Lux Products PH521 Thermostat User Manual

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KEYPAD LOCKOUT: You can lock the front panel buttons to prevent unauthorized tampering of your  
thermostat settings. The following examples use the default lock code of “0000”. If you have altered  
the lock code to use your own code, use that in place of “0000” in the following instructions.  
THERMOSTAT FRONT PANEL:  
INSTALLATION AND OPERATING INSTRUCTIONS  
EMER / HEAT / OFF / COOL, SYSTEM MODE SWITCH: Set this switch to HEAT to control your heating  
system, and COOL to control your cooling system. To disable the heat pump unit and operate only on  
your Auxiliary/Emergency heating source, use the EMER position. The OFF position will disable both the  
heating and cooling units.  
NOTE: These keypad lock instructions need to be performed in a timely manner, as the thermostat will  
timeout and automatically exit the keypad lock screen and return to the normal run screen after 12  
seconds without a button press.  
PH521 5/2-Day Programmable  
Heat Pump Thermostat  
AUTO / ON, FAN SWITCH: When this switch is in AUTO, the blower fan will automatically cycle on and  
off by itself when heating or cooling is running. When in the ON position, the blower fan will run  
constantly with or without a demand for heating or cooling, even in OFF mode.  
52125  
TO LOCK THE KEYPAD: Place the Set Slide Switch in the RUN position, and press NEXT for at least 6  
seconds. Enter the correct code by using UP or DOWN to change the flashing digit, and use NEXT to  
cycle through which digit is flashing. Press NEXT for at least 4 seconds. A padlock should appear on  
the screen to confirm that the thermostat is now locked.  
Lux Products Corporation  
-
Mt. Laurel, New Jersey 08054  
-
MULTI-FUNCTION, SET SLIDE SWITCH: Unless other settings are being adjusted, this switch should  
always remain in the RUN position for the thermostat to control temperature. When this switch is in  
the DAY/TIME position, the day and clock can be changed. When this switch is in the WEEKDAY or  
WEEKEND positions, the heating and cooling temperature program periods can be adjusted. NOTE: this  
switch is only used in “Program” mode. When the thermostat is used in “Manual” control mode, all  
four of the switch positions will act like the RUN position.  
WARNING: Use Energizer® or DURACELL® Alkaline Batteries Only.  
Energizer® is a registered trademark of Eveready Battery Company, Inc.  
DURACELL® is a registered trademark of The Gillette Company, Inc.  
TO UNLOCK THE KEYPAD: A press of any button will show “0000” on the screen. Enter the correct code  
by using UP or DOWN to change the flashing digit, and use NEXT to cycle through which digit is  
flashing. Press NEXT for at least 4 seconds. The padlock should disappear, and the thermostat should  
now be unlocked. If you try to unlock the thermostat by entering a code that is not correct, the display  
will flash “8888” on the screen.TO CHANGE THE LOCK CODE: First ensure that the thermostat is  
unlocked, and the Set Slide Switch is in the RUN position. Press NEXT for at least 6 seconds. When  
“0000” is displayed, release NEXT then press HOLD for at least 4 seconds until the word “SET” appears.  
Enter your new desired code by using UP or DOWN to change the flashing digit, and use NEXT to cycle  
through which digit is flashing. Press NEXT for at least 4 seconds until the word “SET” is no longer  
shown. Your new code has been accepted. You may either: press NEXT for at least 4 seconds to lock  
the thermostat using your new code, or let the screen timeout on its own after 12 seconds and return to  
the normal run screen.  
Thank you for your confidence in our product. To obtain the best results from your investment, please  
read these instructions and acquaint yourself with your purchase. Follow the installation procedures  
carefully, and save these instructions for future reference. This will save you time and minimize the  
chance of damaging either the thermostat or the systems that it controls. NOTE: These instructions may  
contain information beyond that required for your particular installation.  
