Lennox International Inc 81M27, 81M28, 81M26 More Detailed Information on the User Settings

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More Detailed Information on the USER SETTINGS

DIFFERENTIAL SETTING

1ST DIFF

1˚F

2ND DIFF

2˚F

2ND DELAY

 

20 MIN

USER MENU

SELECT

DIFFERENTIAL SETTINGS

The temperature differential is your comfort level. The differential is the difference from setpoint before your heating or cooling system will turn on. The 81M27 and 81M28 models also have 2nd stage differential. In the Heat mode, if the temperature falls below (or above for cooling) the set- point by the 1st stage differential plus the 2nd stage differential, the second stage of heating (or cooling) will turn on.

The 2nd stage delay is a timed delay before the second stage will turn on if the setpoint has not been achieved within that time frame, and if the difference between the setpoint and the actual temperature is bigger than the first stage differential but smaller than the first stage differential plus the second stage differential.

SET COOLING LIMIT

LOWEST COOLING

 

45

°F

SETTING ALLOWED

 

 

 

USER MENU

SELECT

SET HEATING LIMIT

HIGHEST HEATING

 

90

°F

SETTING ALLOWED

 

 

 

USER MENU

SELECT

HEATING and COOLING LIMITS

To prevent individuals (probably your kids) from adjusting the ther- mostat too hot or too cold, you can limit the maximum setting for the heating and cooling modes. This will help you save on

energy costs.

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Contents 81M26 81M27 81M28 Do not USE with Commercial Equipment Important Safety InformationTable of Contents Menu How do I change the time of day and day of the week?How do I turn on the heating or cooling cycles? How does Intermittent FAN work? How do I cycle the fan?SET Temperature AT How do I temporarily change the temperature?70 ˚ Can I set a temporary adjustment for longer than 3 hours?70 ˚ How do I return to the Program Mode after being in HOLD?How do I set the Vacation Mode? 70˚Day to be set the same. MON-FRI allows for weekday How do I program my thermostat?SET Cool Monday Program How do I copy one day’s program to another day?How do I know what program is right for me? What is an event?How do I set the Dehumidify Levels? What is the difference between Basic and Precision modes?What is the Dew Point Adjustment Function? What happens if the mode is set to OFF?Can I change the Humidifier Maintenance Service Intervals? Or C What are the User settings?Setpoint Temperature Clock SettingsNumber of Events PER DAY Differential Settings More Detailed Information on the User SettingsSecurity Settings When would I need to change the User settings?Security Code System Setup What are the Installer settings?Balance Points Installer settingsAuxiliary Heat Residual CoolDeadband Setpoint Energy Efficient RecoveryHumiditrol Contact Information When would I need to change the Installer settings?Service Monitor Menu Temperature OffsetWhat do the lights below the display mean? How does Energy Efficient Recovery EER work?Where should I install a remote outdoor sensor? How does my remote outdoor sensor work?How do I know if the heating or cooling is on? What should I do if my power goes out?Who do I contact for more information? My energy bills are too high. Is there anything I can do? 504, 684M