Honeywell Home RTH2510 User manual

Read and save these
instructions.
For help please visit
honeywellhome.com
RTH2510/
RTH2410 Series
Programmable
Thermostat
Owner’s Manual
Heat Off Cool Auto On
Fan
Heat Off Cool
Auto On
Fan
Set
Hold
Run
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
• Heat pump with auxiliary/backup heat

2
RTHXXXX
M32707
Customer Assistance
For assistance with this product, please visit
honeywellhome.com.
Or call Resideo 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.
NOTICE: To avoid possible compressor damage, do not run air
conditioner if the outside temperature drops below 50°F (10°C).
CAUTION: MERCURY NOTICE
If this product is replacing a control that
contains mercury in a sealed tube, do not place
the old control in the trash. Contact your local
waste management authority for instructions
regarding recycling and proper disposal.
NO MERCUR
Y
NE PAS JETER
LE MERCURE
Hg
CAUTION: ELECTRONIC WASTE NOTICE
The product should not be disposed of with
other household waste. Check for the nearest
authorized collection centers or authorized
recyclers. The correct disposal of end-of-
life equipment will help prevent negative
consequences for the environment and human
health.
FCC statement at: https://customer.resideo.com/enUS/support/residential/
codes-and-standards/FCC15105/Pages/default.aspx

3
Installation
Installation.......................................................3
Advanced Installation ................................9
About Your New Thermostat
Controls and Home Screen
Quick Reference.........................................11
Preset EnergySaving Schedules......12
Programming and Operation
Setting the Clock .......................................12
Adjusting Program Schedules............13
Overriding Schedule Temporarily...... 14
Overriding Schedule Permanently..... 14
Compressor Protection .......................... 15
Early Start......................................................15
Change Filter............................................... 16
Replace Batteries ......................................16
Appendices
Troubleshooting.........................................17
Limited Warranty.......................................18
Table of Contents
1 Turn Off Power to Heating/Cooling System
or
M31535
Circuit breaker
box
Heating/cooling system
power switch

4
Do not remove wallplate yet
3 Label Wires with Tags
Label the wires using the supplied wire labels as you disconnect them.
Wire Labels
C
C
MCR33823
Terminal
designation
If you have an older thermostat with
a sealed mercury tube, turn to page
2 for proper disposal instructions.
Terminal designation
C
C
MCR31537
2 Remove Old Thermostat
Remove old thermostat but leave wallplate with wires attached.
4 Separate Wallplate from New Thermostat
Remove wallplate from the new thermostat and mount onto wall.
M32731
TO REMOVE WALLPLATE
PULL HERE
Wallplate
M28100

5
5 Mount Wallplate
Mount the new wallplate using the included screws and anchors.
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
(Conventional Systems)” on page 6 and connect to terminal as shown (see
notes, below).
Maximum load: 1 A @ 24 Vac, 50/60HZ per output.
We are here to help. Call 18004681502 for wiring assistance.
W/
Aux
Not
Used
M32714
Remove metal
jumper if you
have both Rand
Rc wires.
G
R
W
Y
W/
AUX
Not
Used
SCREW
INSERT WIRES
AND TIGHTEN
SCREWS
WIRE
HOLE
LABELED
WIRES
M38703

6
Alternate Wiring (Conventional Systems)
If labels do not match letters on the thermostat, check the chart below and
connect to terminal as shown here (see notes, below).
If wires will be connected to both Rand Rc terminals, remove metal
jumper.
Do not use Cor X. Wrap bare end of wire with electrical tape.
If you have a heat pump without auxiliary/backup heat connect Oor B,
not both.
B O G Y
W/
AUX
NOT
USED
R Rc
M32726
44
W/
AUX
Not
Used
M38704
O
Aux
GY
R
Alternate Wiring (Heat Pump)
If labels do not match letters on thermostat, see page 7.

