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Lux Products P722U - page 1
SYSTEM COMP A TIBILITY . . . . . . . . . 2 F E AT U R E S . . . . . . . . . . . . . . . . . . . 3 T O O L S Y O U M AY N E E D . . . . . . . . . . . 3 MOUNTING LOCA TION . . . . . . . . . . . 4 REMOVE OLD THERMOST A T . . . . . . . 4 INST ALL THERMOST A T BASE . . . . . . . 5 WIRING INFORMA TION . . . . . . . . . . . 5 CAUTIONS AND WARNINGS . . . . ...
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Lux Products P722U - page 2
S ETBACK HO LD S E T R U N D AY/ T IM E T EM P P RO G S PE C P RO G F ILT / ENR GY T E MP E RAT U RE H E AT O FF C OO L F A N A U TO O N C O PY / E ME R N EX T S ET HEA T F AN F ˚ 5 : 3 6 P F ˚ LCD Display Screen P722U UP / DOWN Buttons Set Slide Switch Fan Mode Switch System Mode Switch The electrical rating for this thermostat is 1.5 Amps per t ...
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Lux Products P722U - page 3
• 1 or 2-Heat / 1 or 2-Cool, 7-day programming • Universal Compatibility for all system types • Each day of the week can be programmed separately • Exclusive LUX ® Speed Slide T M for easy programming • User -selectable periods per day (2 or 4) • User -selectable programmable or non-programmable operation • LuxLight ® EL (Electro-Lu ...
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Lux Products P722U - page 4
On replacement installations, mount the new thermostat in place of the old one unless the conditions listed below suggest otherwise. On new installations, please follow these general guidelines: 1. Mount the thermostat on an inside wall, about 5 ft. (1.5m) above the floor . 2. Do not locate the thermostat where air circulation is poor such as in a ...
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Lux Products P722U - page 5
1. Strip wire insulation leaving only 3/8 in. (9.5mm) bare wire ends, and clean off any corrosion present. 2. Fill the wall opening with non-combustible insulation to prevent drafts from affecting the thermostat’ s normal operation. 3. Route the wires through the opening in the new thermostat base plate, and hold the base against the wall. T ry t ...
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Lux Products P722U - page 6
• 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 ONL Y for all LUX thermostats requiring batteries. BE SURE TO CHANGE THE BA TTERIES A T LEAST ONCE A YEAR, or whenever you see the ...
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Lux Products P722U - page 7
WIRING DIAGRAM NOTES: (Important, please read all notes before connect ing wires) • If the information provided in the following wiring diagrams does not clearly represent or match your system, please refer to the “TECHNICAL ASSIST ANCE” section of this manual, and contact us b e f o r e removing any of your existing thermostat wiring. • Al ...
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Lux Products P722U - page 8
8 # 1 C O N V E N T I O N A L : H E AT I N G .............................................8 1 - S T A G E O R 2 - S TA G E 2, 3, 4, 5 WIRES # 2 C O N V E N T I O N A L : H E AT I N G .............................................9 3 - W I R E Z O N E V A LV E 3 , 4 W I R E S #3 CONVENTIONAL: COOLING ............................................ 1 0 1 ...
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Lux Products P722U - page 9
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRA Y TERMINAL LETTERS ARE BRAND SPECIFIC X F G W1 4 W B* W2 RH V R W1 A Y2 O B W2 C G Y1 RC RH 1-ST AGE OR 2-STAGE, HEA TING ONL Y (INCLUDING MILLIVOL T) (2-WIRE HEA T USE “RH” & “W1”) Factory RH-RC Jumper Wire Installed #1 2, 3, 4, 5 WIRES C H EATE R S T AG E 1 S T AG E 2 FAN SYSTEM 24V TR ...
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Lux Products P722U - page 10
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRA Y TERMINAL LETTERS ARE BRAND SPECIFIC X W1 4 W B* A RH V R W1 A Y2 O B W2 C G Y1 RC RH HOT WA TER HEA TING ONL Y (WITH A 3-WIRE ZONE V AL VE) Factory RH-RC Jumper Wire Installed #2 C SYSTEM 24V TRANSFORMER SYSTEM COMMON OPEN = Heat On CLOSE = Heat Off 3 -W I RE ZO N E VA LVE O PE N CL OS E 3, 4 WIRE ...
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Lux Products P722U - page 11
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRA Y TERMINAL LETTERS ARE BRAND SPECIFIC X F G Y1 6 Y B* Y2 RC V R W1 A Y2 O B W2 C G Y1 RC RH 1-ST AGE OR 2-STAGE, COOLING ONL Y Factory RH-RC Jumper Wire Installed #3 C A IR CO ND I TI O N ER S T AG E 1 S T AG E 2 FAN SYSTEM 24V TRANSFORMER SYSTEM COMMON 3, 4, 5 WIRES O P T I O N A L 11 ...
