Assessments - 2, GPA: 3.5
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1. Disconnect all power to the furnace. DO NOT TOUCH THE CONTROL OR ANY WIRE CONNECTED TO THE CONTROL PRIOR TO DISCHARGING YOUR BODY’S ELECTROSTATIC CHARGE TO GROUND. 2. Firmly touch a clean, unpainted, metal surface of the furnace chassis which is close to the control. Tools held in a person’s hand during grounding will be satisfactorily discharged. 3. After touching the chassis you may proceed to service the control or connecting wires as long as you do nothing that recharges your body with static electricity (for example; DO NOT move or shuffle your feet, DO NOT touch ungrounded objects, etc.). 4. If you touch ungrounded objects (recharge your body with static electricity), firmly touch furnace again before touching control or wires. 5. Use this procedure for installed and uninstalled (ungrounded) furnaces. 6. Before removing a new control from its container, discharge your body’s electrostatic charge to ground to protect the control from damage. If the control is to be installed in a furnace, follow items 1. through 5. before bringing the control or yourself into contact with the furnace. Put all used AND new controls into containers before touching ungrounded objects. 7. An ESD service kit (available from commercial sources) may also be used to prevent ESD damage. CARE AND MAINTENANCE For continuing high performance and to minimize possible equipment failure, it is essential that periodic maintenance be performed on this equipment. Consult your local dealer as to proper frequency of maintenance and availability of a maintenance contract. WARNING: Never store anything on, near, or in contact with furnace, such as: 1. Spray or aerosol cans, rags, brooms, dust mops, vacuum cleaners, or other cleaning tools. 2. Soap powders, bleaches, waxes or other cleaning compounds, plastic or plastic containers, gasoline, kerosene, cigarette lighter fluid, dry cleaning fluids, or other volatile fluids. 3. Paint thinners and other painting compounds, paper bags or other paper products. A failure to follow this warning could result in corrosion of the heat exchanger, fire, personal injury, or death. WARNING: Turn off gas and electrical supplies to unit before performing any maintenance or service on it. Follow operating instructions on label attached to furnace. A failure to follow this warning could result in personal injury. The minimum maintenance that should be performed on this equipment is as follows: 1. Check and clean air filter each month or more frequently if required. Replace if torn. 2. Check blower motor and wheel for cleanliness each heating and cooling season. Clean as necessary. 3. Check electrical connections for tightness and controls for proper operation each heating season. Service as necessary. CAUTION: As with any mechanical equipment, personal injury can result from sharp metal edges, etc.; therefore, be careful when removing parts. I. CLEANING AND/OR REPLACING AIR FILTER The air filter arrangement may vary depending on the application. NOTE: If the filter has an airflow direction arrow, the arrow must point toward the blower. WARNING: Never operate unit without a filter or with filter access door removed. A failure to follow this warning could result in fire, personal injury, or death. To clean or replace filters, proceed as follows: 1. Downflow—filters installed in return-air duct. (see Fig. 4.) a. Turn off electrical supply before removing blower access door. b. Remove blower access door. c. Reach up behind top plate, tilt filters toward center of return-air plenum, remove filters. Replace filters if torn or damaged.. d. Furnaces are equipped with permanent, washable filters. e. Clean filters by spraying tap water through filter from opposite direction of airflow. —2— A88486 RETURN-AIR PLENUM ........................................................................ AIRFLOW ACCESS DOOR INSTALLATION POSITION OF FILTERS RETURN-AIR PLENUM ........................................................................ AIRFLOW ACCESS DOOR INSTALLATION POSITION OF FILTERS Fig. 4—Downflow Filter Arrangement f. Rinse and let dry. Oiling or coating of filters is not recommended or required. g. Reinstall filters. h. Replace blower access door and turn on electrical supply to furnace. 2. Upflow/Horizontal–filters installed in media cabinet adjacent to furnace (See Fig. 5.) a. Turn off electrical supply to furnace b. Remove filter cabinet door. c. Slide filter out of cabinet. d. If equipped with permanent, washable filter, clean filter by spraying cold tap water through filter in opposite direction of airflow. Rinse filter and let dry. Oiling or coating of the filter is not recommended. e. If equipped with factory-specified disposable media filter, replace only with media filter having the same part number and size. f. Slide filter into cabinet. g. Replace filter cabinet door. h. Turn on electrical supply to furnace. 3. Upflow/Horizontal–filter(s) installed in side(s) and/or bottom of blower compartment (See Fig. 5....
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