Lennox ComfortSense 7500 Installation And Setup Manual
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Lennox ComfortSense 7500 Installation And Setup Manual

Color touchscreen programmable commercial thermostat
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See also: User Manual , Installation and Setup Manual
Installation and Setup
Guide
Color Touchscreen
Programmable Commercial
Thermostat
ComfortSense
®
7500
Model: C0STAT06FF1L
Cat: 13H15
507506-01
10/2015
Supersedes 8/2015

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Summary of Contents for Lennox ComfortSense 7500

  • Page 1 Installation and Setup Guide Color Touchscreen Programmable Commercial Thermostat ® ComfortSense 7500 Model: C0STAT06FF1L Cat: 13H15 507506-01 10/2015 Supersedes 8/2015...

  • Page 2: Table Of Contents

    Table of Contents Shipping and Packing List Shipping and Packing List ... ® ComfortSense 7500 Thermostat ..® ComfortSense 7500 touchscreen, 7-day Features ......programmable thermostat with back plate INSTALLATION Wall plate...

  • Page 3: Comfortsense ® 7500 Thermostat

    Wall Plate Dimensions (H x W) ® ComfortSense 7500 Commercial Thermostat (C0STAT06FF1L) Plate dimensions: 4-1/2” x 5-3/4” (114 x 146mm) (Catalog No. 13H15) Features Description Compressor Short Cycle Protection ® The ComfortSense 7500 commercial thermostat This thermostat is equipped with automatic (C0STAT06FF1L) is an electronic 7-day universal compressor protection to prevent potential multi‐stage...
  • Page 4 IMPORTANT WARNING ® In all applications, the ComfortSense Model Improper installation, adjustment, alteration, 7500 thermostat can only be used with all resi­ service or maintenance can cause property dential units and approved commercial split‐ damage, personal injury or loss of life. system matches, and those which meet the fol­...

  • Page 5: Installing Thermostat

    THERMOSTAT INSTALLATION Before beginning installation, note the type of 2. Short (jumper) across terminals on the gas equipment, number stages, valve or at the system control to test accessories being installed. This thermostat is a installation. This will damage the thermostat 24VAC low-voltage thermostat and requires a and void the warranty.
  • Page 6 Not close to heat generating 4. Use steps A through J (step J applicable equipment such as kitchen when using provided wall plate) to install the equipment. thermostat. Not in an enclose environment unless a remote indoor sensor is used. CUT OR DRILL A SMALL HOLE FOR THERMOSTAT WIRING Hot or cold air from ducts.
  • Page 7 TRIM 1/4” INSULATION FROM END OF EACH WIRE (USE A LEVEL) ALIGN WALL PLATE 1/4” DRILL 3/16” HOLES AT MARKED LOCATIONS ON WALL FOR WALL ANCHORS USE UNIT WALL PLATE AS TEMPLATE TO MARK DESIRED MOUNTING HOLE LOCATIONS ON WALL NOTE: INSTALLATION OF WALL PLATE IS OPTIONAL.
  • Page 8 Thermostat Installation with Wall Plate F - Place wall plate H - Attach back plate J - Attach thermostat to over holes in wall. to wall plate. back plate. G - Insert wall anchors I - Insert provided screws through back and wall through wall plate into wall.

  • Page 9: Wiring Thermostat

    WIRING THERMOSTAT TERMINAL DESIGNATIONS Ti - Remote indoor temperature sensor Below are the terminal designations and a general Tc - Sensor common terminal description of their purpose. To - Outdoor or discharge air temperature 1. Connect wiring between thermostat, indoor sensor and outdoor units.

