Instruction/ maintenance manual of the product P621U Lux Products
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C AUTIONS AND W ARNINGS . . . . . . . . . . 2 SY STEM COMP A TIBILITY . . . . . . . . . . . . 3 FEA TURES . . . . . . . . . . . . . . . . . . . . . . . 4 TOOLS Y OU MA Y NEED . . . . . . . . . . . . . . 4 MOUNTING LOC A TION . . . . . . . . . . . . . .
• This thermostat requires ba tteries to operate and failure or sub-standard performance of the batteries may impair or prevent the correct opera tion of the thermostat. Use Duracell ® or Energizer ® alkaline batteries ONL Y for all LUXPRO thermostats requiring ba tteries.
SETBACK HOLD SET RUN DA Y/TIME TEMP PROG AIR FIL TER TEMPERA TURE HEA T OFF COOL FA N AU TO ON EMER NEXT 74 F ˚ 72 F ˚ 5 : 36 P HEA T T U D AY S ET FA N 40 %L EFT F IL TER LCD Display Screen P621U UP / DOWN Buttons Set Slide Switch F an Mode Switch System Mode Switch The electrical rating for this thermosta t is 1.
• 1 or 2-Heat / 1-Cool, 5/1/1-day programming • Universal Compatibility for all system types • W eekdays, Sa turday , and Sunday can be programmed separa tely • Exc lusive LUX ® Speed Slide T.
On replacement installations, mount the new thermosta t in place of the old one unless the conditions listed below suggest otherwise. On new installa tions, please follow these general guidelines: 1. Mount the thermostat on an inside wall, about 5 ft.
1. Strip wire insulation leaving only 3/8 in. (9.5mm) bare wire ends, and c lean off any corrosion present. 2. F ill the wall opening with non-combustible insulation to prevent drafts from affecting the thermostat’ s normal opera tion. 3. Separate new thermostat housing using your thumb and index finger .
WIRING DIAGRAM NO TES: (Important, please read all notes before connecting wires) • If the information provided in the following wiring dia grams does not c learly represent or match your system, please refer to the “TECHNICAL ASSIST ANCE” section of this manual, and contact us before removing an y of your existing thermostat wiring.
8 #1 CONVENTIONAL: HEA TING ............................................................9 1-ST AGE OR 2-ST AGE 2, 3, 4, 5 WIRES #2 CONVENTIONAL: HEA TING ..........................................................10 3-WIRE ZONE V AL VE 3, 4 WIRES #3 CONVENTIONAL: COOLING .
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRA Y TERMINAL LETTERS ARE BRAND SPECIFIC W1 4 W X F G B* W2 RH V R W1 A W2 O B C G Y RC RH 1-ST AGE OR 2-ST AGE, HEA TING ONL Y (INCLUDING MILLIVOL T) (2.
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRA Y TERMINAL LETTERS ARE BRAND SPECIFIC X B* C RH V R W1 4 W A W1 A W2 O B C G Y RC RH HOT WA TER HEA TING ONL Y (WITH A 3-WIRE ZONE V AL VE) Factory RH.
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRA Y TERMINAL LETTERS ARE BRAND SPECIFIC X F G Y1 6 Y B* RC V R W1 A W2 O B C G Y RC RH 1-ST AGE, COOLING ONL Y Factory RH-RC Jumper Wire Installed #3 C .
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRA Y TERMINAL LETTERS ARE BRAND SPECIFIC RH RC V R Y1 6 Y F G X W1 4 W B* W1 A W2 C G O BY RC RH CONVENTIONAL (NON HEA T PUMP) 1-ST AGE HEA TING AND 1-ST.
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRA Y TERMINAL LETTERS ARE BRAND SPECIFIC W2 RH RC V R Y1 6 Y F G X W1 4 W B* W1 A W2 C G O BY RC RH CONVENTIONAL (NON HEA T PUMP) 2-ST AGE HEA TING AND 1.
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 W2 O B C G Y RC RH CONVENTIONAL (NON HEA T PUMP) 1-ST AGE HEA TING A.
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRA Y TERMINAL LETTERS ARE BRAND SPECIFIC O X F G Y1 6 Y B* RC V R W1 A W2 O B C G Y RC RH SINGLE-ST AGE HEA T PUMP SYSTEM WITH NO AUX OR EMERGENCY HEA T .
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRA Y TERMINAL LETTERS ARE BRAND SPECIFIC CUSTOMER INST ALLED Y -W1 Jumper Wire X B* C W3 W W2 O F G Y1 6 Y RC V R W1 A W2 O B C G Y RC RH 2-HEA T / 1-COO.
