service technician. Do not attempt to service the unit in any way.
Venting System
Annually (before heating season) inspect furnace venting system, draft hood, vent cap, heat exchanger, and burners for corrosion, deterioration, or deposits of debris. Remove any obstructions.
Inspect furnace venting system to make sure it is in place, physically sound, and without holes, corrosion, or blockage. Vent connector must be in correct position, sloped upward and be physically sound without holes or excessive corrosion.
Inspect furnace return air duct connection to ensure duct is sealed to the furnace and terminates outside the space con. taining the furnace.
Inspect the physical support of the furnace to guarantee that it is sound without sagging, cracks or gaps around base and it maintains seal between base and support.
During a seasonal check the service technician will inspect the indoor blower and the burner flames along with the vent. ing system.
Blower
Check and clean blower wheel for any debris. Blower motor is
Burner Flame
Burner Flame
Start burner and allow to operate for a few minutes to es. tablish normal burning conditions. Check burner flame by observation. Flame should be predominantly blue and strong in appearance.
CAUTION
To ensure proper operation, a qualified technician should periodically check the burner flame.
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