iWorx® VAV Series
2
502-011, Effective: March 16, 2011
© 2011 Taco Electronic Solutions, Inc.
VAV SERIES
The VAV Series terminal units are stand alone microprocessor based controllers for either pressure independent (VAVI)
or pressure dependent (VAVD) terminal box applications.
Overview
A digital input is provided for an indoor air quality alarm. Analog inputs are provided for discharge air temperature and
primary air temperature sensing. A two-wire serial interface is provided for the thermostat. The controller incorporates
digital outputs in the form of triacs for fan start/stop and two heating stages or heating valve open/close.
The controller is based on L
ON
W
ORKS
®
networking technology. It can be networked to a higher-level control system for
monitoring and control applications.
Features
• On-board air-flow sensor (VAVI)
• Integral damper actuator
• Optional indoor air quality (IAQ) alarm input (contact closure)
• Optional discharge air temperature (DAT) monitoring
• Two stages of electric reheat or floating point or modulating 0-10V setpoint hot water reheat valves
• Option to use auxiliary local heat sources for first stage of heating
• Parallel or series fan
• Pressure dependent or pressure independent flow control
• Individual temperature setpoints for occupied/unoccupied heating
• Networked operation using L
ON
W
ORKS
Technology
• Thermostat with space temperature, setpoint adjust, occupancy override
• Integrates with Multiplex Package Unit controller (MPU2)
• Integrates with Variable Air Volume Package Unit controller (VPU2)
• “Stand Alone Mode” for independent operation
• Indoor air quality compensation
• Selection between thermostat types: TS30x and 10K Precon type III thermistor
• Optional normally open dry contact occupancy sensor input
• Optional Primary Air Temperature sensor for use in "Stand Alone Mode"
• Automatic configuration with the Local Control Interface (LCI)
• Alarm/Event reporting
REPRESENTATIONS AND WARRANTIES
This Document is subject to change from time to time at the sole discretion of Taco Electronic Solutions, Inc. All
updates to the Document are available at www.taco-hvac.com. When installing this product, it is the reader’s responsi-
bility to ensure that the latest version of the Document is being used.
iWorx® products shall only be used for the applications identified in the product specifications and for no other pur-
poses. For example, iWorx® products are not intended for use to support fire suppression systems, life support sys-
tems, critical care applications, commercial aviation, nuclear facilities or any other applications where product failure
could lead to injury to person, loss of life, or catastrophic property damage and should not be used for such purposes.
