Lennox International Inc XP1906, XP2101, XC2105, XC1702 Supports, Outdoor Temperature Sensor option

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Supports

icomfort Wi-Fit Thermostat − Technical Description and Features

The 24VAC icomfort Wi-Fit thermostat (figure 1) is an electronic communi- cating, color display touchscreen, 7−day programmable thermostat. It stores system parameters and settings in nonvolatile memory (i.e., it retains data when electrical power fails or is turned off). It is designed for 4−wire connec- tion to other communication devices as listed in figure 1.

The icomfort Wi-Fit thermostat can connect to online services via the inter- net through the homeowner’s Wi−Fi access point. After online registration is completed, the system may then be accessed by the homeowner from any- where using a remote internet connection via computer or personal commu- nicating device.

R i+ i− C Thermostatconnections

BEST PRACTICES! Keep all communication wiring as far away from house electrical wiring and large electrical appliances as possible (15’ [5m] recom- mended).

The thermostat also:

Ssupports three languages (English, French, Spanish),

Ssupports air conditioning units or heat pump units with up to four stages of heat / two stages of compressor operation (2 stages of heat pump heating, 2 stages of auxiliary back−up heating, 2 stages of emergency heating),

Ssupports Indoor Air Quality with time-based notification of consum- ables including media filters, UVC bulbs, humidifier pads, and Pure- Airt system catalyst service / replacement,

Ssupports variable−capacity / multi−stage heat/cool, universal compati- bility (gas/electric/heat pump/ac), and is dual fuel capable (icomfort− enabled HP only) with two balance points.

Important

RSBus Minimum wire size is 18 gauge

RED

YELLOW

WHITE

GREEN

Maximum total length of all connections on the RSBus is limited to 1500 ft. (450 m). Max. length between compo- nents is 300 ft. (90 m).

Connections to non−communicating outdoor units and accessories are de- scribed in the Quick−Start Installation guide. (Wiring diagrams are also shown beginning on Page 59 of this manual.)

Supports

S

Humidification Measurement and Control,

S

Dew Point Adjustment Control

S

Dehumidification Measurement and Control

S

Humiditrol® Enhanced Dehumidification Accessory (EDA)

icomfortt−enabled Furnace Control icomfortt−enabled Air Handler Control icomfortt−enabled Outdoor Unit Control

External Sensors − outdoor temperature, discharge air Humidify Control

Dehumidify Control

Note: icomfort Wi-Fit thermo- stat does not require shielded cable wiring.

S

Multi-Stage HVAC Systems

S

Equipment Maintenance Reminders

S

Autochangeover Mode −− Permits control of heating, cooling, humidifi-

 

cation, and dehumidification without user involvement.

Outdoor Temperature Sensor (option)

Figure 1. icomfort by Lennoxt system

Communicating outdoor units contain a built−in outdoor temperature sensor.

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icomfort Wi-Fit 7−Day Programmable Communicating Thermostat