RESET BUTTON: There is a small recessed push button located to the left of the DOWN button, which  
can be pressed with a pen/pencil, paper clip, or similar object. A single press of this button causes the  
LCD display screen to become fully populated, the heating/cooling load relay to cycle off, and performs  
an internal system check of the thermostat components. If your thermostat is acting in an erratic  
manner, pressing the Reset button may remedy this behavior. If your thermostat continues to act  
erratically, a Full Software Reset may be needed. This and other additional features that can be  
accessed using the same Reset button, which are explained in the ADVANCED FEATURES section of this  
manual.  
SYSTEM COMPATIBILITY:  
This thermostat can be used with most 24 volt: single-stage heat pumps, and 2-heat / 1-cool heat pump  
systems with auxiliary and/or Emergency heat. Second Stage Dual Fuel Systems Capable.  
IF YOU FORGET YOUR LOCK CODE: Place the Set Slide Switch in the RUN position, and perform a single  
press of the RESET button (located to the left of the DOWN button). The screen will change to become  
fully populated with all segments shown. After the screen returns to a normal display, enter the  
following four-button sequence, using a single press for each button: UP, UP, UP, DOWN. You should  
leave approximately one second between button presses. If the thermostat was already unlocked when  
you started this procedure, the screen will remain in the normal run display, and your lock code has  
been returned to the default of “0000”. If the thermostat was in a locked state when you started this  
procedure, you will see the Enter Unlock Code screen with “1000” shown due to the buttons you  
recently pressed. Press DOWN one time so that the display shows “0000”, and press NEXT for at least  
4 seconds. The padlock should disappear, and the thermostat should now be unlocked, and showing  
the normal run display. When you use this Reset Lock Code procedure, no changes will be made to  
other thermostat settings or options.  
This thermostat cannot be used to control: conventional heating and cooling systems, 2/3-wire zone  
valves, or 120/240 volt (line voltage) heating or cooling systems. Ask your dealer for other LUXPRO®  
thermostats to control those systems.  
THERMOSTAT BASIC OPERATION:  
SET DAY AND TIME: Place the Set Slide Switch into the DAY/TIME position. With the day flashing,  
press UP or DOWN to set the day of the week. Press NEXT and the clock will start flashing. Use UP or  
DOWN to set the time, making sure the AM/PM indication is correct. Holding UP or DOWN will make  
the clock digits scroll rapidly. Return the Set Slide Switch to RUN.  
TOOLS YOU MAY NEED:  
Screwdrivers, wire stripper / cutter, and possibly a drill with assorted bits (new installations only).  
HEATING AND COOLING: Basic operation of your heating or cooling system can be obtained with the Set  
Slide Switch in the RUN position and choosing either HEAT or COOL on the System Mode Switch. When  
the thermostat is first powered up, it will follow a default temperature routine that is preset from the  
factory (shown below).  
REMOVAL OF OLD THERMOSTAT:  
1. Turn OFF the electricity to all heating and cooling components. Do not turn the  
electricity back on until all work is completed.  
TEMPERATURE LIMIT STOPS: There are two independent set temperature stops: a maximum heat set  
temperature, and a minimum cool set temperature. Each of these temperature stops is user adjustable  
in one-degree increments. The heat limit stop prevents the set temperature from being adjusted higher  
than the heat limit setting. The cool limit stop prevents the set temperature from being adjusted lower  
than the cool limit setting.  
2. Remove the front portion of your old thermostat to expose the wiring connections.  
3. Write down the letters printed near each wire terminal that is used, and also the  
color of each wire that is connected to it. Self-adhesive wire labels are also  
enclosed.  
PERIOD  
HEAT MODE  
COOL MODE  
F
OF  
MORN 6:00 AM 70 °F (21 °C) 6:00 AM 78 °F (26 °C)  
DAY  
EVE  
8:00 AM 62 °F (17 °C) 8:00 AM 85 °F (29 °C)  
6:00 PM 70 °F (21 °C) 6:00 PM 78 °F (26 °C)  
4. Carefully remove the wires one at a time, and bend them in a manner so that they  
do not fall back inside the wall. Do not allow bare wire ends to touch each other.  
