Lux PSP721U - Manual

5 • Your thermostat is a precision electronic instrument; please handle it with care to avoid damage. 5. REMOVE OLD THERMOSTAT 1. Turn OFF the electricity to all heating and cooling components. Do not turn theelectricity back on until all work iscompleted. 2. Remove the cover and front portion of yo...

8 RC G RH Y W2 W1 A OB C FA N HEA TER SY STEM XFMR TYPICAL 24-VOL T , 2 OR 3 WIRE, CONVENTIONAL, 1-ST AGE, HEA TING ONL Y SYSTEMS (INCLUDING MILLIVOL T) G F RH R V C W1 W H 4 Factor y RH-RC Jumper Wire Installed O P T I O N A L #1

9 RC G RH Y W2 W1 A OB C 3-WIRE HYDRONIC ZO N E V A LV E SY STEM XFMR TYPICAL 24-VOL T , CONVENTIONAL, 1-ST AGE, HOT W A TER HEA T ONL Y SYSTEMS WITH A 3-WIRE ZONE V A L V E A 6 RH R V 3 Y W1 W H 4 C Factor y RH-RC Jumper Wire Installed O P T I O N A L #2

10 RC G RH Y W2 W1 A OB C FA N A/C UNIT SY STEM XFMR TYPICAL 24-VOL T , 3 WIRE, CONVENTIONAL, 1-ST AGE COOLING ONL Y SYSTEMS RC R 5 G F Y C* 6 C Factor y RH-RC Jumper Wire Installed O P T I O N A L #3

11 RC G RH Y W2 W1 A OB C FA N HEA TER SY STEM XFMR TYPICAL 24V , 4 WIRE, CONVENTIONAL HEA TING AND COOLING SYSTEMS WITH 1 ST AGE HEA T AND 1 ST AGE COOL A/C UNIT RH R V G F Y C* 6 W1 W H 4 C Factor y RH-RC Jumper Wire Installed O P T I O N A L #4

13 RC G RH Y W2 W1 A OB C TYPICAL 24V , 4 WIRE, HEA T PUMP SYSTEMS WITH 1 ST AGE HEA T AND 1 ST AGE COOL FA N SY STEM XFMR HEA T PUMP UNIT CHANGE- OV E R VA LV E ** Use either “O” or “B” T e rminal, Never Both RC R 5 G F Y C* 6 O B C Factor y Supplied RH-RC Jumper Wire Installed Customer Supplied Ju...

16 8. HARDWARE SETUP OPTIONS NOTE: All of the settings, options, and components listed in thefollowing section are located on the rear of the thermostat,on the circuit board. GAS/ELEC. FAN OPERATION This is a plastic jumper cap, which islabeled as JP2. This jumper must remaininstalled, and can be in...

18 [4] SCALE This setting determines how the thermostat displays alltemperatures on the screen. Switch position OFF is F°, andON is C°. [5] TIME This setting determines how the thermostat displays theclock and all other time values on the screen. Switchposition OFF is 12 HR (US Standard), and ON is ...

19 NOTE: When you are finished per forming your installation and setupoptions, please remove the thin plastic film that is protectingthe LCD display screen on the front of the thermostat. Thisplastic may or may not be present, and is evident by theappearance of fake digits appearing on the display s...

20 needed. With the Fan switch in the ON position, the fan willoperate even when the Temperature Mode switch is in theOFF position to provide air circulation only. When the fan isrunning, the word “FAN” is displayed in the temperatureportion of the display screen. NOTE: The Fan Mode switch only work...

24 AIR FILTER MONITORIn systems that have a blower fan and air ducts, this featureis to assist you with proper maintenance and periodicreplacement of the filter located in your heating or coolingsystem. The Air Filter Monitor counts the duration of filterusage that has occurred, since the last time ...

30 will appear on the screen, with one of the days flashingabove. Using the UP/DOWN buttons, select the day that youwant to copy from. Press the NEXT button once. Your“copy from” day should be on steady with the following dayflashing. Use the UP/DOWN buttons to select the day thatyou would like to c...

31 swinging the body towards you, up and away from the base.Remove the used batteries from the batter y tray and discardappropriately. Install two new Energizer ® or DURACELL ® “AA” size alkaline batteries into the batter y tray. Obser ve the polarity markingsshown in the batter y compartment to ens...