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Contents CONTROLS INSTALLER’S SYSTEM SETUP GUIDEicomfortt−Enabled Units 2P0912**P506920-01Setting up typical icomfortt systems Table of ContentsPage Supports Outdoor Temperature Sensor optionFigure 1. icomfort by Lennoxt system Installation and Setup Figure 4. Entering Change settingsFigure 3. Settings change tools Dealer NumberTable 1. System setting defaults and range Circulate fan ON time settingFigure 6. Set current time and date Set time and date09 39 am Figure 5. View/edit time and dateFigure 7. Using the HUMIDITY CONTROL TIPS Add or Remove Non−communicating equipmentSystem Add Non−Communicating Outdoor unitFigure 8. Add non−communicating device red settingsHumidifier 5a 5bFigure 9. Add or remove non−communicating device SystemDehumidifier Figure 10. Add or remove non−communicating deviceSystem DehumidifierFigure 11. Adjust communicating device screens Adjust a setting screen communicating devicesFigure 12. Accessing device to modify Figure 13. Modify device settingsG71MPP or SLP98 Furnace Note Figure 14. Adjust a non−communicating device setting Figure 15. Adjust a non−communicating device setting Figure 16. Adjust dehumidification when not using Humiditrol or an auxiliary dehumidifier Humidification and Dehumidification Modes HUMIDIFICATION modesDEHUMIDIFICATION modes Figure 19. Typical tests results screens Use the Tests / Diagnostics featuresFigure 17. Start testing screen Figure 18. Select tests to run screenFigure 21. Equipment parameters screen Equipment, Alerts, DiagnosticsSet up Equipment parameters Figure 20. Testing finished screenFigure 22. Edit equipment details Run DiagnosticsView and clear Installer Alerts Figure 23. Select device and run diagnosticsFigure 26. Cleared alerts screen Figure 25. Cleared alert confirmationView cleared alerts Figure 24. Selecting and viewing alertsHERE Figure 27. Wi−Fi setupSecure Connection Recommended STARTRegistering the icomfort Wi-Fitthermostat Registration for online accessFigure 28. Change Networks Figure 30. icomfort Wi-FitRegistration screen Wi-FitTher Welcome homeHow Do I Upload a Skin? Figure 31. PC Welcome Screenyes no Access installer program from Home screenFigure 34. Re−configuration process Reconfigure a system2nd Stage Differential where applicable2 Rules for SSR Smooth Setback Recovery SSRHigh Balance Point Heat Pump, Dual Fuel and Balance PointsHeat Pump Balance Points Low Balance PointShut down HP Gas Heat Control Mode Figure 36. Variable Capacity Operation Flow ChartTable 2. Variable Capacity Furnace Operation Staged operationLoad−tracking Variable Capacity FAQs SLP98V only Installer entry Table 3. Adjustable Parameters Table InstallerLock in 2nd stage HP by Outdoor Temp Table 3. Adjustable Parameters Table InstallerAIR HANDLER Table 3. Adjustable Parameters Table InstallerGas Heat Airflow Settings Table 3. Adjustable Parameters Table InstallerFURNACE Cooling Airflow Settings Heat Pump Airflow SettingsTable 3. Adjustable Parameters Table Installer Table 3. Adjustable Parameters Table Installer Other ParametersTable 4. Adjustable Parameters Table User Filter 1 Timer Table 5. Alert Codes and Troubleshooting Alert Table 5. Alert Codes and TroubleshootingAlert Table 5. Alert Codes and TroubleshootingAlert Table 5. Alert Codes and TroubleshootingAlert Table 5. Alert Codes and TroubleshootingAlert Table 5. Alert Codes and TroubleshootingAlert Table 5. Alert Codes and TroubleshootingAlert Table 5. Alert Codes and TroubleshootingAlert Table 5. Alert Codes and TroubleshootingTable 5. Alert Codes and Troubleshooting Homeowner Service Alert Codes8Corrective Action / Comments Table 6. Troubleshooting TipsIssue / Problem Possible CauseHigh Balance Point and Low Bal Table 6. Troubleshooting TipsDetermine the actual Software ver Table 6. Troubleshooting TipsDuring the cooling mode the dis Table 6. Troubleshooting Tipsicomfortt Communicating System Wiring Wiring Diagramsicomfort by Lennoxt AIR HANDLER AHC Wiring Diagramsfor use with any icomfort by Lennoxt system Optional Accessories WiringOptional Accessories Wiring for use with any icomfort by Lennoxt systemLVCS Ventilation Control System attached to the PUSHBUTTON TIPS Setting up typical systemsTIPS Setting up typical systemsT PUMP DUAL FUEL TIPSTIPS TIPS Setting up typical systemsTIPS TIPS Setting up typical systemsT PUMP UNITSTIPS Replacement Kit Catalog No Table 7. Replacement ControlsREVISION HISTORY icomfortt−Enabled Unit
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