5. Loosen the mounting screws for the old thermostat and carefully remove it from the wall.  
NITE 10:00 PM 62 °F (17 °C) 10:00 PM 82 °F (28 °C)  
To set the heat and cool set temperature limit stops, always start with the System Mode switch in the  
OFF position, and the Set Slide switch in the RUN position. Press and hold the UP button while sliding  
the System Mode switch, either from OFF to HEAT (to adjust the maximum heat set temperature), or  
from OFF to COOL (to adjust the minimum cool set temperature). The words “SET”, and either “LIM  
HEAT” or “LIM COOL” will be displayed on the LCD screen while you are setting the heat or cool limits  
respectively. While in the adjustment mode for each of the temperature stops, use the UP and DOWN  
buttons to adjust the limit value, just as you would for adjusting the set temperature under normal  
operation. NOTE: If no buttons are pressed for 4 seconds, the thermostat will accept the limit value  
that was on the screen at that time, and return to the normal run screen for the current System Mode  
switch position. Once you have adjusted the Set Temperature Limit Stops, you should return to the  
adjustment mode again for both heat and cool to confirm your desired limit settings for both  
temperature modes.  
When the thermostat is in Heat mode, the word “HEAT” will be present on the screen. When the  
thermostat is calling for your heating system to run, the word “HEAT” will be flashing. If there is a  
large thermal demand present which is greater than the first stage of heating can accommodate, then a  
second stage of heating (“W2” terminal) will be activated, flashing the word “AUX” and “HEAT” on the  
display. When the thermostat is in Cool mode, the word “COOL” will be present on the screen. When  
the thermostat is calling for your cooling system to run, the word “COOL” will be flashing.  
THERMOSTAT MOUNTING LOCATION:  
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 corner, alcove, or behind a door  
that is normally left open.  
3. Do not locate the thermostat where unusual heating or cooling conditions may be present, such as:  
direct sunlight, above a lamp, television, or radiator, or on a wall next to an exterior door or window.  
4. Do not locate in a damp environment, as this can lead to corrosion that may shorten thermostat life.  
5. If painting or construction work is still ongoing, cover the thermostat completely or wait until this  
work is complete before installation.  
EMERGENCY HEAT: Moving the System Mode switch to the EMER position will activate Emergency Heat  
mode. While in Emergency Heat mode, the words “HEAT” and “AUX” will both be shown in the display  
screen. When Emergency Heat is currently running, the word “AUX” will flash on the screen.  
Emergency Heat mode will prevent the first stage of your heat pump system from turning on, and use  
only the “E” terminal as the primary heating source. This will not only prevent the heat pump from  
wasting energy if outdoor temperatures are too low to support efficient operation, but it could also  
prevent damage to the heat pump if outside temperatures are below the manufacturer’s  
recommendations. As every heat 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.  
COMPRESSOR PROTECTION BYPASS: This optional feature 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. To activate this feature: place the Set Slide Switch in the RUN position, and perform  
a single press of the RESET button (located to the left of the DOWN button). The screen will change to  
become fully populated with all segments shown. After the screen returns to a normal display, enter the  
following four-button sequence, using a single press for each button: UP, UP, DOWN, DOWN. You  
should leave approximately one second between button presses. The cooling terminal can now be  
activated one time without waiting for the delay, and once activated the thermostat will return to normal  
run mode with delays present. When you use this Compressor Protection Bypass procedure, no  
changes will be made to other thermostat settings or options.  
INSTALLATION OF NEW THERMOSTAT:  
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. Try to line up the screw holes from the prior thermostat, and install the mounting screws.  
4. If the previous holes cannot be used, hold the thermostat base against the wall so that it appears  
straight and level (position the base for best appearance) and mark for the new screw holes. Attach  
the base to the wall using the screws provided (use the supplied plastic anchors if needed when  
mounting to a soft material such as drywall).  
TEMPERATURE OVERRIDE: While in Program mode, the set temperature can be temporarily changed by  
pressing UP or DOWN. The set temperature will return to the programmed value stored in memory  
when the start time of the next upcoming program period is reached (MORN, DAY, EVE, NITE). While a  
Temporary Override is in effect, the word OVERRIDE will be shown in the display screen. An Override  
may be cancelled by moving the mode switch to OFF, then back to HEAT or COOL.  
