Lennox International Inc. Touch Screen Programmable Communicating Thermostat manual

*2P1109* *P506052-01*  2009 Lennox Industries Inc. Dallas, T exas, USA INST ALLER’S SYSTEM SETUP GUIDE icomfort t Thermost at T ouch Screen Programmable Communicating Thermost at CONTROLS 506052−01 1 1/09 Shipping and Packing List1 1 − icomfort  T ouch Screen Communicating, 7−day Programmable Thermostat 6 − Mounting Screws 6 − Wal[...]

506052−01 1 1/09 Page 2 T able of Contents icomfort  Thermostat T erms and Acronyms 3 . . . . . . . . . . . . . . . . . icomfort  T echnical Description 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . icomfort  Thermostat Features 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . Installing icomfort  Thermostat 5 . . . .[...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 3 icomfort t Thermostat T erms and Acronyms Subnet Controller (SC): (part of the communicating thermostat) Local device that controls the system. Subnet: A part of the communication network that contains devices to control one functional HV AC system. RSBus − Residential Serial Bus ?[...]

506052−01 1 1/09 Page 4 icomfort t T echnical Description The 24V AC icomfort  thermostat stores system parameters and set- tings in a nonvolatile memory (i.e., it retains data when electrical power fails or is turned off). The thermostat (see figure 1 ) also:  includes on-board help screens,  supports heat pumps or non−heat pump units[...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 5 icomfort t Thermostat Features Thermost at T ype Electronic communicating, color display touch screen, 7−day program- mable. Support s  Humidification Measurement and Control,  Dew Point Adjustment Control,  Dehumidification Measurement and Control,  Humiditrol ® Enhan[...]

506052−01 1 1/09 Page 6 Installer setup − Page 1 of 8 After power is applied to the thermostat for the first time, the processor checks the system for installed communicating devices, the System discovery" screen (figure 2) is displayed on the thermostat; followed by th e Use this thermostat" screen (figure 3). Press press here [...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 7 Installer setup − Page 2 of 8 System settings (figure 5) appear first. As you use the up/down arrows to scroll through the settings, the right hand side will show the current value, for example, Current V alue: (35% ) shows the current setting of the Circulate Fan ON time . e[...]

506052−01 1 1/09 Page 8 Installer setup − Page 3 of 8 Setting time and date U s e the arrows to select Time and Date; press edit (see figure 7). Press next to proceed to the Set current time and date" screen (figure 8). test s setup HELP system settings to adjust a setting, highlight it, then press edit. Current V alue: (September 15, 2[...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 9 Installer setup − Page 4 of 8 Add/remove /modify non−communicating devices From this screen (figure 9), use the yes button to access a list of non− communicating devices for installing or removing. A list similar to that shown in figure 10 will appear . setup HELP yes next step[...]

506052−01 1 1/09 Page 10 Installer setup − Page 5 of 8 Modify communicating device settings Use this screen (figure 1 2) to access communicating devices’ settings. Use back to return to the previous screen or next step to go on. HP XP19−060−230−06 5809K00015 AIR HANDLER CBX32MV−60 5809K00020 THERMOST A T 49W95 A109K00139 SYSTEM setup [...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 1 1 Installer setup − Page 6 of 8 If you select reset and then confirm , the highlighted device will be reset to its factory setting. Y ou would see a screen similar to figure 14, but ref- erencing only the selected device. confirm cancel Resetting ALL devices to their factory defaul[...]

506052−01 1 1/09 Page 12 Installer setup − Page 7 of 8 Indoor air quality controls An example of installing UV Light is shown in figure 10, Page 9. T o turn on humidification or dehumidification controls , in addition to the setup described on Page 9, work from either the setup tab or the equipment tab to get to the adjustment screen (figure 15[...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 13 Installer setup − Page 8 of 8 setup tests equipment HELP Equipment Name Filter 1 Timer Selection . . (various) . . Dehumidification Control Mode Humidification Control Mode back (to adjust a setting, highlight it, then press edit) Current V alue: (Display Only) SYSTEM edit reset F[...]

506052−01 1 1/09 Page 14 T ests − Page 1 of 1 The test s feature is not available until after setup has been completed once. After you press next step in the final setup screen, the Select tests to run" screen (figure 18) appears. If you re−select the test s tab from any other screen, a message to press S tart button below to begin[...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 15 T ests − Page 1 of 1 After the tests have been started, the screen will describe which test is running (see figure 20). After concluding that the results are the desired results for any test, press next (if using TEST ALL) to proceed to the next test or done (if running a single t[...]

