Carrier 48TF004-007 specifications Adjust Evaporator-Fan Speed Ad, Direct Drive Motor Mounting

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Step 9 — Adjust Evaporator-Fan Speed — Ad-

just evaporator-fan rpm to meet jobsite conditions. Table 5 shows fan rpm at motor pulley settings. Table 6 shows motor performance. See Table 7 for Accessory/FIOP Static Pressure. Refer to Tables 8-29 to determine fan speed settings.

DIRECT-DRIVE MOTORS — The evaporator-fan motor factory speed setting is shown on label diagram affixed to base unit. If other than factory setting is desired, refer to label diagram for motor reconnection. See Fig. 39 for direct drive motor location.

BELT-DRIVE MOTORS — Fan motor pulleys are factory set for speed shown in table 1. See Fig. 40 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.

2.Loosen belt by loosening fan motor mounting nuts. See Fig. 40.

3.Loosen movable pulley flange setscrew (see Fig. 41).

4.Screw movable flange toward fixed flange to increase speed and away from fixed flange to decrease speed. In- creasing fan speed increases load on motor. Do not ex- ceed 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.)

Fig. 39 — Direct Drive Motor Mounting

To align fan and motor pulleys:

1.Loosen fan pulley setscrews.

2.Slide fan pulley along fan shaft.

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 one finger).

3.Tighten motor mounting nuts.

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

MOTOR MOUNTING

PLATE NUTS

Fig. 40 — Belt Drive Motor Mounting

Fig. 41 — Evaporator-Fan Pulley Adjustment

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Contents Installation, Start-Up, Service Instructions Rig and Place Unit Inspect unit for Field Fabricate Ductwork Secure allRoof Curb Dimensions Install Gas Piping Unit is equipped for Install Flue Hood Flue hood is shippedUnit Size 48TF Physical Data 48TF004-007Furnace Section Base Unit Dimensions Or larger Make Electrical ConnectionsSteel Pipe Nominal Diameter FeetAHA Terminal BlockRLA LRA Electrical DataSupply Size Type FLAPosition Setting Make Outdoor-Air Adjustments and Install Outdoor-Air HoodTypical Access Panel Locations Horizontal Discharge Block-Off Plate Wiring Connections for Outdoor-Air Thermostat Completed Hood Assembly EconoMi$er Wiring Wiring Diagram for Power Exhaust System Chan geover Set Points Default Potentiometer Settin gsSettings Potentiometer Default Setting CO2 SP PPMDirect Drive Motor Mounting Adjust Evaporator-Fan Speed AdAccessory/FIOP Static Pressure* in. wg 48TF004-007 Fan Rpm at Motor Pulley SettingsMotor Data 48TF004 3 Tons Alternate Motor Belt Drive 48TF004 3 Tons Standard Motor Direct Drive48TF005 4 Tons Standard Motor Direct Drive 48TF004 3 Tons HIGH-STATIC Motor Belt Drive48TF005 4 Tons Alternate Motor Belt Drive 48TF006 5 Tons Alternate Motor Belt Drive 48TF006 5 Tons Standard Motor Direct Drive48TF006 5 Tons HIGH-STATIC Motor Belt Drive 48TF007 6 Tons Standard Motor Belt Drive 48TF007 6 Tons HIGH-STATIC Motor Belt Drive 229 109149 189938 10281064 100548TF005 4 Tons Alternate Motor Belt Drive 48TF005 4 Tons HIGH-STATIC Motor Belt Drive 1900 894 567 1600 770 420 826 4831700 811 494 865 567 1800 852 5781700 865 567 966 725 1051 883 1133 1061 1205 12211600 826 483 931 641 1020 788 1101 956 1178 12521015 891 1063 998 885 623 942 700928 700 982 779 971 787 1022 8672200 1104 1081 1159 1106 1229 1258 1900 982 779 1084 932 1160 1006 1223 11142000 1022 867 1121 1014 1188 1097 1254 1216 2100 1063 998 1140 1064 1196 1272 1292Nominal Input HeatingAltitude Compensation Btuh NominalPage Service Lubrication Economizer Adjustment Refer to Optional EconoTON Unit Charging Chart TON Unit 60 Hz Charging Chart Cooling Charging Chart, 48TF006Flashes LED Error Code DescriptionLED Indication Error Code Description OFFBurner Tray Details LED OFF LED Error Code Service AnalysisHeating Service Analysis Problem Cause RemedyCooling Service Analysis IFC Durablade Economizer TroubleshootingEconoMi$er Troubleshooting Typical Wiring Diagram and Component Arrangement SW1 SATCAP SENCopyright 2000 Carrier Corporation Page Preliminary Information Remove and Use in Job File

48TF004-007 specifications

The Carrier 48TF004-007 is part of the brand's renowned rooftop unit series, designed to deliver efficient, reliable performance for commercial applications. Ideal for spaces such as offices, retail stores, and small manufacturing facilities, these units encapsulate advanced technology to enhance indoor air quality and optimize climate control.

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