FULL SOFTWARE RESET: This complete reset returns all heating and cooling temperature programs, and  
all user changeable software options, to their factory default values. It is recommended that you write  
down your current heating and cooling program values for reference prior to performing a software  
reset. To perform a software reset: move the System Mode switch in the OFF position, and the Set Slide  
switch to the RUN position. Perform a single press of the RESET button (located to the left of the  
DOWN button). The screen will change to become fully populated with all segments shown. After the  
screen returns to a normal display, enter the following four-button sequence, using a single press for  
each button: UP, DOWN, UP, DOWN. You should leave approximately one second between button  
presses. After the software reset steps have been performed, you will not notice anything different on  
the screen, and the thermostat will be ready for normal operation (you may wish to adjust the heating  
and cooling programs to suit your temperature preferences).  
MINIMUM RUN TIME: The thermostat has an internal time delay of 5 minutes between load-on and load-  
off activations to prevent heating or cooling system damage, which can occur from very frequent  
cycling. If heating or cooling does not turn on right away with a change in set temperature, please wait  
5 minutes and the system should resume normal operation.  
WIRING TERMINAL CONNECTIONS:  
TEMPERATURE HOLD: A Temperature Hold is used for maintaining a fixed set temperature. Once a Hold  
is initiated, the thermostat will maintain the set temperature indefinitely. A Hold may be used for days,  
weeks, or even months at a time. To enter Hold mode: press HOLD one time and the word Hold will  
appear in the display. To cancel a Hold, press HOLD one more time.  
1. When attaching the wires to the thermostat, please ensure that the bare wire ends are held ALL the  
way into the terminal block while the screw is being tightened.  
2. Securely tighten all of the electrical terminal screws, including any unused ones. Be careful not to  
over tighten the screws, they only need to be snug.  
STATIC NOTICE: This thermostat is protected against normal static electric discharges, however to  
minimize the risk of damaging the unit in extremely dry weather, please touch a grounded metal object  
(light switch) before touching your thermostat.  
** Complete heating and/or cooling system wiring can be found in the WIRE IDENTIFICATION AND  
WIRING SCHEMATICS section of this instruction sheet. The schematics shown provide component  
information for brand new installations or for unreferenced wires.  
BATTERY REPLACEMENT:  
LCD DISPLAY BACKLIGHT: The display screen has backlighting that will assist viewing at nighttime, or  
in locations with low light levels. A press of any button on the front panel will light the display for  
approximately 10 seconds. Any button presses that occur while the backlight is on, will reset the timer,  
causing the screen to remain illuminated for an additional 10 seconds.  
This thermostat is powered by two “AA” Alkaline batteries. The batteries should be replaced AT LEAST  
once per year (or sooner, if “LOW BAT” battery symbol appears in the lower left portion of the display  
screen). The batteries are located on the back of the circuit board, and can be accessed by pulling the  
front portion of the thermostat straight outwards and removing it from the wall. When installing new  
batteries, we recommend using only brand new Energizer® or DURACELL®, “AA” size alkaline batteries.  
Please observe the polarity markings shown in the battery compartment to ensure proper installation.  
When finished, line up the front of the thermostat to the base, and firmly press together to latch  
properly.  
SYSTEM CONFIGURATION AND SETUP OPTIONS:  
On the circuit board, there are hardware settings called “jumpers”. Each jumper  
has 3 metal pins, and a small black cap. The cap is moved to either the top two  
UP  
TEMPERATURE PROGRAMS:  
pins or the lower two pins. Changes to these options are recognized every time  
the EMER/HEAT/OFF/COOL mode switch is moved.  
This thermostat has 4 separate program periods for both Heat and Cool mode, they are: MORN, DAY,  
EVE, and NITE. Each period ends at the start time of the following period. The heat programs are set  
in HEAT mode, and the cool programs are set in COOL mode. NOTE: Emergency Heat mode uses the  
regular Heat mode temperature programs.  
