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Owner's Manual
PROGRAMMABLE DIGITAL THERMOSTAT
53DFS250-FS
©
©
[]
[]
-q Liquid Crystal Display
with Thermoglew TM Backlight
[_ Up/Down Buttons
[]Mode Button
F4] Override Button
Fq Heat or Cool Indicator
Heat = Red, Cool = Green
[_Ternperature Sensor Bubble
I1€1,'1_Bill [_
FRONT PANEL 1
DISPLAY 1
QUICK START Set the clock and go 2
BASIC OPERATION 2
PROGRAMMING Occupied and
Unoccupied Periods 3
ADVANCED SETUP 4
ABOUT ADVANCED FEATURES
AND OPERATION 5
WARRANTY 7
IMPORTANT: Follow Installation Instructionsbefore proceeding.
CAUTION: SETTHERMOSTATTO MODE "OFF"
PRIOR TO CHANGING SETTINGSIN SETUPOR
RESTORING FACTORY DEFAULTS,
7-Day Programmable
3 Occupied periods and 1 Unoccupied period
Auto Changeover
Large, Easy To Read Display
Thermoglow TM Backlight
Remote Sensor Ready
Dry Contact Equipped
Energy Saving Smart Fan
Fan Purge, IAQ Feature
Meets California Title 24
.... 2
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[_SuMoTuWeThFrSa-Setup r_,,,w,_,,,
[_ sled123 o ,COOL,
LOCKea
un_ _ Override
[_ Outside []
_On_ ONOFF
_[_ HEAT _- []
E_ Mode Indicators
Selects the operation mode of the equipment.
HEAT -- indicates the heat mode.
COOL -- indicates the air conditioning mode.
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 page 2.
r_ Clock with of the Week
Day
Indicates the current time and day. This clock is also
used to program the timer periods. See page 2.
['3-] Room Temperature Display
Indicates the current room temperature.
[4-] Desired Set Temperature
Indicates desired room temperature(s). See page 2.
[5] Override Indication
Indicates the current program is currently being over-
ridden for up to 4 hours. See pages 2 and 5.
E_] Occupied or Unoccupied
Indication
Indicates the program number: Occupied 1,2, 3, or
Unoccupied. See pages 3 and 4.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No 535-328 Printed in U.SA Form OM53-3 Pg 1 11-04 Replaces: New