PROGRAMMABLE DIGITAL THERMOSTAT
Am
:
Su
AUTO
• 7-Day Programmable
• 3 Occupied periods and 1 Unoccupied period
• Auto Changeover
• Large, Easy To Read Display
• Thermoglow™ Backlight
• Remote Sensor Ready
• Dry Contact Equipped
• Energy Saving Smart Fan
• Fan Purge, IAQ Feature
• Meets California Title 24
COOL
HEAT
Owner’s Manual
53DFS250-SL-BRY
Cancels: New OM 17-101
Front Panel
Am
:
Su
AUTO
COOL
HEAT
11/04
Backlit LCD Display
Warmer or + Button
Cooler or - Button
Override Button
Heat or Cool Indicator
Red = Heat, Green = Cool
On
Program
:
Pm
occupied1
Su
COOL
HEAT
Table of Contents
FRONT PANEL 1
DISPLAY 2
QUICK START
Set the clock and go
BASIC OPERATION 2
PROGRAMMING
Occupied and
Unoccupied Periods
ADVANCED SETUP 4
ABOUT ADVANCED FEATURES
AND OPERATION 5
WARRANTY 7
IMPORTANT: Follow Installation Instructions before
proceeding and set therm ostat to mod e “OFF” pr ior
to changing settings in setup or restoring factory
defaults.
PROGRAM
HOLIDAYFANMODE
SET CLOCK
OVER
2
3
Display
2
1
9
8
:
SuMTuWThFSa
AUTO
OFFON
Locked
Fan
6
Program
Am
Stop Start
Pm
unoccupied 123
Quick Start
1
On
10
Setup
7
Override
COOL
HEAT
4
1
5
1
4
Set the Clock and Go
:
Pm
NOTE: During Setup and
Programming:
Pressing the Mode button
selects different flashing
items (represented in
black).
Pressing the Up and
Down buttons will modify
the flashing selection.
3
1 Mode Indicators
Selects the operation mode of the equipment.
COOL — indicates the air conditioning mode.
HEAT — indicates the heat mod e.
AUTO — indicates the system will automatically
changeover between the heat and cool
modes as the temperature varies.
OFF — indicates the entire system is turned off.
PROGRAM ON —indicates the stored program is
enabled to run.
See below.
2 Clock with Day of the Week
Indicates the current time and day. This clock is also
used to program the timer periods.
See below.
3 Room Temperature Display
Indicates the current
room temperature.
4 Desired Set Temperature
Indicates desired
room temperature(s).
See page 3.
5 Override Indication
Indicates the current program is currently being
overridden for up to 4 hours.
See pages 3 and 5
6 Occupied or Unoccupied Indication
Indicates the program number: Occupied 1, 2, 3, or
Unoccupied.
See pages 3 and 4.
7 Setup Indication
Indicates the thermo stat is in the programming
mode.
See page 4.
M
The thermostat is prepro g r amm ed fr o m the factory to operate equipment* witho ut the need for further programmin g.
To optimize the installation of th is thermostat f oll ow the instructions in the Advanced Set up section.
*
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.
Basic Operation
Select Mode
The HEAT setting indicates
the temperature the room has
to reach before the unit will
turn on to heat the room.
.
The COOL setting indicates
the temperature the room has
to reach before the unit will
turn on to cool the room.
:
Pm
M
HEAT
:
Pm
M
COOL
8 Fan Operation Indication
Fan On Icon — indicates constant continuous fan
operation.
When FanOnIcon is not lit — indicates the fan will
only operate when necessary to heat or to cool.
9 Locked Indication
Locked appears after the right combination of
buttons are pressed, rendering the buttons
inoperative.
See page 5.
10 Start/Stop Indication
Start or Stop appears when programming timer
functions.
See page 3.
Page 2
AUTO will automatically
select heat or cool based on
room temperature demand.
Program On will activate the
stored timer operation.
(Occupied and Unoccupied
OFF indicates the system is
periods.)
turned off.
:
M
AUTO
:
M
:
M
OFF
Pm
Pm
Pm
Program
unoccupied
COOL
HEAT
On
Basic Operation
Select Desired Temperature
In any mode, adjust the
desired Set Point Temperature
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
the heat or
Override
Su
Su
with
buttons.
:
M
AUTO
Pm
COOL
HEAT
Cool modes will adjust only
cool set point temperature.
During programmed, unoccupied
periods a press of the Override
button will force the thermostat into
Occupied 1 comfort settings,
Pm
Stop
unoccupied
COOL
HEAT
:
On
Program
temporarily.
With each successive push of the
Override button, the override timer
will add 30 minutes, until the maximum of 4 hours is reached. Then
the next press will zero out the override timer, returning to unoccupied if
there are no further button presses.
When in Override, the Override icon
Pm
:
On
:
Program
occupied 1
COOL
Override
HEAT
and the Occupied 1 icon appear on
the display.
The time of day clock alternates with
the time remaining in override.
During Override, the set point temperatures are adjustable, provided
the keypad is not locked.
Adjust the heating
set point for unoccupied
periods.
(35to99F)
Select the day for
Occupied 1.
Adjust the start time
for occupied 1.
Adjust the stop time
for occupied 1.
Select Occupied 1 to run
on this day (On), or not to
run this day (Off).
unoccupied
M
:
M
:
M
M
ON
occupied 1
Am
occupied 1
Stop
Pm
occupied 1
occupied 1
COOL
HEAT
Start
Programming Occupied and Unoccupied Periods
1
Select 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)
occupied
occupied 1
occupied 1
unoccupied
COOL
COOL
HEAT
COOL
The copy command becomes available after the maximum number of occupied periods are programmed in a
day. This example uses 1 as the maximum occupied
periods ever programmed in one day.
Tu
Selecting Yes, then pressing mode will copy the previous day’s program and
then will ask the same cop y que stion ag ai n. If y es is se l ected each tim e , this
routine will repeat until Saturday is copied to Sunday. After Saturday is
copied to Sunday, the copy command is unavailable.
Tu
:
Tu
:
Tu
occupied 1
Am
Start
occupied 1
Stop
Pm
occupied 1
Page 3