What is the Carrier Connect™ 33CONNECTSTAT43FX Thermostat?
Carrier Connect™ Wi-Fi Thermostat 33CONNECTSTAT43FX CARRIER CORPORATION ©2021
Installation Guide All rights reserved
6
Remote humidity sensor (0-10 volt or 4-20 mA)
The remote humidity measurement is calculated from the 0-10 volt or the 4-20 mA signal applied between H and
C. When the output of the duct sensor is the 4-20 mA signal, a 500 ohm load resistor must be connected between
H and C.
Space humidity sensor
The humidity is read via synchronous communications from a Sensirion SHT21 Humidity and Temperature Sensor.
The Sensirion humidity is accurate to +/- 2 % relative humidity between 20 and 80 % relative humidity.
Outputs
Connections are made via a compact and robust single pole, “finger friendly” spring-type terminal block. All
outputs have a max rating of 1.25 Amp @ 24 Vac.
is energized when the thermostat has a...
First Stage Heat or
AUX Heat
first stage heat or aux heat demand
Second stage heat or
AUX heat
second stage heat or aux heat demand
First stage cooling or
HP heating output
first stage cooling or HP heating output
Second Stage Cooling
or HP Heating Output
second stage cooling or HP heating demand
third stage AC cooling demand
humidification demand
NOTE You can connect to any of these 3 outputs that are unused and select
it in the system settings menu.
HumidiMiZer™ demand
NOTE You can connect to any of these 3 terminals that are unused and
select it in the system settings menu.
the thermostat is running in occupied mode, as determined by the program,
the occupancy input, BMS occupancy, or an override condition
NOTE You can connect to any of these 3 terminals that are unused and
select it in the system settings menu.
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