Carrier Connect 33CONNECTSTAT43FX - Page 33

Using installer settings
Carrier Connect™ Wi-Fi Thermostat 33CONNECTSTAT43FX CARRIER CORPORATION ©2021
Installation Guide All rights reserved
29
Setting
Default/Range
COOL STAGES—The numbers of stages define the number of HP or AC cooling stages that
are present in the compressor equipment. The numbers of stages chosen also define the
number of HP heating stages that are present in the compressor equipment if the
COMPRESSOR selection is HP.
NOTES
• This setting is not available to the installer if the COMPRESSOR is set to NONE.
• The maximum number of stages is 2 if HP is selected.
• The maximum number of stages is 3 if AC is selected.
If COOL STAGES is set to 3, the Y3 relay output is used for the third-stage compressor
cooling and is not available for optional functions such as HUMIDIFIER,
DEHUMIDIFICATION, and OCCUPANCY OUTPUT.
D:
R:
1
1 to 3
AUTO ALLOWED—Enable or disable the selection of AUTO mode when the mode button is
pressed. AUTO mode allows the thermostat to automatically switch from heating to
cooling to maintain the conditioned temperature between the heating and cooling
setpoints.
NOTE AUTO ALLOWED is only available if both a heating source and a cooling source are
available (HEAT STAGES greater than 0 and COMPRESSOR equal to AC or HP).
D:
R:
YES
YES (Auto mode is
available)
NO (Auto mode is not
available)
AUTO CHANGEOVER—Defines an auto changeover of the minimum number of minutes of
equipment off-time before switching from heat-to-cool or from cool-to-heat, when
operating in AUTO Mode.
This setting is only available if AUTO ALLOWED is set to YES. The top line in this screen
scrolls to display AUTO CHANGEOVER.
If the setpoint or the mode is changed, the auto changeover time is bypassed to provide a
timely response to the user’s request. The auto changeover time becomes active the next
time the system is operating in heat and there is a cool demand, or the system is
operating in cooling and there is a heating demand.
D:
R:
30 minutes
5 to 30 minutes