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P621U
®
SMART TEMP UNIVERSAL
5/1/1-DAY PROGRAMMABLE THERMOSTAT
(FOR BOTH CONVENTIONAL AND HEAT PUMP SYSTEMS)
INSTALLATION AND OPERATING INSTRUCTIONS
52161
IMPORTANT!
• Please read all of these instructions carefully before beginning
installation.
• 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.
Th
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CAUTIONS AND WARNINGS: • This 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 LUXPRO thermostats requiring batteries. BE SURE TO CHANGE THE BATTERIES AT LEAST ONCE A YEAR, or whenever you see the LO BATT indication on the screen. Failure to follow these battery instructions could result in property damage and/or personal in
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P621U LCD Display Screen Fan Mode Set Slide FAN Switch AUTO TU Switch SET ON DAY : 536 P FAN RUN HEAT DAY/TIME ˚ F TEMP PROG F ˚ AIR FILTER FILTER 72 %LEFT40 SET74 TEMPERATURE HEAT SETBACK HOLD OFF EMER COOL NEXT System Mode Switch UP / DOWN Buttons SYSTEM COMPATIBILITY: The electrical rating for this thermostat is 1.5 Amps per terminal, with a maximum total combined load of 3.0A for all terminals combined. COMPATIBLE WITH: • Most 24-volt heating and cooling systems • 1 or 2 stage Heat / 1 stage
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FEATURES: • 1 or 2-Heat / 1-Cool, 5/1/1-day programming • Universal Compatibility for all system types • Weekdays, Saturday, and Sunday can be programmed separately ® TM • Exclusive LUX Speed Slide for easy programming • User-selectable periods per day (2 or 4) • User-selectable programmable or non-programmable operation ® • LuxLight EL (Electro-Luminescent) lighted display • Programmable air filter life timer • Graphical filter monitor • Keypad lockout for unauthorized users • Manual temperatur
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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 condi
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INSTALL THERMOSTAT BASE: THERMOSTAT TOP VIEW 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. Separate new thermostat housing using your thumb and index finger. Provide pressure in opposite directions to the release tabs on the top of the housing, in the directions shown in the diagram shown above. 4. Route the
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WIRING DIAGRAM NOTES: (Important, please read all notes before connecting wires) • If the information provided in the following wiring diagrams does not clearly represent or match your system, please refer to the “TECHNICAL ASSISTANCE” section of this manual, and contact us before removing any of your existing thermostat wiring. • 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 show
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WIRING DIAGRAMS: DIAGRAM SYSTEM TYPE / DESCRIPTION PAGE # #1 CONVENTIONAL: HEATING ............................................................9 1-STAGE OR 2-STAGE 2, 3, 4, 5 WIRES #2 CONVENTIONAL: HEATING ..........................................................10 3-WIRE ZONE VALVE 3, 4 WIRES #3 CONVENTIONAL: COOLING ..........................................................11 1-STAGE 3, 4 WIRES #4 CONVENTIONAL: HEATING AND COOLING .....................................12 1-STAGE HEAT 4, 5 WIRE
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9 2, 3, 4, 5 WIRES #1 1-STAGE OR 2-STAGE, HEATING ONLY (INCLUDING MILLIVOLT) (2-WIRE HEAT USE “RH” & “W1”) Factory RH-RC Jumper Wire Installed O B G Y RC RH W1 A W2 C FAN WIRE MAY NOT BE G R W W2 C PRESENT IN ALL SYSTEMS F RH W1 X V 4 B* O P T I O N SYSTEM COMMON A L STAGE STAGE SYSTEM 24V FAN 1 2 TRANSFORMER HEATER NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC
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10 3, 4 WIRES #2 HOT WATER HEATING ONLY (WITH A 3-WIRE ZONE VALVE) Factory RH-RC Jumper Wire Installed O B G Y RC RH W1 A W2 C R W A C X RH W1 B* V 4 O P T I O N SYSTEM COMMON A L OPEN CLOSE SYSTEM 24V TRANSFORMER 3-WIRE ZONE VALVE OPEN = Heat On CLOSE = Heat Off NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC
