Schneider Electric VZ7656R1031B BACnet RTU Controller 2H/2C Programmable with IAQ and Economizer

The Schneider Electric VZ7656R1031B is a programmable rooftop unit (RTU) controller designed for commercial HVAC zoning systems. This BACnet MS/TP controller provides sophisticated control for 2-stage heating and 2-stage cooling equipment with integrated Indoor Air Quality (IAQ) monitoring and economizer functionality.

Key Features:

• BACnet MS/TP communication protocol for seamless building automation integration
• 2-stage heating and 2-stage cooling control capability
• Built-in programmable scheduling for automatic occupied/unoccupied operation
• Economizer control with free cooling capability to reduce energy costs
• Indoor Air Quality (IAQ) control with CO2 monitoring support
• Backlit LCD display with dedicated function menu buttons for easy operation
• PI proportional control algorithm for precise temperature control
• Digital inputs for filter status monitoring and service indicators
• SPST auxiliary switch for lighting control or economizer disable during unoccupied periods
• Part of the Viconics VZ7600 Series controller family

This controller is specifically designed for single-stage or multi-stage control of rooftop and self-contained HVAC units used in zoning systems. The integrated economizer function enables free cooling when outdoor conditions are favorable, while the IAQ control ensures optimal indoor air quality through CO2 level monitoring. Installation and commissioning are simplified through the easy-to-read LCD interface, eliminating the need for external programming tools.