stat, if necessary, put the thermostat back on the wall, and restore 24 VAC power. To set the thermostat for automatic changeover

after programming, press

SYSTEM

to set the

SWITCH

thermostat to AUTO (the setpoint tempera- ture display is blank in the AUTO mode). The system will now automatically switch between heating and cooling, depending on the actual room temperature.

Automatic Changeover

ON

Group B

Option

Switches

1 2 3

Switch #1 ON

Switch #2 OFF

Switch #3 (see Energy Management Recovery)

NOTE

In the AUTO mode, the thermostat will not allow the temperature separation between the high- est heat setting and the lowest cool setting to be less than 1°F. For example, if the highest heat setting is 76°F, the lowest cool setting cannot be below 77°F (see diagram below).

79

78 COOLING TEMPERATURES

77 DEAD BAND 1°F

76

75HEATING TEMPERATURES

For manual changeover, Group B option switches #1 and #2 should be in the OFF position.

•TWO HOUR TEMPERATURE OVER-

RIDE — Press or until the dis- play shows the temperature you want. The

14

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White Rodgers 1F90-71 manual Automatic Changeover, TWO Hour Temperature Over
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1F90-71 specifications

The White Rodgers 1F90-71 is a versatile and efficient programmable thermostat designed to enhance home comfort and energy savings. Known for its user-friendly interface and advanced features, this thermostat is an excellent choice for homeowners looking to optimize their heating and cooling systems.

One of the standout features of the 1F90-71 is its 7-day programmable scheduling capability. This allows users to set different temperatures for each day of the week, accommodating individual schedules and preferences. With this functionality, homeowners can ensure their HVAC systems operate efficiently, reducing energy consumption when occupants are not at home while still providing comfort during peak hours.

The thermostat boasts a large, easy-to-read display, which provides clear visual feedback on current temperatures and settings. The intuitive interface simplifies programming and adjustments, making it accessible even for those who may not be tech-savvy. Additionally, the color touchscreen enhances the aesthetic appeal, adding a modern touch to any home.

Another noteworthy characteristic of the White Rodgers 1F90-71 is its compatibility with a variety of heating and cooling systems. It supports single-stage and multi-stage heating and cooling, as well as heat pumps with auxiliary heat, making it a flexible solution for different home configurations. This compatibility ensures that the thermostat can effectively control the temperature in both conventional and more advanced systems.

The 1F90-71 also integrates advanced features, such as Smart Recovery technology. This allows the thermostat to learn how long it takes to reach the desired temperature and begin adjusting the system proactively. This feature enhances comfort while minimizing energy usage, which results in lower utility bills.

Moreover, the thermostat offers a filter change reminder, helping homeowners maintain their HVAC systems in optimal condition. Regular filter changes ensure better air quality and system efficiency, thus prolonging the life of the equipment.

In summary, the White Rodgers 1F90-71 is a powerful programmable thermostat that combines convenience, compatibility, and efficiency. Its advanced scheduling, intuitive interface, and smart technologies make it a reliable choice for modern homes, ultimately helping homeowners achieve enhanced comfort while reducing their energy footprint.
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