7
7 Install Batteries
Install two AAA alkaline batteries.
Back of thermostat
RTHXXXX
M32707
Alternate wiring (for heat pumps with auxiliary or backup heat only)
If labels do not match letters on the thermostat, check the chart below and
connect to terminal as shown here (see notes, below).
Leave metal jumper in place, connecting R& Rc terminals.
If your old thermostat had both Vand VR wires, stop now and contact a
qualified contractor for help.
If your old thermostat had separate Oand Bwires, wrap the B wire in
electrical tape and do not connect.
If your old thermostat had Y1, W1 and W2 wires, stop now and contact a
qualified contractor for help.
Do not use Cor Xwire. Do not use Bwire if you already have Owire. Wrap
bare end of wire with electrical tape.
Do not use Lwire. Wrap bare end of wire with electrical tape.
If your old thermostat had Eand Aux wires (or alternate wires), connect
both wires to Aux terminal.
5
6
7
M32728
2
7
4
AUX
W
W1
W2
F
BOG
H
C
RC
V
VR
B
X
R
M
Y1
Y
E
7
X
X2
L
F
6532
1
B O G Y
W/
AUX
NOT
USED
R Rc

8
8 Set Fan Operation Switch
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.
RTHXXXX
M32716
GAS OR OIL
ELECTRIC OR HEAT PUMP
GAS OR OIL
ELECTRIC OR HEAT PUMP
10 Turn Power Back On
Turn the power back on to
the heating/cooling system.
M31544
or
Circuit breaker box Heating/cooling system
power switch
W/
Aux
Not
Used
M33592
Heat Off Cool Auto On
Fan
Heat Off Cool
Auto On
Fan
Heat Off Cool Auto On
Fan
Heat Off Cool
Auto On
Fan
Set
Hold
Run

9
11 If Your System Type is...
If your system type is:
qSingle Stage Heat and Cool
qHeat Only or Cool Only
Congratulations, you’re done!
If your system type is:
qHeat Pump* with Backup Heat
Continue with Advanced Installation to match your thermostat to your system
type.
*Heat Pump—an air conditioner that provides cooling in the summer, and also
runs in reverse in the winter to provide heating.
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 multi-
stage conventional systems.
Advanced Installation
Enter System Setup
To enter system setup, press and hold both
the sand tbuttons until the display
changes (approximately 5 seconds).
Changing Settings
1. Press the sor tbutton to change the
setting.
2. Press the sand tbuttons
simultaneously for one second to
advance to the next function.
3. Press the RUN button to exit and save
settings. Function
Setting
M33593
Heat Off Cool Auto On
Fan
Heat Off Cool
Auto On
Fan
Set
Hold
Run
10
M33594
Set
Hold
Run

10
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
Description
Press the sor tbutton to Setting
1 select system type 0 Heating & cooling: Gas, oil or electric heating with
central air conditioning or heat pump without auxiliary/
back-up heat.
1 Heat pump with auxiliary/backup heat: Outside
compressor provides both heating and cooling.
5 select your heating system
and optimize its operation
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.
13 select Early Start 1 On
0 Off
14 select Fahrenheit or Celsius
temperature display
0 Fahrenheit temperature display (°F)
1 Celsius temperature display (°C)
15* select Compressor
Protection settings
1 On
0 Off
20 select clock display 0 12-hour display
1 24-hour display
21 select Change Filter Timer 0 Off
1 30 days
2 90 days
3 6 months
4 9 months
5 1 year
40 restore program schedule to
default settings
0 Off
1 On: Program schedule default settings are listed on
page 12.
* 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.
About Your New Thermostat
Your new Resideo thermostat has been designed to give you many years of
reliable service and easy-to-use, push-button climate control.
• Backlit display is easy to read
• Displays ambient (measured) temperature at all times
• One-touch access to setpoint temperature
• Preset program settings
• Temporary and permanent override of schedule
• Early start ensures the right temperature at the right time
• Built-in compressor protection

11
M33612
Heat Off Cool Auto On
Fan
Heat Off Cool
Auto On
Fan
Set
Hold
Run
Thermostat Controls
Set: Press to
set time/day/
schedule.
Hold: Press
to override
programmed
temperature
control.
Run: Press to
resume program
schedule.
Temperature
adjustment
Press the up or
down buttons
until you reach
the desired
temperature.
NOTE: Make sure
the SYSTEM switch
is set to the system
you want to control
(Heat or Cool).
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.
System Switch is used to control
your heating or cooling system.
• Heat: Heating system control.
• Off: All systems off.
• Cool: Cooling system control.
Display Screen
M32701
We
Lo
Batt
Wake
Set
am
Heat
75
On
6:30
Low battery warning
(see page 16)
Setpoint indicator
Appears when the setpoint
temperature is displayed.
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.
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 15).
Current day/time
(see page 12)
Current program period
Wake/Leave/Return/Sleep
(see pages 1214)

