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3) REMOVING OLD THERMOSTAT  
Please read all instructions carefully. As you complete each step, check the  
adjoining square .  
Disconnect electricity and turn off gas to the heater.  
Remove cover from old thermostat.  
Disconnect wires from thermostat, making sure they do not fall back inside the wall.  
Make note of wires and to which terminals they are attached as you disconnect  
INSTALLATION AND  
OPERATING INSTRUCTIONS  
LUX PRODUCTS CORPORATION  
Mt. Laurel, New Jersey 08054, USA  
52022  
them. For example: Yellow wire to terminal Y, Red wire to terminal RH,” etc.  
3
Strip insulation ⁄  
8
" from wire ends and clean off any corrosion.  
Loosen all screws on the old thermostat and remove it from the wall.  
Fill wall opening with non-combustible insulation to prevent drafts from affecting  
thermostat.  
T40-1143SA  
4) INSTALLING NEW THERMOSTAT  
50 60 70 80 90  
10 15 20 25 30  
HEATING & COOLING  
THERMOSTAT  
Place new decorative wall plate (if supplied), Figure 4, over wall opening.  
Decorative wall plate can optionally be left off.  
LUX  
20  
25  
10 1650  
80  
30  
70  
50  
90  
Remove Front Cover of new thermostat by inserting a finger in the side of the  
thermostat and gently prying away each corner. Remove Base, Figure 2, from  
Sub-Base, Figure 3, by loosening three captive screws.  
ATTENTION : not for use with  
compressors without time delays.  
Place Sub-Base, Figure 3, on wallplate over wall opening. Mark wall with pencil at  
mounting holes as shown in Figure 2. Now lay wallplate and Sub-Base to the side.  
3
Drill two holes with  
16" bit, 1" deep.  
Insert plastic screw anchors into drilled holes, flush with wall surface.  
Bring wires through large hole in decorative wall plate and through Hole For  
Wires in Sub-Base.  
SPECIFICATIONS  
ELECTRICAL RATING  
24 Vac (30 Vac Maximum)  
SWITCH ACTION  
Referring to your notes and the following diagrams, attach wires to terminal  
screws shown in Figure 2. Make sure bare metal wires do not touch each other.  
Push all excess wire back into wall.  
Open contact switch  
ANTICIPATOR RATING  
(HEATING) 0.15A to 1.2A  
(COOLING) Fixed 24 VAC  
TEMPERATURE RANGE  
50°F to 90°F  
WIRING DIAGRAMS  
Cooling Systems  
Heating Systems  
FAN RELAY  
COOLING COMPRESSOR  
HEATING CONTROL  
HEATING TRANSFORMER  
FAN RELAY  
COOLING COMPRESSOR  
HEATING CONTROL  
HEATING TRANSFORMER  
INSTALLATION & OPERATION  
DAMPER OR CHANGEOVER VALVE  
(POWERED IN HEAT)  
DAMPER OR CHANGEOVER VALVE  
(POWERED IN HEAT)  
1). THERMOSTAT LOCATION  
DAMPER OR CHANGEOVER VALVE  
(POWERED IN COOL)  
DAMPER OR CHANGEOVER VALVE  
(POWERED IN COOL)  
For accurate temperature control and comfort, correct location is very important. On  
new installations, the guidelines listed below should be followed as closely as  
possible. When replacing an old thermostat, install the new one in the same location  
unless these conditions suggest otherwise.  
1. Locate the thermostat on an inside wall about five feet above the floor, where it is  
easy to install and adjust. It should be in a room that is used often, such as a family  
room.  
2. Do not install it where there are unusual heating conditions, such as direct sunlight,  
close to a lamp, radio, television, radiator, register, near a fireplace, or other heat  
producing appliance. Also, check for hot water pipes within the wall, or a stove on  
the other side of the wall.  
3. Do not locate in unusual cooling conditions, such as on an outside wall, or one  
separating an unheated room, or in drafts from stairwells, doors, or windows.  
4. Do not locate in a damp or humid area. This can shorten thermostat life due to  
corrosion.  
COOL TRANSFORMER  
COOL TRANSFORMER  
G
Y
W
RH  
B
O
RC  
G
Y
W
RH  
B
O
RC  
Tape Off *  
Tape Off **  
Tape Off  
Tape Off  
4
*
C
C
T
F
C
Y
C
T
F
* If replacing a Honeywell TM-11,  
tape off wire “R”; connect wire “B”  
to terminal “RH.”  
** If replacing a Honeywell thermostat  
with a clock wire “C,” tape off wire “C”  
* If both Y and C wire are  
present, tape off “C” wire.  
Heating/Cooling Systems  
Heating/Cooling Systems  
4- or 5-Wire with One Transformer  
FAN RELAY  
5- or 6-Wire with Two Transformers  
FAN RELAY  
COOLING COMPRESSOR  
HEATING CONTROL  
COOLING COMPRESSOR  
HEATING CONTROL  
HEATING TRANSFORMER  
HEATING TRANSFORMER  
DAMPER OR CHANGEOVER VALVE  
(POWERED IN HEAT)  
DAMPER OR CHANGEOVER VALVE  
(POWERED IN HEAT)  
5. Do not locate where air circulation is poor, such as in a corner, alcove, or behind an  
open door.  