On the thermostat’ s circuit board, there is a ro w of DIP switches, labeled #1 through #8. The position of these s witches will change how the thermosta t operates, and also ho w information is conveyed to you on the LCD display screen.
may be more convenient if you are typically home during the day , and only need the set temperature to be different while you are sleeping. SWITCH #4 (SC ALE): [OFF/DOWN = F , default] All temperature values are displayed using the F ahrenheit scale. [ON/UP = C] This setting displays all temperature values using the Celsius scale.
GAS / ELEC SLIDE SWITCH (F AN OPERA TION): This switch is a physical component by itself on the circuit board, and is much larger than the DIP switches listed above. [DOWN = GAS, default] This setting lets the heating system control the blo wer fan automatically by itself.
thermostat’ s “G” wire terminal, to control a blower fan. The Fan Mode switch has no effect in systems that do not ha ve a blower fan (such as a hot water radiator system). MUL TI-FUNCTION, SET SLIDE SWITCH: This s witch provides an easy way to quickly access the most commonly used thermostat settings.
NEXT BUTTON: This button is mostly used while setting items such as software options, and tempera ture program periods. When there are several items on the screen that can be changed, usually one of them is flashing indica ting that it can be adjusted.
outdoor temperatures are too lo w to support efficient operation, but it could also prevent damage to the hea t pump if outside temperatures are below the manufacturer’ s recommendations.
By default, this thermosta t has 4 separate program periods for both Hea t and Cool mode, they are: MORN, DA Y , EVE, and NITE. Each period ends a t the start time of the following period. The hea t programs are set in HEA T mode, and the cool programs are set in COOL mode.
TEMPERA TURE SWING AND OFFSET SETTING: A thermosta t works by turning your heating or cooling system on and off whenever the room tempera ture varies from the desired set-point temperature. The amount of this varia tion is called the swing. Generally your system should cyc le on about 3 to 6 times per hour .
70˚F Set T emperature 71 DEGREES (F) ** = Only applies if a second heat stage is present 70 69 68 67 66 65 S wing Setting= #2 (+/- 0.5˚F) Cut-In / C ut-Out (1 st Stage) (2 nd Stage) ** Cut-In / C ut.
TEMPERA TURE C ALIBRA TION: The internal tempera ture sensor in this thermostat is accurately calibra ted at the factor y , and in most cases altera tions to this setting should not be needed.
desired set temperature tha t will be used for the Setback duration. Just like the previous step, you can either wait for the screen to advance on its o wn, or press the NEXT button to advance and return to the Normal Run screen. TO CANCEL A SETBACK: While in the Normal Run screen, press and hold the SETBACK button for at least 2 seconds.
Press the NEXT button to accept the setting. If the code you tried was not correct, the thermosta t will exit and return to the Normal Run screen with no changes made. If the entered code is correct, the screen will add the word “SET” and display the current cool set temperature limit.
GRAPHIC AL AIR FIL TER MONITOR: In most systems that use a blo wer fan and air ducts, there is an air filter tha t is either replaceable or requires c leaning.
HARDW ARE RESET : The Hardware Reset button (labeled “HW RST”) is a small round push button that is loca ted towards the right side if the circuit board, just belo w the batter y holder .
This thermostat is po wered by two “AA ” Alkaline batteries. The ba tteries should be replaced A T LEAST once per year to ensure reliable opera tion (or sooner , if the “LOW BA TT” icon a ppears at the top of the display screen). The batteries are located on the back of the thermosta t, a t the top of the circuit board.
If this unit fails because of defects in materials or workmanship within three years of the date of original purchase, LUX will, a t its option, repair or replace it. This warranty does not cover damage by accident, misuse, or failure to follo w installation instructions.
Mt. Laurel, New Jersey 08054, USA http://www .luxproproducts.com 856-234-8803 33 SETBACK HOLD 74 F ˚ 72 F ˚ 5 : 36 P HEA T T U D AY S ET FA N 40 %L EFT F IL TER.
An important point after buying a device Lux Products P621U (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Lux Products P621U yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Lux Products P621U - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Lux Products P621U you will learn all the available features of the product, as well as information on its operation. The information that you get Lux Products P621U will certainly help you make a decision on the purchase.
If you already are a holder of Lux Products P621U, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Lux Products P621U.
However, one of the most important roles played by the user manual is to help in solving problems with Lux Products P621U. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Lux Products P621U along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
