Carrier 53DFS250-SL User Manual
Owner's Manual
PROGRAMMABLE DIGITAL THERMOSTAT
53DFS250-SL
Table of Contents
DISPLAY
QUICK START Set the clock and go
BASIC OPERATION
PROGRAMMING Occupied and
Unoccupied Periods
ADVANCED SETUP
ABOUT ADVANCED FEATURES
AND OPERATION
WARRANTY
IMPORTANT: Follow Installation Instructions
before proceeding,
A CAUTION: SET THERMOSTAT TO MODE "OFF"
PRIOR TO CHANGING SETTINGS IN SETUP OR
RESTORING FACTORY DEFAULTS.
2
2
3
3
4
5
7
7-Day Programmable
3 Occupied Modes, 1 Unoccupied Mode
Auto Changeover
Large, Easy To Read Display
Thermoglow™ Backlight
Remote Sensor Ready
Dry Contact Equipped
Energy Saving Smart Fan
Fan Purge, lAQ Feature
Meets Caiifornia Titie 24
Backlit LCD Display
- Warmer or + Button
■ Cooler or - Button
- Overrirte Button
■ Heat or Cool indicator
Red = Heat, Green = Cool
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Tab 3e 2t
Catalog No. 535-329 Printed in U.S.A. Form OM53-4 Pg 1 11-04 Replaces: New
Display Quick Start Set the Clock and Go
During Setup and Programming:
Pressing the Mode button selects different flashing items
(represented in black).
Pressing the Up and Down buttons will modify the flash
ing selection.
Press the Set Clock button
to exit Setup screens.
■O
IJ‘nn
» t .ULIPm
Press the Set Clock button
to exit Setup screens.
The thermostat is preprogrammed from the factory to op
erate equipment without the need for further program
ming. To optimize the installation of fhis thermosfat follow
the instructions in the Advanced Setup section.
NOTE: The thermostat is not preprogrammed from the
factory to operate heat pump systems. To control these
systems, follow the steps in the Advanced Setup section,
page 4.
B-
BB
Q]
m
Q]
Q]
SuMTuWThFSa ^unoccupied
AUTO
OFFON
- Locked
-Fan ill
Mode Indicators
Selects the operation mode of the equipment.
COOL — indicates the air conditioning
heat — indicates the heat mode.
AUTO — indicates the system will auto
OFF — indicates the entire system is
PROGRAM ON — indicates the stored
Clock with Day of the Week
Indicates the current time and day. This clock
is also used to program the timer periods.
See this page.
Room Temperature Display
Indicates the current room temperature.
Desired Set Temperature
Indicates desired room temperature(s).
See page 3.
Override Indication
Indicates the current program is currently be
ing overridden for up to 4 hours. See
pages 3 and 5.
nOn Setupjra
starti mi SJ
lied 123 flf fi
|2®5| ° COOL -
J1 HEAT-
00
mode.
matically changeover between
the heat and cool modes as the
temperature varies.
turned off.
program is enabled to
run. See page 3.
HB
HB
To adjust the
clock or Day use
buttons.
To adjust the
clock or Day use
buttons.
o
Occupied or Unoccupied Indication
ni
I 8 I Fan Operation Indication
[j] Locked Indication
Indicates the program number: Occupied 1,2,
3, or Unoccupied. See pages 3 and 4.
Setup Indication
Indicates the thermostat is in the program
ming mode. See page 4.
Fan III — indicates constant continuous
fan operation.
When Fan On Icon is not lit — indicates the
fan will only operate when necessary to heat
or to cool.
Locked appears after the right combination of
buttons are pressed, rendering the buttons
inoperative. See page 5.
To] Start/Stop Indication
Start or Stop appears when programming
timer functions. See page 3.
Page 2
Basic Operation
Programming Occupied and Unoccupied Periods
Select Mode
The HEAT setting indicates
the temperature the room has
to reach before the unit wiil
turn on to heat the room.
The COOL setting indicates
the temperature the room has
to reach before the unit wiil
turn on to cool the room.
AUTO will automatically
select heat or cool based on
room temperature demand.
Program On wilt activate the
stored timer operation.
(Occupied and Unoccupied
OFF indicates the system is
periods.)
turned off.
t 3 ■ fi rt
11 u !.
I 5 " ñ
I L U r:-
AUTO
Program<5n
unoccupied
H
COOL
HEAT
!S
Press the Program button fo enter
time period programming.
o
vSelect the maximum number
of occupied periods to be
used on any one day.
Typically 1.
{1,2 or 3)
Adjust the cooling
set point for occupied 1.
(35 to 99 F)
Adjust the heating
set point for occupied 1.
(35 to 99 F}
Adjust the cooling
set point for unoccupied
periods.
(35 to 99 F)
V
C
Zi
COOL
OFF
Select Desired Temperature
In any mode, adjusi the
13’' II n
w
COOL
desired Set Point Temperature
with
: ■■■'
Pressing the up/down buttons in Auto mode will adjust both the
heat and cool set point temperatures simultaneously.
Pressing the up/down buttons in Heat or Cool modes will adjust
only the heat or cool set point temperaTure.
Override Press
OVERRiDE
f* t i ÍÍ r\ i-loyin
i-.UiJFPm stop
i
K “ 1 n Program On
U -n llPm
ProgramOn
unoccupi^g
?S
f r<Tm
11 .UU Pm
^ o COOL
■ HEAT
I
Q COOL
cc
Z*Zl
Override
1?
During programmed, unoccupied
periods a press of the Override
button will force the thermostat
into Occupied 1 comfort settings,
temporarily.
With each successive push of the
Override button, the override tim
er will add 30 minutes, until the
maximum of 4 hours is reached.
HEAT
Then the next press will zero out
the override timer, returning to un
occupied if there are no further
button presses.
When in Override, the Override
icon and the Occupied f icon
appear on the display.
The time of day ciock alternates
with the time remaining in
override.
During Override, the set point
temperatures are adjustable, pro
vided the keypad is not locked.
Adjust the heating
set point for unoccupied
periods.
(35 to 99 F)
Select the day for
Occupied 1.
(M-Su)
Adjust the start time
for occupied 1.
Adjust the stop time
for occupied 1.
On
Select Occupied 1 to run
on this day (On), or not to
run this day (Off).
Off
1 ■ ri riAm
I. U U
C " n ñ
U.UUPm
ON
CO
Page 3
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