User ManualTable of ContentsPreface5Conventions used in this document5Safety terms and symbols5Product overview6Wall display unit (WDU)6Figure 1. Wall display unit default screen6Thermostat control screen8Figure 2. Thermostat control screen8Temperature display8Setpoint display8Clock display8Up and down buttons9Menu button9Mode button9Fan button9Run/Hold button10LED display10Communication error display10Main menu screen11Figure 3. Main menu screen11Messages screen12Figure 4. Messages screen12Schedule setup screen13Figure 5. Schedule setup screen13Heat and cool schedule screen14Figure 6. Heat and cool schedule screen14Copy schedule screen15Figure 7. Copy schedule screen15User settings screen16Figure 8. User settings screen16Set clock screen17Figure 9. Set clock screen17Sensor calibration screen18Figure 10. Sensor calibration screen18Backlight display screen19Figure 11. Backlight display screen19Thermostat information screen20Figure 12. Thermostat information screen20Installer settings screen21Figure 13. Installer settings screen21Installation overview24Figure 14. Wiring overview24Freeze protection25Figure 15. Freeze protection25Wall display unit installation26Mounting26Figure 16. Opening and closing the WDU case26Wiring26Control unit installation27Control unit to WDU wiring27Figure 17. Control unit to WDU wiring27Control unit to HVAC wiring27Retrofit wiring27HVAC system wiring28Standard HVAC system wiring28Figure 18. Standard HVAC system wiring28Heat pump HVAC system wiring30Figure 19. Heat pump HVAC system wiring30Control unit connection32Serial communication33System checklist35Thermostat bench test35Serial communication test36HVAC system testing37Figure 20. HVAC system wiring example37Table 1. Standard system quick test38Table 2. Heat pump system quick test38Control unit wiring39Figure 21. Control unit wiring39Serial network command and variable list41Network commands41Table 3. Network commands41Network variables42Table 4. Network variables42Contacting technical support43Table 5. Sales and support contact information43Online publication library43Size: 376 KBPages: 44Language: EnglishOpen manual