506052−01 1 1/09 Page 16 Equipment − Page 1 of 1 This feature allows the installer to edit details of devices in the system without having to re−run the setup program. The following appears after the equipment tab has been selected press start button below to edit details of devices in the system start Press st art ; the Equipment details [...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 17 Diagnostics − Page 1 of 1 If you need to run diagnostics to analyze the system, press the diagnos - tics tab. The Select device to run diagnostics" screen (figure 24) will open. HP XP19−060−230− 06 5809K00015 AIR HANDLER CBX32MV−60 5809K00020 run diagnostics on: se[...]

506052−01 1 1/09 Page 18 Alerts − Page 1 of 4 As described earlier on Page 6, alerts may pop up on the screen during setup. T o view alerts otherwise, press the alert s tab. Up to 10 alerts are stored for recall by the technician. Th e left side of the main alert screen shows a list of each communicating device discovered in the system and incl[...]

confirm press ’confirm’ to clear the alert, or press ’cancel cancel was action taken? yes no icomfort  T ouch Screen 7−Day Programmable Thermostat Page 19 Alerts − Page 2 of 4 Clearing alert s A critical alert (red icon) identifies a system or device issue that can pre- vent the system from working properly or at all, and if allowed to[...]

506052−01 1 1/09 Page 20 Alerts − Page 3 of 4 Using custom time" Use Setting custom time" screen (figure 30) to set an exact date and time for the reminder to appear . Press in one of the boxes to highlight it and use the up/down arrows to change the value in that box. Repeat for all boxes. When desired reminder is displayed, pr[...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 21 Alerts − Page 4 of 4 V iew cleared alert s A history of cleared alerts allows the installer to review the cleared alerts. This information can help diagnose problems. Use the arrows to (figure 34 ) select either SYSTEM ALER TS or a devicefrom the list (see figure 34) and press vie[...]

506052−01 1 1/09 Page 22 Access installer program from Home screen − Page 1 of 1 T o access the installer program after the unit has been placed in opera- tion and the user home screen is displayed, press the Lennox" logo and hold for 5 seconds (see figure 35). The system will access the installer screens. Figure 35. Enter inst allation[...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 23 Reconfiguring a system − Page 1 of 2 T o begin reconfiguring a system, press the setup tab. Th e S tart system configuration" screen (figure 37) appears; press sta r t to proceed. start press start button below only if you wish to setup a new system, or to re−setup an ex[...]

506052−01 1 1/09 Page 24 Reconfiguring a system − Page 2 of 2 While reconfiguring , the thermostat will have retained settings from the previous configuration. If a device has been replaced and re−configura- tion has detected its replacement device, it will know the original device is missing and prompt the installer (figure 40). If this is t[...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 25 Edit able Parameters T able (User and Installer) Parameter Name: Default Parameter V alue Setting Increment Inst aller settings T ime and Date  (T ime/date elements screen)  Daylight Saving Time Enabled Enabled, Disabled  Circulate Fan − Percentage of Time ON 35% 15 to 45[...]

506052−01 1 1/09 Page 26 Parameter Name: Increment Parameter V alue Setting Default 1st Stage Differential 0.5ºF 0.5 to 3ºF .5ºF 2nd Stage Differential 1.5ºF 0.5 to 8ºF .5ºF 3rd Stage Differential 2.0ºF 0.5 to 8ºF .5ºF 4th Stage Differential 2.5ºF 0.5 to 8ºF .5ºF 5th Stage Differential 3.0ºF 0.5 to 8ºF .5ºF 6th Stage Differential 3[...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 27 Parameter Name: Increment Parameter V alue Setting Default AIR HANDLER Equipment Name Air Handler (T ypewriter input screen)  Electric Heating Airflow nnnn CFM SEE NOTE −. NOTE: CFM Default and V alues Settings are dependent on the tonnage of the unit 5CFM Low Cooling Airflow 5[...]

