HONEYWELL RTH221 (02) PDF MANUAL

This manual covers the RTH2300 and RTH221 models.

To prevent possible compressor damage, do not operate cooling system when outdoor temperature is below 50°F (10°C).

For assistance with this product please visit http://yourhome.honeywell.com or call Honeywell Customer Care toll-free at 1-800-468-1502.

• Backlit display on RTH2300

• Displays ambient (measured) temperature at all times

• One-touch access to setpoint temperature

• Preset program settings

• Temporary and permanent override of schedule

• Built-in compressor protection

Your new thermostat is pre-programmed and ready to go. All you have to do is set the time and day. Then check the settings below and change if needed:

1. Set time and day (required for proper operation).

2. Select system setting: Preset to Off. (To change, see relevant instructions).

3. Select fan setting: Preset to Auto. (To change, see relevant instructions).

4. Program schedules: Preset to energy-saving levels while you’re at work or asleep. (To change, see relevant instructions).

You can override the program schedule at any time, and manually adjust the temperature.

Set: Press to set time/day/schedule.

Hold: Press to override programmed temperature control.

Run: Press to resume program schedule.

The screen is lit for 12 seconds when you press any button.

Use the Up or Down Temperature adjustment buttons.

• Heat: Heating system control.

• Off: All systems off.

• Cool: Cooling system control.

On: Fan runs continuously.

Auto: Fan runs only when heating or cooling system is on.

The Setpoint indicator appears when the setpoint temperature is displayed.

“Lo Batt” indicates a low battery warning.

The ambient (measured) temperature is normally displayed. To view the setpoint temperature, press the Up or Down button once. The setpoint temperature will appear for five seconds.

1. Press the SET button, then press the Up or Down arrow to set the clock time.

2. Press the SET button, then press the Up or Down arrow to select the day of the week.

3. Press RUN to save & exit.

Note: If the clock flashes, the thermostat will follow your settings for the Monday “Wake” time period until you reset the time and day.

If the clock flashes, the thermostat will follow your settings for the Monday “Wake” time period until you reset the time and day.

Set the SYSTEM switch to control your heating or cooling system, depending on the season.

• Cool: Cooling system control.

• Off: All systems are off.

• Heat: Heating system control.

CAUTION: EQUIPMENT DAMAGE HAZARD. To prevent possible compressor damage, do not operate cooling system when outdoor temperature is below 50°F (10°C).

Set the FAN switch to Auto or On.

In “Auto” mode (the most commonly used setting), the fan runs only when the heating or cooling system is on.

If set to “On,” the fan runs continuously.

It’s easy to program your system for maximum energy savings. You can program four time periods each day, with different settings for weekdays and weekends.

WAKE: Set to the time you awaken and the temperature you want during the morning, until you leave for the day.

LEAVE: Set to the time you leave home and the temperature you want while you are away (usually an energy-saving level).

RETURN: Set to the time you return home and the temperature you want during the evening, until bedtime.

SLEEP: Set to the time you go to bed and the temperature you want overnight (usually an energy-saving level).

This thermostat is pre-set to use energy saving program settings. We recommend these settings, since they can reduce your heating/cooling expenses by as much as 33%. (See instructions on adjusting times and temperatures if needed.)

1. Press SET until Set Schedule is displayed.

2. Press Up or Down arrow to set your weekday Wake time (Mo-Fr), then press SET.

3. Press Up or Down arrow to set the temperature for this time period, then press SET.

4. Set time and temperature for the next time period (Leave). Repeat steps 2 and 3 for each weekday time period.

5. Press SET to set weekend time periods (Sa & Su), then press RUN to save & exit.

Note: Make sure the thermostat is set to the system you want to program (Heat or Cool).

1. Press SET until Set Schedule is displayed.

2. Press Up or Down arrow to set your Wake time (Mo-Su), then press SET.

3. Press Up or Down arrow to set the temperature for this time period, then press SET.

4. Set time and temperature for the next time period (Leave). Repeat steps 2 and 3 for each time period.

5. Press RUN to save & exit.

Note: Make sure the thermostat is set to the system you want to program (Heat or Cool).

Press the Up or Down arrow to immediately adjust the temperature. This will temporarily override the temperature setting for the current time period. “Temporary” will appear on the display. The new temperature will be maintained only until the next programmed time period begins. To cancel the temporary setting at any time, press RUN.

Note: Make sure the thermostat is set to the system you want to control (heat or cool).

Press HOLD to permanently adjust the temperature. This will override the temperature settings for all time periods. The “Hold” feature turns off the program schedule and allows you to adjust the thermostat manually, as needed. Whatever temperature you set will be maintained 24 hours a day, until you manually change it, or press RUN to cancel “Hold” and resume the program schedule.

Note: Make sure the thermostat is set to the system you want to control (heat or cool).

This feature helps prevent damage to the compressor in your air conditioning or heat pump system. Damage can occur if the compressor is restarted too soon after shutdown. This feature forces the compressor to wait 5 minutes before restarting.

During the wait time, the display will flash the message Cool On (or Heat On if you have a heat pump). When the safe wait time has elapsed, the message stops flashing and the compressor turns on.

If the filter reminder is turned on during installation, the words Change Filter will flash on the screen when the filter needs to be replaced.

After you replace the air filter, press and hold the RUN button for 3 seconds to reset the alert.

1. Pull at the bottom to remove the thermostat from the wallplate.

2. Turn thermostat over, insert two fresh AAA alkaline batteries.

3. Reinstall thermostat.

Install two fresh AAA batteries when Lo Batt flashes on the screen. Lo Batt appears for 60 days before the batteries are depleted. Replace batteries once a year, or when you will be away for more than a month.

Most settings are stored in non-volatile (permanent) memory. Only the clock and the day must be set after you replace the batteries.

Set the System switch to Off before removing the batteries. Otherwise, the heating/cooling system could remain activated even when batteries are removed.

Pull at the bottom to remove thermostat from wallplate. Turn thermostat over to find model number and date code.

• Make sure furnace door is closed securely.

• Make sure fresh AAA alkaline batteries are correctly installed.

• Set system switch to Heat. Make sure the temperature is set higher than the Inside temperature.

• Set system switch to Cool. Make sure the temperature is set lower than the Inside temperature.

• Wait 5 minutes for the system to respond.

Make sure heating and cooling temperatures are set to acceptable ranges:

• Heat: 40° to 90°F (4.5° to 32°C).

• Cool: 50° to 99°F (10° to 37°C).

Compressor protection feature is engaged. Wait 5 minutes for the system to restart safely, without damage to the compressor.

Set the System switch to Heat, and set the temperature level above the current room temperature.

Set the System switch to Cool, and set the temperature level below the current room temperature.