Honeywell RTH221B1021-E1 User Manual

Programmable

RTH2300/RTH221

Thermostat

Series

Owner’s Manual

Read and save these instructions.

For help please visit yourhome.honeywell.com

Identify System Type

This thermostat is compatible with the following systems:

• Gas, oil or electric furnace

• Central air conditioner

• Hot water system with or without pump

• Millivolt system

• Central heating and cooling system

• Heat pump without auxiliary/backup heat

Do you need assistance? We are here to help.

Call 1-800-468-1502 for wiring assistance before returning the thermostat to the store.

This thermostat cannot be used on heat pumps with backup heat or on multistage systems.

ATTENTION: MERCURY RECYCLING NOTICE

NO MERCUR

MERCURIO

M32707

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

NO BOTE

NOTICE: To avoid possible compressor damage, do not run air conditioner if the outside temperature drops below 50°F (10°C).

mercury. Mercury and products containing mercury should not be discarded in household trash.

For more information on how and where to properly recycle a thermostat containing mercury in the United States, please refer to the Thermostat Recycling Corporation at www.thermostat-recycle.org.

For mercury thermostat recycling in Canada, please refer to Switch the Stat at www.switchthestat.ca

Customer assistance

For assistance with this product, please visit

http://yourhome.honeywell.com.

Or call Honeywell Customer Care toll-free at

1-800-468-1502.

To save time, please note your model number and date code before calling.

Pull at bottom to remove thermostat from wallplate.

Turn thermostat over to find model number and date code.

RTHXXXX

Table of contents

Installation

Installation ............................................3

Advanced Installation ...........................8

About your new thermostat

Controls and Home screen

quick reference ...................................10

Preset energy-saving schedules ........11

Programming and operation

Setting the clock .................................11

Adjusting program schedules .............12

Overriding schedules temporarily ......13

Overriding schedules permanently ....13

Compressor protection .......................14

Change filter .......................................14

Replace batteries ...............................15

Appendices

Troubleshooting ..................................16

Limited warranty .................................17

1 Turn Off Power to Heating/Cooling System

Circuit breaker

box

Heating/cooling system

power switch

M28100

2 Remove Old Thermostat

Remove old thermostat but leave wallplate with wires attached.

If you have an older thermostat with a

Do not remove wallplate yet

sealed mercury tube, turn to page 2 for proper disposal instructions.

Terminal designation

3 Label Wires with Tags

Label the wires using the supplied wire labels as you disconnect them.

Wire Labels

Terminal designation

4 Separate Wallplate from New Thermostat

Remove wallplate from the new thermostat and mount onto wall.

TO REMOVE WALLPLATE

PULL HERE

Wallplate

M32731

5 Mount Wallplate

M32714

Mount the new wallplate using the included screws and anchors.

Not

Used

Aux

Drill 3/16-in. holes for drywall Drill 3/32-in. holes for plaster

6 Connect Wires

Simply match wire labels. If labels do not match letters on the thermostat, check “Alternate Wiring” on

page 6 and connect to terminal as shown here (see notes, below).

WIRE HOLE

LABELED WIRES

Remove metal jumper if you have both R and

Rc wires.

INSERT WIRES

AND TIGHTEN

SCREWS

SCREW

Not

Used

Thermostat does not work on Heat Pumps with auxiliary/backup heat.

We are here to help. Call 1-800-468-1502 for wiring assistance.

Alternate Wiring

NOT

B O G Y

R Rc

USED

M32734

If wires will be connected to both R and Rc terminals, remove metal jumper.

Do not use C or X. Wrap bare end of wire with electrical tape.

If you have a heat pump without auxiliary/backup heat connect O or B, not both. If you do not have a heat pump, do not connect B. Wrap bare end of wire with electrical tape.

Place a jumper (piece of wire) between Y and W if you are using a heat pump without auxiliary/backup heat.

7 Install Batteries

Install two AAA alkaline batteries.

RTHXXXX

Back of thermostat

M32707

8 Set fan operation switch

M32716

M33784

Move the switch to the proper setting: Gas or Oil: For gas or oil heating systems,

leave the fan operation switch in this factory-set position (for systems that control the fan in a call for heat).

Electric or Heat Pump: Change the switch to this setting for heat pump or electric heat systems. (This setting is for systems that allow the thermostat to control the fan in a call for heat, if a fan wire is connected to the G terminal.)

9 Install Thermostat onto

Wallplate

Install thermostat onto the wallplate on the wall.

