Emerson 1F97-391 Automatic Heat/Cool Changeover, Adjustable Temperature Display

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Selectable Energy Management Recovery (EMR) EMR causes the thermostat to start operating the system early in order to make the building temperature reach your program setpoint at the time you specify. In heating, the thermostat will start 5 minutes early for every 1°F difference between the room tempera- ture and the next programmed temperature. In cooling, the thermostat uses 15 minutes per °F.

EXAMPLE: If the temperature in the room is 65°F and the thermostat is programmed for 70°F at 7 AM, the thermostat will start approximately 25 minutes early. The difference between the room temperature (65°F) and the setpoint (70°F) is 5°. 5° X 5 minutes per °F = 25 minutes. The setpoint on the display will actually change to display 70° about 25 minutes early.

The maximum time the thermostat can

start early in heating is 75 minutes. The maximum time the thermostat can start early in cooling is 3 hours and 45 minutes. Cooling can start earlier because it takes longer for cooling systems to reach the desired tempera- ture.

To select or deselect this feature, refer to the CONFIGURATION section (page 18, step 1).

Automatic Heat/Cool Changeover

If you have a heating/cooling system, the thermostat can be set to automati- cally switch the system from heating to cooling as needed. To set your thermostat to this operating mode, press SYSTEM button until AUTO is displayed on the screen.

Pressing the and buttons at the same time will change the setpoint temperature displayed to the

setpoint of the other mode. This will allow you to modify both the HEAT and COOL setpoints to accommodate a HOLD condition while in Automatic Changeover mode. To adjust, refer to the Configuration section (page18, step 7).

Adjustable Temperature Display

The room temperature display can be adjusted to read higher or lower by following the configuration menu and adjusting the temperature to a higher or lower value. The thermostat is calibrated at the factory to display a very accurate room temperature, but due to various conditions and/or personal preference, you may wish to adjust the thermostat display higher or lower (up to 5°F). For example, if the thermostat displays a room tempera- ture of 70° but you want it to display 73°, you can adjust it. To adjust, refer to the CONFIGURATION section (page 19, step 8).

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Contents SeriesTM Easy, Menu-Driven Set-Up Programming Introduction Installation/Configuration Introduction Introduction Specifications Precautions Page Configuring Programming Thermostat baseWiring Diagrams Letter Identification for Wiring Diagrams From heating system Through zone valve Typical wiring diagram for heat/cool, two-transformer system Typical wiring diagram for three-wire cooling system Typical wiring diagram for 24V humidifier system Typical wiring diagram for 120V humidifier system Configuration Jumpers Jumper locations Configuration Menu Configuration Menu cont’d Configuration Adjustable Anticipation Cool FAN-ON FAN-OFF DelayCompressor Lockout ConfigurationOptional Remote Temperature Sense Disabling HEAT, COOL, or Auto ModesHeating System Check Thermostat OperationFAN Operation Until FAN Auto isResetting Thermostat Cooling SystemCool, or Auto Manual Operation Bypassing the ProgramProgrammed Operation Planning Your Program Entering Your Program To Set the ClockProgramming Day Sample Heat Program Schedule Shows factory programming Day Sample Cool Program Schedule Shows factory programming Day Personal Heat Program Schedule Day Personal Cool Program Schedule Features Arm Chair Programming Pushbutton BacklightFactory Preprogramming Temporary Program OverrideAdjustable Temperature Display Automatic Heat/Cool ChangeoverProgrammable Fan Control Programmable Vacation Time/ Temperature OperationBattery Back-Up Daylight Savings Time ButtonThermostat Startup After Total Power Loss Keypad LockoutSystem Thermostat Diagnostics Air Filter Change-Out IndicatorCompressor Short-Cycle Protection Adjustable Humidity Display Humidifier Maintenance IndicatorHumidifier Control Monitoring Programmable Automatic Humidity ReductionFAQs 1F97-391 Word Check BatteryFAQs FAQs 1F97-391 FAQs 1F97-391 Troubleshooting Does not click, try the reset operation by pressing Temperature Display Adjustment in the Configuration To the Configuration section page 19, step Index Index Page Page Part no -6459A

1F97-391 specifications

The Emerson 1F97-391 is a sophisticated, programmable thermostat designed to enhance comfort and efficiency in residential heating and cooling systems. With its sleek design and user-friendly interface, this thermostat stands out for those looking to upgrade their home climate control.

One of the main features of the Emerson 1F97-391 is its ability to be programmed for up to seven days. This allows users to set different temperature schedules for different days of the week, which is particularly useful for families with varying routines. The thermostat also boasts a large, backlit display that makes it easy to read temperature settings and other information, even in low-light conditions.

In terms of technology, the Emerson 1F97-391 is equipped with Smart Response technology, which learns your heating and cooling patterns and adjusts accordingly. This feature is designed to ensure that your home reaches the desired temperature by the time you're scheduled to arrive, optimizing energy efficiency. Additionally, the thermostat can be paired with Wi-Fi connectivity, allowing for remote access through a mobile app. This means users can adjust their home’s temperature from anywhere, ensuring comfort upon arrival.

Another significant characteristic of the Emerson 1F97-391 is its compatibility with a wide range of HVAC systems, including single-stage and multi-stage systems, heat pumps, and gas or electric furnaces. This versatility makes it an ideal choice for a variety of homes and setups.

Moreover, the thermostat features a built-in humidity sensor, providing users with not only temperature control but also the ability to monitor and manage indoor air quality. This is crucial for maintaining a comfortable living environment and can contribute to overall health and well-being.

The Emerson 1F97-391 also incorporates energy-saving functions such as Eco mode and built-in reminders for filter changes. These features help users maintain their systems efficiently while ensuring optimal performance over time.

In summary, the Emerson 1F97-391 is a modern thermostat offering programmable capabilities, advanced technology like Smart Response, and compatibility with various HVAC systems. It encompasses features focused on energy efficiency and user convenience, making it an excellent choice for anyone seeking to enhance their home’s climate control system.
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