506052−01 1 1/09 Page 28 Parameter Name V alue Dependency Note Default Min. Max. Incr . FURNACE Heating indoor blower OFF delay DIP SW 60 180 10 None DIP switch setting in Non−comm. Heating indoor blower ON delay 45 15 45 5 None 45 sec fixed in Non−Comm. IFC Cooling indoor blower OFF delay 0 0 30 2 Outdoor Unit present Not used on Non Com. IF[...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 29 Parameter Name Note Dependency V alue Parameter Name Note Dependency Incr . Max. Min. Default Cooling Airflow Setting High Cooling Airflow (CFM @ 100% cool) OU tons (OUNC) * 400CFM Min CFM Max CFM 25 Outdoor Unit present 1/2 HP blower Min CFM Max CFM 25 1 HP blower Low Cooling Airfl[...]

506052−01 1 1/09 Page 30 Parameter Name: Default Parameter V alue Setting Increment User settings T ime and Date  (T ime/date elements screen)  Daylight Saving Time Enabled Enabled, Disabled  Circulate Fan − Percentage of Time ON 35% 15 to 45% 1% Dealer Contact Information – Name Lennox (T ypewriter input screen)  Dealer Contact I[...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 31 Alarm Codes and T roubleshooting Alarm ID Message Name Action required to Clear/Recover 10 Unknown Device Detected − DEVICE2 Reconfigure the system. Press and hold Lennox Logo, press setup tab, press start, and press confirm. If still persists, then check all DEVICE connections to[...]

506052−01 1 1/09 Page 32 Alarm Codes and T roubleshooting Alarm ID Action required to Clear/Recover Message Name 125 Control Hardware Problem Hardware problem on the control board. Cycle power on control. Replace if problem prevents service and is persistent. 126 Control Internal Communication Problem Hardware problem on the control board. Cycle [...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 33 Alarm Codes and T roubleshooting Alarm ID Action required to Clear/Recover Message Name 241 Flame Out of Sequence − Still Present Shut off gas, check for gas valve leak. 250 Primary Limit Switch Open Check firing rate on furnace, blockage in heater, and air flow . 252 Discharge Ai[...]

506052−01 1 1/09 Page 34 Alarm Codes and T roubleshooting Alarm ID Action required to Clear/Recover Message Name 313 Indoor/Outdoor Unit Capacity Mismatch Incorrect indoor/outdoor capacity code selected. Check for proper configuring in installation instructions. Alarm is just a warning. The system will operate, but might not meet efficiency and c[...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 35 Alarm Codes and T roubleshooting Alarm ID Action required to Clear/Recover Message Name 410 Open Low Pressure Switch Remove any blockages or restrictions from indoor coils and/or fans. Check refrigerant charge and system operation. 41 1 Low Pressure Switch S trikes Lockout Check sys[...]

506052−01 1 1/09 Page 36 Wiring Diagrams − Communicating Systems icomfort  FURNACE (IFC) OR AIR HANDLER (AHC) icomfort  THERMOST A T icomfort  OUTDOOR AIR CONDITIONING OR HEA T PUMP UNIT OPTIONAL OUT- DOOR AIR SENSOR (SEE OAS NOTE) OPTIONAL DIS- CHARGE AIR SEN- SOR (SEE DAS NOTE) icomfort  Thermostat icomfort  Indoor Furnace or A[...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 37 Wiring Diagrams − Communicating Indoor/non−Communicating Outdoor Systems icomfort  Thermostat icomfort  Air Handler S tandard Outdoor Heat Pump ST ANDARD OUTDOOR HEA T PUMP UNIT − 1 OR 2 ST AGE icomfort  AIR HANDLER (AHC) icomfort  THERMOST A T icomfort  FURNACE[...]

506052−01 1 1/09 Page 38 Optional Accessories for use with any icomfort t system NOTE: 24V UV LIGHT APPLICA TIONS Neither icomfort furnace nor icomfort air handler transformer will have adequate V A to power 24V UV light applications. An additional transformer for UV light applications is required. icomfort  FURNACE (IFC) OR AIR HANDLER (AHC) [...]

icomfort  T ouch Screen 7−Day Programmable Thermostat Page 39 Optional Accessories for use with any icomfort t system icomfort  FURNACE OR AIR HANDLER icomfort  FURNACE OR AIR HANDLER icomfort  FURNACE OR AIR HANDLER icomfort  FURNACE OR AIR HANDLER HEP A BYP ASS FIL- TER X2680 HEP A INTERLOCK KIT P ASS INDOOR BLOWER MOTOR COMMON W[...]