US4020 photo
Multi-Stage RTU Thermostat

US4020

· Dual Protocol Support: TCSbus or BACnet (plus standalone mode)
· 6 output stages: 2 heating, 2 cooling, 2 configurable
· Mixed air on T1
· Internal BACnet explorer
· 

pdf  Instructions      pdf  Submittal Data

Features

· Powerful touchscreen user interface
· Internal BACnet explorer
· Quick start wizard
· System test screen for rapid commissioning
· Highly detailed status reporting and diagnostics
· Service status indication with custom messaging
· Calibration of temperature inputs
· 4.3 inch color touchscreen
· Selectable BACnet or TCSbus communication
· BACnet BTL Listed (B-ASC)
· Backward compatible with existing TCSbus networks
· All inputs/outputs fully commandable via network
· Full-featured BACnet scheduling (SCHED-I-B)
· 5 Heat/Cool setpoint groups
· Includes all legacy TCS SZ Series thermostat features
· Includes many additional features and enhancements
· 6 output stages: 2 heating, 2 cooling, 2 configurable
· General purpose monitoring using analog inputs
· 4 temperature inputs (1 built-in, 3 remote)
· Outdoor, discharge, remote room/mixed air
· Configurable weighted averaging of built-in and remote room
· Conventional or heat pump control
· Discharge setpoint reset on modulating heat/cool Control
· Configurable Smart Recovery ™
· Configurable P+I relay stage anticipator
· Setpoint setback based on DI
· Network upgradeable firmware
· Built-in equipment protection delays and sequencing
· Programmable fan control
· Auto/on/cool/recirculation modes for occupied and unoccupied
· Adjustable recirculation
· Fan proving with automatic retries
· User management controls
· Occupancy override enable/disable
· Setpoint adjust range limit
· Optional access code locks out on-screen programming
· Outdoor air heating and cooling lockouts
· Discharge air protection limits
· Fahrenheit or Celsius temperature display
· External time clock input/output
· Adjustable delay on power up and occupancy
· Stand-alone or network operation
· Backup & Restore of all settings (DM-BR-B)