Lux Products TX9100U QUICK START WIRING GUIDE, Wiring Diagram Notes, Cautions And Warnings

TX9100U QUICK START WIRING GUIDE

53000

WIRING DIAGRAM NOTES: CAUTIONS AND WARNINGS:

•Label every wire terminal designation on your existing thermostat wiring before removing your old thermostat.

•Ignore the color of the wires since they may not comply with any standard. Please connect wires using the terminal letter designations.

•WARNING: All wiring must conform to the local codes and ordinances that are in your particular location.

•If the information provided in the following wiring diagrams does not clearly represent or match your system, please refer to the full version of the manual which can be obtained from our website, or contact us before removing your existing thermostat wires.

•All of the dashed wires shown in the wiring diagrams are either optional, or their usage depends upon your specific system type or brand. For example: Diagram #1 shows the fan wire as optional. If your system does not have a fan, than this terminal will not be used.

•The optional “C” terminal is used for powering the thermostat by the 24-volt system, using the System Common wire. This can be used alone, or in addition to installing batteries as a backup. NOTE: connecting the System Common wire to the thermostat is not necessary for heating and cooling to function properly.

•If your old thermostat has both a “Y” and “C” wire both present, then “C” is most likely a System Common wire.

•For Heat Pump systems, you will use either the “O” terminal or the “B” terminal on this thermostat, but not both. If your old thermostat has both an “O” and a “B” wire present, then “B” is likely a System Common wire and may be connected to the “C” terminal. Connecting a System Common wire to this thermostat’s “B” terminal may damage the thermostat, and also your heating and cooling system.

•Some Heat Pump systems have a wire for AUX electric heat (usually W2), and also a separate wire for Emergency electric heat (usually E). This thermostat uses the W2 terminal for both AUX and Emergency Heat. Tape off your “E” wire, and confirm that all components function without it.

•The thermostat requires batteries to operate and failure or sub- standard performance of the batteries may impair or prevent the correct operation of the thermostat. Use Duracell or Energizer alkaline batteries ONLY for all Lux thermostats requiring batteries. BE SURE TO CHANGE THE BATTERIES AT LEAST ONCE A YEAR. Failure to follow these battery instructions could result in property damage and/or personal injury.

•The electrical rating for this thermostat is 1.5 Amps per terminal, with a maximum total load of 3.0A for all terminals combined.

•The thermostat contains parts which may wear out through use and are susceptible to failure if over-loaded or used in a manner other than as indicated in the documentation.

•Check unoccupied residences regularly to ensure that all systems are operating properly.

•Check any heating/air-conditioning system including this product before operation and at regular intervals.

•Electrical interference, static electricity, failure or substandard performance of batteries, wiring defects in the installation and/or characteristics of the connected HVAC devices may prevent the system from regulating heating and cooling as anticipated.

•The thermostat is a sensitive device and dropping the product can cause damage to critical components. If the product is dropped or shaken violently during transport or installation then it should be replaced immediately.

•Persons with physical or mental limitations may not be able to promptly respond to a malfunction of the heating/air-conditioning system.

•All residents should be made aware of the potential in any system for malfunctions that could cause continuous heating or cooling and should be familiar with the operation and location of the heating/cooling appliance on/off switch.

•Read the instruction manual completely before installing the thermostat. Additional information is available at our website luxproducts.com. You should consult a qualified HVAC technician or an electrician if you do not fully understand the installation instructions.

**NOTE: The Black Terminal Letters Shown Below Are Standard, The Gray Terminal Letters Are Brand-Specific

4, 5 WIRES

1-HEAT AND 1-COOL

(NON Heat-Pump)

#4

2, 3, 4, 5 WIRES

HEATING ONLY

(2-WIRES = USE “RH” & “W1”)

#1

Factory RH-RC Jumper Wire Installed

Factory RH-RC Jumper Wire Installed

G

Y1

RC

RH

W1

A

Y2

O

B

W2

C

G

Y1

RC

RH

W1

A

Y2

O

B

W2

C

FAN WIRE

G

Y

R

W

C

F

Y1

RH

W1

X

MAY NOT BE

G

R

W

W2

C

PRESENT IN

F

RH

W1

X

6

RC

4

B*

ALL SYSTEMS

V

4

B*

V

O

O

P

P

T

T

I

I

SYSTEM COMMON

O

O

N

SYSTEM COMMON

N

A

A

STAGE

STAGE

L

L

FAN

SYSTEM 24V

1

2

TRANSFORMER

AIR

SYSTEM 24V

HEATER

FAN

HEATER

CONDITIONER

TRANSFORMER

4, 5, 6, 7 WIRES

2-HEAT AND 2-COOL

(NON Heat-Pump)

#5

5, 6 WIRES

HEAT PUMP System (WITH EMERGENCY HEAT)

#8

Factory RH-RC Jumper Wire Installed

CUSTOMER INSTALLED Y1-W1 Jumper Wire

** Use “O” or “B” Terminals,

G

Y1

RC

RH

W1

A

Y2

O

B

W2

C

Factory RH-RC Jumper Wire Installed

Never Both

G

Y1

RC

RH

W1

A

Y2

O

B

W2

C

G

Y

R

W

Y2

W2

C

G

Y

R

O

W2

C

F

Y1

RH

W1

X

F

Y1

RC

W3

X

6

V

4

B*

6

RH

W1

B*

O

V

W

O

P

P

T

T

I

I

O

O

SYSTEM COMMON

N

SYSTEM COMMON

N

A

A

L

L

FAN

SYSTEM 24V

STAGE

STAGE

STAGE

STAGE

1

2

1

2

FAN

HEAT PUMP

SYSTEM 24V

REVERSING

AUX / EMERG.

TRANSFORMER

AIR CONDITIONER

HEATER

TRANSFORMER

VALVE

HEAT