Carrier Wi-Fi Enabled 24V Smart Thermostat Instruction Manual
This Thermostat is powered by 24VAC only. It requires 24VAC (Rh and/or Rc and C terminals) of the low‐
voltage transformer to be connected to it for proper operaꢀon. It will not operate without these 2
connecꢀons.
Rh and Rc are connected via the shunt jumper (see Fig. 1). For applicaꢀons using two 24VAC
transformers, one in the indoor unit and one in the outdoor unit, remove the shunt jumper (Fig. 1).
Connect the common from each to the C terminal. Connect R from the indoor unit to the Rh terminal.
Connect R from the outdoor unit to the Rc terminal. The W signals are taken from the Rh power and the
Y signal is taken from the Rc power. If Thermostat has been installed in a two—transformer applicaꢀon
that is later changed to a single—transformer installaꢀon, installer must install a field supplied jumper
between Rc and Rh.
Fig. 1 – Shunt Jumper
Accessory Output and Connecꢀons
This thermostat is equipped with a dry contact output for the management of humidifiers, dehumidifiers
and venꢀlaꢀon equipment. The 2 terminals are both labeled as ACC. The dry contact output must be
configured for the management of either one of them.
Venꢀlaꢀon/ERV/HRV
Funcꢀon will be acꢀvated for the % on ꢀme configured, using a cycle rate of 1h. For example, if it is set
to 50%, funcꢀon will be acꢀve for the first 30min and inacꢀve for the next 30min. If the difference in
temperature is larger than the defined max indoor/outdoor temp delta, the funcꢀon will never acꢀvate.
If the outdoor temperature is not available, the thermostat will sꢀll follow the percent on ꢀme,
disregarding the max delta parameter.
Humidifier
Control will be based on a setpoint (which will trigger the acꢀvaꢀon of the funcꢀon) and a pre‐defined
hysteresis of 5% above the setpoint. If humidifier with acꢀve heat opꢀon is selected, the humidifier will
only be acꢀvated when the heat is running, regardless of the humidifier setpoint.
Dehumidifier
| General | Details |
|---|---|
| Name | Carrier Wi-Fi Enabled 24V Smart Thermostat Instruction Manual |
| Make | Carrier |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.55 MB |
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