Carrier 53DFS250-FS User Manual
Owner's manual
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Owner's Manual
PROGRAMMABLE DIGITAL THERMOSTAT
53DFS250-FS
Front Panel
I 1 [Liquid Crystal Display
with Thermoglow™ Backlight
m Up/Down Buttons
m Mode Button
Override Button
m Heat or Cool Indicator
___
Heat = Red, Cooi = Green
I 6 [Temperature Sensor Bubble
Table of Contents
FRONT PANEL
DISPLAY
QUICK START
Set the clock and go
BASIC OPERATION
PROGRAMMING
Occupied and
Unoccupied Periods
ADVANCED SETUP
ABOUT ADVANCED FEATURES
AND OPERATION
WARRANTY
1
1
2
2
3
4
5
7
IMPORTANT:
Follow
Installation Instructions
before proceeding.
A
CAUTION:
SET THERMOSTAT TO MODE "OFF'
PRIOR TO CHANGING SETTINGS IN SETUP OR
RESTORING FACTORY DEFAULTS.
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, lAC Feature
Meets California Title 24
Display
C
ool
Locked
Override
AUTO
Outside
ONOFF
H
eat
0 0
00
-Q
n.
j-E
-S
m 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.
[~2~| Clock with Day of the Week
Indicates the current time and day. This clock is also
used to program the timer periods.
See page 2.
m Room Temperature Display
Indicates the current room temperature.
0
Desired Set Temperature
Indicates desired room temperature(s).
See page 2.
[1
Override Indication
Indicates the current program is currently being over
ridden for up to 4 hours.
See pages 2 and 5.
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.
Book
1
4
Catalog No. 535-328
Printed in U.S.A.
Form OM53-3
Pg 1
11-04
Replaces; New
Tata
3e 2f