Installation, Remove the Old Thermostat | White Rodgers 1F86EZ-0251

Installation

Remove the Old Thermostat

1.Turn off power to the heating and cooling system.

2.Remove the front cover of the old thermostat, this usually pulls off.

3.Loosen the screws that hold the thermostat to the wall.

4.Identify each wire attached to the old thermostat.

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

NOT LET WIRES FALL BACK INTO THE WALL.

Install the New Thermostat

1.Open the battery door and detach the new thermostat cover from the base.

Battery

Door

Mounting

Hole

Mounting

Hole

O/B

Switch

2.With the base flush against the wall, mark mounting hole locations on wall.

3.Move base out of the way and drill mounting holes.

4.Push wires through wire opening.

5.Position the base on the wall again and screw the mounting screws into the wall anchors.

6.Connect each wire coming from the wall to its corresponding terminal as shown in Fig. 2 thru 4 on page 7.

Press down

	W
Insert	O/B
Wire	C
	C
	R

Wire Terminal Block

NOTE

Wires will not be connected to all terminals of the terminal block.

Gas/Elec	Opening
Switch	for wires

Figure 1. Thermostat Base

Set Switches

Gas / Elec Switch

If your system is a heat pump, the GAS/ELEC Switch must be set to ELEC (see Fig. 1) If your system is a single stage, the switch must be set to GAS. The switch setting must agree with the system configuration selected in the configuration menu.

O/B Terminal Switch Selection

The O/B switch on this thermostat is factory set to the “O” position. This will accommodate the majority of heat pump applications, which require the changeover relay to be energized in COOL. If the thermostat you are replacing or the heat pump being installed with this thermostat requires a “B” terminal, to energize the changeover relay in HEAT, the O/B switch must be moved to the “B” position.

Check Thermostat Operation

Heating System

1.Move SYSTEM switch to HEAT position. If the heating system has a standing pilot, be sure to light it.

2.Press to adjust thermostat setting to 1° above room temperature. The heating system should begin to operate.

3.Press to adjust temperature setting below room temperature. The heating system should stop operating.

Fan Operation

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

1. Move SYSTEM switch to OFF position.

2.Move fan switch to ON position. The blower should begin to operate.

3.Move fan switch to AUTO position. The blower should stop immediately.

Cooling System

1.Move SYSTEM switch to COOL position.

2.Press to adjust thermostat setting below room temperature. The blower should come on immediately on high speed, followed by cold air circulation. However, if the setpoint temperature is flashing, the compressor lockout feature is operating (see Configuration menu, item 5).

3.Press to adjust temperature setting above room temperature. The cooling system should stop operating.

1F86EZ-0251 specifications

The White Rodgers 1F86EZ-0251 is a sophisticated digital thermostat that caters to the modern homeowner's need for precision control and energy efficiency. Designed to maximize comfort while minimizing energy consumption, this device stands out in the competitive thermostat market due to its array of features and user-friendly technologies.

One of the primary characteristics of the White Rodgers 1F86EZ-0251 is its intuitive interface, featuring a large easy-to-read display that allows users to effortlessly navigate through settings and options. The clarity of the screen contributes to a straightforward user experience, which is vital when adjusting temperature settings, scheduling, or accessing system information.

The 1F86EZ-0251 employs advanced temperature control technologies, including adaptive recovery, which optimizes the comfort level by learning how long it takes to reach the desired temperature at different times of the day. This feature not only enhances user comfort but also reduces energy usage, as the system can precondition the environment efficiently without unnecessary heating or cooling.

Another notable technology within this thermostat is its 7-day programmable scheduling capability. Users can customize their heating and cooling schedules for each day of the week, ensuring that the temperature is maintained at optimal levels when home and adjusted when away. This kind of schedule flexibility aids in significant energy savings throughout the year.

The White Rodgers 1F86EZ-0251 is also equipped with a filter change indicator, ensuring that users are reminded to maintain their HVAC system regularly. This feature helps prolong the life of the equipment and improves indoor air quality by ensuring the air filter is clean.

Moreover, compatibility is a strong point for the 1F86EZ-0251, as it works with various heating and cooling systems, including gas, oil, and electric systems. This versatility makes it an ideal choice for a wide range of households and HVAC setups.

In terms of installation, the unit is designed for easy mounting and comes with a built-in level to ensure proper alignment. This simplifies the installation process for DIY homeowners.

Overall, the White Rodgers 1F86EZ-0251 stands as a reliable option for those seeking a balance of comfort, control, and efficiency in their home heating and cooling management.