Lux Products TX250 installation instructions Tools Required, Thermostat Location

INSTALLATION AND OPERATING INSTRUCTIONS

TX250 SERIES

SMART TEMP ELECTRONIC THERMOSTAT

Easy as

1–2–3

C A U T I O N

•Your thermostat is a precision instrument. Please handle it with care.

•Turn off electricity to the appliance before installing or servicing thermostat or any part of the system. Do not turn electricity back on until work is completed.

•Do not short (jumper) across electric terminals at control on furnace or air conditioner to test the system. This will damage the thermostat and void your warranty.

•All wiring must conform to local codes and ordinances.

•This thermostat is designed for use with 24 volt and millivolt systems. The thermostat should be limited to a maximum of 1.0 amps; higher amperage may cause damage to the thermostat. If you are in doubt, call your utility company.

Installs Easily Set Day & Time Choose Heat or Cool

Complete, Easy To Read Programming And Installation Instructions Inside

LUX PRODUCTS CORPORATION • Mt. Laurel, New Jersey 08054, USA 43374

WARNING: Use Energizer® or DURACELL® Alkaline Batteries Only.

Energizer® is a registered trademark of Eveready Battery Company, Inc. DURACELL® is a registered trademark of The Gillette Company, Inc.

I M P O R T A N T !

INSTALLATION

Please read all instructions carefully before beginning installation.

TOOLS REQUIRED

#1 Phillips screwdriver (small) Drill with 3/16-in. (4.8mm) bit

THERMOSTAT LOCATION

C A U T I O N
To avoid electrical shock and
to prevent damage to the	OFF
furnace, air conditioner, and
thermostat, disconnect the power
supply before beginning work. This
can be done at the fuse box, at the
circuit breaker, or at the appliance.

READ	Thank you for your confidence in our product. To obtain the best results
	from your investment, please read these instructions and acquaint yourself with
INSTALLATION
	your purchase before installing your new thermostat. Then follow the
INSTRUCTIONS	installation procedures, one step at a time. This will save you time and
FIRST	minimize the chance of damaging the thermostat and the systems it controls.

These instructions may contain information beyond that required for your particular installation. Please save for future reference.

On replacement installations, mount the new thermostat in place of the old one unless the conditions listed below suggest otherwise. On new installations, follow the guidelines listed below.

1.	Locate the thermostat on an inside wall, about 5 ft. (1.5m) above the floor, and in
	a room that is used often.
2.	Do not install it where there are unusual heating conditions, such as: in direct
	sunlight; near a lamp, radio, television, radiator, register, or fireplace; near hot

FEATURES

•The TX250 can be used with most 24

volt gas, oil or	Thermostat	Fan Switch
electric heating	Body
and air
conditioning

Liquid Crystal

Display

	water pipes in a wall; near a stove on the other side of a wall.
3.	Do not locate in unusual cooling conditions, such as: on a wall separating an
	unheated room; or in a draft from a stairwell, door, or window.
4.	Do not locate in a damp area. This can lead to corrosion that will shorten
	thermostat life.
5.	Do not locate where air circulation is poor, such as: in a corner or an alcove; or
	behind an open door.
6.	Do not install the unit until all construction work and painting has been completed.

systems, single-
stage heat pumps
or gas millivolt
heating systems.
It cannot be used
with 120 volt heating
systems or multistage
heat pumps. Ask your
dealer for other LUX
thermostats to
control those	Mode
systems.
	Switch	Separator
• The TX250 is
		Tabs

programmable. There are four

Reset

Button

Speed

Slide

7. This thermostat does not require leveling.

REMOVING THE OLD THERMOSTAT

Switch electricity to the furnace and air conditioner OFF; then proceed with the following steps.

Y

W 1. Remove cover from old thermostat.

Most are snap-on types and simply pull off. Some have locking screws on the side. These must be loosened.

2.Note the letters printed near the terminals. Attach labels (enclosed) to each wire for identification. Remove and label wires one at a time. Make sure the

wires do not fall back inside the wall.

C A U T I O N

Read instructions carefully before removing any wiring from existing thermostat. Wires must be labeled before they are removed. When removing wires from their terminals, ignore the color of the wires since these may not comply with the standard.

programming periods

per day. Each period can be programmed separately.

3. Loosen all screws on the old thermostat and remove it from the wall.

MOUNTING THE TX250 ON THE WALL 2. Fill wall opening with

•Easy to use Speed Slide.

•You can use the built-in time/temperature programs, or alter them to suit your schedule. The TX250 provides separate programming for weekdays and weekends

— for both heating and cooling. You can override the programmed temperatures for as little as one programming period or for an entire vacation.

•In cool weather, when the system switch is set to HEAT, the TX250 may maintain cooler “set back” room temperatures to save energy. It will then change to warmer “comfort” settings — automatically, at specified times during the day.

•In warm weather, when the system switch is set to COOL, the TX250 may maintain warmer “set back” room temperatures to save energy. It will then change to cooler “comfort” settings — automatically, at specified times during the day.

•A liquid crystal display shows time, day of the week, and room and set temperatures.

•Temperature swing adjustment lets you fine-tune your system for maximum comfort and economy.

•A 2 or 5-minute minimum off time in COOL prevents your air conditioning system from being damaged.

•Two Energizer® or DURACELL® “AA” alkaline batteries (not included) are used to retain your time and temperature programs.

		Y
		W	non-combustible
Y	1. Strip insulation 3/8 in.	R
W
			insulation to prevent
	(9.5mm) from wire ends
			drafts from affecting
	and clean off any corrosion.
			the thermostat.

3.Cup and hold thermostat body and left tab in place with left hand. Separarte tabs with right hand.

C A U T I O N

Be careful not to drop the body or disturb electronic parts.

© COPYRIGHT 2004 LUX PRODUCTS CORPORATION. ALL RIGHTS RESERVED 1