VVT Bypass Controller
Carrier Proprietary and Confidential
CARRIER CORPORATION ©2017
Installation and Start-up Guide
All rights reserved
1
What is a VVT Bypass Controller?
The VVT Bypass Controller (#OPN-VVTBP), a component of the i-Vu® Control System, regulates the supply duct
static pressure by controlling one of the following:
•
The system's bypass damper
The controller's built-in damper actuator provides 35 in/lbs (4 Nm) of torque. If the built-in actuator's torque
is insufficient, the VVT Bypass Controller can be used to drive an external high-torque actuator. Or, the
controller can drive multiple external damper actuators.
•
The air source supply fan's variable frequency drive (VFD)
NOTE
The VVT Bypass Controller controller is available in both English or Metric units. The metric version has (-M)
appended to the part number. Everything in this document applies to both versions.
The i-Vu Control System uses linkage to exchange data between the zone terminals and their air source to form a
coordinated HVAC system. The system's air source controller, zone controllers, and bypass controller are linked so
that their data exchange can be managed by one zone controller configured as the VVT Master.
The following illustration shows the VVT Bypass Controller in a typical i-Vu® Control System.
Introduction