JP1 (CTRL): [UP = Manual Operation] The thermostat operates manually, and  
only shows the room and set temperatures. In this mode, there are no  
temperature programs, days of the week, or clock times. [DOWN = Program  
TECHNICAL SUPPORT:  
DOWN  
WEEKDAY PROGRAMS: Move the Set Slide switch to WEEKDAY. You will be programming all five  
weekdays at the same time. Use UP or DOWN to adjust the start time for the MORN period, then press  
NEXT to advance. Use UP or DOWN to adjust the set temperature for the MORN period, then press  
NEXT to advance. Now adjust the start time and set temperature for the DAY period, pressing NEXT  
after each to advance. Continue with these same steps to adjust the start times and set temperatures  
for the EVE and NITE program periods. When you are finished setting all four periods, continue  
pressing NEXT to review your entries for all 4 periods. Move the Set Slide switch to the RUN position if  
you are finished, or to WEEKEND to adjust the periods for Saturday or Sunday periods.  
Operation, default] The thermostat follows four temperature programs: MORN,  
DAY, EVE, and NITE. Each period has a start time and a set temperature.  
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  
questions, and also permits you to email your questions to our technical support staff at your  
convenience.  
JP2 (SCALE): [UP = Celsius] This setting displays all temperature values in C˚ degrees. [DOWN =  
Fahrenheit, default] All temperature values are displayed in F˚ degrees.  
JP3 (BATT): [UP = None] This setting only applies if you are NOT using batteries in the thermostat, and  
are powering the thermostat entirely from the system (“C” wire terminal). [DOWN = Batt, default] This  
setting, regularly monitors the battery level, and shows “LOW BAT” on the screen if the batteries need  
replaced. Use this setting at all times when batteries are physically present in the thermostat.  
WEEKEND PROGRAMS: Move the Set Slide switch to WEEKEND. You will be programming both  
Saturday and Sunday at the same time. You will begin with the start time for the MORN period, and use  
the same steps that you did for setting the Weekday periods, pressing NEXT to advance through the  
values. Return the Set Slide switch to the RUN position when you are finished.  
LIMITED WARRANTY:  
JP4 (B/O): [UP = “B”] This setting energizes the “B/O” wire terminal at all times in HEAT mode, and is  
not energized in COOL mode. This setting is not typical, and is only needed for certain brands of heat  
pump units, such as: Rheem, Ruud, Goettl, and Bard. [DOWN = “O”, default] This setting energizes the  
“B/O” wire terminal at all times in COOL mode, and is not energized in HEAT mode. This setting is used  
for the majority of heat pump units with the exception of only a few brands.  
If this unit fails because of defects in materials or workmanship within three years of the date of  
original purchase, LUX 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 the 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 location from which the 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. and Canada only.  
ADVANCED FEATURES:  
JP5 (HP MODE): [UP = Dual] Use this setting if you are using a “fossil fuel” type furnace as your  
Auxiliary 2nd heat stage (connected to the “W2” terminal). When the 2nd heating stage is called for, the  
first heating stage (heat pump “Y” terminal) is de-energized. Types of systems that would typically use  
the “Dual” fuel setting would be: natural gas furnace, propane furnace, and oil furnace. [DOWN = Elec,  
default] This setting is used for the majority of traditional heat pump applications, which use an electric  
heating element as the Auxiliary heat stage, and also as the Emergency heat device (connected to the “E”  
terminal) if present. This setting always runs the system’s blower fan (“G” terminal) when heating is  
called for, and is usually required for electric heating elements.  
TEMPERATURE SWING: The amount of temperature variation between load-on and load-off is changed  
by adjusting the swing setting. The default value is #1, and the adjustment range is from #1 to #9.  
smaller swing number makes the temperature control more precise and constant, and increases the  
number of cycles per hour. A larger swing number will produce a greater variation between load-on and  
load-off events, and decreases the number of cycles per hour. To adjust the swing: place the Set Slide  
switch in the RUN position, and press both NEXT and HOLD at the same time. Use UP or DOWN to  
change the setting, then press NEXT when finished.  
