Carrier 58CTA/CTX Filter Size Information IN. / MM, Cleaning AND/OR Replacing AIR Filter

Page 48

58CT

TABLE 17 – FILTER SIZE INFORMATION (IN. / MM)

 

 

 

 

 

FILTER SIZE

 

 

 

FURNACE CASING WIDTH

 

SIDE

 

 

BOTTOM

 

FILTER TYPE

 

 

 

RETURN

 

 

RETURN

 

 

14---1/2 (368)

 

16 x25 x 3/4

 

 

14 x25 x 3/4

 

Washable*

 

(406 x635 x 19)

 

 

(356 x635 x 19)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

17---1/2 (445)

 

16 x25 x 3/4

 

 

16 x25 x 3/4

 

Washable*

 

(406 x635 x 19)

 

 

(406 x635 x 19)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

21 (533)

 

16 x25 x 3/4

 

 

20 x25 x 3/4

 

Washable*

 

 

(406 x635 x 19)

 

 

(508 x635 x 19)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24 (610)

 

16 x25 x 3/4

 

 

24 x25 x 3/4

 

Washable*

 

 

(406 x635 x 19)

 

 

(610 x635 x 19)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* Recommended

 

 

 

 

 

 

 

 

 

** Some furnaces may have 2 filters.

 

 

 

 

 

 

 

CLEANING AND/OR REPLACING AIR FILTER

 

To ensure long life and high efficiency, clean accumulated dirt

The air filter arrangement will vary depending on the application.

 

and grease from blower wheel and motor annually.

 

The inducer and blower motors are pre-lubricated and require no

NOTE: If the filter has an airflow direction arrow, the arrow

 

must point towards the blower.

 

 

 

additional lubrication. These motors can be identified by the

 

 

 

absence of oil ports on each end of the motor.

 

 

 

 

 

 

!

CAUTION

 

 

 

Clean blower motor and wheel as follows:

 

 

1.

Turn off electrical supply to furnace.

CUT HAZARD

 

 

2.

Loosen the thumbscrew from outer door and remove outer

 

 

 

 

door.

 

 

Failure to follow this caution may result in personal injury.

 

 

 

 

 

 

3.

For downflow or horizontal furnaces having vent pipes

Sheet metal parts may have sharp edges or burrs. Use care

 

 

 

 

within the furnace that pass in front of the blower access

and wear appropriate protective clothing, safety glasses and

 

 

 

door:

 

 

gloves when handling parts and servicing furnaces.

 

 

 

 

 

 

 

 

a. Disconnect vent connector from furnace vent elbow.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

b. Disconnect and remove short piece of vent pipe from

Media cabinet filter procedures:

 

 

 

 

within furnace.

 

 

NOTE: Media Cabinet is included with two-stage furnace.

4.

Remove 2 screws from blower access door and remove

1. Turn off electrical supply to furnace before removing filter

 

 

blower access door.

 

 

5.

Disconnect blower leads from furnace control. Record

access door.

 

 

2. Remove filter cabinet door.

 

 

 

 

wire color and location for reassembly. All other factory

 

 

 

 

wires can be left connected, but field thermostat connec-

3. Slide filter out of cabinet.

 

 

 

 

 

 

 

 

tions may need to

be disconnected depending on their

4. If equipped with permanent, washable 3/4-in. (19 mm) fil-

 

 

 

 

length and routing.

 

 

ter, clean filter by spraying cold tap water through filter in

 

 

 

 

6.

Remove 2 screws holding control box to blower shelf.

opposite direction of airflow. Rinse filter and let dry. Oil-

7.

Hang control box from front of furnace casing and away

ing or coating of the filter is not recommended. See Table

 

 

from blower compartment.

17 for size information.

 

 

 

 

 

 

8.

Remove 2 screws

holding blower assembly to blower

5. If equipped with factory-specified disposable media filter,

 

 

deck and slide blower assembly out of furnace.

replace only with media filter having the same part num-

 

 

9.

Clean blower wheel and motor using a vacuum with soft

ber and size. For expandable replacement media, refer to

the instructions included with the replacement media. If

 

 

brush attachment. Blower wheel blades may be cleaned

equipped with accessory KGAFR0301ALL external filter

 

 

with a small paint or flux brush. Do not remove or disturb

rack. See Table 17.

 

 

 

 

balance weights (clips) on blower wheel blades.