6. Do not install until all construction work and painting have been completed.  
DAMPER OR CHANGEOVER VALVE  
(POWERED IN COOL)  
DAMPER OR CHANGEOVER VALVE  
(POWERED IN COOL)  
COOL TRANSFORMER  
COOL TRANSFORMER  
G
Y
W
RH  
B
O
RC  
G
Y
W
RH  
B
O
RC  
2) TOOLS REQUIRED  
V
Tape Off  
Tape Off  
3
Wirestripper or knife, drill with  
16" bit, screwdriver, level and a pencil.  
*
*
F
Y
F
C
(Optional)  
(Optional)  
(Optional)  
(Optional)  
C
G
C
G
Y
T
TC  
* If both Y and C wire are  
present, tape off “C” wire.  
* If both Y and C wire are  
present, tape off “C” wire.  
© COPYRIGHT 2006 LUX PRODUCTS CORPORATION. ALL RIGHTS RESERVED  
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FIGURE 3  
SUB-BASE  
FIGURE 4  
DECORATIVE WALL PLATE  
These diagrams below are provided for new installations or  
unreferenced wires.  
TYPICAL HOOKUP FOR 2-WIRE  
24V HEATING SYSTEM AND  
MILLIVOLT SYSTEM  
TYPICAL HOOKUP FOR 3-WIRE  
HEAT SYSTEM IF THIRD  
WIRE IS FAN WIRE  
TYPICAL COOLING AND  
HEATING SYSTEM  
(4-WIRE)  
UvePrt  
G
Y
W
RH  
B
O
RC  
G
Y
W
RH  
B
O
RC  
G
Y
W
RH  
B
O
RC  
GAS  
GAS  
GAS  
FAN  
VALVE  
VALVE  
VALVE  
FAN  
COOL  
COMP  
24 VAC  
TRANSFORMER  
OR  
24 VAC HEAT  
24 VAC  
TRANSFORMER  
TRANSFORMER  
110  
THERMOPILE  
110  
110  
Figure 9  
Figure 8  
Figure 10  
TYPICAL SINGLE-STAGE  
HEAT PUMP WIRING  
TYPICAL COOLING AND  
HEATING SYSTEM  
(5-WIRE)  
G
Y
W
RH  
B
O
RC  
G
Y
W
RH  
B
O
RC  
ADD  
JUMPER  
ALT.  
BETWEEN  
Y & W  
CHG.  
FAN  
GAS  
FAN  
OVER  
VALVE  
REMOVE  
JUMPER  
BETWEEN  
RH & RC  
COOL  
COMP  
COMP  
TECHNICAL ASSISTANCE  
24 VAC HEAT  
TRANSFORMER  
110  
24 VAC HEAT  
TRANSFORMER  
24 VAC COOL  
TRANSFORMER  
If you have any problems installing or using this thermostat, please carefully  
and thoroughly review the instruction manual. If you require assistance, please  
contact our Technical Assistance Department at 856-234-8803 during regular  
business hours between 8:00AM and 4:30PM Eastern Standard Time, Monday  
through Friday. You can also receive technical assistance online anytime day or  
most common technical questions, and also permits you to email your  
questions to our technical support staff at your convenience.  
110  
Figure 12  
110  
Figure 11  
N O T E  
If you have an electric system and the blower does not operate after instal-  
lation, find the factory installed yellow wire currently attached to the “Yterminal  
and move it to the “A” terminal on the sub-base.  
Place Base, Figure 3, over Sub-Base and attach by tightening three captive  
screws.  
Fasten loosely to wall using two mounting screws. Place a level against the  
bottom of the Base, adjust until it is level and then tighten mounting screws to  
secure.  
WARRANTY  
Find anticipator setting on old thermostat. Setting on new thermostat should be  
the same. Do this by carefully sliding the long pointer , Figure 2, over desired  
number printed on the anticipator. If old anticipator setting cannot be  
determined, look on gas control on furnace, or set at at .6. During heating  
season, furnace should operate about five times an hour. If adjustments are  
necessary, move heat anticipator pointer slightly and recheck. NOTE: Set  
pointer to 1.2 for millivolt systems.  
Attach front cover, Figure 1, to base.  
Turn electricity and gas back on and set pointer on top of thermostat to desired  
temperature.  
Limited Warranty: If this unit fails because of defects in materials or  
workmanship within three years of date of original purchase, LUX Products  
Corporation 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 three years 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 ASSISTANCE" 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.  
FOR HEATING: Set slide switch to “Heat”. Set fan switch to “Auto”.  
FOR COOLING: Set slide switch to “Cool”. Set fan switch to “Auto”.  
FAN: For continuous blower operation, set switch to “ON”. For automatic  
blower operation set fan switch to “Auto”. Thermostat will then cycle the blower  
on” and “off”.  
A thermostat can only control temperature near it. If you find that it is  
uncomfortable some distance away from the thermostat, change the  
setting in order to compensate for this.  
FIGURE 2  
BASE  
FIGURE 1  
FRONT COVER  
MOUNTING HOLE  
UP  
ANTICIPATOR  
E
RECYCLING  
This product does not contain mercury. However,  
NOTICE  
LONG  
.5  
POINTER  
.3  
this product may replace a unit which contains  
mercury and should not be disposed of in the trash.  
Contact your local waste management authority for  
proper disposal instructions for mercury in a sealed  
glass tube. If you have any questions, please call  
(856) 234-8803.  
.4  
CAPTIVE  
SCREW  
MOUNTING  
HOLE  
HOLES FOR WIRES  
CAPTIVE  
SCREW