Advertisement
PROGRAMMING
4
USER SETTINGS
Setting Temperature Differentials
4.2
The default settings for the first and second stage differentials and residual cooling fan delay
settings are compatible with most systems and applications. This is normally set at time of
installation and usually does not require any modification under normal operating conditions.
If you feel that the first or second stage of your system is turning on too often, or you wish to
change the fan delay settings, follow the instructions below.
NOTE:
The first and second stage differential settings are the same for both the
heating and cooling systems.
Setting First Stage Differential
The default setting is .5˚ F (0.25˚ C). The room temperature must change .5˚ F (0.25˚ C) from
the setpoint temperature before the thermostat will initiate the system in heating or cooling.
1. In normal operating mode, press and hold the
and
button at the same time for 4 seconds.
LCD display will show "SET D1 X˚", where "X"
equals the ˚F / ˚C differential setting. This is the
current first stage differential setting.
2. Press the
or
button to set the first stage
differential to your desired setting of .5˚, 1˚, or 2˚ F (0.25˚, .5˚, or 1˚ C).
NOTE:
If you do not wish to change the second stage differential setting, you can press
the
and
buttons at the same time twice to proceed to the Residual Cooling fan
setting–see 4.3.
Setting Second Stage Differential
The default setting is 2˚ F (1.0˚ C). This means that
the room temperature must change 2˚ F (1.0˚ C) in
addition to the first stage differential setting before the
thermostat will initiate the second stage of the system
in heating or cooling.
3. Press the
and
buttons at the same time again
and the LCD display will show "SET D2 X˚", where "X"
equals the ˚F / ˚C differential setting. This is the current second stage differential setting.
4. Press the
or
button to set the second stage differential to your desired setting of 2˚, 3˚,
4˚, 5˚, or 6˚ F (1.0˚, 1.5˚, 2.0˚, 2.5˚, or 3.0˚ C).
Setting Residual Cooling Fan Feature
4.3
The default setting is 60 seconds. During the COOL
mode of normal operation the fan will stay on for 60
seconds after the cooling system has satisfied the
setpoint temperature and has turned off the
compressor. This allows the system to provide
higher efficiency during cooling operation.
1. Press the
and
buttons at the same time again and the LCD display will show
"SET FAN XX", where "XX" equals the fan delay time in seconds during the cooling
mode of operation.
2. Press the
or
button to set the residual cooling fan delay to your desired setting
of 0 (disabled), 30, 60, or 90 seconds.
3. Press the
and
buttons at the same time again to set the Recirculating Fan Cycle
or wait 5 seconds and the thermostat will automatically return to normal operating mode.
cont.
4
PROGRAMMING
4
USER SETTINGS
Setting the Recirculating Fan Cycle
4.4
The default is 120 minutes.
1. The display will show "SET OC XXX", where XXX is
the maximum interval of time (in minutes) that the
fan will remain off if the Recirculating Fan Mode
is selected.
2. Press the
or
button to change the Recirculating
Fan off cycle (120, 60, or 40 minutes).
3. Press both the
and
buttons at the same time again to return to the normal
operating mode, or wait 5 seconds for the thermostat to return to the normal
mode automatically.
NOTE:
To erase all user program setting, gently press the RESET button using a paper clip
or a small pencil tip. This will return all thermostat settings to their default values.
ADDITIONAL
5
OPERATION FEATURES
Review Set Temperature
5.1
1. Press and hold the
or
button. The current
setpoint temperature will be displayed in the place
of the current room temperature, and the indicator
SET TEMP will be displayed.
2. The display will return to normal operating mode
when the
or
button is released. Continuing
to hold the
or
button for 3 seconds or longer
will allow the user to change the current setpoint
temperature (See Changing Set Temperature).
Changing Set Temperature
5.2
1. Press and hold
or
button for 3 seconds. The
entire display will flash once and the SET TEMP
indicator will be flashing. Release the
button and press the
or
button again as
desired to adjust the set temperature.
2. The display will return to normal operating mode
after 5 seconds.
3. The TEMP indicator will be showing in the display
indicating that the current temperature shown in the
display is the room temperature.
NOTE:
Select either Cool or Heat with the system
switch to view or change separate cooling or
heating setpoints.
cont.
(Also see section 5.3)
or
5
Hide quick links:
Advertisement
