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Gray direct-drive blower motor with open enclosure and ring-stud mount

Dayton

Dayton 3LU89 1 hp Direct Drive Blower Motor HVAC Control

SKU CH-QHQ4-PT7BG

Single-phase direct-drive blower motor delivers 1 hp at 115 V AC with three-speed operation and auto thermal protection for continuous-duty HVAC systems

  • 1 hp direct-drive power for strong airflow
  • Three-speed operation matches variable HVAC demand
  • 115 V AC single-phase supply fits standard wiring
  • Auto thermal protection prevents overheating damage
  • All-angle ring/stud mounting simplifies installation

Dayton 3LU89 1 HP Blower Motor

The Dayton 3LU89 is a 1 HP direct-drive blower motor built for HVAC systems that need continuous airflow. Its permanent split capacitor design delivers three-speed operation from a single-phase 115 V AC supply. The open air-over enclosure suits indoor air-handling units where ambient temperatures stay within 40 °C. Installers and maintenance teams can mount it at any angle thanks to the ring/stud mounting system.

Check voltage phase and frame before ordering

Confirm the supply is 115 V AC single-phase at 60 Hz and that the starter or contactor can handle 10.0 A full-load current. Verify the 48YZ frame matches the existing mounting footprint and that the shaft rotation direction suits the blower wheel. The motor includes automatic thermal protection, so ensure the control circuit can accommodate a reset after an overload event. Continuous duty rating means no intermittent-cycle timer is required.

Gray 52100 chrome steel shaft

The motor shaft uses 52100 chrome steel for wear resistance in continuous operation. Ring/stud mounting secures the 48YZ frame without a separate base, reducing vibration transfer to ductwork. All-angle mounting allows horizontal, vertical or inverted installation to fit tight mechanical rooms. The open air-over enclosure relies on the airstream for cooling, so the blower wheel must run whenever the motor is energised.

Highlights

  • 1 hp direct-drive power for strong airflow
  • Three-speed operation matches variable HVAC demand
  • 115 V AC single-phase supply fits standard wiring
  • Auto thermal protection prevents overheating damage
  • All-angle ring/stud mounting simplifies installation

Specifications

BrandDAYTON

Questions about this item

Does the Dayton 3LU89 motor ship with a capacitor or mounting ring, or must those be purchased separately?

The motor is a permanent split capacitor design with ring/stud mounting; the supplied facts list only the motor itself, so any capacitor or mounting hardware would be a separate purchase.

Should I choose the 1 hp, 115 V, 10.0 A version or a different voltage or frame size for my replacement?

This specific unit is the 1 hp, 115 V AC, 10.0 A full-load model in a 48YZ frame with three-speed operation; match those exact ratings to the nameplate on the motor you are replacing.

What does the 1,625 nameplate RPM mean for airflow once the motor is installed in my blower?

At 1,625 RPM the motor delivers its rated 1 hp continuously; actual airflow will depend on the blower wheel diameter and static pressure of your HVAC system.

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