Carrier 58YAV Electrostatic Discharge ESD Precautions Procedure, Care and Maintenance

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

PROCEDURE

Electrostatic discharge can affect electronic components. Take precautions during furnace installation and servicing to protect the furnace electronic control. Precautions will pre- vent electrostatic discharges from personnel and hand tools which are held during the procedure. These precautions will help to avoid exposing the control to electrostatic discharge by putting the furnace, the control, and the person at the same electrostatic potential.

1.	Disconnect all power to the furnace. DO NOT TOUCH THE
	CONTROL OR ANY WIRE CONNECTED TO THE CON-
	TROL PRIOR TO DISCHARGING YOUR BODY'S ELEC-
	TROSTATIC 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

Turn off gas and electrical supplies to unit before performing any maintenance or service on it. Follow operating instruc- tions 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.

As with any mechanical equipment, personal injury can result from sharp metal edges, etc.; therefore, be careful when removing parts.

Step 1ÐCleaning and/or Replacing Air Filter

The air filter arrangement may vary depending on application.

NOTE: If the filter has an airflow direction arrow, the arrow must point toward the blower.

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.Filters installed in media cabinet adjacent to furnace (see Fig. 2)

also be used to prevent ESD damage.

CARE AND MAINTENANCE

For continuing high performance and to minimize possible equip- ment 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.

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 com- pounds, 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.

MOUNTING

SCREWS

RELIEF

BOX

GAS VALVE

CONTROL

W Y R G

FLUE

COLLAR

BLOCKED

VENT

SAFEGUARD

PRESSURE

SWITCH

FLUE

COLLECTOR

BOX

FILTER

RETAINER

WASHABLE

FILTER

A99284

Fig. 2ÐModel 58YAV Upflow Furnace

a.Turn off electrical supply to furnace

b.Remove filter cabinet door.

c.Slide filter out of cabinet.

2