6. Slide filter into cabinet.

 

 

10.

Vacuum any loose dust from blower housing, wheel and

7. Replace filter cabinet door.

 

 

 

 

motor.

 

 

 

 

11.

If a greasy residue is present on blower wheel, remove

8. Turn on electrical supply to furnace.

 

 

BLOWER MOTOR AND WHEEL

wheel from the blower housing and wash it with an appro-

priate degreaser. To remove 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.

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

a.Disconnect capacitor wires (if equipped) 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 reassembling).

e.Remove blower wheel from housing.

f.Clean wheel and housing.

12.Reassemble motor and blower by reversing steps 11e, through 11a. Be sure to reattach ground wire to the blower housing.

48

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Contents Ama Safety Considerations Furnace Reliability HazardCUT Hazard Dimensions IntroductionClearances to Combustibles Electrostatic Discharge ESD Precautions Procedure Codes and StandardsLocation GeneralCarbon Monoxide Poisoning and Unit Damage Hazard FIRE, Injury or Death Hazard Fire HazardProperty Damage Hazard Location Relative to Cooling EquipmentAIR for Combustion Ventilation Furnace Corrosion HazardCarbon Monoxide Poisoning Hazard Outdoor Combustion Air MethodAir for Combustion, Ventilation, and Dilution for Outdoors Installation Upflow InstallationDownflow Installation Horizontal InstallationFIRE, EXPLOSION, and Carbon Monoxide Poisoning Hazard Suspended Furnace SupportPlatform Furnace Support Roll-Out ProtectionOpening dimensions In. mm Duct FlangesHorizontal Unit Suspension Filter Arrangement Carbon Monoxide Poisoning Hazard AIR DuctsGeneral Requirements Ductwork Acoustical Treatment Supply Air ConnectionsAir Delivery CFM With Filter FurnaceSpeed External Static Pressure IN. WC Size Inlet Air Delivery CFM With Filter* Downflow FurnacesReturn Air Connections GAS Piping Fire or Explosion HazardUpflow Return Air Configurations and Restrictions Maximum Capacity of Pipe Furnace Damage HazardWiring Electrical Connections Electrical Shock HazardElectrical Shock and Fire Hazard Furnace MAY not Operate HazardElectrical Data BOX RelocationElectrical Connection to J-BOX Power Cord Installation in Furnace J-BOX BX. Cable Installation in Furnace J-BOXElectrical Box on Furnace Casing Side. See Fig Fire or Electrical Shock HazardTwo-Stage Furnace with Two-Speed Air Conditioner See notes 2, 11, and 12 on the page following these figures Accessories VentingGeneral Venting Requirements Masonry Chimney RequirementsChimney Inspection Chart Appliance Application Requirements Internal Area of ChimneyVent Height Upflow Application-Vent Elbow Up Downflow Application-Vent Elbow Up then Left Horizontal Left Application Vent Elbow Left Furnace Vent Diameter Vent Height Orientation INPUTBTUH/HRUsing Tin Snips to Cut Tie Points START-UP, ADJUSTMENT, and Safety Check GeneralBurn Hazard Start-Up Procedures AdjustmentsStage Furnace Setup Switch Description Fire and Explosion HazardAltitude Derate Multiplier for U.S.A Redundant Automatic Gas Control ValveOrifice Hole Gas Rate cu ft. /hr Furnace Overheating HazardSeconds Size of Test Dial For Revolution Speed Selection Color Speed AS ShippedCheck Safety Controls ChecklistStage Furnace Blower OFF delay Setup Switch Desired Heating Mode Setup Switch Blower OFF Delay SECA08485 Orifice Size and Manifold Pressures In wc for Gas Input Rate A08219 A08219A Service and Maintenance Procedures IntroductionCare and Maintenance Carbon Monoxide Poisoning and Fire HazardWiring Diagram Cleaning AND/OR Replacing AIR Filter Filter Size Information IN. / MMBlower Motor and Wheel Cleaning Heat Exchanger Unit Damage HazardSequence of Operation Igniter Position-Top View58CT Single-Stage Thermostat and Two-Speed Cooling Adaptive Mode Thermidistat ModeSingle-Speed Cooling Wiring Diagrams TroubleshootingContinuous Blower Mode Troubleshooting Guide 2-Speed KitAdapter Chimneyin Usedswitch Shutoffvent Blocked Catalog No58CT---10SI