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This thermostat oontain$ a Lithium battery whioh may oontain Perohlorate material.
Perohlorate Material--$peoial handling may apply,
See www.dt$o.oa.gov/hazardouswaste/perohlorate
Read and save these instructions,
® U.S. Registered Trademark.
US Patent No. 7,114,554; 7,181,317; 7,225,054; 7,274,972; 7,636,604; 7,693,582
Copyright © 2011 Honeywell International Ino. All rights reserved.
53DFS250=HW Thermostat
About your newthermostat
This thermostat is ready to go! ................. 3
Quick reference to controls ....................... 4
Quick reference to status display ............. 5
Programming& Operation
Clock setting .............................................. 6
System setting ........................................... 7
Fan setting .................................................. 8
Programming Heating and
Cooling Schedule ....................................... 9
To adjust program schedules .................. 10
Hold Temperature Untit ............................ 11
Override .................................................... 13
Holiday ...................................................... 14
Key look .................................................... 15
Appendicies
Battery replacement ................................ 18
Advanced functions ................................. 19
In case of difficulty ................................... 23
CAUTION" EQUIPMENT
DAMAGE HAZARD, To prevent
possible compressor damage, do
not operate cooling system when
outdoor temperature is below 50°F
(10°C) unless a low ambient control
kit is installed.
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OperatingManual
Features
• Large, Clear Display with Backlighting--current temperature, set temperature
and time are easy-to-read and all are displayed on the main screen.
• Menu Driven Programming--Provides guidance through the scheduling process,
showing only necessary information and choices on each screen.
• Ability to Select Multiple Days--allows easy customizing for unique schedules.
• Real-Time Clock--keeps time during power failure; automatically updates for
daylight saving time.
• Precise Temperature Control (_+l°F)--reliable, consistent comfort.
• Multiple OVERRIDE options--can modify schedule for a specific period of time
(up to 365 days).
• Speedy same-schedule programming--no need to copy mulitple days.
• Programmable or non-programmable modes.
• Remote setback input for occupancy sensors or timeclocks.
• VersaSpeed TM fan ramping algorithm and fan reset algorithm
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53DFS250=HWThermostat
Your new thermostat is pre-programmed and ready to go. Just set the time and day.
Then cheek the settings below and ohange if needed:
1. Set clock ........................................................................................................ See page 6
2. Select fan setting ........................................................................................ See page 7
3. Select system setting ................................................................................. See page 8
4. Program schedules: Preset to energy-saving levels
while you're at work or asleep (assumes you
wake at 6 am, leave at 8 am, return at 6 pm
and go to bed at 10 pro) ....................................................................... See pages 10=13
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OperatingManual
DAYS
SELECTED --
GO BACK KEY --
GOES BACK TO THE
LAST SCHEDULE STEP
SCHEDULE HEAT OR COOL
PERIOD TEMPERATURES
NEXT STEP KEY
ADVANCES PERIOD,TIME,
HEAT AND COOL TEMPERATURES
/-- UP ARROW
_ CHANGES TIME
A/AND
f___-- TEMPERATURES
!2 _ bOW.ARROW
CHANGES TIME
AND
TEMPERATURES
_DONE KEY
EXITS AND SAVES
CHANGES MADE
TO SCHEDULE M31449
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OperatingManual
CCLJ
Adjust time, then press DONE
To set the current time display, press
MORE,then press CLOCK.Use the arrows
to set the eurrent time
Press DONEto save & exit
Note: The real-time clock should never require
adjustment since it automatically updates for
daylight savings time, and stores alt date/time
information.
Note: To change the current week day display,
see page 20.
M31451
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53DFS250=HWThermostat
Press SYSTEM& FAN
Press SYSTEMto select mode,
then pl ;ss DONE
Foltow steps at left to seteot system:
* Heat: Thermostat controls only the heating
system.
.Cool: Thermostat controls only the cooling
system.
* Auto: Thermostat automatically selects
heating or cooling depending on the indoor
temperature.
o Off: Heat and Cool are off.
.Em Heat (only for heat pumps with auxiliary
heat): Thermostat controls Emergency and
Auxiliary Heat. Compressor is looked out.
Note: The Auto and Em Heat system settings
may not appear, depending on how your
thermostat was installed.
U
Note: When set to Off, the fan may operate
depending on the fan setting.
M31452
769-2566EFS--05
OperatingManual
Press SYSTEM& FAN
Press FANto select mode, then press DONE
CCCD M31453
Press SYSTEM & FAN, then FAN to select fan
operation, then press DONE.
•On: Fan is always on.
•Auto= Fan runs only when the heating
or cooling system is on.
•LO: low fan speed
• MED: medium fan speed
•Hi: high fan speed
Display shows the fan blade symbol #t
next to FAN when the thermostat has the
fan turned on.
Occupied Mode-Fan control is On. Move
fan to Auto to turn off the fan.
Unoccupied Mode-Fan control is the
same as with the Auto setting, this is true
even when the display indicates "On".
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53DFS250-HWThermostat
IMPORTANT
Keepinmindthattheupanddownkeyschangetheflashingnumberor
word.Whenmultipleitemsareflashing,changesaffectonlyoneofthe
items.
The thermostat can control up to four different schedule periods per day:
• Occupiedl-Work arrival time. Period to keep space at a comfortable
temperature.
• Unoccl-Work exit time. Period to keep space at an energy-saving temperature.
• Occupied2-Second occupied period.
• Unocc2-Second unoccupied period.
NOTES:
* Available schedule times are at 15-minute intervals.
