Carrier 33WIFISTAT43 Wi-Fi Thermostat Installation Guide
•
The space temperature has exceeded the heating setpoint
Filter Status
FILTER STATUS is based on a supply fan runtime or Filter Sta-
by the DIFFERENTIAL value (0.5°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 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.
tus input. The run time can be configured from 500 to 3000 hours.
A filter status alert
displays when the filter timer exceeds the
configured number of hours. Press the icon to see the message.
Holidays
There is a maximum of 24 holiday periods. You can program each
holiday period based on a start and stop month date, or day of the
month and week, with duration up to 365 days. The holiday
schedule uses the first unoccupied period setpoints for temperature
control.
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 Humid-MiZer™/Perfect Humidity™/Hot
Gas Reheat 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:
BACnet Integration
There are two points that act as gateways, allowing or prohibit-
ing BACnet writes to configuration items (BACNET CON-
FIG WRITE) and occupancy control (BACNET BMS OCC).
These variables are only accessible via the local screen.
See “To Configure Advanced System Settings” on page 5.
•
For the Humid-MiZer™/Perfect Humidity™/Hot Gas Re-
heat option, DEHUMIDIFY must be set to HUMI-
DIMIZER
For over-cooling, DEHUMIDIFY must be set to OVRCL
2°F
For non-Humid-MiZer™/Perfect Humidity™/Hot Gas Re-
heat units, DEHUMIDIFY must be set to YES and must
not have an active call for heating or cooling
A write to the Active Heat or Cool Setpoint (AV:409 or
AV:410) places the thermostat into temporary override. This
override will remain in effect until the MAX Temperature
Hold Time (AV:502) expires. Default is 2 hours. Long-term
setpoint adjustment is accomplished by writing to the baseline
setpoints (AV:400- AV:403).
•
•
USING THE WIFISTAT SCREENS
•
•
Setpoint range is 35 to 65%
Humidity must be 2% greater than the dehumidify setpoint
The thermostat supports the following types of constant volume
units:
•
Standard heat/cool unit types with up to 3 stages of me-
chanical cooling, up to 2 stages of gas or electric heating,
and up to 4 stages for heat pumps
Heat pump units utilizing a reversing valve output for
heating and cooling control
Dehumidification ends when DEHUMIDIFY is set to:
•
•
•
HUMIDIMIZER and humidity drops 3% below the dehu-
midify setpoint
•
•
OVRCL2° and space temperature drops below the cooling
setpoint by more than 2°F
YES and space temperature drops below the calculated
setpoint or there is a demand for heat or cool.
Heat pump unit with an OEM defrost control board
NOTES:
•
Humidification or dehumidification control strategies are
NOTE: For details about this calculation, see Humidity.
available for appropriately equipped units.
Humidification
•
The following configurations have interdependencies that
may preclude the use of others:
Reversing valve
Third-stage cooling
Humidification
Dehumidification
Occupancy Output
The flex outputs, Y3, O, and W2, may be available for
optional functions.
There is occupied and unoccupied dehumidification on units that
are equipped with the Humid-MiZer™/Perfect Humidity™/Hot
Gas Reheat 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 Humid-MiZer™/Perfect Humidity™/Hot Gas Re-
heat option, DEHUMIDIFY must be set to HUMI-
DIMIZER
EXAMPLE: In a single stage heating system, the W2 output could
be used as the occupancy output to enable the ECON during occu-
pied periods.
•
•
For over-cooling, DEHUMIDIFY must be set to OVRCL
2°F
For non-Humid-MiZer™/Perfect Humidity™/Hot Gas Re-
heat units, DEHUMIDIFY must be set to YES and must
not have an active call for heating or cooling
Home
The HOME screen is typically what the end user sees.
•
•
Setpoint range is 35 to 65%
Humidity must be 2% greater than the dehumidify setpoint
Dehumidification ends when DEHUMIDIFY is set to:
•
•
•
HUMIDIMIZER and humidity drops 3% below the dehu-
midify setpoint
OVRCL2° and space temperature drops below the cooling
setpoint by more than 2°F
YES and space temperature drops below the calculated
setpoint or there is a demand for heat or cool.
NOTE: For details about this calculation, see Humidity.
Fig. 14 — Home Screen
10
| General | Details |
|---|---|
| Name | Carrier 33WIFISTAT43 Wi-Fi Thermostat Installation Guide |
| Make | Carrier |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.39 MB |
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