ATTACHING WIRES
C
A
U
T
I
O
N
Do not allow wires to touch each other or parts on thermostat. Wires must be
trapped between black spacer and brass terminal. Also, be sure to tighten securely
all 7 electrical terminal screws.
N O T E
If you are mounting the base
to a soft material like
plasterboard or if you are using
the old mounting holes, the
screws may not hold. Drill a
3/16-in. (4.8mm) hole at each
screw location, and insert the
plastic anchors provided. Then
mount the base as described
below.
Heating Systems
G
Y
W RH
B
O
RC
Tape Off *
* 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”
G
5
4
B
R
C
V
R
*
H
W
F
R
H
Tape Off **
C
Tape Off
TC
FAN RELAY
COOLING COMPRESSOR
HEATING CONTROL
HEATING TRANSFORMER
DAMPER OR CHANGEOVER VALVE
(POWERED IN HEAT)
DAMPER OR CHANGEOVER VALVE
(POWERED IN COOL)
COOL TRANSFORMER
Cooling Systems
G
Y
W RH
B
O
RC
Y
V
R
C
R
C
G
F
TC
Tape Off
FAN RELAY
COOLING COMPRESSOR
HEATING CONTROL
HEATING TRANSFORMER
DAMPER OR CHANGEOVER VALVE
(POWERED IN HEAT)
DAMPER OR CHANGEOVER VALVE
(POWERED IN COOL)
COOL TRANSFORMER
* If both Y and C wire are
present, tape off “C” wire.
*
Heating/Cooling Systems
4- or 5-Wire with One Transformer
G
Y
W RH
B
O
RC
C
Y
G
F
W
V
R
R
C
B
O
(Optional)
(Optional)
Tape Off
TC
FAN RELAY
COOLING COMPRESSOR
HEATING CONTROL
HEATING TRANSFORMER
DAMPER OR CHANGEOVER VALVE
(POWERED IN HEAT)
DAMPER OR CHANGEOVER VALVE
(POWERED IN COOL)
COOL TRANSFORMER
* If both Y and C wire are
present, tape off “C” wire.
*
FAN RELAY
COOLING COMPRESSOR
HEATING CONTROL
HEATING TRANSFORMER
DAMPER OR CHANGEOVER VALVE
(POWERED IN HEAT)
DAMPER OR CHANGEOVER VALVE
(POWERED IN COOL)
COOL TRANSFORMER
Heating/Cooling Systems
5- or 6-Wire with Two Transformers
G
Y
W RH
B
O
RC
Y
C
G
F
W
4
A
R
H
B
O
(Optional)
(Optional)
V
R
R
C
Tape Off
TC
*
* If both Y and C wire are
present, tape off “C” wire.
* If you have a “B” wire in your system which
is used as a common wire, connecting it to
the “B” terminal on this thermostat may
damage your system and/or the thermostat.
WIRING DIAGRAMS
G
R
W
G
Y
W
RH
B
O
RC
Latch Button
Base
Terminals
4. Hold the base against the wall, with the wires coming through
wherever it is convenient for wiring. Route the wires to below
the terminal block. Position the base for best appearance (to
hide any marks from an old thermostat). Attach the base to the
wall with the two screws provided.
These diagrams below are provided for new installations or unreferenced wires.
1. Remove fresh batteries from their carton.
2. Remove body of thermostat as described at
bottom of first column.
3. Remove the used batteries.
4. Install two new Energizer
®
or DURACELL
®
"AA" size
alkaline batteries in the battery compartment.
Observe the polarity marking shown in the
compartment. Place body back on wall.
5. Hook the top of the body onto the base, swing the body down and snap the body onto the
base.
Installation is now complete. Be sure to turn the power back on to your heating and /or air
conditioning system. If this is the first time you are installing batteries, the thermostat will display
“SUN 12:00 AM”. Within 90 seconds the thermostat will begin to display the room temperature
alternately with the time. To correct the display, see “Setting the TIME and DAY,” after you set the
programs.
N O T E
If you have an electric system and the blower does not operate after installation, find the
electric/gas heat selector on the back of the body. Move the selector to the ELEC position.
INSTALLING BATTERIES/ MAINTENANCE
The TX1500 requires batteries to operate your furnace and retain its
programming in memory and to light the display. Replace the batteries when the
REPLACE indicator appears in the display or at least once a year.
TECHNICAL SERVICE
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
http://www.luxproducts.com. Our web site offers you answers to the most common technical
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 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.
REPLACE
ELECT
GAS
RL1
SW1
C/F
5/2 MIN
ON/OFF
24/12H
Heat Selector
Battery
Compartment
N O T E
When replacing batteries, you have approximately 1
minute before programs are lost.
TYPICAL SINGLE-STAGE
HEAT PUMP WIRING
Figure 12
110
G
Y
W RH
B
O
RC
COMP
FAN
24 VAC HEAT
TRANSFORMER
CHG.
OVER
ADD
JUMPER
BETWEEN
Y & W
ALT.
110
TYPICAL COOLING AND
HEATING SYSTEM
(5-WIRE)
FAN
COOL
COMP
GAS
VALVE
24 VAC HEAT
TRANSFORMER
110
Figure 11
24 VAC COOL
TRANSFORMER
REMOVE
JUMPER
BETWEEN
RH & RC
G
Y
W RH
RC
O
B
TYPICAL COOLING AND
HEATING SYSTEM
(4-WIRE)
Figure 10
110
GAS
VALVE
COOL
COMP
FAN
24 VAC HEAT
TRANSFORMER
G
Y
W RH
RC
O
B
TYPICAL HOOKUP FOR 3-WIRE
HEAT SYSTEM IF THIRD
WIRE IS FAN WIRE
Figure 9
GAS
VALVE
110
FAN
24 VAC
TRANSFORMER
G
Y
W RH
RC
O
B
TYPICAL HOOKUP FOR 2-WIRE
24V HEATING SYSTEM AND
MILLIVOLT SYSTEM
Figure 8
GAS
VALVE
110
24 VAC
TRANSFORMER
OR
THERMOPILE
G
Y
W RH
RC
O
B
WARNING:
Use Energizer
®
or DURACELL
®
Alkaline Batteries Only.
REPLACE BATTERIES WHEN
INDICATOR APPEARS
OR AT LEAST
ONCE A YEAR.
