Installation manual

11
ATC32U02 Communicating, Programmable Thermostat - IOM
Rev.: 24 Feb., 2014
6.0 Humidity Confi guration
Confi gure humidity control settings (dehumidifi cation/
humidifi cation).
Adjust the Humidity Control settings using the up/down arrow
buttons. Press the center button to save changes.
• Dehumidifi cation – This logic will communicate
a Dehumidifi cation output when the humidity is
greater than the setpoint (acts as a dehumidistat).
The Dehumidifi cation output will not be
communicated when the humidity is below the
setpoint.
• Humidifi cation – This logic will communicate a
Humidifi cation output when the humidity is less
than the setpoint (acts as a humidistat). When the
Humidifi cation output is active, the fan output will
also be active. The Humidifi cation output will not
be communicated when the humidity is above the
setpoint.
• Both – Incorporates both Dehumidifi cation and
Humidifi cation logic.
• None (default) – Dehumidifi cation
and Humidifi cation outputs will not be
communicated.
7.0 Temperature Algorithm
NOTE 1: The Proportional Integral options require fi rst stage
heating or cooling to be active for a minimum of 5 minutes,
before energizing second stage when confi gured for multi
stage operation.
NOTE 2: The Differential option will activate fi rst stage heating
or cooling when the temperature is more than the fi rst stage
differential value (User Manual section 5.6.2.3), below or
above the setpoint. Second stage heating or cooling will be
activated when the temperature is more than the fi rst and
second stage differential values combined (User Manual
section 5.6.2.3), below or above the setpoint. Third stage
heating will be activated when the temperature is more than
the fi rst, second, and third stage differential values combined
(User Manual section 5.6.2.3), below the setpoint.
7.2 ANTICIPATOR
If you fi nd that the thermostat is overshooting or
undershooting the temperature setpoint value, the Anticipator
setting allows for adjustment to correct the temperature
algorithm. When the Anticipator value is set to a lower
number, the thermostat becomes more sensitive and when
the Anticipator value is raised, the thermostat becomes less
sensitive. If the thermostat is overshooting the temperature
setpoint, adjust the Anticipator value up to reduce thermostat
sensitivity. If the thermostat is undershooting the temperature
setpoint, adjust the Anticipator value down to increase
thermostat sensitivity.
Adjust the Anticipator setting using the up/down arrow
buttons. Press the center button to save changes.
• Anticipator (default 3): valid range: 1 to 9
7.3 DIFFERENTIAL
The Differential adjustment will vary the number of degrees
from the setpoint before a call for heating or cooling is made.
Use this function if you fi nd that the thermostat is starting a
call too soon/late or staging equipment up/down too quickly/
slowly. For example, with a 1 ˚F 1st stage differential and
a heating setpoint of 70˚F, your thermostat will not call for
heating until the temperature is 69˚F.
Adjust the Differential setting using the up/down arrow
buttons. Navigate between Differentials using the left/right
arrow buttons. Press the center button to save changes.
7.4 CYCLES PER HOUR
The thermostat allows the user to adjust the maximum
number of on/off cycles per hour to maintain the desired
indoor temperature.
Adjust the Cycles per Hour setting using the up/down arrow
buttons. Press the center button to save changes.
• 4 (default): operation will start no sooner than 15
minutes after the previous call was initiated
• 6: operation will start no sooner than 10 minutes
after the previous call was initiated (can provide
tighter temperature control)
TEMPERATURE CONTROL
TEMPERATURE ALGORITHM
ANTICIPATOR
DIFFERENTIAL
CYCLES PER HOUR
SMART HEAT STAGING
ELECTRIC HEAT LOCKOUT
SELECT OPTION
PREVIOUS SAVE
7.1 TEMPERATURE CONTROL
Confi gure the logic the thermostat uses to meet the
temperature setpoints.
• Proportional Integral (default) – This logic will
use a combination of temperature differential and
operating time to determine the appropriate heating
or cooling stages for operation (see NOTE 1).
• Proportional Integral (No Down Staging) – This
logic includes the Proportional Integral logic, but
in addition the logic keeps all active heating or
cooling stages energized until the demand is fully
satisfi ed (see NOTE 1).
• Differential – This logic will only use temperature
differential to determine the appropriate heating or
cooling stages for operation. This logic will keep
all active heating or cooling stages energized until
the demand is fully satisfi ed (see NOTE 2).