Heating; Dehumidification - Carrier Connect Installation Manual

Heating

The thermostat's application and configuration determine the specific heating sequence. It can control up to 4
stages of heating when configured for non-Carrier heat pump applications, or up to 2 stages of heating for non-
heat pump applications.
NOTE The heating stages are controlled based on a drift algorithm and the configurable DIFFERENTIAL value
(.5°F default).
The following conditions must true for heating to operate:
•
The OAT must be below the HEAT LOCKOUT (55°F default), if enabled
•
The heating stage 5-minute minimum off-timer has expired
•
The space temperature has exceeded the heating setpoint by the DIFFERENTIAL value (.5°F default)
Additional stages are added and dropped, based on demand, using the DIFFERENTIAL value, STAGE DELAY timer,
and FORCED STAGE UP timer configuration values. If the LOW HEAT LOCKOUT is configured for ON, or between
20°F and 5°F, and the OAT is equal to or less than that value, heat stages 1 and 2 are energized on a demand for
heating and remain on until the heating demand is satisfied.
NOTE Once a heating stage is energized it will remain on for a minimum of 5 minutes regardless of demand.

Dehumidification

There is occupied and unoccupied dehumidification on units that are equipped with the Carrier Humidi-MiZer™
from the factory, or by energizing the first stage of cooling and over-cooling by 2°F.
The following conditions must be true for dehumidification to operate:
• For the Humidi-MiZer™ option, DEHUMIDIFY must be set to YES.
•
For over-cooling, DEHUMIDIFY must be set to OVRCL 2°F
•
Must not be configured for HUMIDIFY, HEAT PUMP, or COMPRESSOR EQUIPMENT STAGES =3
• Must not be in heating or cooling mode
•
Humidity must be 2% greater than the dehumidify setpoint
Dehumidification ends when:
• Humidity drops 3% below the dehumidify setpoint
•
Space temperature drops below the cooling setpoint by more than 2°F, depending on configuration
•
There is a demand for cooling or heating
Carrier Connect™
Wi-Fi Thermostat
Installation Guide
Operating your system using the Carrier® Connect™ Wi-Fi Thermostat
Carrier Proprietary and Confidential
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