Viconics VT7606E Installation Manual - Manual (Page 4)

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| PIR Ready VT7600 Series-Installation Guide
028-0363-02
T
heory of
o
peraTion
The VT76X6E series uses a Viconics proprietary adaptive logic algorithm to control the
space temperature. This algorithm controls the heating or air conditioning system to
minimize overshoot while still providing comfort. It provides exceptional accuracy due to
its unique PI time proportioning control algorithm, which virtually eliminates temperature
offset associated with traditional, differential-based On-Off thermostats.
Fig.2 - On-Off mechanical control vs PI electronic control.
Features overview
• 7 day schedule models, 2 or 4 events.
• C02 control logic based on fresh air volume or fresh air damper position.
• Fresh air damper output for building CO2 level control.
• Gas, oil or electric system compatibility.
• Remote outdoor sensing capability for added flexibility.
- System mode heating and cooling lockout.
• Remote discharge air sensor input for monitoring and control purpose.
- System efficiency feedback.
- Discharge high limit heating lockout.
- Discharge low limit cooling lockout.
• Remote return air sensor input that replaces internal on board sensor.
- System efficiency feedback.
• Password protected configuration menu and lockable keypads for security.
• Automatic smart fan operation saves energy during unoccupied periods.
• Non volatile EEPROM memory prevents loss of parameters during power short-
age.
• Configurable SPST output relay on scheduling models for lighting, exhaust fan or
fresh air control.
• 6 hour typical reserve time for clock in case of power loss.
Easy configuration and self-binding operation
• Easy configuration without using any special software or additional tools.
• Can be used as stand-alone or with BACnet™ MS-TP supervision controller for
monitoring purposed.
• Truly scalable in terms of supported number of zones and RTU units.