* With default settings, all four periods can be programmed. This can be
changed to allow only Occupied1 and Unoool programs. To use only
Occupied1 and Unoocl, see Step 8 in the Advanced Settings section.
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OperatingManual
CCC3
C22J
C22 C2C
CCZ3 CCC3
8.
Adjust
Press MORE,then SCHEDULE,then EDIT.
2. Press SELECTDAY.You can select
multiple days to program with the same
settings.
3. Press NEXTtwice, then press A or Y to
set Occupied1 time for selected day(s).
4. Press NEXT,then A or y to set Heat
temperature for this time period.
5. Press NEXT,then A or V to set Cool
temperature for this time period.
6. Repeat steps 3-5 to program other
time periods (OCCUP|ED2, UNOCCI,
UNOCC2), then press DONE.
7. Repeat steps 1-6 to program any
remaining days. (Press A or y until
the desired day is flashing, then press
SELECTDAY.)
Press DONEto save & exit.
temperature and time
M31454
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53DFS250-HW Thermostat
Adjust temperature and time
CCZD CCZD
M31455
Note: If HEAT and COOL both flash, your
temporary setting will automatically
adjust the cooling and heating set-
tings to maintain separation between
the cool and heat settings.
1. Press A or Y to immediately adjust
the temperature. This will temporarily
override the temperature setting for the
current time period.
2. Press NEXT.
3. Press A or Y to adjust time
4. Press DONE to save setting.
5. Thenewtemperaturewill be maintained only
untit the time you set.
Note: The length of time to be able to override
beyond the current time is limited from 1-12
hours.
6. To cancel the temporarily Hold Untit
setting at any time, press CANCEL.
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OperatingManual
Changes temperature setting until the
Adjust temperature and time next period takes effect. For use during
Unoccupied periods.
M31456
Note: The length of time to be able to
override is based on how the ther-
mostat is setup during installation.
1. Press OVERRIDE, the Hold Until time
will automatically adjust the override
setting
2. Press A or Y to adjust the temperature.
3. Press DONE to save setting.
Note: During an override, the word "Override"
flashes.
4. To cancel the override, press CANCEL.
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53DFS250-HWThermostat
Adjust days Changes temperature setting for a desig-
nated number of days.
1, Press MORE.
2. Press HOLIDAY. The temperature on the
screen flashes.
3, Use the Up and Down keys to change
the desired temperature for the
duration of the holiday.
4, Press NEXT. The screen shows "Hold
_ _ Until 1 Days". The number flashes.
M31457 5. Use the Up and Down keys to change
the number of days desired for the
thermostat to override the schedule.
6. Press DONE.
7. During a holiday, the word "Holiday"
flashes.
8. To cancel the Holiday Override early,
press CANCEL.
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OperatingManual
Looked When the thermostat displays "Looked", key con-
trol is either fully or partially looked.
CCC3 CCC CCC3
Fully Locked Keys
in this mode, all keys are locked. The screen con-
tinuously displays "Locked".
®
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Partially Locked Screen
Pressing a locked key prompts the screen to indi=
care "Locked."
M31458
Holiday and Override options are available in all partial lockout levels.
Selecting HOLIDAY sets the temperature to the Unoccupied setting. The
temperature setting cannot be changed. The number of days to hold the holiday
can be changed. After this time, the next Occupied period switches back to the
program settings.
Selecting OVERRIDE sets the temperature to the Occupied setting. The
temperature setting cannot be changed. The period of time to hold the override
can be changed. After this time, the next Unoccupied period switches back to
the program settings.
To cancel the temperature override and follow the programmed schedule, press
CANCEL.
14
53DFS250-HWThermostat
PARTIAL LOCKOUT 1•The temporary temperature change
This mode locks out schedule and sys-
tem changes.
• User can change the temperature
setpoint and fan settings, but
cannot change schedule or system
settings.
• The temporary changes last until
next scheduled period. The screen
displays that time.
PARTIAL LOCKOUT 2
This mode locks out schedule, system,
and fan changes.
• User can change the temperature
setpoint, but cannot change
schedule, system, or fan settings.
lasts until next scheduled period.
The screen displays that time.
PARTIAL LOCKOUT 3
This mode locks out schedule, system,
fan, and temperature setpoint settings:
• Users cannot make changes to the
temperature setpoint or any schedule,
system, or fan settings.
•The only features available are
HOLIDAYand OVERRIDE.
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OperatingManual
Batteries are optional (to provide
backup power) if your thermostat
was wired to run on AC power
when installed.
Install fresh batteries immediately
when the L0 BATT warning begins
flashing. The warning flashes
about 30 days before batteries are
depleted.
Even if the warning does not
appear, you should replace batter-
ies once a year, or before leaving
home for more than a month.
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M31459
16
53DFS250-HW Thermostat
Press A or y to change setting.
Function
The thermostat has many settings that
can be adjusted to match specific needs:
1. Press SYSTEM & FAN.
2. Press and hold FAN for approximately
five seconds, until the screen changes.
3. Press NEXT to change the function
and use the A and T to change the
settings.
Press DONE to save and exit.
Note" See next pages for available functions to
change.
___ _ Press DONE to save & exit.
Press NEXT to advance to next function
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OperatingManual
Function Press A/T to change the first two digits of the year:
0120
Options: 20 = Year 20xx
21 = Year 21xx
Function Press A/T to change the last two digits of the year:
0130
Options: 01 =99 (i.e., 2011 =2099)
Function Press A/y to change the current month:
0140
Options: 1 =12 (i.e., January = December)
Function Press A/V to change the current date:
0150
Options: 1 - 31
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