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P621U  
Programmable / Non-Programmable  
Thermostat  
Feature rich programmable/non-programmable all-in-one thermostat  
5/1/1-day  
Programmable • Non-Programmable  
Product Highlights  
✓ All In-One Programmable /  
Non-Programmable  
✓ Universal heat pump  
& conventional heat / cool  
✓ Dual power  
✓ 3 year warranty  
✓ Adjustable 2nd stage heat offset  
Product Features  
Installation  
Compatible With  
ƒ Easy installation  
ƒ Universal compatability for conventional heat & A/C  
ƒ Universal compatibility for heat pumps with up to  
2-stage heat/1 stage cool (including AUX/EMERG heat)  
ƒ 2 and 3-wire hydronic systems (hot water baseboard &  
radiator)  
ƒ Gas Millivolt heaters (wall heaters/furnaces & gas  
fireplaces)  
ƒ Program 5/1/1-day or non programmable  
ƒ Easy-view back light  
ƒ Optional wall plate model #WP567  
ƒ User option: 2 or 4 periods per day  
ƒ Keypad lock for unauthorized use  
ƒ Temporary override and manual hold  
ƒ Dual powered (2AA) Alkaline Batteries (included)  
ƒ Temporary compressor protection bypass  
ƒ 5/2 minute selectable time delay for equipment  
protection  
Not Compatible With  
ƒ Line voltage systems (120/240 VAC)  
ƒ User temperature calibration  
ƒ Display option: fahrenheit or celsius temperature  
ƒ Adjustable heating and cooling limits  
ƒ Speed Slide® for easy programming  
ƒ Graphical air filter monitor  
ƒ Selectable smart recovery  
ƒ AM/PM clock or military time option  
ƒ Adjustable temperature differential/swing  
6000 Commerce Parkway, Ste I  
I
Mt. Laurel, NJ 08054  
I
P: 856.234.7905  
I
F: 856.234.7825  
LuxProProducts.com  
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SPECIFICATIONS  
MODEL# P621U  
FAN  
AUTO  
ON  
TU  
SET  
TU  
DAY  
P
FAN  
DAY  
RUN  
P
FAN  
HEAT  
DAY/TIME  
HEAT  
TEMP PROG  
AIR FILTER  
FILTER  
3.375"  
(86mm)  
%LEFT  
SET  
TEMPERATURE  
HEAT  
FILTER  
%LEFT  
SET  
SETBACK  
HOLD  
OFF  
EMER  
COOL  
SETBACK  
HOLD  
NEXT  
5.375" (136mm)  
Easy to read LCD provides time,  
temperature and program information at a glance.  
Dimensions  
Heat/Cool Terminals  
Electrical Ratings  
5.375" (136mm) wide x 3.375" (86mm) tall x 1.125" (28mm) deep  
O, B, G, Y, RC, RH, W1, A, W2, C (solid pins for 24v and Millivolt systems)  
1.5 Amps per terminal at 24 volts  
Temperature Control Range  
ƒ Temp control 45°F to 90°F (7°C to 32°C)  
ƒ Display range: 23°F to 99°F (-5°C to 37°C)  
ƒ Temperature Differential: adjustable from 0.25°F to 2.25°F  
Accuracy ±±1° over a range of 451° to 901°.  
Environmental Limits  
Compatible With  
ƒ Moisture and Dust: meets IP20  
ƒ Operating Humidity: 20% to 90% (non-condensating)  
ƒ Operating temperature: 14°F to 122°F (-10°C to 50°C)  
ƒ Storage temperature: -4°F to 140°F (-20°C to 60°C)  
ƒ Electrical Immunity: meets relevant EMI/EMC specifications  
ƒ Universal compatability for conventional heat & A/C  
ƒ Universal compatability for heat pumps with up to 2-stage heat/  
1 stage cool (including AUX/EMERG heat)  
ƒ 2 and 3-wire hydronic systems (hot water baseboard & radiator)  
ƒ Gas Millivolt heaters (wall heaters/furnaces & gas fireplaces)  
Not Compatible With  
Packaging  
ƒ Line voltage systems (120/240 VAC)  
ƒ Master Carton: 10 units  
ƒ UPC: 0 21079 12621 7  
Project Name  
Date  
Contractor / Engineer  
Location  
6000 Commerce Parkway, Ste I  
I
Mt. Laurel, NJ 08054  
I
P: 856.234.7905  
I
F: 856.234.7825  
LuxProProducts.com