Model 8840 Touch Screen
Wi-Fi Automation Thermostat
with Integrated Indoor
Air Quality Solutions
Thermostat installation location recommendations ...2
Thermostat mounting...........................2
Equipment control module installation location
recommendations..............................2
Equipment control module mounting ..............3
Thermostat wiring .............................3
Remote temperature sensor (optional) .............4
Support module wiring (optional) .................4
Equipment control module wiring .................5
Outdoor temperature sensor (included).............6
Optional wireless outdoor temperature
and humidity sensor ...........................6
Return air temperature sensor (optional) ...........7
Leaving air temperature sensor (optional) ..........7
TABLE OF CONTENTS
INSTALLATION
HVAC WIRING DIAGRAMS
POWER & RESET OPTIONS
SETUP & TESTING
REFERENCES
Power and reset options .......................11
Installer setup wizard .........................11
HVAC installer system settings tables .........11-13
General system settings table .................11
Thermostat system settings table ...........12-13
Indoor Air Quality system settings tables.......14-17
Humidifier system settings table .............14-15
Dehumidifier system settings table .............15
Air cleaning system settings table..............16
Fresh air system settings table .............16-17
Installer system test ..........................17
WiFi setup ..................................18
Quick reference to controls & display..........19-20
Thermostat features ..........................21
Troubleshooting ..............................22
Specifications................................23
Conventional heat/cool single transformer..........8
Conventional heat/cool two transformer ...........8
Heat pump single transformer....................9
Heat pump two transformer .....................9
INDOOR AIR QUALITY WIRING DIAGRAMS
Indoor Air Quality wiring with separate transformers ..10
Indoor Air Quality wiring with a single transformer....10
Safety &
Installation
Instructions
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