Lux Products TX250 Operation, Advanced Features, The Built-In Energy Star Programs, Temporary

This thermostat is “armchair programmable” You can make any program or setting changes with the thermostat body off or on the wall thermostat base.

OPERATION

The TX250 alternately displays the current time and the room temperature. It also displays the day of the week and the currently active

program period that is controlling the temperature: MORN, DAY, EVE, or NITE.

The set point temperature will appear in the right side of the display. In the winter, set the system switch to HEAT to control your heating system. In the summer, set the switch to COOL to control your air conditioner. In spring and fall or when windows are open, you can

set the system switch OFF.
Setting the FAN switch to AUTO	N	O	T	E
automatically runs your system’s fan	The FAN switch works only if your system
during heating and cooling. Setting	provides a wire for the TX250’s “G” terminal.
the FAN switch to ON runs your

system’s fan continuously even without heating or cooling.

THE BUILT-IN ENERGY STAR® PROGRAMS

TEMPERATURE HOLD				•	Press HOLD. Adjust temperature as
MO		H			desired with UP/DOWN.
	66	E
DAY		A	HOLD	•	Temperature setting will not change even
		T
	PM			•	after next program period begins.
	HOLD				To clear, press HOLD again.

ADVANCED FEATURES

TEMPERATURE SWING

A thermostat works by turning your heating or cooling system on and off whenever the room temperature varies a certain number of degrees from the set-point temperature. This variation is the “swing.”

Your system should cycle on about 3 to 6 times per hour. A smaller swing number increases the number of cycles, so room temperature is more constant. Setting “1” is approximately 1/4°F. Each increase of 1 value increases the swing by approximately 1/4°F. A larger swing number decreases the number of cycles, and may save energy in some cases.

Push in the RESET key. This sets the default heating and cooling programs. To review the default programs, move the Speed Slide to SET WEEKDAY or

SET WEEKEND.

You can use the default programs as shown, or change them as you wish. Each day is divided into four periods. Each period has its own starting time and temperature.

	PERIOD	HEAT	COOL
WEEKDAYS	MORN	6:00 AM 70°	6:00 AM 78°
preprograms	DAY	8:00 AM 62°	8:00 AM 85°
	EVE	6:00 PM 70°	6:00 PM 78°
	NIGHT	10:00 PM 62°	10:00 PM 82°
	MORN	6:00 AM 70°	6:00 AM 78°
WEEKEND	DAY	8:00 AM 62°	8:00 AM 85°
preprograms	EVE	6:00 PM 70°	6:00 PM 78°
	NIGHT	10:00 PM 62°	10:00 PM 82°

SWING SETTINGS				HOLD	NEXT	Press together
	SET TEMP SWING	Speed Slide must		UP	DOWN	To change
		be in the run
						swing
		position
				NEXT	Press to set.
W	A	R	N	I	N	G

Making these changes will require you to reset the thermostat. Copy any of your customized programs onto the blank chart. This will be your reference to re-enter the programs afterwards.

PROGRAMMING THE TX250

You can change any preset times and/or temperatures to suit your schedules for the

CHANGING FROM °F TO °C AND A 12HR CLOCK TO A 24HR CLOCK

weekday and weekend programs. Each period (Morning, Day,	MO TU WE TH FR	H
Evening, and Night) is programmed for HEAT and for COOL.	MORN	E
		A

T

		AM
HEAT	Select HEAT to program the OR	Select COOL to program the
OFF
COOL	TX250 for controlling your heater.	TX250 for controlling your air conditioner.

Slide the Speed Slide to SET WEEKDAY PROGRAM. To program the weekends SET WEEKEND. With Slide on SET WEEKDAY PROGRAM, you will see the display above.

UP	DOWN To change the start	UP	DOWN To change the start
	time for MORN.		time for EVE.
NEXT	To program temperature.	NEXT	To program temperature.
UP	DOWN To change the temp.	UP	DOWN To change the temp.
	setting for MORN.		setting for EVE.

