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Wall / Trim Plate  
Sub-Base  
UP  
Orientation  
Marks (3)  
INSTALLATION AND  
OPERATING INSTRUCTIONS  
TH10  
UP  
®
EcoStat TH10 Heating Only  
Mercury FREE Manual Thermostat  
52059  
Mounting Holes  
LUX PRODUCTS CORPORATION  
Mt. Laurel, New Jersey 08054, USA  
9. Insert the two longer mounting screws provided through the right and left Trim Plate screw holes  
and thread each screw into the mounting holes into the wall or the plastic screw anchors.  
10. Carefully push all excess wire back into the wall. Align the thermostat sub-base with the  
decorative wall plate by using the 3 alignment pins and holes molded into the back of the  
subbase and Trim Plate. Attach the Sub-Base to the Trim Plate using the two smaller mounting  
screws provided. Thread these two small screws into the single inner holes in the Trim Plate.  
11. Now that the Sub-Base is mounted, align the front portion of the thermostat with the Sub-Base  
using the Light Button and the cutout for it in the Sub-Base. While holding the thermostat in  
place against the Sub-Base, carefully and evenly tighten the 3 silver captive screws that are held  
in place inside the front of the thermostat assembly.  
IMPORTANT!  
Please read all instructions carefully before beginning installation and save for future  
reference. Before removing any wiring from your existing thermostat, the wires must  
be labeled with their terminal designations. Ignore the color of the wires since they  
may not comply with any standard.  
Thank you for your confidence in our product. To obtain the best results from your investment,  
please read these instructions thoroughly. You should become fully acquainted with this thermostat  
before installing it for usage. Follow the installation procedures carefully, and one step at a time.  
This will save you time and minimize the chance of damaging either the thermostat or the systems  
that it controls. These instructions may contain information beyond that required for your particular  
installation. Please save these instructions for future reference.  
WIRING INFORMATION  
** Complete heating and/or cooling system wiring can be found in the WIRE IDENTIFICATION AND  
WIRING SCHEMATICS section of this instruction sheet. The schematics shown provide component  
information for brand new installations or for unreferenced wires.  
COMPATIBILITY  
This mechanical thermostat can be used with most 2-wire, single-stage 24 volt gas, oil, or electric  
heating systems. It cannot be used with cooling systems, heat pumps, 3 wire zone valves, line  
voltage (120/240 volt) heating systems, or Millivolt systems. Ask your dealer for other LUX  
thermostats to control those systems.  
SETUP  
The only item that will need to be tailored to your  
system is the Heat Anticipator. If you are  
Heat  
75  
FEATURES  
replacing an old mechanical thermostat, find the  
Anticipator setting on the old thermostat, and set  
the new thermostat to the same value. Do this by  
carefully sliding the silver metal pointer, shown  
here, over desired number printed on the  
Anticipator  
Adjustment  
• Push Button Back Light  
• Glow-In-The-Dark Dial Numbers  
• Soft Rubber Set Temperature Ring  
• Large Easy To Use Mode Switches  
55  
65  
Anticipator scale. If an old Anticipator setting  
cannot be determined, look on the gas control  
Light Button  
valve on your furnace, and find either the Anticipator Value or a Current Rating. This will be the  
value to use for the Anticipator setting. If you cannot find either of these numbers, set it to .6  
initially to start with. During heating season, your furnace should operate about five times an hour.  
If adjustments are necessary, move heat anticipator pointer slightly and recheck. A lesser value will  
cause your heater to cycle more frequently, and a larger value will cause it to cycle less frequently.  
Mode  
Switch  
75  
65  
85  
55  
Set  
Mercury Free  
Temperature  
55  
85  
OPERATION  
65  
75  
Ambient  
Room  
Temperature  
There is a mode switch on the front that has two positions: HEAT and OFF. In the winter, set the  
system switch to HEAT to control your heating system. In the spring, summer and fall, or when the  
windows are open, you can set the switch OFF. In HEAT mode, turn the front thermostat dial to the  
desired temperature setting.  
Set  
Temperature  
Selector Ring  
US Patent USP D471,572  
BACKLIGHT  
This thermostat has an illuminated panel to assist in reading the temperature while in low light  
conditions. While in HEAT mode, press and hold the button on the top of the thermostat. The  
backlight will not operate while the thermostat is in OFF mode.  
SELECTING A LOCATION  
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.  
TECHNICAL ASSISTANCE  
2. Do not locate where air circulation is poor, such as in a corner or an alcove, or behind an open  
door.  
3. Do not install it where there are unusual heating conditions, such as: in direct sunlight; near a  
lamp, television, radiator, register, or fireplace; near hot water pipes in a wall; near a stove on the  
other side of a wall.  
4. 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.  
5. Do not locate in a damp area. This can lead to corrosion that may shorten thermostat life.  
6. If painting or construction work has yet to be completed, cover the unit completely or do not  
install it.  
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 night at  
questions, and also permits you to email your questions to our technical support staff at your  
convenience.  
WARRANTY  
Limited Warranty: If this unit fails because of defects in materials or workmanship within three years  
of the 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 three years from the 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 location from which the 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. and Canada only.  
