MOUNTING |
| |
SCREWS |
| |
| DRAFT | |
| SAFEGUARD | |
| SWITCH | |
RELIEF | FLUE | |
COLLECTOR | ||
BOX | ||
BOX | ||
| ||
| GAS | |
| VALVE | |
| PILOT | |
CONTROL |
| |
BOX | SPEED | |
| ||
| SELECTOR | |
| FILTER | |
| RETAINER | |
| WASHABLE | |
| FILTER | |
| A92178 |
Fig. 4ÐModel 58GFA Upflow
b.Remove blower access door after removing 2 screws.
c.Reach up behind top plate, tilt filters toward center of
d.Furnaces are equipped with permanent, washable filters. Clean filters with tap water. Spray water through filter in opposite direction of airflow.
e.Rinse and let dry. Oiling or coating of filters is not recommended or required.
f.Reinstall filters.
g.Replace access door and secure with 2 screws.
h.Restore electrical power to furnace.
2.Upflow
Each furnace requires 1 or 2 filters which are installed in the blower compartment. (See Fig. 4.)
To remove filters for cleaning or replacement, proceed as follows:
a.Disconnect electrical power before removing access doors.
b.Remove blower and control access doors.
c.Release filter retainer from clip at front of furnace casing. (See Fig. 4.) For side return, clips may be used on either or both sides of the furnace.
d.Slide filter out.
e.Furnaces are equipped with permanent, washable filters. Clean filter with tap water. Spray water through filter in opposite direction of airflow.
f.Rinse and let dry. Oiling or coating of filter is not recommended or required.
g.Reinstall filter.
h.Replace access doors.
i.Restore electrical power to furnace.
| AUXILIARY |
SPEED | LIMIT SWITCH |
(NOT VISIBLE) | |
SELECTOR |
|
| VENT PIPE |
MOUNTING | ENCLOSURE |
SCREWS |
|
| CONTROL |
| BOX |
| DRAFT |
RELIEF | SAFEGUARD |
SWITCH | |
BOX |
|
| FLUE |
| COLLECTOR |
| BOX |
A92179
Fig. 5ÐModel 58DFA Downflow
BLOWER MOTOR AND WHEEL Ð For long life, economy, and high efficiency, clean accumulated dirt and grease from the blower wheel and motor annually.
The following steps should be performed by a qualified service technician:
Some motors have prelubricated sealed bearings and require no lubrication. These motors can be identified by the absence of oil ports on each end of the motor. For motors with oil ports, lubricate motor every 5 years if motor is used on intermittent operation (thermostat FAN switch in AUTO position), or every 2 years if motor is in continuous operation (thermostat FAN switch in ON position).
Remember to disconnect the electrical supply before removing access doors.
Clean and lubricate as follows:
1.Remove 2 screws from blower access door (downflow furnace only). Remove blower access door.
2.Remove vent pipe enclosure (downflow furnace only) and disconnect short piece of vent pipe from relief box.
3.Disconnect wires from auxiliary limit on blower housing (downflow furnace only).
4.Remove control box.
5.Remove electrical leads from numbered side of blower speed selector. (See Fig. 4 and 5.) Note location of wires for reassembly.
6.Remove screws holding blower assembly to blower deck and slide blower assembly out of furnace.
7.Squeeze side tabs of blower speed selector and pull it out of blower housing.
8.Loosen screw in strap holding motor capacitor to blower housing and slide capacitor out from under strap.
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