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 fur- nace chassis which is close to the control. Tools held in a person’s hand during grounding will be satisfactorily dis- charged.
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 ungroun- ded objects, etc.).
4.If you touch ungrounded objects (recharge your body with static electricity), firmly touch furnace again before touch- ing control or wires.
5.Use this procedure for installed and uninstalled (ungroun- ded) 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 con- trol or yourself into contact with the furnace. Put all used AND new controls into containers before touching un- grounded 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 furnace failure, it is essential that maintenance be performed annually. Consult your local dealer for maintenance and maintenance contract availability.
!WARNING
ELECTRICAL SHOCK EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death or property damage.
Turn off the gas and electrical supplies to the unit and install lock out tags before performing any maintenance or service. Follow the operating instructions on the label attached to the furnace.
The minimum maintenance that should be performed on this equipment is as follows:
1.Check and clean or replace air filter each month as needed.
2.Check blower motor and wheel for cleanliness annually.
3.Check electrical connections for tightness and controls for proper operation each heating season. Service as necessary.
4.Check for proper condensate drainage. Clean as necessary.
5.Check for blockages in
6.Check burners for cleanliness annually.
!CAUTION
CUT HAZARD
Failure to follow this caution may result in personal injury.
Be careful of sharp metal edges, etc. Use care and wear protective clothing, gloves, and safety glasses when removing parts.
Step 1 — Cleaning and/or Replacing Air Filter
The air filter arrangement may vary depending on the application or orientation. See Tables 1 and 2 for filter size and type information.
!WARNING
FIRE, CARBON MONOXIDE POISONING
HAZARD
Failure to follow this warning could result in personal injury, death or property damage.
Never operate unit without a filter or with the blower access panel removed. Operating a unit without a filter or with the blower access door removed could cause damage to the furnace blower motor. Dust and lint on internal parts of furnace can cause a loss of efficiency.
NOTE: If the filter has an airflow direction arrow, the arrow must point toward the blower.
To clean or replace filters, proceed as follows:
If filter is installed in filter cabinet adjacent to furnace:
1.Turn off electrical supply to furnace.
2.Remove filter cabinet door.
3.Slide filter out of cabinet.
4.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.
5.If equipped with factory specified disposable media filter, replace only with a factory specified media filter of the same size.
6.Slide filter into cabinet.
7.Replace filter cabinet door.
8.Turn on electrical supply to furnace.
If filter is installed in furnace blower compartment:
1.Turn off electrical supply to furnace.
2.Remove main furnace door and blower access panel.
3.Release filter retainer wire. (See Fig. 3 or 4.)
NOTE: Filters shown in Fig. 3 and 4 can be in furnace blower compartment or in filter cabinet, but not in both.
4.Slide filter out of furnace.
5.Furnaces are equipped with permanent, washable filter(s). Clean filter by spraying cold tap water through filter in op- posite direction of airflow.
6.Rinse filter and let dry. Oiling or coating filter is not recom- mended.
7.Slide filter into furnace.
8.Recapture filter retaining wire.
9.Replace blower access panel and main furnace door.
10.Turn on electrical supply to furnace.
Step 2 — Blower Motor and Wheel Maintenance
To ensure long life, economy, and high efficiency, clean accumulated dirt and grease from blower wheel and motor annually.
The inducer and blower motors are
The following items should be performed by a qualified service technician.
Clean blower motor and wheel as follows:
1.Turn off electrical supply to furnace.
2.Remove main furnace door and blower access panel.
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