TOOLS REQUIRED  
• #1 Phillips screwdriver  
• Drill with 3/16 in. (4.8mm) bit  
• #1 Slotted screwdriver  
• Wire Stripper / Cutter  
NOTE: Review the type of wiring configuration that your system requires, prior to removing your old  
thermostat or its wiring connections.  
REMOVAL OF OLD UNIT  
1. Turn OFF the electricity to all heating and cooling components. Do not turn the  
electricity back on until all work is completed.  
2. Remove the cover and front portion of your old thermostat to expose the wiring  
connections.  
F
OF  
3. Write down the letters printed near each wire terminal that is used, and the color  
of the wire that is connected to it. Using the enclosed labels, attach a label to each  
of your wires so that the letter matches the marking on your existing thermostat.  
4. When they are all labeled, carefully remove the wires one at a time, making sure that they do not  
fall back inside the wall. Do not allow any of the bare wire ends to touch each other, or any parts  
on the thermostat.  
5. Loosen all of the screws on the old thermostat and remove it from the wall.  
INSTALLATION  
MOUNTING  
1. Strip insulation leaving 3/8 in. (9.5mm) bare wire ends and clean off any corrosion.  
2. Fill wall opening with non-combustible insulation to prevent drafts from affecting the thermostat.  
3. The Wall/Trim Plate is optional, however its usage is recommended.  
4. Remove the front trim ring from the thermostat by pulling it straight outwards.  
5. If there are no existing mounting holes that are able to be reused, hold the Trim Plate level against  
the wall with the “UP” markings up, and mark the “outer” two oval mounting holes on the right  
and left. NOTE: if you are not using the Trim Plate, you can still mark the holes for the thermostat  
using the two small inner holes on the right and left of the Trim Plate, which line up with the  
thermostat mounting holes.  
6. If you are mounting the base to a soft material like plasterboard, the screws alone may not hold.  
Drill a 3/16 in. (4.8mm) hole at each screw location, and insert the plastic anchors provided into  
the wall. If you are mounting to wood or similar substance, the screws may be used alone without  
the plastic anchors.  
7. First, feed the wires through the large middle hole in decorative wall plate (if used) and then  
through the square lower hole near the bottom of the thermostat’s Sub-Base.  
8. Referring to your earlier notes from removing your old thermostat, and the electrical diagrams in  
this manual, attach the wires to the terminal screws. Make sure bare metal wires do not touch  
each other. The wire connector screws on the Sub-Base may need to be loosened prior to  
inserting any wires. When all wiring is complete, ensure that every screw is securely tightened.  
© 2008 LUX PRODUCTS CORPORATION. ALL RIGHTS RESERVED  
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(TH10) ENGLISH - WIRE IDENTIFICATION AND WIRING SCHEMATICS  
ECOSTAT TH10  
HEATING ONLY SYSTEM WIRING  
W
RH  
+
-
GAS  
VALVE  
OR  
SYSTEM  
XFMR  
HEATER  
WIRING DIAGRAM NOTES:  
• If replacing a Honeywell TM-11, tape off the “R” wire. Connect the  
“B” wire to the “RH” terminal.  
• If replacing a thermostat that has a clock wire labeled as “C,” tape off  
this wire and do not connect it to this thermostat.  
• If “Y” and “C” wires are both present, then “C” is a common wire,  
tape off this wire and do not connect it to this thermostat.  
• If a “B” wire in your system is a common wire, tape off this wire and  
do not connect it to this thermostat.  
(TH10) FRANÇAIS - SCHÉMAS D'IDENTIFICATION DES FILS ET DU CÂBLAGE  
CÂBLAGE DU SYSTÈME DE CHAUFFAGE  
SEULEMENT ECOSTAT TH10  
W
RH  
+
-
VALVE À  
GAZ OU  
CHAUDIÈRE  
SYSTÈME  
XFMR  
NOTES DU DIAGRAMME DE CÂBLAGE :  
• Si vous remplacez un modèle Honeywell TM-11, couvrez le fil « R ».  
Branchez le fil « B » à la borne « RH ».  
• Si vous remplacez un thermostat à fil d'horloge portant la mention  
« C », couvrez ce fil et ne le branchez pas à ce thermostat.  
• Si vous avez les fils « Y » et « C », alors le « C » est un fil commun,  
couvrez-le et ne le branchez pas à ce thermostat.  
• Si un fil « B » de votre système et un fil commun, couvrez ce fil et ne  
le branchez pas à ce thermostat.  
(TH10) ESPAÑOL – IDENTIFICACIÓN DE CABLES Y DIAGRAMAS DE CABLEADO  
CABLEADO DEL SISTEMA SÓLO  
PARA CALEFACCIÓN ECOSTAT TH10  
W
RH  
+
-
VÁLVULA  
DE GAS O  
CALENTADOR  
SISTEMA  
XFMR  
NOTAS DEL DIAGRAMA DEL CABLEADO:  
• Si reemplaza un Honeywell TM-11 desprenda el cable "R". Conecte el  
cable “B” a la terminal “RH”.  
• Si reemplaza el termostato que tiene un cable de reloj marcado como  
tipo “C”, desprenda este cable y no lo conecte a este termostato.  
• Si los cables “Y” y “C” están presentes, entonces “C” es un cable  
normal, despréndalo y no lo conecte a este termostato.  
• Si un cable “B” en su sistema es un cable normal, despréndalo y no lo  
conecte a este termostato.