Honeywell RTH2510 Digital 7-day Thermostat Owner’s Manual
- June 8, 2024
- Honeywell
Table of Contents
- Identify System Type
- Customer Asistance
- Installation
- About Your New Thermostat
- Thermostat Controls
- Display Screen
- Set the Time and Day
- Program Schedule
- To Adjust Program Schedules (RTH2510)
- To Adjust Program Schedules (RTH2410)
- Program Schedule Override (Temporary)
- Program Schedule Override (Permanent)
- Built-In Compressor Protection
- Early Start
- Change Filter
- Battery Replacement
- Troubleshooting
- 1-Year Limited Warranty
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
RTH2510 Digital 7-day Thermostat
Owner’s Manual
Read and save these instructions.
For help please visit honeywellhome.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
- Heat pump with auxiliary/backup heat
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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.
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-oflife equipment will help prevent negative consequences for
the environment and human health.
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FCC statement at: https://customer.resideo.com/en-US/support/residential
/codes-and-standards/FCC15105/Pages/default.aspx
NOTICE: To
avoid possible compressor damage, do not run air conditioner if the outside
temperature drops below 50°F (10°C).
Customer Asistance
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.
Installation
Turn Off Power to Heating/Cooling System
Remove Old Thermostat
Remove old thermostat but leave wallplate with wires attached
If you have an
older thermostat with a sealed mercury tube, turn to page2 for proper disposal
instructions.
Label Wires with Tags
Label the wires using the supplied wire labels as you disconnect them
Separate Wallplate from New Thermostat
Remove wallplate from the new thermostat and mount onto wall.
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
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
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 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
Altrnate Wiring (Heat Pump)
If labels do not match letters on thermostat, see page 7
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 V and VR wires, stop now and
contact a qualified contractor for help.
If your old thermostat had separate O and B wires, 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 C or X wire. Do not use B wire if you already have
O wire. Wrap bare end of wire with electrical tape
Do not use L wire. Wrap bare end of wire with electrical tape
If your old thermostat had E and Aux wires (or alternate wires),
connect both wires to Aux terminal.
Install Batteries
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.)
Install Thermostat Onto Wallplate
Install thermostat onto the wallplate on the wall.
Turn Power Back On
Turn the power back on to the heating/cooling system.
If Your System Type is…
If your system type is:
- Single Stage Heat and Cool
- Heat Only or Cool Only
Congratulations, you’re done!
If your system type is :
- Heat 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
multistage conventional systems.
Advanced Installation
Enter System Setup
To enter system setup, press and hold both the ▲ and ▼ buttons until the
display changes (approximately 5 seconds).
Changing Settings
- Press the ▲or ▼button to change the setting.
- Press the ▲ and▼ buttons simultaneously for one second to advance to the next function.
- Press the RUN button to exit and save settings.
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 ▲ or ▲button 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 3 6 months
1 30 days 4 9 months
2 90 days 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
Thermostat Controls
Display Screen
Set the Time and Day
- Press the SET button, then press ▲or ▼to set the clock time.
- Press the SET button, then press ▲or ▼to select the day of the week.
- 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 energysaving 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.
To Adjust Program Schedules (RTH2510)
- Press SET until Set Schedule is displayed.
- Press ▲ or ▼to set your Wake time for the day displayed, then press SET.
- Press ▲ or ▼to set the temperature for this time period, then press SET.
- Set time and temperature for the next time period (Leave). Repeat steps 2 and 3 for each day’s time period.
- Press RUN to save & exit.
NOTE: Make sure the thermostat is set to the system you want to program (Heat or Cool).
To Adjust Program Schedules (RTH2410)
- Press SET until Set Schedule is displayed.
- Press ▲ or ▼to set your weekday Wake time (Mo-Fr), then press SET.
- Press ▲ or ▼to set the temperature for this time period, then press SET.
- Set time and temperature for the next time period (Leave). Repeat steps 2 and 3 for each weekday time period.
- 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).
Program Schedule Override (Temporary)
Press ▲ or ▼to 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).
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.
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.
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.
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 nonvolatile (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.
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.
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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.
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.
Resideo Technologies, Inc.
1985 Douglas Drive North, Golden Valley, MN 55422
1-800-468-1502
33-00110EF—05 M.S. Rev. 10-21 | Printed in United States
©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
.
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