Bryant 310AAV Media cabinet filter procedures, Blower Motor and Wheel Electrical Shock Hazard

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!CAUTION

CUT HAZARD

Failure to follow this caution may result in personal injury.

Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety glasses and gloves when handling parts and servicing furnaces.

Media cabinet filter procedures:

NOTE: Media cabinet or 3/4-in. (19 mm) filter rack are accessories and are not included from the factory.

1.Turn off electrical supply to furnace before removing filter access door.

2.Remove filter cabinet door.

3.Slide filter out of cabinet.

4.If equipped with permanent, washable 3/4-in. (19 mm) 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. See Table 14 for size information.

5.If equipped with factory-specified disposable media filter, replace only with media filter having the same part number and size. For expandable replacement media, refer to the instructions included with the replacement media.

6.Slide filter into cabinet.

7.Replace filter cabinet door.

8.Turn on electrical supply to furnace.

BLOWER MOTOR AND WHEEL

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Blower access door switch opens 115-v power to control. No component operation can occur unless switch is closed. Caution must be taken when manually closing this switch for service purposes.

NOTE: The blower wheel should not be dropped or bent as balance will be affected.

The following steps should be performed by a qualified service agency.

To ensure long life and high efficiency, clean accumulated dirt and grease from blower wheel and motor annually.

The inducer and blower motors are pre-lubricated and require no additional lubrication. These motors can be identified by the absence of oil ports on each end of the motor.

Clean blower motor and wheel as follows:

1.Turn off electrical supply to furnace.

2.Remove outer door.

3.For downflow or horizontal furnaces having vent pipes within the furnace that pass in front of the blower access door:

a.Disconnect vent connector from furnace vent elbow.

b.Disconnect and remove short piece of vent pipe from within furnace.

4.Remove 2 screws from blower access door and remove blower access door.

5.All factory wires can be left connected, but field thermo- stat connections may need to be disconnected depending on their length and routing.

6.Remove 2 screws holding blower assembly to blower deck and slide blower assembly out of furnace.

7.Clean blower wheel and motor using a vacuum with soft brush attachment. Blower wheel blades may be cleaned with a small paint or flux brush. Do not remove or disturb balance weights (clips) on blower wheel blades.

8.Vacuum any loose dust from blower housing, wheel and motor.

9.If a greasy residue is present on blower wheel, remove wheel from the blower housing and wash it with an appro- priate degreaser. To remove wheel:

NOTE: Before disassembly, mark blower motor, and blower housing so motor and each arm is positioned at the same location during reassembly.

a.Disconnect capacitor wires and ground wire attached to blower housing.

b.Remove screws securing cutoff plate and remove cutoff plate from housing.

c.Loosen set screw holding blower wheel on motor shaft (160+/-20 in.-lb. when reassembling).

d.Remove bolts holding motor to blower housing and slide motor out of wheel (40+/-10 in.-lb. when reas- sembling).

e.Remove blower wheel from housing.

f.Clean wheel and housing.

10.Reassemble motor and blower by reversing steps 9f through 9a, finishing with 9a. Be sure to reattach ground wire to the blower housing.

11.Verify that blower wheel is centered in blower housing and set screw contacts the flat portion of the motor shaft. Loosen set screw on blower wheel and reposition if neces- sary.

12.Spin the blower wheel by hand to verify that the wheel does not rub on the housing.

13.Reinstall blower assembly in furnace.

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in shortened heat exchanger life.

Heating fan speed(s) MUST be adjusted to provide proper air temperature rise as specified on the rating plate. Recommended operation is at the midpoint of the rise range or slightly above. Refer to SET TEMPERATURE RISE under START-UP, ADJUSTMENT, and SAFETY CHECK.

14.Connect thermostat leads if previously disconnected.

15.To check blower for proper rotation: a. Turn on electrical supply.

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury, or death.

Blower access door switch opens 115-v power to furnace control. No component operation can occur unless switch is closed. Exercise caution to avoid electrical shock from exposed electrical components when manually closing this switch for service purposes.

b. Manually close blower access door switch.

310AAV

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Contents 310AAV/JAV Safety Considerations Furnace Reliability HazardCUT Hazard 20/060155 Inlet Width SizeSafety IntroductionCodes and Standards Location Electrostatic Discharge ESD Precautions ProcedureFire and Explosion Hazard Multipoise OrientationsPersonal Injury AND/OR Property Damage Hazard AIR for Combustion VentilationFire Hazard Location Relative to Cooling EquipmentOutdoor Combustion Air Method Carbon Monoxide Poisoning HazardOther than FAN-ASSISTED Total Upflow Installation InstallationBottom Return Air Inlet Side Return Air InletLeveling Legs Leveling Legs If Desired Downflow InstallationPlatform Furnace Support Suspended Furnace SupportRoll-Out Protection Filter Arrangement Carbon Monoxide and Poisoning HazardAIR Ducts Opening Dimensions In. mmGeneral Requirements Ductwork Acoustical Treatment Supply Air ConnectionsAir Delivery CFM with Filter Furnace RETURN---AIR SpeedSize Inlet Furnace ⎯ Air Delivery CFM with FilterHorizontal Unit Suspension Typical Attic Installation Downflow Return Air Configurations and Restrictions GAS Piping Fire or Explosion Hazard Return Air ConnectionsMaximum Capacity of Pipe Furnace Overheat HazardElectrical Connections Electrical Shock Hazard Burner and ManifoldElectrical Shock and Fire Hazard WiringFurnace MAY not Operate BOX RelocationPower Cord Installation in Furnace J-BOX BX Cable Installation in Furnace J-BOXElectrical Data Furnace Control Accessories VentingGeneral Venting Requirements Masonry Chimney Requirements Chimney Inspection Chart Additional Venting Requirements Appliance Application RequirementsBurn Hazard Sidewall VentingVent Height Internal Area of ChimneyDiameter Height Orientation Input BTUH/HR Upflow Application-Vent Elbow UpDownflow Application-Vent Elbow Up then Left Horizontal Right Application-Vent Elbow Right Start-Up Procedures START-UP, ADJUSTMENT, and Safety CheckAdjustments GeneralNever Assume Orifice SIZE. Always Check and Verify Furnace Damage HazardFurnace Overheating Hazard Speed SelectionWiring Diagram Gas Control Valve Orifice Hole Checklist Check Safety ControlsGas Rate cu ft./hr Filter Size Information In. / mmSeconds for Size of Test Dial Revolution BTU/CU FT Specific Gravity of Natural GAS Altitude RangeSpecific Gravity of Natural GAS Altitude Range Heat Value AT Altitude Altitude Specific Gravity of Natural GASIntroduction Service and Maintenance ProceduresCare and Maintenance Cleaning AND/OR Replacing AIR FilterCarbon Monoxide Poisoning and Fire Hazard Media cabinet filter procedures Blower Motor and Wheel Electrical Shock HazardUnit Damage Hazard Igniter Position-Side View Cleaning Heat ExchangerHeating Sequence of OperationTroubleshooting Wiring DiagramsCooling Mode Continuous Blower ModeTroubleshooting Guide Chimneyin KitAdapter VentBlocked usedswitch Description Part Number Accessory ListParts Replacement Information Guide
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