A
TEMPERATURE CALIBRATION: This thermostat is calibrated at the factory and in most cases, alterations  
to this setting should not be required. The Calibration feature allows you to manually offset the room  
temperature measurement by as much as plus or minus 5°F (3°C) degrees from its original value. 0°F  
(0°C) is the default setting. To adjust the Calibration: place the Set Slide Switch in the RUN position,  
and the System Mode switch in the OFF position. Press both UP and DOWN together for at least 4  
seconds. Use UP or DOWN to change the setting, then press NEXT when finished.  
JP6 (FAN): [UP = Gas] This setting lets the heating system control the blower fan automatically by itself.  
Types of systems that would typically use the “Gas” fan setting would be: natural gas furnace, propane  
furnace, and oil furnace. [DOWN = Electric / HP, default] This setting runs the system’s blower fan when  
heat is called for, and is required for systems that do not control their own fan while in HEAT mode.  
Heat pump systems, and units with an electric heating element typically require this setting.  
MERCURY WARNING AND RECYCLING NOTICE:  
Mercury is considered to be a hazardous material. If this product is replacing a thermostat that  
contains mercury in a sealed tube, contact your local waste management authority for instructions  
regarding recycling and proper disposal. It may be unlawful in your state to place it in the trash.  
©
2 0 1 2 L U X P R O D U C T S C O R P O R A T I O N . A L L R I G H T S R E S E R V E D  
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WIRING DIAGRAM NOTES:  
(Important, please read all notes before connecting wires)  
HEAT PUMP TERMINAL CROSS REFERENCE CHART  
TABLEAU DE RÉFÉRENCE CROISÉE DE BORNE DE POMPE À CHALEUR  
TABLA DE REFERENCIA PARA LA TERMINAL DE LA BOMBA DE CALEFACCIÓN  
1. If the information provided does not clearly represent your system configuration, please refer to the “TECHNICAL  
ASSISTANCE” section of this manual, and contact our support department before removing any of your existing  
thermostat wiring.  
2. The DASHED lines in wiring diagram #1 are optional depending upon your system type. Single stage heat pumps  
will not have wires present for the “E” or “W2” terminals. For a 2-Heat / 1-Cool system with NO Emergency heat  
wire, AUX heat will be connected to “W2”. A jumper wire may be placed in between the “E” and “W2” terminals  
to allow Emergency Heat Mode.  
3. For Heat Pumps, use either the “B” or “O” wire, NOT BOTH.  
4. If “Y” and “C” wires are both present, then “C” is a common wire.  
HEAT PUMP BRAND  
CORRESPONDING TERMINALS  
TAPE OFF (NOT USED)  
MARQUE DE POMPES  
À CHALEUR  
BORNES  
CORRESPONDANTES  
RUBAN RETIRÉ  
(NON UTILISÉ)  
MARCA DE LA BOMBA  
DE CALEFACCIÓN  
TERMINALES  
CORRESPONDIENTES  
DESPRENDIMIENTO  
(NO UTILIZADO)  
5. If you have a “B” wire in your system that is used as a common wire, connecting it to the “B/O” terminal on this  
thermostat may damage your system and/or the thermostat.  
E
G
Y
R
O
W2  
B
C
L
ARCO / Friedrich  
ARCO / Snyder General  
BARD  
X2  
G
G
G
G
G
G
G
G
G
G
G
G
F
Y
Y
RC  
R
W2  
W1  
W2  
W2  
W1  
Y1  
W2  
W2  
W2  
W
B
C
L
X
L
L
F
L
L
L
E
O
C
NOTES DU DIAGRAMME DE CÂBLAGE :  
(Il est important de lire toutes les notes avant de brancher les fils)  
E
Y1  
Y
R
B
X
BARD, HP, WH, MHP, HPQ  
BDP / BRYANT  
E
R
W1  
X
1. Si l'information fournie dans les diagrammes de câblage suivants ne représente pas clairement ou ne correspond  
pas à votre système, veuillez consulter la section de « L'AIDE TECHNIQUE » de ce manuel et nous contacter  
avant de retirer tout câblage actuel du thermostat.  