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Lux Products P722U - page 12
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRA Y TERMINAL LETTERS ARE BRAND SPECIFIC RH RC V R Y1 6 Y X F G W1 4 W B* W1 A Y2 O B W2 C G Y1 RC RH CONVENTIONAL (NON HEA T PUMP) 1-ST AGE HEATING AND 1-ST AGE COOLING Factory RH-RC Jumper Wire Installed #4 C FAN SYSTEM 24V TRANSFORMER SYSTEM COMMON H EATE R AIR CONDITIONER 4, 5 WIRES O P T I O N A L ...
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Lux Products P722U - page 13
Y1 6 Y X F G W1 4 W B* W2 RH V R Y2 W1 A Y2 O B W2 C G Y1 RC RH CONVENTIONAL (NON HEA T PUMP) 2-ST AGE HEATING AND 2-ST AGE COOLING Factory RH-RC Jumper Wire Installed #5 C H EATE R S T AG E 1 S T AG E 2 FAN SYSTEM 24V TRANSFORMER SYSTEM COMMON A IR CO ND I TI O N ER S T AG E 1 S T AG E 2 4, 5, 6, 7 WIRES NOTE: THE BLACK TERMINAL LETTERS ARE TYPICA ...
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Lux Products P722U - page 14
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRA Y TERMINAL LETTERS ARE BRAND SPECIFIC X B* C R V RH R V RC Y1 6 Y F G W1 4 W W1 A Y2 O B W2 C G Y1 RC RH CONVENTIONAL (NON HEA T PUMP) 1-STAGE HEA TING AND 1-ST AGE COOLING WITH TWO SEPARA TE 24V TRANSFORMERS Factory RH-RC Jumper Wire REMOVED #6 FAN H E A T 2 4 V T RA N SF O R ME R COOL 24V T RA N S ...
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Lux Products P722U - page 15
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRA Y TERMINAL LETTERS ARE BRAND SPECIFIC RC RH V R Y1 6 Y F G O X B* W1 A Y2 O B W2 C G Y1 RC RH SINGLE-ST AGE HEAT PUMP SYSTEM WITH NO AUX OR EMERGENCY HEA T Factory RH-RC Jumper Wire Installed CUSTOMER INST ALLED Y1-W1 Jumper Wire #7 C FAN SYSTEM 24V TRANSFORMER R EV E RS I N G VALVE SYSTEM COMMON HE ...
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Lux Products P722U - page 16
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRA Y TERMINAL LETTERS ARE BRAND SPECIFIC RC RH V R Y1 6 Y X B* C W3 W1 W W2 F G O W1 A Y2 O B W2 C G Y1 RC RH 2-HEA T / 1-COOL, HEAT PUMP SYSTEM WITH AUX AND EMERGENCY HEA T #8 FAN SYSTEM 24V TRANSFORMER R EV E RS I N G VALVE AU X / EM E RG . H EAT SYSTEM COMMON HEA T PUMP 5, 6 WIRES O P T I O N A L ** ...
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Lux Products P722U - page 17
On the thermostat’ s circuit board, there is a row of DIP switches, labeled #1 through #9. The position of these switches will change how the thermostat operates, and also how information is conveyed to you on the LCD display screen. If you make any changes to these options, the changes are not recognized unless you either: change the position of ...
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Lux Products P722U - page 18
SWITCH #3 (PERIODS): [OFF/DOWN = 4, default] The thermostat uses four temperature program periods in both heating and cooling (MORN, DA Y , EVE, and NITE). Each period has a separate start time and a set temperature. [ON/UP = 2] The thermostat operates in the same manner as above, however there are only two temperature program periods for heating a ...
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Lux Products P722U - page 19
SWITCH #8 (BA TTERY MONITOR): [OFF/DOWN = ON, default] This setting, regularly monitors the battery level, and shows “LOW BA T” on the screen if the batteries need to be replaced. Use this setting at all times when batteries are present in the thermostat. [ON/UP = OFF] This setting only applies if you are NOT physically using batteries in the t ...
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Lux Products P722U - page 20
NOTE: The Fan Mode switch only works if your system provides a wire for the thermostat’ s “G” wire terminal, to control a blower fan. The Fan Mode switch has no effect in systems that do not have a blower fan (such as a hot water radiator system). MUL TI-FUNCTION, SET SLIDE SWITCH: This switch provides an easy way to quickly access the most c ...
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Lux Products P722U - page 21
S E T D AY A N D T I M E : Place the Set Slide Switch into the DA Y/TIME position. With the day flashing, press UP or DOWN to set the day of the week. Press NEXT and the clock time will start flashing. Use UP or DOWN to set the time, making sure the AM/PM indication is correct. Holding the UP or DOWN buttons will make the clock digits scroll rapidl ...
