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Remove screw holding contact spring to cells and reinstall at opposite end (See Fig. 17). Be sure all airflow arrows are pointing in the direction of the airflow through the air cleaner and that the prefilters are on the entering-air side. 3. Deform prefilter guide on side opposite prefilters so that prefilters may not be reinstalled incorrectly. 4. Replace power door by first inserting bottom tab into place on bottom edge of door opening. Push top of door and guide door attachment knob screw into threads. TUrn knob clockwise until screw engages threads in casing. Thrn knob clockwise until door is secure. Ensure good electrical contact between power door and unit components. 5. Unit can be installed with airflow through cabinet in either direction. Apply airflow decal (provided) to cabinet, observing actual airflow direction. See Fig. 17. STEP 4. STARTUP AND ADJUSTMENTS The electronic components of the unit convert the incoming VAC to VDC power supply. Unfiltered, contaminated air passes through an aluminum mesh prefilter which removes larger airborne particles and distributes the air uniformly across the ion-izer-collector assembly. The air passes through the ionizer and is charged with 7300 VDC. The ionizer imparts a positive electrical charge to the remaining contaminants. As the air continues through the collector section, the charged contaminants are attracted to the alternately charged collector plates. The charged contaminants are electrostatically held by the collector, thus purifying the airstream. 1. Ensure that entire electronic air cleaner is clean, dry, and free of foreign objects. 2. Restore power to system. 3. Move ON-OFF switch on power door to ON position. 4. Set room thermostat to start blower. 7 Corporate Electronic Condensing Upflow Gas Furnace A91490 TRANSFORMER Corporate Continuous Pilot Gas Furnace ELECTRONIC AIR CLEANER TERMINALS Corporate Induced Draft and HSI Condensing Furnace Fig. 16—Internal Furnace Electrical Connections for Electronic Air Cleaners 8 A89420 Fig. 17—Final Assembly Detail 5. Check to see if operation light is glowing. This indicates proper power to the cells. NOTE: Leave these Installation Instructions with the owner to enable the owner to perform maintenance and routine service. STEP 5. MAINTENANCE AND ROUTINE SERVICE Your new electronic air cleaner requires periodic maintenance for optimum performance. You may perform this service or have your serviceman handle it for you. Cleaning of the cell assembly and prefilter is required two or three times a year. Frequency will depend on size of home, number of occupants, smoking habits, etc. The odor of ozone may be noticeable during operation of an electronic air cleaner. A somewhat higher ozone generation rate during the first week or two of operation may be caused by sharp edges on some of the new high-voltage parts. Normal use dulls these sharp edges in a short time. The odor of ozone is detectable by an average person at levels as low as 0.003 to 0.010 parts per million (PPM). The concentration of ozone produced in a home by an electronic air cleaner ranges from 0.006 to 0.020 PPM. Average concentrations of ozone in the air of major cities range from 0.020 to 0.040 PPM and even higher. This is well above the level produced by an electronic air cleaner. Because normal maintenance (cleaning) is so simple, most homeowners will choose to personally perform the necessary operations. Clean the unit where dust from air cleaner cells will not soil carpets or the floor. A CAUTION Before removing the electronic cells, be sure to deenergize the system fan to avoid any possibility of circulating unfiltered air back into the system. To gain access to the prefilter and air cleaner cells, simply push power switch to OFF position and remove the power door. Lay it to one side. Pull out the first-stage prefilters and vacuum from entering-air side, or wash in detergent and water. Let dry thoroughly. Reinstall. Do not spray prefilters with any filter coatings. A. Cleaning the Cell For optimum performance, the electronic cells must be washed regularly to remove the dirt cleaned from the air. The required frequency of cell washing varies from one environment to another, depending on a large number of variables. In nearly all cases, the correct period is between 1 and 6 months. Where building infiltration and internal generation of dust is low, as in a smaller home, washing every 5 or 6 months may be adequate. Where there is considerable infiltration, cooking, dust, tobacco smoking, more frequent washing will be required. If a very heavy buildup of dirt is found on the collector plates, or the cell is not clean after washing, it should be cleaned more often. If there is only light dirt on collector plates, the period between washings can probably be lengthened. The electronic plate cells may be washed a number of different ways, depending on homeowner preference. 1. Automatic Dishwasher Washing—The easi...

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