2. Les lignes en TRAITS TIRÉS du diagramme de câblage 1 sont optionnelles et leur utilisation dépend de votre  
type de système. Les pompes à chaleur à un étage n'ont pas de fils pour les bornes « E » ou « W2. » Pour un  
système à 2 chauffage / 1 refroidissement SANS fil de chauffage d'urgence, la chaleur AUX sera branchée à « W2  
». Un fil de calier peut être placé entre les bornes « E » et  
« W2 » pour permettre l'utilisation du mode de chau ffage d'urgence.  
3. Pour les pompes à chaleur, utilisez soit le fil « B » ou « O », NON PAS LES DEUX.  
4. Si vous avez les fils « Y » et « C », alors le « C » est le fil commun du système.  
E
E
Y
R
O
O
O
O
V
C
CARRIER  
Y
R
C
CARRIER 5Q  
to W2  
E
Y, W1  
Y
R
C
CARRIER 50Q, QT382  
COLEMAN  
R
C
Y
RED  
R
BLACK  
GE BAY  
X2  
E
Y
O
O
O
R
R
R
R
O
B
B
T
HEIL-QUAKER / Whirlpool  
JANITROL / Goodman  
LENOX TYPICAL HP6  
LENOX HP8  
Y
R
W
5. Si vous avez un fil « B » dans votre système et si ce fil est utilisé comme fil commun, le brancher à la borne «  
Y
R
W2  
Y
C
X
B/O » du thermostat pourrait endommager votre système et/ou le thermostat.  
M
M
M
M
Y
V/VR  
V/VR  
V/VR  
V/VR  
R
E
E
E
E
E
F
Y
X
LENOX HP9, 10  
LENOX HP16, 18, 19  
MAGIC CHEF PE  
RHEEM / RUUD  
SNYDER GENERAL H-R811  
TRANE  
F
Y
X
L
L
NOTAS DEL DIAGRAMA DEL CABLEADO:  
(Importante, por favor lea todas las notas antes de conectar los cables)  
F
Y
X
G
G
G
G
G
G
G
G
F
W
C
X
1. Si la información que se proporciona en los siguientes diagramas de cableado no representa o no coincide  
claramente con la configuración de su sistema, por favor consulte la sección "ASISTENCIA TÉCNICA" de este  
manual y comuníquese con nosotros antes de retirar cualquier cable de su termostato.  
2. Las líneas PUNTEADAS en el diagrama del cableado #1 son opcionales, dependiendo del tipo de sistema. Las  
bombas de calefacción de una fase no contienen cables para las terminales “E” ni “W2”. Para un sistema de 2  
fases de calefacción y una de enfriamiento, NO se conecta el cable de calefacción de emergencia ni el auxiliar  
(AUX) en la terminal “W2”. Puede colocar un cable para formar un puente entre las terminales “E” y “W2” y  
permitir un modo de calefacción de emergencia.  
Y
R
W2  
W1  
W
B
L
Y
R
O
O
C
B
X2  
Y
R
F
T
WEATHERKING  
WESCO  
W1  
W1  
W1  
Y
R
Y1  
Y1  
O
E
C
C
X
E
E
E
R
W2  
WESCO / ADDISON  
WESTINGHOUSE H50  
WESTINGHOUSE HE  
WHITE RODGERS  
YORK  
R
3. Para las bombas de calefacción, utilice el cable “B” o el cable “O”, NUNCA USE AMBOS.  
R
O
W
H2  
W2  
W
X
L1  
4. Si tanto el cable “Y” como el “C” están presentes, entonces es más probable que el “C” sea el cable común del  
C
V/VR  
R
Z
X
sistema.  
E
G
G
Y
O
O
C/X1  
B
L
X
5. Si en su sistema hay un cable “B” que se utiliza como cable común, no lo conecte a la terminal “B” ni “O” del  
termostato, pues podría dañar tanto su aparato como su sistema.  