  • Page 10: Settings Menu

    Settings menu notifications 2. Touch and hold the settings option on the performance report menu. This will display the installer settings notice and then menu. edit schedules installer settings < settings installer settings must be set by qualified person. Figure 2. Menu Screen confirm Menu 1.
  • Page 11 SENSORS SETTINGS Installer Settings Use the following information to install sensors SYSTEM SETUP and setup in the user interface. Sets the thermostat for operation with either a heat pump or condenser unit and defines the number of Indoor Outdoor < compressor stages and the number of backup heat stages (gas, electric or both).
  • Page 12 Outdoor Sensor (small commercial split This thermostat can support one to five remote systems only) indoor temperature sensors. Users has three options to select from under Installer Settings > An outdoor temperature sensor (X2658) is sensor settings > indoor sensor: ®...
  • Page 13 One sensor Two sensors - - (1) 47W36 (2) 47W37 Three sensors - Four sensors - (2) 47W36 and (4) 47W36 (1) 47W37 Five sensors - (3) 47W36 and (2) 47W37 Figure 6. Indoor Sensor Configurations (Option 2, 20K Setting)
  • Page 14 RESIDUAL COOL 3. When in heat mode and the outdoor temperature is between the programmed Default is 0 seconds. This is the time, in seconds, Low and High Balance Points, then heat that the fan runs after a call for cooling is satisfied pump heating and backup heat can be used.
  • Page 15 DEADBAND SSR STAGE 2 LOCK OUT Default is 20 minutes. Use the + or - option to set Default is 2°F. The deadband setting is the the number of minutes before the programmed minimum difference between the cooling and event time that stage 2 is allowed to operate (20 to heating set points.
  • Page 16 Table 1. Smooth Set back Recovery (SSR) & SSR Stage 2 Lock Out Operation Equipment Available SSR = Enabled; SSR = Enabled; SSR Stage 2 lock out = SSR Stage 2 lock-out = disabled (off) enabled Run HP (Y1) only; all backup 1 stage HP with 1 or 2 heat (W1/W2) enabled 20 - Run HP (Y1) and have available backup...
  • Page 17 Table 1. Smooth Set back Recovery (SSR) & SSR Stage 2 Lock Out Operation (continued) Equipment Available SSR = Enabled; SSR = Enabled; SSR Stage 2 lock out = SSR Stage 2 lock-out = disabled (off) enabled Run HP (Y1/Y2) until a 2nd stage de­ Run HP (Y1/Y2) only;...
  • Page 18 STAGE DELAY TIMER STAGE 2 THROUGH 4 DIFF Default ON. When ON, all stage delay timers (Where applicable) The default is 1.0°F but can be (stages 2, 3, and 4) are enabled and will serve to programmed between 0.5° and 8.0°F in 0.5°F bring on additional stage(s) of cooling or heating increments.
  • Page 19 STAGE 2 HP LOCK TEMP LOCK TEMP set point. Scroll to STAGE 2 HP LOCK TEMP; touch ENTER. Use - + option to When disabled the heat pump stage 2 operates select a LOCK TEMP between -40 and 75ºF. normally). Enable this setting in dual fuel Touch <...
  • Page 20 1st stage 1st stage Stages Stg1 Differential Locked = 2nd stage 2nd stage Stg2 Differential 1st stage 1st stage Stages Stg1 Differential Locked = 2nd stage 2nd stage Stg2 Differential SET­ SP -1.5 SP -1.0 SP -0.5 SP +0.5 SP +1.0 SP +1.5 SP +2.0 POINTS:...
  • Page 21 1st stage 1st stage Stages Stg1 Differential Locked = 2nd stage 2nd stage Stg2 Differential 3rd stage 3rd stage Stg3 Differential 1st stage 1st stage Stages Stg1 Differential Locked = 2nd stage 2nd stage Stg2 Differential 3rd stage 3rd stage Stg3 Differential SET­...
  • Page 22 1st stage 1st stage Stages Stg1 Differential Locked = 2nd stage 2nd stage Stg2 Differential 3rd stage 3rd stage Stg3 Differential 4th stage 4th stage Stg4 Differential 1st stage 1st stage Stages Stg1 Differential Locked = 2nd stage 2nd stage Stg2 Differential 3rd stage 3rd stage...
  • Page 23 1st stage 1st stage Stages Stg1 Differential Locked = 2nd stage 2nd stage NO or Stg2 Differential SET­ SP -3.0 SP -2.5 SP -2.0 SP -1.5 SP -1.0 SP -0.5 SP +0.5 POINTS: Figure 11. Heating - Dual Fuel - 2 Stage (1 compressor / 1 backup) 1st stage 1st stage Stages...
  • Page 24 1st stage 1st stage Stages Stg1 Differential Locked = 2nd stage 2nd stage Stg2 Differential 3rd stage 3rd stage Stg3 Differential 1st stage 1st stage Stages Stg1 Differential Locked = 2nd stage 2nd stage Stg2 Differential 3rd stage 3rd stage Stg3 Differential SET­...
  • Page 25 1st stage 1st stage Stages Stg1 Differential Locked = 2nd stage 2nd stage Stg2 Differential 3rd stage 3rd stage Stg3 Differential 4th stage 4th stage Stg4 Differential 1st stage 1st stage Stages Stg1 Differential Locked = 2nd stage 2nd stage Stg2 Differential 3rd stage 3rd stage...
  • Page 26 COMPRESSOR PROTECT To set a reminder go to the User Settings screen and select reminders. The reminder setting Default is ON and it can be turned OFF, however screen will appear and a list all of the predefined only for one compressor cycle and then it will reminders plus the two custom reminders will revert back to ON.
  • Page 27 Table 2. Energy Saving Set Points Fan Setting Time Heating Cooling The thermostat default Occ1 70°F (21°C) 76°F (24°C) Auto setting is two period on­ ly. To use four periods, Unocc1 55°F (10°C) 85°F (29.5°C) Auto change the appropriate Occ2 70°F (21°C) 76°F (24°C) Auto...

