Bryant 580F IX. Adjust EVAPORATOR-FAN Speed, Direct-Drive Motors, Belt-Drive Motors

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IX. STEP 9 — ADJUST EVAPORATOR-FAN SPEED

Adjust evaporator-fan rpm to meet jobsite conditions. Table 8 shows fan rpm at motor pulley settings. Table 9 shows motor performance. Refer to Tables 10-33 to determine fan speed settings.

A. Direct-Drive Motors

The evaporator-fan motor factory speed setting is shown on label diagram affixed to base unit. If other than factory set- ting is desired, refer to label diagram for motor reconnection. See Fig. 33 for direct drive motor location.

B. Belt-Drive Motors

Fan motor pulleys are factory set for speed shown in Table 1. See Fig. 34 for belt drive motor location.

NOTE: Before adjusting fan speed, make sure the new fan speed will provide an air temperature rise range as shown in Table 1.

To change fan speed:

1.Shut off unit power supply and tag disconnect.

2.Loosen belt by loosening fan motor mounting nuts. See Fig. 34.

3.Loosen movable pulley flange setscrew (see Fig. 35).

4.Screw movable flange toward fixed flange to increase speed and away from fixed flange to decrease speed. Increasing fan speed increases load on motor. Do not exceed maximum speed specified in Table 1.

5.Set movable flange at nearest keyway of pulley hub and tighten setscrew. (See Table 1 for speed change for each full turn of pulley flange.)

To align fan and motor pulleys:

1.Loosen fan pulley setscrews.

2.Slide fan pulley along fan shaft.

3.Make angular alignment by loosening motor from mounting.

To adjust belt tension:

1.Loosen fan motor mounting nuts.

2.Slide motor mounting plate away from fan scroll for proper belt tension (1/2-in. deflection with 8 to 10 lb of force).

3.Tighten motor mounting nuts.

4.Adjust bolt and tighten nut to secure motor in fixed position.

Fig. 33 — Direct-Drive Motor Mounting

MOTOR MOUNTING

PLATE NUTS

Fig. 34 — Belt Drive Motor Mounting

Fig. 35 — Evaporator-Fan Pulley Adjustment

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Contents Important Read Before Installing ContentsSafety Considerations InstallationBase Unit Dimensions 580F036-072 Base Unit Dimensions 580F073 III. Install External Trap for CONDEN- Sate Drain Alternate Unit SupportII. Field Fabricate Ductwork IV. RIG and Place UnitUnit Size Accessory CRRFCURB001A01 Connector ALT Accessory Drain GASPKG. Accy Hole Power CRRFCURB002A01Install Flue Hood VI. Install GAS PipingUnit 580F MAX Weight Rigging DetailsPhysical Data Furnace Section Freeze Protection Thermostat FOUTDOOR-AIR Inlet Screens RETURN-AIR FiltersField Power Supply Field Control WiringHeat Anticipator Settings VII. Make Electrical ConnectionsPower Wiring Connections Electrical Data Without Convenience Outlet RLA LRA FLA MCA MOCP†Electrical Data With Convenience Outlet VIII. Adjust FACTORY-INSTALLED Options Manual Outdoor-Air DamperOptional EconoMi$er+ Hood BOXBracket Oarh IAQOAT IarhEconoMi$er+ Controller Wiring Damper MovementThermostats EconoMi$er+ Field-Installed Accessories Outdoor Air Temperature OAT Sensor ProvidedSupply Air Temperature SAT Sensor Provided Return Air Temperature RAT SensorIndoor Air Quality Voltage Setting Outdoor Air Humidity SensorTemperature Resistance Range ResolutionEnthalpy Changeover Settings Occupied/Unoccupied Switch Power ExhaustRemote EconoMi$er+ Enable Control Indoor Air Humidity SensorCO2 Sensor Configuration Full OccupancyVentilation Rate Ventilation for PeopleIX. Adjust EVAPORATOR-FAN Speed Direct-Drive MotorsBelt-Drive Motors Fan Rpm at Motor Pulley Settings Motor DataExternal Static Pressure in. wg Cfm Rpm Bhp Watts 900 768870 958External Static Pressure in. wg Cfm Rpm Bhp Watts 9551181 970 1073Low Speed 802 370840 432 802 370 912 489 624773 935967 579 663757 856Airflow Low Speed High Speed Bhp Watts 900884 941762 859 458 944 579 705886 517 969 644 777790 353 828 413866 479 790 353 896 470 990 599828 413 930 535 1021 669 866 479 964 607 1053 746905 553 1000 687 1085 831 944 635 1036 775 1119 924771 867986 966IV Internal Wiring VI. Refrigerant Service PortsPRE-START-UP START-UP Unit PreparationIX. Cooling Main BurnersXI. Heating XII. Safety Relief XIII. Ventilation Continuous FANXIV. ECONOMI$ER+ Controller DS1 DS2 DS3 DS4 Input Name Type USE INPUT/OUTPUT Conversion Connection PINThermostat Inputs Economizer MotorStart-Up Mode Sequence Configuration Variables Read and Setup ModesInput/Output Channels Setup Mode Manual Mode Error ModeXV. ECONOMI$ER+ Configuration Compressor Configuration and Control Ventilation Air and Free CoolingDemand Ventilation Configuration Power Exhaust ConfigurationXVI. Operating Sequence Cooling, Units without EconoMi$er+Heating, Units without EconoMi$er+ Cooling, Units with EconoMi$er+Service Cleaning III. Blower Belt Adjustment ECONOMI$ER+ AdjustmentII. Lubrication IV. Manual OUTDOOR-AIR DamperLimit Switch XIII. HIGH-PRESSURE SwitchXIV. Loss of Charge Switch XVI. Replacement PartsSuction Line Temperature DEG. C Suction Line Temperature DEG. FSuction Line Pressure Kilopascals Suction Line Pressure PsigTON Unit 60 Hz Charging Chart Burner Section Details Troubleshooting ECONOMI$ER+ Troubleshooting Error Code 8 E2 Test Failure Unit Always in Unoccupied ModeII. Unit Troubleshooting RAM Test FailureLED Error Code Service Analysis Heating Service AnalysisCooling Service Analysis FPT GNDGVR HPSStartup Mode Appendix a ECONOMI$ER+ LabelAppendix a ECONOMI$ER+ Label Appendix B JOB Specific ECONOMI$ER+ Configuration Settings Index Service Training Call for Free CatalogPage START-UP Checklist TemperaturesPreliminary Information III. START-UP Electrical
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580F specifications

The Bryant 580F is a highly regarded gas furnace known for its exceptional heating performance and advanced technology. Designed for residential use, this model stands out for its reliability, efficiency, and user-friendly features that cater to modern heating demands.

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In conclusion, the Bryant 580F gas furnace is a remarkable choice for those seeking a blend of efficiency, comfort, and advanced technology. Its high AFUE rating, multi-speed blower, smart control compatibility, and safety features make it a reliable option for homeowners looking to invest in a dependable heating solution. As the demand for energy-efficient heating continues to grow, the Bryant 580F stands out as a model that meets and exceeds expectations in the modern heating landscape.
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