•WARNING: Making these changes will require you to reset the thermostat. Copy any of your customized programs onto the chart below. This will be your reference to reenter the programs afterwards.

•Located to the left of the circuit board are three black jumpers C/F and 24/12H.

•To change to Celsius - remove jumper - JP2.

•To change to a 24HR clock - remove jumper- JP1.

•Press the reset key on the front of the thermostat for changes to take effect.

•Reprogram as necessary.

JP3 JP2

JP1

OPEN CLOSE

JP3 2MIN 5MIN

JP2 C F

JP1 24HR 12HR

GAS ELEC

NEXT	To move to DAY.	NEXT	To move to NIGHT.
UP	DOWN To change start time	UP	DOWN To change the start
	for DAY.		time for NIGHT.
NEXT	To program temperature.	NEXT	To program temperature.
UP	DOWN To change the temp.	UP	DOWN To change the temp.
	setting for DAY.		setting for NIGHT.
NEXT	To move to EVE.	Move Speed Slide to RUN position to
			start the programs.

SETTING THE TIME AND DAY

MO		C	A	U	T	I	O	N
		The TX250 is protected against normal static electric discharges.
	PM	However, in extremely dry weather you should touch another metal
		object before the TX250 to avoid potential loss of programs.

Move the Speed Slide to SET DAY/TIME position. You should see the display pictured above with a day of the week flashing. When you are finished setting the day and time, rotate the dial to RUN to return to normal operation or to another position to continue programming.

UP	To change	NEXT	To set current time. The (e.g.		UP	To change the
	current day.		“12:00”) will be flashing.		DOWN	current time.
TEMPERATURE OVERRIDE AND These features let you change the current
TEMPERATURE HOLD				Set Temperature without changing the programs
				stored in your thermostat’s memory.
TEMPORARY
				• Press UP/DOWN to change the current temperature
TEMPERATURE OVERRIDE
				setting. The OVERRIDE indicator appears on display.
				• The OVERRIDE feature will be automatically canceled
MO	H	UP		at the start of the next program period.
	E
	A			• To cancel OVERRIDE prior to next program period press
DAY	T
	PM	DOWN		UP/DOWN until original set temperature
	OVERRIDE			appears. OVERRIDE indicator will disappear from display.

5 MIN/2 MIN MINIMUM ON/OFF TIME

Your thermostat has an internal timer built in to protect your compressor. The timer forces a minimum on/off time of 5 minutes. You may change this minimum on/off time to 2 minutes. To accomplish this, remove the jumper labeled JP3. You must press the small reset

button on the face of the thermostat for the changes to take effect.

TECHNICAL SERVICE

If you have any problems installing or using this thermostat, please reread the instructions carefully. Technical Service is available through our Technical Service Number. If you require assistance, please call our offices between 8:00 a.m. and 4:30 p.m. Eastern Standard Time, Monday through Friday. The number is (856) 234-8803 or visit our online technical support at www.luxproducts.com.

WARRANTY

Limited Warranty: If this unit fails because of defects in materials or workmanship within one year of date of original purchase, LUX will, at its option, repair or replace it. This warranty does not cover damage by accident, misuse, or failure to follow installation instructions. Implied warranties are limited in duration to one year from date of original purchase. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. Please return malfunctioning or defective units to the participating retailer from which purchase was made, along with proof of purchase. Please refer to Technical Service Section before returning thermostat.

Purchaser assumes all risks and liability for incidental and consequential damage resulting from installation and use of this unit. Some states do not allow the exclusion of incidental or consequential damages, so the above exclusion may not apply to you. This warranty gives you specific legal rights and you may also have other rights which vary from state to state. Applicable in the U.S.A. only.

© COPYRIGHT 2004 LUX PRODUCTS CORPORATION. ALL RIGHTS RESERVED 3