Description 

The RDY2000RZ/SC Room Thermostat is designed to control light commercial HVAC systems within the Site Controls Energy Management System architecture. The thermostat can control up to three stages of heating and three stages of cooling in a conventional system and heat pump systems with up to two compressors and two stages of auxiliary heat. 

Hardware Features 

• ZigBee radio designed for interface with the Site Controls Energy Management System (not compatible with wired Modbus systems). 

• Compatible with HVAC systems utilizing 24 Vac control circuitry: - Conventional systems with up to three stages of heating and three stages of cooling - Heat pump systems with one or two compressors and up to two stages of auxiliary heat 

• On-board temperature sensor • Standard HVAC relay outputs: - Compressor 1 (Y1) - Compressor 2 (Y2) - Fan (G) - Heating 1 (W1) - Heating 2 (W2) - Reversing Valve (O/B) Control Features 

• Real time clock retains time and date for up to 48 hours upon loss of input power. 

• System configuration data is stored indefinitely upon loss of input power. 

• Interlocks and timers specifically designed for equipment protection 

• Password protected installer set-up menu deters unauthorized changes. 

• Selectable lockout levels minimize tampering with setpoints and schedule. 

General Features 

• Separable back plate with wiring terminals and mounting holes configured to match most conduit box configurations (screws and anchors included for drywall mounting). 

• Designed for horizontal layout