Product Overview
VT8600 Rooftop, Heat Pump and Indoor Air Quality ControllerApplication Guide
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Viconics Technologies Inc. | 9245 Langelier Blvd. | St.-Leonard | Quebec | Canada | H1P 3K9 | Tel: (514) 321-5660 | Fa x: ( 514) 321-4150
028-6085-01 www.viconics.com | sales@viconics.com April 201
© 2015 Viconcis Technologies. All rights reserved.
Economizer Control Mode and CO2 Level Control
If the fresh air damper is to be used for both free cooling and CO2 level control (economizer mode and CO2 level control, but without fresh
air measurement station), only the Min Pos, Max Pos, Min CO2 and Max CO2 parameters as well as the free cooling sequence will be
active.
• The FA Range parameter should be set to 0 CFM.
• Set AI1 parameter to CO2 (0 VDC = 0ppm ; 10VDC = 2000ppm)
• Min Pos, Max Pos, Min CO2 and Max CO2 parameters should be set according to the required setting.
The highest value between free cooling demand output and interpolation output for the fresh air setpoint will be the output to the fresh air
damper.
Outside air sensor
BACnet MS/TP
Wired communication protocol
Control Board
Supply air sensor
CO2 air sensor
Outside air
ZigBee
®
Pro
Optional wireless communication
Cooling coil Fan Heating coil
Return air
Supply air
Max Pos
Current Fresh Air Setpoint
Min Pos
Max CO
2
Min CO
2
Current CO2 Level