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Lux Products P722U - page 22
pump has different operating characteristics, you should refer to your heat pump literature to determine when to disable the heat pump and run in Emergency Heat mode. LCD DISPLA Y BACKLIGHT : The display screen is lighted to assist viewing at nighttime, or in locations with low light levels. A press of any button on the front panel will light the d ...
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Lux Products P722U - page 23
By default, this thermostat has 4 separate program periods for both Heat and Cool mode, they are: MORN, DA Y , EVE, and NITE. Each period ends at the start time of the following period. The heat programs are set in HEA T mode, and the cool programs are set in COOL mode. NOTE: If the thermostat is configured to use only 2 periods per day instead of ...
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Lux Products P722U - page 24
remaining days, one after the other (specific days may be skipped by pressing the UP button to advance past them when they are flashing in the “copy to” location). T o exit the Copy feature, and return to the regular temperature program screen, press and hold the NEXT button for more than 2 seconds. Return the Set Slide Switch to the RUN positi ...
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Lux Products P722U - page 25
for heat pump configurations). An Offset value from 1 to 9 degrees will determine the number of degrees from the set point that will be required for the second heating stage to turn on. This setting can be used to conserve energy in situations where the second heating stage is more costly to operate when compared to the first stage. 70˚F Set T emp ...
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Lux Products P722U - page 26
TEMPERA TURE CALIBRA TION: The internal temperature sensor in this thermostat is accurately calibrated at the factory , and in most cases alterations to this setting should not be needed. The T emperature Calibration feature allows you to manually offset the measured temperature by as much as plus or minus 5°F (3°C) degrees from its original valu ...
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Lux Products P722U - page 27
the screen, you can either wait for the screen to advance forward on its own, or press the NEXT button (behind the door) one time to jump ahead rapidly . Now use the UP/DOWN buttons to select your desired set temperature that will be used for the Setback duration. Just like the previous step, you can either wait for the screen to advance on its own ...
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Lux Products P722U - page 28
NOTE: When activating the Special Program feature, button presses need to be performed in a timely manner , as the thermostat will timeout and automatically exit the setting screen after approximately 10 seconds without a button press. TO ACTIV ATE THE S PECIAL PROGRAM: Press and hold the HOLD button for at least 5 seconds. The words “S-PROG” a ...
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Lux Products P722U - page 29
will add the word “SET” and display the current heat set temperature limit. Use the UP/DOWN buttons to adjust the maximum heat set temperature value. Press the NEXT button to accept the setting and return to the Normal Run screen in heat mode. TO SET THE COOL LIMIT STOP: Place the System Mode switch in the OFF position, and the Set Slide switch ...
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Lux Products P722U - page 30
TO LOCK THE KEYP AD: Start with the System Mode switch in either the HEA T or COOL positions, and the Set Slide switch in the RUN position. Press and hold the NEXT button for 5 seconds, and the words “LOCK CODE” then “SET CODE” will appear at the top of the screen. Select a 4-digit code that you would like to use for locking the thermostat. ...
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Lux Products P722U - page 31
of the display screen. Press either of the UP/DOWN buttons to select the desired filter duration (in days) from the following choices: OFF , 30, 60, 90, 120, 180, or 365. If the filter duration value is set to “OFF”, then the Air Filter Monitor will be completely disabled. TO RESET THE FIL TER USAGE COUNTER: Move the Set Slide switch to the “ ...
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Lux Products P722U - page 32
along with the word “COOL” and the amount of cooling system runtime (displayed as “HH:MM”, for hours and minutes). Use the UP/DOWN buttons to cycle between T oday’ s Usage, Y esterday’ s Usage, and the T otal Cumulative Usage. NOTE: For the T otal Cumulative Usage, the timer will record up to a maximum of 99 hours and 59 minutes, then t ...
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Lux Products P722U - page 33
COMPRESSOR PROTECTION BYPASS: This optional f eature permits the installer or service technician to temporarily disable the built in compressor protection delays. This is most useful for diagnosing and testing the heating and cooling systems after installation is complete, and should not be used during normal operation. T o activate this feature, p ...
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Lux Products P722U - page 34
you troubleshooting guides, answers to the most common technical questions, and also permits you to email your questions to our technical support staff at your convenience. If this unit fails because of defects in materials or workmanship within three years of the date of original purchase, LUX will, at its opt ion, repair or replace it. This warra ...
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Lux Products P722U - page 35
Mt. Laurel, New Jersey 08054, USA http://www .luxproproducts.com 856-234-8803 35 SETBAC K HOLD S ET HE A T F AN F ˚ 5 : 3 6 P F ˚ ...
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