12
Set the Time and Day
1. Press the SET button, then press
sor tto set the clock time.
2. Press the SET button, then press
sor tto 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.
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.
Heat Cool
Wake
(6:00 am) 70 °78 °
Leave
(8:00 am) 62 °85 °
Return
(6:00 pm) 70 °78 °
Sleep
(10:00 pm) 62 °82 °
Set Time
am
6:30
M33598
Set
Hold
Run
SetDay
We
M33599
Set
Hold
Run

13
To Adjust Program Schedules (RTH2510)
To Adjust Program Schedules (RTH2410)
1. Press SET until Set Schedule is
displayed.
2. Press sor tto set your weekday
Wake time (MoFr), then press
SET.
3. Press sor tto 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 s or t to set your Wake
time for the day displayed, then
press SET.
3. Press s or t 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 day’s 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).
Mo
Wake
Set Schedule
Set
am
75
6:30
M33600
Set
Hold
Run
Mo Tu We Th Fr
Wake
Set Schedule
Set
am
75
6:30
M33601
Set
Hold
Run

14
Program Schedule Override (Temporary)
Press sor tto immediately adjust
the temperature. This will temporarily
override the temperature setting for
the current time period.
“Temporary” will appear on the display
and the current program period will
flash.
The new temperature will be
maintained only until the next
programmed time period begins (see
page 12).
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).
Program Schedule Override (Permanent)
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).
Temporary
Set
am
70
6:30
M33602
Set
Hold
Run
Set
am
75
6:30
M33603
Set
Hold
Run
Hold
Set
am
70
6:30
M33604
Set
Hold
Run
Set
am
75
6:30
M33603
Set
Hold
Run

15
Program Schedule Override (Permanent)
BuiltIn Compressor Protection
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.
We
Wake
am
Cool
75
On
6:30
M32711
Early Start
This feature allows the heating or
cooling to turn on before the program
start time, so the temperature is
reached at the time you set. For
example: Set the Wake time to 6 am,
and the temperature to 70°. The
heat will come on before 6 am, so
the temperature is 70° by the time
you wake at 6. The next time period is
displayed when the system is activated
before a scheduled time period.
We
Wake
am
Cool
75
On
6:30
M32712

16
Battery Replacement
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.
Pull at bottom to remove
thermostat from wallplate.
Turn thermostat
over, insert fresh AAA
alkaline batteries, then
reinstall thermostat.
Set the System switch to Off before removing
the batteries. Otherwise, the heating/cooling
system could remain activated even when
batteries are removed.
RTHXXXX
M32707
Change Filter
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.
Set
am
75
6:30
M33632
Set
Hold
Run
Change Filter – Press & Hold Run to Reset
W/
Aux
Not
Used
M33592
Heat Off Cool Auto On
Fan
Heat Off Cool
Auto On
Fan
Heat Off Cool Auto On
Fan
Heat Off Cool
Auto On
Fan
Set
Hold
Run

17
Troubleshooting
If you have difficulty with your thermostat, please try the following suggestions.
Most problems can be corrected quickly and easily.
Display is
blank
• Make sure fresh AAA alkaline batteries are correctly
installed.
Heating
or cooling
system does
not respond
• 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.
Temperature
settings do
not change
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).
“Cool On” or
“Heat On” is
flashing
• Compressor protection feature is engaged. Wait 5 minutes
for the system to restart safely, without damage to the
compressor.
“Heat On” is
not displayed
• Set the System switch to Heat, and set the temperature
level above the current room temperature.
“Cool On” is
not displayed
• Set the System switch to Cool, and set the temperature
level below the current room temperature.
For assistance with this product, please visit honeywellhome.com or call
Resideo Customer Care toll-free at 18004681502.

