The Automated Logic ZN253 is a fully programmable, native BACnet Advanced Application Controller (AAC) designed to control individual zones within a building. It is well suited for unit ventilators, packaged HVAC equipment, fan coil units, lighting, and exhaust fan applications, particularly where multiple analog outputs are needed to modulate valves or dampers.
The ZN253 communicates over an EIA-485 network using BACnet MS/TP and integrates with the WebCTRL building automation system. EIKON graphical programming software allows custom control sequences, while a library of standard control programs supports common zoning applications.
The controller supports up to 10 points, consisting of five universal inputs, two digital outputs, and three analog outputs. It also supports Automated Logic communicating sensors and OptiPoint touchscreen interfaces for setpoint adjustment, occupancy overrides, equipment management, and troubleshooting.
Key Features & Benefits
Features:
- Designed for single-zone control in HVAC and building automation applications
- Suitable for unit ventilators, packaged HVAC, fan coil units, lighting, and exhaust fans
- Supports native BACnet MS/TP communications over an EIA-485 network
- Supports custom control sequences through EIKON graphical programming software
- Includes standard control programs for common zoning applications
- Provides 5 universal inputs configurable for thermistor or dry contact signals
- Includes 3 analog outputs rated 0–10 Vdc
- Includes 2 digital relay outputs rated up to 1 A at 24 Vac/Vdc
- Supports up to 5 compatible wireless and/or wired ZS sensors
- Supports one Equipment Touch or OptiPoint display
- Supports LogiStat and LogiStat Plus zone sensors
- Provides live visual control logic displays for troubleshooting
- Supports remote firmware upgrades
- Includes built-in surge and transient protection
Benefits:
- Supports flexible control of individual building zones
- Allows custom control sequences for specific equipment requirements
- Provides multiple analog outputs for modulating valves and dampers
- Enables setpoint adjustment and occupancy overrides through compatible sensors
- Supports equipment monitoring and troubleshooting through visual control logic
- Simplifies commissioning through WebCTRL system interfaces
- Supports demand limiting and optimal start strategies
- Allows independent operation without relying on other system devices