VVT Bypass Controller

  • California Prop 65


Product Integrated Controller

The VVT Bypass II controller is used to regulate the supply duct static pressure for a variety of pressure-dependent VVT applications and allows constant volume HVAC equipment to provide zone level temperature control. This advanced controller features a separable, brushless actuator and an integral pressure sensor for reliability and longevity. It also features native BACnet communications and plug-and-play connectivity to the Carrier i-Vu Building Automation System.



Application Features

  • Sophisticated factory-engineered and tested control programs provide reliability and energy efficiency
  • Temperature protection minimizes the occurrence of air source heating and/or cooling lockouts based on unacceptable discharge temperatures
  • VFD support via 0-10VDC analog output to provide drive speed modulation
  • Can drive multiple damper actuators
  • Provides automatic pressure sensor calibration Hardware Features

System Benefits

  • Integrated Carrier airside linkage algorithm for plug and-play integration with the Carrier VVT System
  • Fully plug-and-play with the Carrier i-Vu Building Automation System

Hardware Features

  • Separable brushless actuator and integral pressure sensor
  • Designed for vertical or horizontal mounting
  • Capable of system or stand-alone operation
  • Native BACnet MS/TP or ARCnet communications


BACnet Support Advanced Application Controller (B-AAC), as defined in BACnet 135-2012 Annex L Protocol rev. 9
Communication Ports BACnet Port: EIA-485 port for BACnet MS/TP communications (9600 bps, 19.2 kbps, 38.4 kbps, & 76.8) or ARCNET 156 kbps;
Local Access Port: For system start-up and troubleshooting (115.2 kbps)
Rnet Port: Not used.
ARCnet Port: For connecting the actuator cable.
Separable Actuator Brushless DC motor, torque 45 inch-pounds (4Nm), runtime 205 seconds for 90 degree travel during control.
Integral Pressure Sensor Precision low flow AWM series O-2 in H2O, sensitive down to +/-0.001 in. H2O. Barbed tapered airflow connections accept 3/16 in. (4.75 mm) ID tubing. Allows for readings across the 0-2 in H2O range, accurate to +/-5% of full flow at 2 in. H2O.
Inputs 1 analog input: DAT (10k thermistor). AI has 10 bit A/D resolution.
Outputs 1 analog output: VFD/Actuator. AO is 0 to 10VDC (5mA maximum) with 8 bit D/A resolution using filtered PWM.
Protection Incoming power and network connections are protected by non-replaceable internal solid state polyswitches that reset themselves when the condition that causes a fault returns to normal. The power, network, input and output connections are also protected against voltage transient and surge events.
Battery 10-year lithium CR2032 battery provides a minimum of 10,000 hours of trend data retention during power outages.
Status Indicators LED status indicators for BACnet MS/TP communication, run status, error, power and all digital outputs
Controller Addressing Rotary DIP switches set BACnet MS/TP or ARCnet address of controller.
Listed by UL-916 (PAZX), cUL-916 (PAZX7), FCC Part 15-Subpart B-Class A, CE EN50082-1997, UL94-5VA plenum rated enclosure
Environmental Operating Range Operating: 32° to 130°F (0° to 54°C) 10 to 90% RH, non-condensing
Storage: -24° to 140°F (-30° to 60°C) 10 to 90% RH, non-condensing
Power Requirements 24VAC +/- 10%, 50-60Hz, 14 VA power consumption, 26VDC (25V min, 30V max), single class 2 source only, 100 VA or less

California residents please see Proposition 65

Safety Standards
California Prop 65 Yes
Hazardous Material No
Weights and Dimensions
Operating Weight (lbs) 3
Exterior Dimensions (D) (inches) 4.000000
Exterior Dimensions (W) (inches) 6.000000
Exterior Dimensions (H) (inches) 3.000000
Shipping Weight (lbs) 3.000000