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

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