Programming Guide

10 VAV-SVP01A-EN
General Information
within system limits for outside air percent concentrations in the supply air stream. Until Tracer
Summit v15, this feature was provided by way of field custom programming.
CO
2
Based Demand Control Ventilation
As a part of the standard application, the VAV system has the ability to calculate the ventilation
setpoint for the air-handling unit based on the CO
2
in one or more spaces. Until Tracer Summit v15,
this feature was provided by way of field custom programming. Plus, functionality was added to
the VV550 controller to support this feature (as standard). Providing the equivalent functionality
with the current VAV controller would require lots of custom programming.
Ventilation Flexibility
Ventilation can be managed in the following ways:
• Fixed occupancy ventilation setpoint
• Scheduled (or otherwise calculated) ventilation setpoint
• Occupancy sensor to switch between normal and reduced ventilation
•CO
2
sensor for demand-controlled ventilation
Note: CO
2
sensor input not available on VV550.
Temperature Statistics
As a part of the standard application, VAS calculates the minimum space temperature (and source),
maximum space temperature (and source), and the average space temperature. Until Tracer
Summit v15, this feature was provided by way of field custom programming.
VAV VV550 Controller Compatibility
The VAV VV550 Controller is designed with LonWorks technology and will be LonMark certified.
VV550 controller allows VAV units to communicate on a Trane Comm5 or LonTalk link. This
controller works in standalone mode, peer-to-peer with one or more other units, or when
connected to a Trane Tracer Summit or a 3rd party building automation system that supports
LonTalk. The Space Comfort Controller (SCC) is the profile assigned to the VV550 controller.
VAV VV550 Controller Outputs
VAV VV550 Controller Triac outputs for controlling a fan or reheat are rated at 12 VA each.
Wiring Diagram
Figure 2, p. 17 shows a typical wiring diagram for the redesigned VAV VV550 hardware. The new
service part number is BRD2960.