Lennox International Inc 81M27 Installer settings, Auxiliary Heat, Residual Cool, Balance Points

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INSTALLER settings (continued)

AUXILIARY HEAT

STANDARD - COMP. =ON

ADD ON - COMP. =OFF

AUXILIARY HEAT

With the 81M28, either an electric or gas heat source can be used as an auxiliary backup to the heat pump. Choose STANDARD-COMP=ON if an electric backup source is to be used. Choose ADD ON-COMP=OFF is a gas backup source is to be used.

INSTALL MENU

SELECT

RESIDUAL COOL

SECONDS DELAY

 

60

 

INSTALL MENU

SELECT

 

 

 

 

 

 

 

BALANCE POINTS

 

 

 

LOW BALANCE

 

45

˚F

HIGH BALANCE

 

95

˚F

INSTALL MENU

SELECT

 

 

 

 

 

AUTO CHANGEOVER

DISABLE

ENABLE

INSTALL MENU

SELECT

RESIDUAL COOL

In order to get greater efficiency from the cooling system, the fan can be programmed to run for 0 (OFF), 30, 60, 90, or 120 seconds after the air conditioner has shut off. Residual cool may interfere with proper system operation. Consult the system operating manual.

BALANCE POINTS

This screen will appear only when the outdoor sensor (Part #46M98) is connected to the 81M28 thermostat. When this sensor is used with the 81M28, you can set the lower and upper temperatures to disable or enable 2nd stage heat.

At outdoor temperatures above the high balance point, only the heat pump is allowed to run. At outdoor temperatures below the low balance point, only the auxiliary heat source is allowed to run. At outdoor temperatures between the high and low balance points, both the heat pump and the auxiliary heat source are allowed to run.

AUTO CHANGEOVER

When turned on, the thermostat will switch automatically between heating and cooling to maintain the optimal temperature in your home.

When Auto Changeover is enabled in Installer Settings, it will also appear in the HEAT/COOL menu described earlier. Auto Changeover must be enabled in both places in order to function.

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Contents 81M26 81M27 81M28 Important Safety Information Do not USE with Commercial EquipmentTable of Contents How do I change the time of day and day of the week? MenuHow do I turn on the heating or cooling cycles? How do I cycle the fan? How does Intermittent FAN work?How do I temporarily change the temperature? SET Temperature ATCan I set a temporary adjustment for longer than 3 hours? 70 ˚How do I return to the Program Mode after being in HOLD? 70 ˚70˚ How do I set the Vacation Mode?How do I program my thermostat? Day to be set the same. MON-FRI allows for weekdaySET Cool How do I copy one day’s program to another day? Monday ProgramWhat is an event? How do I know what program is right for me?What is the difference between Basic and Precision modes? How do I set the Dehumidify Levels?What is the Dew Point Adjustment Function? What happens if the mode is set to OFF?Can I change the Humidifier Maintenance Service Intervals? What are the User settings? Or CSetpoint Temperature Clock SettingsNumber of Events PER DAY More Detailed Information on the User Settings Differential SettingsSecurity Settings When would I need to change the User settings?Security Code What are the Installer settings? System SetupResidual Cool Installer settingsAuxiliary Heat Balance PointsDeadband Setpoint Energy Efficient RecoveryHumiditrol Temperature Offset When would I need to change the Installer settings?Service Monitor Menu Contact InformationHow does my remote outdoor sensor work? How does Energy Efficient Recovery EER work?Where should I install a remote outdoor sensor? What do the lights below the display mean?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
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