28
iThermostat
™
Installation Manual
In the run mode, if the setpoint temperature is manually raised by 3°F (2°C) or more above the actual
temperature with the
key, and the fast second stage feature is enabled, FA ON, the second stage will
energize immediately. With FA OFF, second stage will not energize until the setpoint temperature is 1°F
or more above actual temperature for more than ten minutes.
8)
Filter Replacement Feature:
(Default Setting - 200)
The thermostat will display "FLTR" after a set time of operation. This is a reminder to change or clean
your air filter. This time can be set from 0 to 1950 hours in 50 hour increments. A recommended value to
use is 200 hours. A selection of 000 will cancel this feature.
When "FLTR" is displayed, you can clear it by pressing
HOLD
and
RUN
at the same time. This resets the
timer and starts counting the hours until the next filter change. Contact your system manufacturer for a
specific replacement/maintenance interval.
9)
Temperature Reading Measurement Adjustment:
(Default Setting - 0°)
Allows you to adjust the room temperature display up to 4° higher or lower. Your thermostat was
accurately calibrated at the factory but you have the option to change the display temperature to match
your previous thermostat. The current or adjusted room temperature will be displayed on the left side of
the display.
10)
Timed Hold Feature:
(Default Setting - 4:00)
The thermostat can hold any temperature you set it to for the amount of time you select on this option.
Your choices are 0:00 to 8:00 hours in 15 minute increments. 0:00 means disable.