  • Page 28: Dehumidify

    Dehumidify NOTICE Terminal D State Mode Setting De-energized for dehumidification Risk of equipment damage. and energized for all other modes. Can cause compressor failure. De-energizing D terminal is used Normal, Max to reduce the speed of the indoor In dual fuel system applications, do not turn on or Humiditrol blower during dehumidification.
  • Page 29 A selection option under Installer settings > Humidity settings > Dehumidify > Dehumidify In this mode, dehumidification occurs if all mode must be enabled before the user will have maximum conditions are true, except cooling control over the humidity. The mode selected demand may or may not be present.
  • Page 30 ® HUMIDITROL 2. Cooling demand is not present, 3. Outdoor temperature is less than 95ºF, This setting is for commercial split systems only. If Humiditrol is enabled in the installer settings, then 4. Indoor temperature is not cooler than 65ºF or this adjustment affects overcooling operation.
  • Page 31 Note: If the last thermostat demand was a heating As a precaution, regardless of how low the heating ® demand, the thermostat does not require a cooling point been set, Humiditrol ® demand before Humiditrol operation. dehumidification is inhibited below 65ºF indoor temperature.

  • Page 32: Unit Part (Catalog) And Serial Number

    /cool mode so either through an opening in the back of base plate. This mode can run to re-satisfy the temperature identifies the Lennox Catalog Number, Part setting. Day and time (schedules) may be off due Number and Serial Number. Separate the base...
  • Page 33 Appendix A. Flow Diagrams START HUMIDITROL RUN EQUIPMENT there a cooling IN NORMAL COOL­ Is indoor demand ING MODE temperature > 2ºF above heating set point RUN EQUIPMENT there a heating IN NORMAL HEAT­ demand ING MODE Humiditrol Com­ indoor temp. greater than the heat fort Adjust setting setpoint plus the cool...

  • Page 34: Appendix A. Humiditrol

    Appendix B. Diagnostic Information Priority Action to Clear / Error Screen 0:high Message Recovery Condition System Action 1:middle Code Text Type Condition 2:low All stages of heat are turned off High temperature protec­ Once temperature high tem­ by safety relay. tion when outdoor ambient drops below 96°F perature...
  • Page 35 Priority Action to Clear / 0:high Error Screen Message Recovery Condition System Action 1:middle Code Text Type Condition 2:low For Outdoor Temperature Sensor: No Humiditrol or Humidity oper­ ation. D terminal stays activated and other operation will continue to operate. Thermostat will stop the system operation if input from requires outdoor temperature informa­...
  • Page 36 Priority Action to Clear / Error Screen Message 0:high Recovery Condition System Action Code Text Type 1:middle Condition 2:low With humidifier or dehu­ midifier) and conditions are All humidity operation will stop as follows: and the reading for humidity 0%: Stat will detect error will not be valid.

  • Page 37: Appendix C. Reminder Information

    Appendix C. Reminder Information Error Message Screen Text Action to Clear / Recovery Condition Code Type replace media filter replace UV lamp replace humidity pad routine system check-up reminder Touch either done to clear the reminder or remind later button. replace metal insert for pure air user editable user editable...

  • Page 38: Appendix C. Supported Configurations

    Appendix D. Supported Configurations This thermostat support air conditioner and heat pump systems with one or two speed compressors. It also supports dual-fuel and Humiditrol accessory. For all possible configuration see table below. Back­ up/In­ Backup/ 2nd Em door Indoor Heat Heat heat...
  • Page 39 Back­ up/In­ Backup/ door 2nd Em Indoor Heat Heat heat Cool Cool Comp. Heat Heat 3rd Heat 4th Heat 1st Em Heat Cool Heat Stage Stage Stage Stage Stage stages Stages Stages Stage Stage Stage Stages GAS/OIL ELEC. W1+W2 NONE GAS/OIL ELEC.

  • Page 40: Appendix D. Installer Checklist

    Appendix E. Installation Checklist Item Item Number Is the thermostat level where mounted on the wall? Is the thermostat installed in a controlled space when using dehumidification control with remote sensor? Is the thermostat installed away from direct sunlight or dis­ charge air vents? Has the thermostat been wired correctly based on the type of equipment installed (air handler, outdoor unit and accessories?
  • Page 41 INDEX RTU/Aux Dehumidifier, 30 Diagnostic Information, 35 Dimensions, 3 Balance Points, Low, High, 15 Economizer, 32 Energy Saving Default Settings, 28 Compressor Protection, 27 Compressor Short Cycle Protection, 3 Features, 3 Configurations, 20 Configurations Supported, 39 H/C Stages Locked In, 19 Contractor Information, 16 Humidification Sensor Fault, 32 Custom Reminders, 27...
  • Page 42 Stage 2 HP Lock Temp, 20 Stage 2 through 4 Delays, 19 Outdoor Temperature Sensor, 13 Stage 2 through 4 Differential, 19 Stage Delay Differentials, 19 Reminder Information, 38 Stage Delay Timer, 19 Remote Indoor Temperature Sensors, 13 System Setup, 12 Reset Settings, 27 System Test Modes, 28 Residual Cool, 15...

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