Carrier 53DFS250-SL User Manual

Owner's Manual

PROGRAMMABLE DIGITAL THERMOSTAT

53DFS250-SL

				7-Day Programmable
	Table of Contents
				3 Occupied Modes, 1 Unoccupied Mode
	DISPLAY		2
				Auto Changeover
	QUICK START Set the clock and go		2
				Large, Easy To Read Display
	BASIC OPERATION		3
				Thermoglow™ Backlight
	PROGRAMMING Occupied and		3	Remote Sensor Ready
	Unoccupied Periods			Dry Contact Equipped
	ADVANCED SETUP		4
				Energy Saving Smart Fan
	ABOUT ADVANCED FEATURES		5	Fan Purge, lAQ Feature
	AND OPERATION			Meets Caiifornia Titie 24
	WARRANTY		7

IMPORTANT: Follow Installation Instructions

before proceeding,

A CAUTION: SET THERMOSTAT TO MODE "OFF"

PRIOR TO CHANGING SETTINGS IN SETUP OR

RESTORING FACTORY DEFAULTS.

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	Catalog No. 535-329	Printed in U.S.A.	Form OM53-4	Pg 1	11-04	Replaces: New
Tab	3e	2t

Display

		nOn Setupjra
B-		starti mi SJ		HB
		lied 123 flf fi
	SuMTuWThFSa ^unoccupied
	AUTO	|2®5| ° COOL -
B		00
	OFFON		HEAT-
B-		J1
	- Locked			HB
	-Fan ill

Mode Indicators

Selects the operation mode of the equipment. COOL — indicates the air conditioning

mode.

HEAT — indicates the heat mode. AUTO — indicates the system will auto­

matically 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
Q]	run. See page 3.
	Clock with Day of the Week
	Indicates the current time and day. This clock
	is also used to program the timer periods.
m	See this page.
	Room Temperature Display
	Indicates the current room temperature.
Q]	Desired Set Temperature
	Indicates desired room temperature(s).
Q]	See page 3.
	Override Indication
	Indicates the current program is currently be­
	ing overridden for up to 4 hours. See
ni	pages 3 and 5.
	Occupied or Unoccupied 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.

I 8 I Fan Operation Indication

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.

[j] Locked Indication

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.

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.

■OPress the Set Clock button to exit Setup screens.

To adjust the clock or Day use

I J ‘ n n

» t .ULIPm

Press the Set Clock button to exit Setup screens.

buttons.

To adjust the clock or Day use

buttons.

o

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.

Page 2

Basic Operation

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 periods.)

OFF indicates the system is turned off.

t 3 ■ fi rt 11 u !.

I 5 " ñ

I L U r:-

H

COOL

AUTO

HEAT

!S

Program<5n

unoccupied

OFF

Select Desired Temperature

In any mode, adjusi the 13’' II n w desired Set Point Temperature

with

COOL

: ■■■'

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-PrloyingramOn
i i-.UiJFPm	stop
	unoccupi^g	Q COOL
	?SZ*Zl
		HEAT
		cc

	f r<Tm
	11 .UU Pm
K “ 1 n		Program On
U -n llPm

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. 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

	^		o COOL	with the time remaining in
	I		Override
				override.
		■	HEAT	During Override, the set point
				temperatures are adjustable, pro­
			1?
				vided the keypad is not locked.

Programming Occupied and Unoccupied Periods

Press the Program button fo enter

	o	time period programming.
	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}	V
	Adjust the cooling		C
			Zi
	set point for unoccupied		COOL
	periods.
		(35 to 99 F)
	Adjust the heating		CO
	set point for unoccupied
	periods.
		(35 to 99 F)
	Select the day for
	Occupied 1.
		(M-Su)
		1 ■ ri riAm
		I.	U U

Adjust the start time for occupied 1.

C " n ñ

U.UUPm

Adjust the stop time for occupied 1.

On

Select Occupied 1 to run on this day (On), or not to

run this day (Off).

ON

Off

Page 3