33-00110ES-05
©2020 Resideo Technologies, Inc. All rights reserved.
The Honeywell Home trademark is used under license from Honeywell
International, Inc.
This product is manufactured by Resideo Technologies, Inc. and its affiliates.
Todos los derechos reservados.
La marca comercial Honeywell Home se utiliza bajo licencia de Honeywell
International, Inc.
Este producto es fabricado por Resideo Technologies, Inc. y sus afiliados.
Resideo Technologies, Inc.
1985 Douglas Drive North, Golden Valley, MN 55422
1-800-468-1502
33-00110ES—05 M.S. Rev. 10-21 | Printed in United States
www.resideo.com
1Year Limited Warranty
Resideo warrants this product, excluding battery, to be free from defects in
workmanship or materials, under normal use and service, for a period of one (1) year
from the date of first purchase by the original purchaser. If at any time during the
warranty period the product is determined to be defective due to workmanship or
materials, Resideo shall repair or replace it (at Resideo’s option).
If the product is defective,
(i) return it, with a bill of sale or other dated proof of purchase, to the place from which
you purchased it; or
(ii) call Resideo Customer Care at 18004681502. Customer Care will make the
determination whether the product should be returned to the following address:
Resideo Return Goods, 1985 Douglas Dr. N., Golden Valley, MN 55422, or whether a
replacement product can be sent to you.
This warranty does not cover removal or reinstallation costs. This warranty shall not
apply if it is shown by Resideo that the defect was caused by damage which occurred
while the product was in the possession of a consumer.
Resideo’s sole responsibility shall be to repair or replace the product within the terms
stated above. RESIDEO SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE OF ANY
KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING,
DIRECTLY OR INDIRECTLY, FROM ANY BREACH OF ANY WARRANTY, EXPRESS OR
IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT.
Some states do not allow the exclusion or limitation of incidental or consequential
damages, so this limitation may not apply to you.
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY RESIDEO MAKES ON THIS
PRODUCT. THE DURATION OF ANY IMPLIED WARRANTIES, INCLUDING THE
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS
HEREBY LIMITED TO THE ONE YEAR DURATION OF THIS WARRANTY. Some states do
not allow limitations on how long an implied warranty lasts, so the above limitation may
not apply to you.
This warranty gives you specific legal rights, and you may have other rights which vary
from state to state. If you have any questions concerning this warranty, please write
Resideo Customer Care, 1985 Douglas Dr, Golden Valley, MN 55422 or call
18004681502.

Heat Off Cool Auto On
Fan
Heat Off Cool
Auto On
Fan
Set
Hold
Run
RTH2510/
RTH2410 Serie
Manual del
propietario
Termostato
Programable
Lea y guarde estas
instrucciones.
Para obtener ayuda, visite
honeywellhome.com
Identifique el tipo de sistema
Este termostato es compatible con los siguientes sistemas:
• Calefactor a gas, aceite o eléctrico
• Aire acondicionado central
• Sistema a agua caliente con o sin bomba
• Sistema de milivoltios
• Calefacción y aire acondicionado centrales
• Bomba de calor sin calefacción auxiliar
• Bomba de calor con calefacción auxiliar

2
AVISO: Para evitar posibles daños al compresor, no utilice el aire
acondicionado si la temperatura externa es inferior a 50 °F (10 °C).
NO MERCUR
Y
NO BOTE
MERCURIO
Hg
RTHXXXX
M32707
Asistencia al cliente
Para obtener asistencia relacionada con este
producto, visite honeywellhome.com.
O comuníquese con el número gratuito del servicio
de atención al cliente, llamando al 18004681502.
Para ahorrar tiempo, anote el número de modelo y el
código de fecha antes de llamar.
Gire el termostato para ver el número de
modelo y el código de fecha.
PRECAUCIÓN: AVISO SOBRE EL MERCURIO
Si este producto está reemplazando a un equipo
de control existente que contiene mercurio en
un tubo sellado, no coloque dicho equipo en la
basura. Contacte al organismo encargado del
manejo y disposición de desechos de su localidad
para obtener instrucciones sobre cómo reciclar y
desechar adecuadamente.
MISE EN GARDE : AVIS SUR LES DÉCHETS
ÉLECTRONIQUES
Le produit ne devrait pas être jeté aux ordures
ménagères. Adressez-vous au centre de collecte
ou de récupération autorisé le plus près.
L’élimination appropriée de l’équipement en fin de
vie aidera à prévenir les conséquences négatives
potentielles sur l’environnement et la santé.
Declaración de la Comisión Federal de Comunicaciones (Federal
Communications Commission, FCC) en: https://customer.resideo.com/
enUS/support/residential/codes-and -standards/FCC15105/Pages/default.
aspx