Y
R
(PH521) ENGLISH  
(PH521) FRENCH  
(PH521) ESPAÑOL  
WIRE IDENTIFICATION AND WIRING SCHEMATICS  
SCHÉMAS D'IDENTIFICATION DES FILS ET DU CÂBLAGE  
IDENTIFICACION DE CABLES Y DIAGRAMAS DE CABLEADO  
TYPICAL 24 VOLT, SINGLE-STAGE HEAT PUMPS AND  
2-STAGE HEAT / 1-STAGE COOL HEAT PUMP SYSTEMS  
WITH NO EMERGENCY HEAT WIRE  
LES POMPES À CHALEUR À UN ÉTAGE TYPIQUES DE 24 VOLTS  
ET LES SYSTÈMES DE POMPE À CHALEUR À 2 ÉTAGES DE CHALEUR /  
1 ÉTAGE DE REFROIDISSEMENT SANS FIL DE CHAUFFAGE D'URGENCE  
BOMBAS TÍPICAS DE CALEFACCIÓN DE UNA FASE Y SISTEMAS  
# 1  
N° 1  
# 1  
TÍPICOS CON BOMBA DE CALEFACCIÓN DE 2 FASES  
Y AIRE ACONDICIONADO DE 1 FASE, TODOS DE 24 VOLTIOS  
W2  
Y
E
R
B/O  
C
G
W2  
Y
E
R
B/O  
C
G
W2  
Y
E
R
B/O  
C
G
**Refer To  
Wiring Note #2  
** Reportez-vous à la note  
de câblage numéro 2  
**Consulte la Nota  
de cableado #2  
System  
Common  
Système  
commun  
Sistema  
Común  
+
+
+
-
-
-
AUX.  
HEAT  
HEAT  
PUMP  
REVERSING  
VALVE  
SYSTEM  
XFMR  
AUX.  
CHALEUR  
POMPE À  
CHALEUR  
ROBINET  
INVERSEUR  
SYSTÈME  
XFMR  
VENTILATEUR  
SOUFFLANT  
CALEFACCIÓN  
AUX.  
BOMBA DE  
CALEFACCIÓN  
VÁLVULA DE  
INVERSIÓN  
SISTEMA  
XFMR  
BLOWER  
FAN  
VENTILADOR  
TYPICAL 24 VOLT, 2-STAGE HEAT / 1-STAGE COOL  
HEAT PUMP SYSTEMS  
LES SYSTÈMES DE POMPES À CHALEUR À  
UN ÉTAGE DE REFROIDISSEMENT / 2 ÉTAGES DE CHAUFFAGE  
TYPIQUES DE 24 VOLTS AVEC UN FIL DE CHAUFFAGE D'URGENCE  
SISTEMAS TÍPICOS CON BOMBA DE CALEFACCIÓN DE 2 FASES  
Y AIRE ACONDICIONADO DE 1 FASE DE 24 VOLTIOS,  
CON CABLE DE CALEFACCIÓN DE EMERGENCIA  
# 2  
N° 2  
# 2  
WITH EMERGENCY HEAT WIRE PRESENT  
W2  
Y
E
R
B/O  
C
G
W2  
Y
E
R
B/O  
C
G
W2  
Y
E
R
B/O  
C
G
System  
Common  
Système  
commun  
Sistema  
Común  
+
+
+
-
-
-
AUX.  
HEAT  
HEAT  
PUMP  
EMERGENCY  
HEAT  
REVERSING  
VALVE  
SYSTEM  
XFMR  
BLOWER  
FAN  
AUX.  
CHALEUR  
POMPE À  
CHALEUR  
CHAUFFAGE  
D'URGENCE  
ROBINET  
INVERSEUR  
SYSTÈME  
XFMR  
VENTILATEUR  
SOUFFLANT  
CALEFACCIÓN  
AUX.  
BOMBA DE  
CALEFACCIÓN  
CALEFACCIÓN DE  
EMERGENCIA  
VÁLVULA  
DE INVERSIÓN  
SISTEMA  
XFMR  
VENTILADOR  

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