4
PROGRAMMING
USER SETTINGS
4
4.1
Default Thermostat Settings
4.2
Setting Temperature Differential
Setting First Stage Differential
NOTE: The first and second stage differential settings are the same for the
heating system.
NOTE: If you do not desire to change the second stage differential "SET D2" setting you
can wait 5 seconds and the thermostat will automatically return to the normal operating
mode. Otherwise, you can press the and buttons at the same time twice to skip the
second stage differential setting.
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, simply follow the
instructions below.
Function Status After Reset
Operation Mode Normal Operating Mode
Room Temperature 70˚ F (21.0˚ C), to be renewed within
5 seconds
Setpoint Temperature According to system switch:
62˚ F (17.0˚ C) for Heat,
Emergency Heat and Off
85˚ F (29.0˚ C) for Cool
Temperature Scale ˚F or ˚C dependent on switch setting
First Stage Differential 0.5˚ F (0.25˚ C)
Second Stage Differential 2˚ F (1.0˚ C)
Short Cycle Protection Timer Reset
Output Relays Off
2.
Press the or buttons to set the first stage
differential to your desired setting of .5˚, 1˚, or 2˚ F (.25˚––displayed as .2˚, .5˚, or 1˚ C).
The default setting is 0.5˚ F (0.25˚ C). The room temperature must change .05˚ 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 buttons 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.
Setting Second Stage Differential
4.
Press the or buttons 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).
2
4.2.1
4.2.2
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.
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.
5
5.2
Changing Set Temperature
NOTE: The installer can reset the thermostat and bypass the compressor protection
features by pressing the RESET button. This will erase all user program settings and
should only be used during installation for testing purposes or to reset a thermostat to
regain normal operation. This will return all thermostat settings to their default values.
The user will have to re-program all of the erased settings.
1.
Press and hold or button for 3 seconds. The
entire display will flash once and the SET indicator
will be flashing. Release the or button and
press the or button again as desired to adjust
the set temperature.
5.3
Compressor Protection
This thermostat includes an automatic compressor protection feature to avoid potential
damage to the heat pump system from short cycling. This thermostat automatically
provides a 5-minute delay after turning off the heating or cooling heat pump output to
protect the compressor.
2.
The display will return to normal operating mode
after 5 seconds.
3.
The SET indicator will turn off indicating that the
current temperature shown in the display is the
room temperature.
5.1
Review Set Temperature
1.
Press and hold the or buttons. The current
setpoint temperature will be displayed in the place
of the current room temperature, and the indicator
SET 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).
ADDITIONAL
OPERATION FEATURES
5
PROGRAMMING
USER SETTINGS cont.
4
NOTE: To erase all user program settings, gently press RESET button using a paper
clip or a small pencil tip. This will return all thermostat settings to their default values.
Remember, this will erase all user program settings entered by the user.
NOTE: Once you have finished setting the differentials, wait 5 seconds and the
thermostat will return to the normal operating mode.
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