GAS OR OIL

ELECTRIC OR HEAT PUMP

GAS OR OIL

ELECTRIC OR HEAT PUMP

Not

Used

Aux

Set

Hold

Run

RTHXXXX

10 Turn Power Back On

Turn the power back on to the heating/cooling system.

Fan

Heat Off Cool

Heat Off Cool Auto On

Auto On

Fan

Circuit breaker box Heating/cooling system

power switch

11 If your system type is...

M33785

If your system type is:

q Single Stage Heat and Cool q Heat Only or Cool Only

Congratulations, you’re done!

If your system type is:

q Heat pump q High efficiency furnace q Hot water

Continue with Advanced Installation to match your thermostat to your system type.

q Electric furnace q Gas/oil steam q Gravity system

If you are not sure of your system type or if you have other questions, call us toll-free at 1-800-468-1502.

This thermostat works on 24 volt or 750 mV systems. It will NOT work on multistage conventional systems.

Advanced Installation

Enter System Setup

To enter system setup, press and hold both the s and t buttons until the display changes (approximately 5 seconds).

Set

Hold

Run

Changing Settings

1. Press the s or t button to change the setting.

2. Press the s and t buttons simultaneously for one second to advance to the next function.

3. Press the RUN button to exit and save settings.

Set

Hold

Run

Fan

Heat Off Cool

Heat Off Cool Auto On

Auto On

Fan

Function Setting

NOTE: If you do not press any button for 60 seconds while you are in the setup menu, the thermostat automatically saves any changes made and exits the menu.

Function

5 select your heating system and

14 select Fahrenheit or Celsius

15* select Compressor Protection

20 select clock display

21 (RTH2300 only)

40 (RTH2300 only)

* Compressor Protection: This feature forces the compressor to wait approximately 5 minutes before

restarting, to prevent equipment damage. During the wait time, the message “Cool On” or “Heat On” is displayed on screen.

Description Press the s or t button to Setting

optimize its operation

temperature display

settings

select Change Filter Timer

restore program schedule to default settings

5 Gas or oil furnace: Use this setting if you have a standard

gas or oil furnace that is less than 90% efﬁcient.

6 Electric furnace: Use this setting if you have any type of

electric heating system.

3 Heat pump, hot water or high-efficiency furnace:

Use this setting if you have a hot water system or a gas furnace of greater than 90% efﬁciency.

2 Gas/oil steam or gravity system: Use this setting if you

have a steam or gravity heat system.

0 Fahrenheit temperature display (°F) 1 Celsius temperature display (°C)

1 On 0 Off

0 12-hour display 1 24-hour display

0 Off 1 30 days 2 90 days 3 6 months 4 9 months 5 1 year

0 Off 1 On: Program schedule default settings are listed on

page11.

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.

• 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

Thermostat controls

M33612

Set: Press to set time/day/schedule.

Hold: Press to override programmed temperature control.

Run: Press to resume program schedule.

System Switch is used to control your heating or cooling system.

• Heat: Heating system control.

• Off: All systems off.

• Cool: Cooling system control.

Set

Hold

Run

Heat Off Cool Auto On

Display screen

Setpoint indicator Appears when the setpoint temperature is displayed.

Current day/time (see page 11)

Current program period Wake/Leave/Return/Sleep (see pages 11–13)

6:30

Wake

Temperature adjustment

Press the up or down buttons until you reach the desired temperature.

NOTE: Make sure

Fan

Heat Off Cool

Fan

Auto On

Fan Switch is used to control your fan. In “Auto” mode, the fan runs only when

the heating or cooling system is on. If set to “On,” the fan runs continuously.

Set

the SYSTEM switch is set to the system you want to control (Heat or Cool).

Low battery warning (see page 15)

Batt

Heat

M32701

System status Cool on: Cooling system is on. Heat on: Heating system is on.

When Cool On is flashing, compressor protection is engaged (see page 14).

Temperature 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.

M33787

M33788

Set the time and day

1. Press the SET button, then press

s or t to set the clock time.

2. Press the SET button, then press

s or t 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.

Set

Hold

Run

Set

Hold

Run

Set Time

6:30

Set Day

Program Schedule

You can program four time periods each day, with different settings for weekdays and weekends. We recommend the pre-set settings (shown in the table below), since they can reduce your heating/cooling expenses.

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).

NOTE: Leave and Return periods can be canceled on weekends.

Wake

(6:00 am)

Leave

(8:00 am)

Return

(6:00 pm)

Sleep

(10:00 pm)

Heat Cool

62 70 62

+ 25 hidden pages