Lux Products P621Ia Thermostat User Manual


 
TEMPERATURE CALIBRATION: The internal temperature sensor in this thermostat
is accurately calibrated at the factory, and in most cases alterations to this
setting should not be needed. The Temperature Calibration feature allows you to
manually offset the measured temperature by as much as plus or minus 5°F
(3°C) degrees from its original value. This feature can be useful to match or
synchronize this thermostat to another one or more, if multiple thermostats are
used in the same home.
NOTE: The Temperature Calibration setting need to be performed in a timely
manner, as the thermostat will timeout and automatically exit the adjustment
screen after approximately 10 seconds without a button press.
TO CHANGE THE TEMPERATURE CALIBRATION: Ensure that the System Mode
switch is in the OFF position and the Set Slide switch is in the RUN position.
Press and hold both the UP and DOWN buttons together for at least 5 seconds.
The words “SET” and “CAL” will appear on the screen, along with a single
flashing temperature digit. Use the UP/DOWN buttons to change the number of
degrees of adjustment. 0° degrees is the default value, and means no correction
is being applied. Press the NEXT button to accept the setting.
SETBACK FEATURE: The setback feature is similar to both a Temperature
Override and a Temperature Hold, in that both are used to maintain a fixed set
temperature instead of following a programmed daily routine. A Setback can be
considered the same as a Temperature Override, which can last for a longer
duration that you can adjust from 1-12 hours, or 1-30 days. By default, when a
Setback is activated in Heat mode, the set temperature used will be 5F (3C)
degrees lower than the current set temp. For Cool mode, the set temperature
used will be 5F (3C) degrees higher than the current set temp.
TO START A SETBACK: Ensure that the System Mode switch is in either the Heat
or Cool position, and that the Set Slider is in the RUN position. Press and hold
the SETBACK button for at least 2 seconds. The screen will change and show the
words “HOURS LEFT” and “OVERRIDE”, along with two digits. Use the UP/DOWN
buttons to set the duration for how long you would like to maintain a fixed set
temperature (from 1 to 12 hours). If you would like to set the duration for longer
than 12 hours, keep pressing the UP button. The display will change from
“HOURS LEFT” to “DAYS LEFT”, with an available duration of 1 to 30 days. Once
your desired Setback duration is shown on the screen, you can either wait for the
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ADVANCED FEATURES: