Honeywell RTH2510 Series User manual

RTH2510/RTH2410
Programmable Thermostat
Operating
Manual
69-2420ES-01
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This manual covers the RTH2510 and RTH2410 models.
Read and save these instructions.
CAUTION: EQUIPMENT DAMAGE HAZARD
To prevent possible compressor damage, do not use Cooling mode when the
outdoor temperature is below 50 °F (10 °C).
Need Help?
For assistance with this product please visit http://yourhome.honeywell.com
or call Honeywell Customer Care toll-free at 1-800-468-1502.
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Programmable Thermostat RTH2510/RTH2410
Overview
Thermostat features ..............................2
Quick start .............................................3
Quick reference to controls ...................4
Quick reference to display.....................5
Programming & Operation
Setting the clock....................................6
System switch (Heat/Cool)....................7
Fan switch (Auto/On).............................8
Using the schedule.......................... 9-12
Temporary schedule override..............13
Permanent schedule override .............14
Early start ............................................15
Compressor protection........................15
Appendices
Battery replacement ........................... 16
In case of difficulty .............................. 17
Customer assistance .......................... 18
One-year limited warranty .................. 19
Table of contents
Your new thermostat is pre-programmed
and ready to go!
See page 3 for quick start.
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Your new 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
• Separate programmable daily schedules (7-day programming)
• Temporary and permanent override of schedule
• Early start ensures the right temperature at the right time
• Built-in compressor protection
About your new thermostat
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3 69-2420ES—01
Simply perform the three steps below and the thermostat is in operation:
Set the clock ................................................................................................ See page 6
Select whether to heat or cool...................................................................... See page 7
Select whether to run the fan continuously or only when needed................ See page 8
Your thermostat is pre-programmed with energy saving settings. If you do not wish to use
these settings, you can:
Modify the schedule (RTH2510) .................................................................See page 11
Modify the schedule (RTH2410) ................................................................ See page 12
Temporarily override the schedule ............................................................. See page 13
Permanently override the schedule............................................................ See page 14
This thermostat is ready to go
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Operating Manual
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Quick reference to controls
System switch (see page 7)
•Cool: System is in Cooling mode.
•Off: System is off.
•Heat: System is in Heating mode.
Fan switch (see page 8)
•On: Fan runs continuously.
•Auto: Fan runs only when
heating or cooling is activated.
Up/Down buttons
Press to adjust temperature.
Screen
Lit for 12 seconds when
you press any button.
Press to set clock, day or schedule
(see pages 6 & 11/12).
Press to override schedule and
hold temperature (see page 14).
Press to run (follow) schedule
(see page 9).
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RTH2510/RTH2410 Programmable Thermostat
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Quick reference to display
* When Heat On or Cool On is flashing, compressor protection is engaged (see page 15).
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 is activated. *
• Heat On: Heating is activated. *
• Aux On: Auxiliary heat is activated.
Low-battery warning
(see page 16)
Setpoint indicator
Appears when the setpoint
temperature is displayed.
Clock
Schedule period
Permanent schedule override
(see page 14)
Temporary schedule override
(see page 13)
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Press the Set button. Set Time will appear on the screen and the
time display will flash.
Press the Up or Down button to set the time.
Press the Set button again. Set Day will flash on the screen.
Press the Up or Down button to select the day of the week.
Press the Run button to save the changes & exit. (The changes
are also saved if you do not press any button for 60 seconds.)
NOTE: The clock has lost its settings when the time display flashes. If the thermostat is
following the schedule, it will use the temperature settings programmed for the Wake
period for Monday until you readjust the clock.
Set the clock
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RTH2510/RTH2410 Programmable Thermostat
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System switch (Heat/Cool)
Use the System switch to place the system in
one of the following modes:
•Cool: System is in Cooling mode.
•Off: System is off.
•Heat: System is in Heating mode.
CAUTION: EQUIPMENT DAMAGE HAZARD.
Do not use Cooling mode when the outdoor temperature is below 50°F (10°C).
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Fan switch (Auto/On)
Use the Fan switch to select the fan operation.
•Auto: The fan runs only when heating or
cooling is activated (commonly used setting).
•On: The fan runs continuously.
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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.
Save money by setting program schedules
WAKE
6:00 am
70 º
Set to the time you awaken and the temperature you want
during the morning, until you leave for the day.
LEAVE
8:00 am
62 º
Set to the time you leave home and the temperature you
want while you are away (usually an energy-saving level).
RETURN
6:00 pm
70 º
Set to the time you return home and the temperature you
want during the evening, until bedtime.
