Honeywell RTH2310B Owner's Manual

RTH2310

69-2229ES-05

Programmable Thermostat

Operating Manual

CAUTION: EQUIPMENT DAMAGE HAZARD

To prevent possible compressor damage, do not use Cooling mode when the outdoor temperature is below 50 °F (10 °C).

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For assistance with this product please visit http://yourhome.honeywell.com

or call Honeywell Customer Care toll-free at 1-800-468-1502.

Read and save these instructions.

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Table of contents

RTH2310 Programmable Thermostat

About your new thermostat

Thermostat features ..................................... 2

Early Start..................................................... 3

Compressor protection ................................. 3

Quick reference to controls .......................... 4

Quick reference to display............................ 5

Quick start .................................................... 6

Programming & Operation

Set the clock................................................. 7

Select system setting (Heat/Cool) ................ 8

Select fan setting (Auto/On) ......................... 9

Using the schedule................................ 10-13

Temporary schedule override..................... 14

Permanent schedule override .................... 15

Appendices

Filter replacement........................................16

Battery replacement ....................................17

In case of difficulty.......................................18

Customer assistance...................................19

Limited warranty ..........................................20

Your new thermostat is pre-programmed

and ready to go!

See page 6 for quick start.

Operating Manual

About your new thermostat

Your new Honeywell thermostat has been designed to give you many years of reliable service and easy-to-use, push-button climate control.

Features

• Backlit display is easy to read

• Displays ambient (measured) temperature at all times

• One-touch access to setpoint temperature

• Energy-saving settings for maximum cost savings

• Separate programmable weekday/weekend schedules (5+2 day programming)

• Temporary and permanent override of schedule

• Early Start ensures right temperature at the right time

• Built-in compressor protection

RTH2310 Programmable Thermostat

Early Start

Early Start allows the thermostat to “learn” how long your furnace or air conditioner takes to reach the set temperature. Simply program the desired times and desired temperatures into the schedule. The thermostat will determine when to activate heating or cooling so that the desired temperature is attained at the desired time.

Example: If you set the Wake time to 6 a.m. and the temperature to 70 °F (21 °C), the heat will come on before the set time, so the temperature is 70 °F (21 °C) by the time you wake at 6 a.m.

Built-in compressor protection

Your thermostat has a feature that helps prevent damage to the compressor of your air conditioning. Because 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, flashes on the screen. When the safe wait time has elapsed, the icon stops flashing and the compressor turns on.

Operating Manual

System switch

(see page 8)

Fan Switch

(see page 9)

Screen

Lit for 12 seconds when you press the backlight button or any other button.

Programming buttons

(see pages 12 & 13)

Temperature buttons

Battery compartment (for 2 AA batteries)

Backlight button

Quick reference to controls

Quick reference to display screen

* flashes when the compressor protection is engaged (see page 3).

Temperature

The ambient (measured) temperature is normally displayed. To view the setpoint temperature, press

or once. The setpoint temperature will appear for 5 seconds.

Replace batteries

(see page 14)

Setpoint indicator

Appears when the setpoint temperature is displayed.

Time

Current period number

Appears when the thermostat is following the schedule (see temporary override on page 14 and permanent override on page 15)

Day

Heating is on

Cooling is on *

Replace filter

(see page 14)

RTH2310 Programmable Thermostat

Operating Manual

This thermostat is ready to go

Simply perform the three steps below and the thermostat is in operation:

1) Set the clock (see page 7)

2) Select whether to heat or cool (see page 8)

3) Select whether to keep the fan on continuously or only when needed (see page 9)

This thermostat is pre-set with energy-saving program settings (see page 11). If you do not wish to use these settings, you can:

• Modify the schedule and temperature setpoints (see page 12)

• Temporarily override the temperature setpoint (see page 14)

• Permanently override the temperature setpoint (see page 15)

Set the clock

Press to start time and day setting

Press to set the time or the day

Time and day display

Press to end time and day setting

69-2229S_A.fm

1) Press Clk. The hour will flash.

2) Press or to set the hour.

3) Press Clk. The minutes will flash.

4) Press or to set the minutes.

5) Press Clk. The day will flash.

6) Press or to set the day.

7) Press Exit.

NOTE: The time display flashes when the clock has lost its settings

RTH2310 Programmable Thermostat

Operating Manual

Use the System switch to place the system in one of the following modes:

• Heat: System is in Heating mode.

• Off: System is off.

• Cool: System is in Cooling mode.

CAUTION: EQUIPMENT DAMAGE HAZARD

Do not use Cooling mode when the outdoor temperature is below 50 °F (10 °C).

NOTE: When you place the thermostat in Cooling mode, you might need to wait up to five minutes before cooling can start. This is a safety feature for the compressor. will flash on the screen until cooling starts.

Select the system setting

Select the fan setting

Use the Fan switch to select the fan mode of operation.

RTH2310 Programmable Thermostat

Auto

NOTE: The Fan switch is not used if the fan is not connected to the thermostat.

The fan runs only when heating or cooling is activated. However, if you have a gas or fuel oil furnace, when heating is activated, the fan will start only when the air coming out of the vents is warm enough. The fan will keep on running after heating stops until the air is no longer warm enough.

The fan is always running. Use this setting for improved air circulation or for more efficient

air cleaning.

Operating Manual

Save money by using the schedule

The thermostat automatically adjust its temperature setpoint according to the programmed schedule. You can program up to four periods per day, with different settings for weekdays and weekends. For example, you can program all four periods for the weekdays but only two periods (Wake and Sleep) for the weekends.

Wake

Leave

Return

Sleep

To program a period, you need to set its start time and its two temperature settings (one when the thermostat is in cooling mode and another one when it is in heating mode).

Set the time you wake up and the temperature you want in the morning until you leave (usually a comfortable level).

Set the time you leave home and the temperature you want while you are away (usually an economical level).

Set the time you return home and the temperature you want during the evening until bedtime (usually a comfortable level).

Set the time you go to bed and the temperature you want overnight (usually an economical level).

RTH2310 Programmable Thermostat

Energy saving default schedule

This thermostat is pre-set with energy-saving program settings. These settings can reduce your energy bills by 33%. See the next page if you wish to modify the settings.

Period

Start time Heat Cool Start time Heat Cool

Wake 6:00 am 70 °F (21 °C) 78 °F (25.5 °C) 6:00 am 70 °F (21 °C) 78 °F (25.5 °C)

Leave 8:00 am 62 °F (16.5 °C) 85 °F (29.5 °C) - - - - - -

Return 6:00 pm 70 °F (21 °C) 78 °F (25.5 °C) - - - - - -

Sleep 10:00 pm 62 °F (16.5 °C) 82 °F (28 °C) 10:00 pm 62 °F (16.5 °C) 82 °F (28 °C)

Weekdays Weekends

Operating Manual

Temperature setpoint

Period start time

Period number

Program days

Appears when the heat setpoint is displayed

Appears when the cool setpoint is displayed

To modify the schedule

1) Press Pgm. The settings for period 1 for

Monday through Friday are displayed.

2) Press Day to switch between

(Monday through Friday) and and Sunday).

NOTE: Press Day for 3 seconds to select all 7 days.

3) To select another period, press P# until the

desired period number is displayed.

MO TU WE TH FR SA SU (Saturday

NOTE: To skip the displayed period, press Clr. For example, periods 2 and 3 have been skipped for Saturday and Sunday in the default schedule.

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