INSTALLATION

REMOVE OLD THERMOSTAT

1.Shut off electricity at the main fuse box until installation is complete. Ensure that electrical power is disconnected.

2.Remove the front cover of the old thermostat. With wires still attached, remove wall plate from the wall. If the old thermostat has a wall mounting plate, remove the thermostat and the wall mounting plate as an assembly.

3.Identify each wire attached to the old thermostat using the labels enclosed with the new thermostat.

4.Disconnect the wires from old thermostat one at a time. DO

NOT LET WIRES FALL BACK INTO THE WALL.

5.Install new thermostat using the following procedures.

ATTENTION!

This product does not contain mercury. However, this product may replace a unit which contains mercury.

Do not open mercury cells. If a cell becomes damaged, do not touch any spilled mercury. Wearing nonabsorbent gloves, take up the spilled mercury with sand or other absorbent material and place into a container which can be sealed. If a cell becomes damaged, the unit should be discarded.

Mercury must not be discarded in household trash. When the unit this product is replacing is to be discarded, place in a suitable container and return to White-Rodgers at 2895 Harrison Street, Batesville, AR, 72501-2117 for proper disposal.

ELECTRIC HEAT OR SINGLE-STAGE

HEAT PUMP SYSTEMS

This thermostat is configured from the factory to operate a heat/ cool, fossil fuel (gas, oil, etc.), forced air system. It is configured correctly for any system that DOES NOT require the thermostat to energize the fan on a call for heat. If your system is an electric heat or heat-pump system that REQUIRES the thermostat to turn on the fan on a call for heat, locate the ELECTRIC/GAS switch on the back of the thermostat (see fig. 1) and switch it to the ELECTRIC position. This will allow the thermostat to ener- gize the fan immediately on a call for heat. If you are unsure if the heating/cooling system requires the thermostat to control the fan, contact a qualified heating and air conditioning service person.

ATTACH THERMOSTAT BASE TO WALL

1.Remove the packing material from the thermostat. Gently pull the cover straight off the base. Forcing or prying on the thermostat will cause damage to the unit. If necessary, move the electric heat switch (see ELECTRIC HEAT SYSTEMS, above).

2.Connect wires beneath terminal screws on base using appropriate wiring schematic (see figs. 2 through 7).

3.Place base over hole in wall and mark mounting hole locations on wall using base as a template.

4.Move base out of the way. Drill mounting holes.

5.Fasten base loosely to wall, as shown in fig. 1, using two mounting screws. Place a level against bottom of base, adjust until level, and then tighten screws. (Leveling is for appearance only and will not affect thermostat operation.) If you are using existing mounting holes, or if holes drilled are too large and do not allow you to tighten base snugly, use plastic screw anchors to secure subbase.

Screw anchors

Mounting

holes Electric/Gas switch

Mounting holes

Figure 1. Thermostat Base

6.Push excess wire into wall and plug hole with a fire-resistant material (such as fiberglass insulation) to prevent drafts from affecting thermostat operation.

BATTERY LOCATION

2 "AA" alkaline batteries are included in the thermostat at the factory with a battery tag to prevent power drainage. You must remove the battery tag to engage the batteries.

If "LO BATT" is displayed, the batteries are low and should be replaced with fresh "AA" Energizer® alkaline batteries. To re- place batteries, install the batteries along the top of the base (see Fig. 1). The batteries must be installed with the positive (+) end to the left.

HYDRONIC (HOT WATER OR STEAM)

HEATING SYSTEMS

This thermostat is set to operate properly with a forced-air heating system. If you have a hydronic heating system (a system that heats with hot water or steam), you must set the thermostat to operate properly with your system. Change the second option in the configuration menu to SL (see CONFIGURATION MENU, page 4).

CHECK THERMOSTAT OPERATION

If at any time during testing your system does not operate properly, contact a qualified service person.

Turn on power to the system.

Fan Operation

If your system does not have a G terminal connection, skip to Heating System.

1.Move FAN switch to ON position. The blower should begin to operate.

2.Move FAN switch to AUTO position. The blower should stop immediately.

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White Rodgers 1F87-251 Installation, Remove OLD Thermostat, Attach Thermostat Base to Wall, Check Thermostat Operation
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1F87-251 specifications

The White Rodgers 1F87-251 is an advanced digital thermostat designed to provide homeowners with efficient climate control and energy savings. This versatile thermostat combines user-friendly features with cutting-edge technology to meet the demands of modern heating and cooling systems.

One of the main features of the 1F87-251 is its programmable functionality, allowing users to set customized heating and cooling schedules. This program capability enables users to adjust temperatures according to their daily routines, enhancing comfort while minimizing energy consumption. With up to four program periods per day, homeowners can easily create a schedule that reflects their lifestyle, ensuring the system operates efficiently when needed.

The thermostat boasts a user-friendly backlit display that shows the current temperature, set temperature, and system status at a glance. The intuitive interface makes programming and adjustments simple, even for those who may not be technologically savvy. Additionally, the large buttons and clear display improve accessibility, making it suitable for users of all ages.

Importantly, the White Rodgers 1F87-251 incorporates Smart Recovery technology, which allows the thermostat to calculate the optimal time to begin heating or cooling a space to reach the desired temperature by a specified time. This feature not only enhances comfort but also contributes to energy efficiency.

The 1F87-251 is compatible with a wide range of heating and cooling systems, including gas, oil, and electric systems, as well as heat pumps. This compatibility ensures that it can be seamlessly integrated into most residential HVAC setups. Moreover, the thermostat includes a staging feature, allowing for multi-stage heating or cooling, which helps provide a more consistent temperature control.

Another important aspect of the White Rodgers 1F87-251 is its energy-saving mode. By employing energy-saving features, such as setting higher temperatures during the summer and lower during the winter when the home is unoccupied, homeowners can significantly reduce their energy bills.

The thermostat's battery backup ensures that settings are retained even in the event of a power outage, providing peace of mind. Overall, the White Rodgers 1F87-251 is a highly functional and efficient thermostat that combines modern technology with ease of use, making it an excellent choice for those looking to enhance their home comfort while reducing energy usage.
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