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11 3, 4 WIRES #3 1-STAGE, COOLING ONLY Factory RH-RC Jumper Wire Installed O B G Y RC RH W1 A W2 C G Y R C F Y1 RC X 6 V B* O P T I O N SYSTEM COMMON A L SYSTEM 24V AIR FAN TRANSFORMER CONDITIONER NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC
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12 4, 5 WIRES #4 CONVENTIONAL (NON HEAT PUMP) 1-STAGE HEATING AND 1-STAGE COOLING Factory RH-RC Jumper Wire Installed OBY G RC RH W1 A W2 C G Y R W C F Y1 RH W1 X 6 RC 4 B* V O P T I O N SYSTEM COMMON A L AIR SYSTEM 24V FAN HEATER CONDITIONER TRANSFORMER NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC
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13 5, 6 WIRES #5 CONVENTIONAL (NON HEAT PUMP) 2-STAGE HEATING AND 1-STAGE COOLING Factory RH-RC Jumper Wire Installed OBY G RC RH W1 A W2 C G Y R W W2 C F Y1 RH W1 X 6 RC 4 B* V O P T I O N SYSTEM COMMON A L STAGE STAGE AIR SYSTEM 24V FAN 1 2 CONDITIONER TRANSFORMER HEATER NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC
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14 5, 6 WIRES #6 CONVENTIONAL (NON HEAT PUMP) 1-STAGE HEATING AND 1-STAGE COOLING WITH TWO SEPARATE 24V TRANSFORMERS Factory RH-RC Jumper Wire REMOVED O B G Y RC RH W1 A W2 C G Y RC RH W C F Y1 R R W1 X 6 V V 4 B* O P T I O N SYSTEM COMMON A L AIR COOL 24V HEAT 24V FAN HEATER CONDITIONER TRANSFORMER TRANSFORMER NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC
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15 SINGLE-STAGE HEAT PUMP SYSTEM 4, 5 WIRES #7 WITH NO AUX OR EMERGENCY HEAT ** Use “O” or “B” CUSTOMER INSTALLED Y-W1 Jumper Wire Terminals, Never Both Factory RH-RC Jumper Wire Installed O B G Y RC RH W1 A W2 C O G Y R C F Y1 RC X 6 V B* O P T I O N SYSTEM COMMON A L REVERSING SYSTEM 24V FAN HEAT PUMP VALVE TRANSFORMER NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC
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16 5, 6 WIRES 2-HEAT / 1-COOL, HEAT PUMP SYSTEM #8 WITH AUX AND EMERGENCY HEAT ** Use “O” or “B” CUSTOMER INSTALLED Y-W1 Jumper Wire Terminals, Never Both Factory RH-RC Jumper Wire Installed O B G Y RC RH W1 A W2 C O G Y R W2 C F Y1 RC W3 X 6 V W B* O P T I O N SYSTEM COMMON A L REVERSING SYSTEM 24V AUX / EMERG. FAN HEAT PUMP VALVE TRANSFORMER HEAT NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC
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HARDWARE SETUP OPTIONS: On the thermostat’s circuit board, there is a row of DIP switches, labeled #1 through #8. 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 the HEAT/OFF/COOL mode switch, or press the “HW RST” (Hardware Reset) button on the circuit board. The use of this button is
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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 (SCALE): [OFF/DOWN = F, default] All temperature values are displayed using the Fahrenheit scale. [ON/UP = C] This setting displays all temperature values using the Celsius scale. SWITCH #5 (TIME): [OFF/DOWN = 12 HR, default] This setting displays the clock times and temperature program period start time values on the screen using US standard AM an
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GAS / ELEC SLIDE SWITCH (FAN OPERATION): This switch is a physical component by itself on the circuit board, and is much larger than the DIP BATTERY switches listed above. [DOWN = GAS, default] This setting lets the heating system control the blower fan automatically by itself. Systems that would ELEC typically use the “GAS” setting would be: natural gas, propane, or oil furnaces. This setting has no effect upon Cool mode operation. [UP = ELEC/HP] GAS This setting runs the system’s blower fa
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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). MULTI-FUNCTION, SET SLIDE SWITCH: This switch provides an easy way to quickly access the most commonly used thermostat settings. This switch has 4 individual positions, and unless a specific setting is being adjusted, this switch should always remain in the RUN position for the thermostat to control the room temperature. The
