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Titus HVAC 31671881 3/4 HP VAV Motor TQS 277V

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Special Price $732.25 Regular Price $812.80
In stock
SKU
31671881

The Titus HVAC 31671881 is a variable air volume (VAV) motor used in commercial HVAC systems. It regulates the airflow within a building by adjusting the position of dampers in air ducts. When signaled by a building automation system, the motor increases or decreases its speed, directly impacting the amount of air delivered to a specific zone. This precise airflow control offers several benefits. It optimizes comfort for building occupants by ensuring they receive the right amount of conditioned air. It also improves energy efficiency by preventing unnecessary heating or cooling in unoccupied areas. Additionally, the Titus HVAC 31671881 is designed for durability and reliability in demanding commercial environments.
Here are the key specifications of the motor:
Voltage/Electrical: 277V
RPM (Revolutions Per Minute): 1150 RPM
Horsepower (HP): 3/4Hp
Frequency: 60Hz
Weight: 17.09lbs

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Specifications

  • Voltage/Electrical: 277V
  • RPM (Revolutions Per Minute): 1150 RPM
  • Horsepower(HP): 3/4Hp
  • Frequency: 60Hz
  • Weight: 17.09lbs

Variable air volume (VAV) systems regulate the amount of conditioned air delivered to different zones by adjusting airflow through dampers. The Titus HVAC 31671881 is a VAV motor designed to provide the mechanical movement required by its associated damper mechanism. This movement supports airflow adjustment within the air distribution system.

Electrical Supply and Motor Operation:
The motor is specified for a 277V electrical supply and a 3/4 HP rating. It converts electrical energy into mechanical rotation, supplying the drive needed by the connected mechanism. The electrical supply and power rating must match the requirements of the intended application.

Shaft Movement and Damper Control:
The motor converts its mechanical output into movement of the connected damper mechanism. This movement allows the damper to adjust the airflow passage according to the VAV system's control requirements.

Replacement Guidelines:
Replacement may be appropriate when a confirmed motor fault prevents the damper mechanism from moving as required. Before ordering, compare the original part number and verified motor characteristics with the requirements of the intended application.

Common Failure Symptoms:

  • Damper movement becomes inconsistent
  • Motor fails to respond to control signals
  • Motor fails to operate
  • Unusual operating noise or excessive vibration
  • Motor overheats during operation

Equipment Compatibility:
The Titus HVAC 31671881 is intended for VAV applications requiring the corresponding motor configuration. Verify the part number, voltage, frequency, horsepower, rotational speed, mounting arrangement, and connections against the VAV unit's parts information before ordering.

Technical Specifications:
Product Identification:
Brand: Titus HVAC
Part Number: 31671881
Product Type: VAV Motor
Model Designation: TQS

Electrical:
Voltage: 277V

Mechanical:
Horsepower: 3/4 HP

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Product Questions (7)
Customer Questions
What maintenance is required for the Titus HVAC 31671881 Motor?

Inspect the motor regularly for dust buildup, loose wiring, and signs of overheating. Ensure proper lubrication if applicable and verify secure electrical connections. Routine maintenance helps maintain efficient airflow control and prevents unexpected failures or electrical hazards.

What are common issues with the Titus HVAC 31671881 Motor?

  • Motor overheating during operation.
  • Failure to start or intermittent operation.
  • Unusual noise or vibration from internal components.
  • Electrical connection faults or voltage inconsistencies.

What is the function of the Titus HVAC 31671881 VAV Motor?

It provides the mechanical drive required to move the associated damper mechanism, supporting airflow adjustment within a VAV system.

How does the motor support variable air volume control?

The motor moves the connected damper mechanism, changing the available airflow passage according to the system's control requirements.

What could cause the damper to stop responding correctly?

Possible causes include a motor fault, a mechanical obstruction, a damaged connection, or a control-system issue. Diagnosis is needed before determining whether the motor requires replacement.

Can another 3/4 HP motor replace the 31671881?

Not automatically. The motor's electrical requirements, speed, mounting arrangement, connections, control characteristics, and intended application must also match.

How can I confirm whether the 31671881 fits my VAV unit?

Check the VAV unit's model-specific parts information and verify that the 31671881 or an approved equivalent is specified for the application.

Installation Steps

Step 1: Turn off electrical power at the HVAC system.

Step 2: Remove the existing motor and disconnect wiring carefully.

Step 3: Mount the new motor securely in the unit bracket.

Step 4: Reconnect wiring according to the wiring diagram provided.

Step 5: Ensure proper voltage and secure all connections tightly.

Step 6: Test motor rotation and operation before closing the unit.

Step 7: Restore power and verify smooth, safe operation.