FURNACE USER MAINTENANCE
Before proceeding, be sure the area is well ventilated. Turn the thermostat OFF. If the blower is running, wait until it stops automatically. Turn OFF the gas and electrical power supplies to the furnace. Check all metal parts and surfaces to be sure they have cooled to room temperature before you begin.
Every time the filters are changed the following items should be visually inspected:
•Check combustion air and vent pipe for blockage or leakage.
•Check all components to be sure they are in good condition and that there are no obvious signs of deterioration.
•Check the drain lines to make sure there are no cracks or leaks.
•Check for dirt or lint on any surfaces or on components. Do not try to clean any of the surfaces or components. Cleaning of the fur- nace and its components must be done by a qualified service pro- fessional.
If, during the inspection of your furnace, you find any of the following conditions:
•Excessive amounts of dust and lint on components.
•Damaged or deteriorated components or surfaces.
•Leaks or blockage in the vent pipe passages.
•Water on any surface inside or outside of the furnace.
Do not operate the furnace, call a certified dealer / servicing contractor to check and / or clean your furnace, or for more information if you have questions about the operation of your furnace.
If all components appear to be in good operating condition, replace the front panels. Turn ON the gas and electrical power supplies to the fur- nace, and set thermostat to the desired temperature.
SECTION II: SERVICE AND MAINTENANCE MANUAL
SAFETY SECTION
The following safety rules must be followed when servicing the furnace.
ELECTRIC SHOCK, FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could result in dangerous operation, serious injury, death or property damage.
Improper servicing could result in dangerous operation, serious injury, and death or property damage.
•Before servicing, disconnect all electrical power to the fur- nace.
•When servicing controls, label all wires prior to discon- necting. Reconnect wires correctly.
•Verify proper operation after servicing.
FURNACE MAINTENANCE SECTION
The furnace should be cleaned and adjusted by a certified dealer or qualified service contractor once a year or before the start of every heating season. The following items must be cleaned and serviced or replaced if there are signs of deterioration.
1.The vent terminal screen (if applicable).
2.The furnace vent and combustion air intake passageways. Should it be necessary to service the vent/air intake system, the manufac- turer recommends this service be conducted by a qualified service agency. The operation of this appliance requires the reassembly and resealing of the vent/air intake system.
3.The furnace burners, ignitor and flame sensor.
4.The condensate collection and disposal system. If any disassem- bly of components containing flue or vent gases is required, a qualified service agency must perform the service.
Air Filters
The filters should be checked every 3 months. On new construction, check the filters every week for the first four weeks and every three weeks after that, especially if the indoor fan is running continuously. When replacing the filter(s), refer to Table 1 to be sure you install the right size filter for your furnace. Dirty filters greatly restrict the flow of air and may cause damage to the moving parts of the furnace. If the filters become clogged the heat exchangers and blower motor could overheat resulting in a potentially dangerous situation.
Never operate your furnace without a suitable air filter.
Removing Filters
Internally Mounted Air Filters
Most upflow furnaces have their filters located on the side or bottom of the furnace in a filter wire retainer located inside the blower compart- ment. To check filters located in the blower compartment:
1.Remove the upper furnace door by lifting up. Pull out bottom of door and lower from furnace.
2.Remove the blower compartment panel by lifting up.
3.The filters will be located on the bottom or the one of the sides. To remove
4.Reverse the procedure to reinstall filters.
POSITION WIRE RETAINER
(IF PROVIDED) UNDER FLANGE
| IF FILTER |
| |
CLIPS | PROVIDED | ||
|
| ||
RIGHT SIDE |
| FURNACE | |
INSTALLATION | |||
FRONT | |||
SHOWN |
| ||
|
| ||
FIGURE 6: Upflow Internal Filter Retainer
Externally Mounted Air Filters
Some installations may have the air filter in a rack attached to the cas- ing of the furnace or placed in the return air duct. You can gain access to the filter by pulling on the door or unscrewing the retaining screw, then slide the filter(s) out of its channel. Replace throw away filter(s) with the same size new filter(s). Throw away filter(s) may be replaced with cleanable filter(s) at this time. Cleanable filter(s) may be cleaned as described in the manufacturer instructions or as described below and then
To replace the filter after cleaning you must do the following:
1.Slide filter into place.
2.Snap the door on or place the door in position and tighten the retaining screws, if provided.
3.Make sure the door is secure to the end of the filter rack.
4 | Unitary Products Group |