SLEEP
10:00 pm
62 º
Set to the time you go to bed and the temperature you want
overnight (usually an energy-saving level).
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The thermostat is preset with energy saving program settings. See the next two pages if
you wish to modify the settings.
Energy saving settings
Period Start time Heat Cool
Wake 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 (27.5°C)
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RTH2510/RTH2410 Programmable Thermostat
11 69-2420ES—01
Press the Set button 3 times until Set Schedule appears. The Wake period is
displayed.
NOTE: To set another period, press the Set button as many times as needed until the
desired period and the desired day are displayed and its time or temperature is flashing.
When the time flashes, press the Up or Down button to set the time.
Press the Set button.
To set the temperature for cooling mode, first place the System switch in Cool. To
set the temperature for heating mode, first place the System switch in Heat.
When the temperature flashes, press the Up or Down button to set the temperature.
Press the Set button.
Repeat steps 2 through 6 to set each of the remaining periods.
Once all changes are made, press the Run button to save them and return to
normal display. (The changes will automatically be saved if you do not press any
button for 60 seconds.)
Modifying the schedule (RTH2510)
To skip a period
(except Wake),
press the Hold
button for 4 seconds
while that period is
displayed.
Wake period for
Monday is set to 6
a.m. and 70°F
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Press the Set button 3 times until Set Schedule appears. The Wake period is
displayed.
NOTE: To set another period, press the Set button as many times as needed until the
desired period and the desired day are displayed and its time or temperature is flashing.
When the time flashes, press the Up or Down button to set the time.
Press the Set button.
To set the temperature for cooling mode, first place the System switch in Cool. To
set the temperature for heating mode, first place the System switch in Heat.
When the temperature flashes, press the Up or Down button to set the temperature.
Press the Set button.
Repeat steps 2 through 6 to set each of the remaining periods.
Once all changes are made, press the Run button to save them and return to
normal display. (The changes will automatically be saved if you do not press any
button for 60 seconds.)
Modifying the schedule (RTH2410)
To skip a period
(except Wake),
press the Hold
button for 4 seconds
while that period is
displayed.
Wake period for the
weekdays is set to
6 a.m. and 70°F
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To temporarily ignore the schedule, press the Up or
Down button until the desired temperature is displayed.
The word Temporary will appear on the screen and the
period display will flash to indicate that the current period
has been overridden. The new temperature will be used
until the next period begins.
NOTE: Pressing the Up or Down button once will display the setpoint temperature. To
change the setpoint temperature, press either button more than once.
Press the Run button if you wish to cancel the temporary setting before the beginning of
the next period.
Temporary override of schedule
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To permanently ignore the schedule, press the Up or
Down button until the desired temperature is displayed.
Then, press the Hold button to maintain the new
temperature indefinitely. The word Hold will appear on
the screen.
Press the Run button if you wish to cancel the override
and resume the schedule. The word Hold will disappear
and the thermostat will be set to the temperature
programmed for the current period.
Permanent override of schedule
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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.
Your thermostat has a feature that helps prevent damage to the compressor of your air
conditioning or heat pump system. 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, the message Cool On or Heat On flashes on the
screen. When the safe wait time has elapsed, the message stops flashing and the
compressor turns on.
Early start
Built-in compressor protection
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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.
Battery replacement
Set the System switch to Off before removing the batteries. Otherwise, the
heating/cooling system could remain activated even when batteries are
removed.
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RTH2510/RTH2410 Programmable Thermostat
17 69-2420ES—01
In case of difficulty
Screen is blank. • Ensure two fresh AAA alkaline batteries are correctly installed.
Temperature settings cannot be
changed.
• The System switch is off.
• You are setting the temperature outside its allowable range:
• Heat: 40°F to 90°F (4.5°C to 32°C)
• Cool: 50°F to 99°F (10°C to 37°C)
Cool On or Heat On is flashing. • The compressor protection delay is underway. Wait for the delay
to end (maximum of 5 minutes).
HI appears on the screen. • The ambient (measured) temperature is above 122°F (50°C).
LO appears on the screen. • The ambient (measured) temperature is below 32°F (0°C).
E1 appears on the screen. • The temperature sensor circuit is opened. Replace the thermostat.
E2 appears on the screen. • The temperature sensor circuit is shorted. Replace the thermostat.
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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.
To save time, before calling, proceed as follows:
1) Loosen the locking screw at the bottom of the thermostat. Note that
the screw is captive and cannot be removed from the wallplate.
2) Separate the thermostat from the wallplate as per figure on the right.
3) Note your model number and date code on the thermostat’s
wallplate.
Customer assistance
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