User manual

ATC32U02 Communicating, Programmable Thermostat - User Manual
Rev.: 24 Feb., 2014
12
Geothermal Heat Pump Systems
5.6.4.4.3 FAN - PROGRAMMED DEMAND
REDUCTION
This option allows for the customization of
fan settings during the Programmed Demand
Reduction schedule.
PROGRAMMED DEMAND
REDUCTION FAN
OPERATION
SAVE
PREVIOUS
SELECT OPTION
ALLOW CONSTANT FAN
WHEN DEMAND REDUCTION
IS ACTIVE
AUTO FAN ONLY
Adjust the Programmed Demand Reduction
Fan settings using the up/down arrow buttons.
Press the center button to save changes.
• Auto Fan Only (default): During the
scheduled Programmed Demand Reduction
time (section 5.6.5.5.4), only auto fan mode
is allowed.
• Allow Continuous Fan: During the
scheduled Programmed Demand Reduction
time (section 5.6.5.5.4), the fan will operate
normally.
5.6.4.4.4 SCHEDULE - PROGRAMMED
DEMAND REDUCTION
This option allows setting a 7-day time schedule
for Programmed Demand Reduction.
SAVE
PREVIOUS
PROGRAMMED DEMAND
REDUCTION SCHEDULE
DEMAND REDUCTION
START END
TIME TIME
MON 8:00A 4:00P
TUE 8:00A 4:00P
WED 8:00A 4:00P
THU 8:00A 4:00P
FRI 8:00A 4:00P
SAT 12:00P 12:00P
SUN 12:00P 12:00P
5.6.5 INTERMITTENT FAN
Intermittent Fan function allows the fan to run
periodically when the heating/cooling equipment is
off. Many times this functionality is used to improve
the performance of air cleaning or special fi ltration
systems.
When the Intermittent Fan function is active, the fan
output will be activated for the currently selected
Intermittent Fan On Time, and then operate using
the selected Intermittent Fan Off and On times until a
heating or cooling operation is activated again.
After the heating or cooling operation is complete,
the intermittent fan operation will resume with the
beginning of a new Intermittent Fan On Time on the ¼
hour.
• On Time (default Off): options: Off, 5 to 20
minutes (in 5 minute increments)
• Off Time: options: 5 to 90 minutes (in 5 minute
increments)
NOTE: This intermittent fan operation can also
improve the performance of air cleaning or special
fi ltration systems that locate the cleaning or fi ltration
media at the return air side of the fan.
5.6.6 SERVICE INFORMATION (System Status and
Fault Information)
These additional screens help the service personnel to
have a better understanding of what problems might
be occurring before arriving for service.
5.6.6.1 FAULT STATUS
Fault Status mode displays the active fault code as
well as the fi ve most recent stored fault codes that
occurred on the system.
DETAILS
NO FAULT
NO FAULT
NO FAULT
NO FAULT
PREVIOUS
NO DEMAND REDUCTION
FAULT STAUS
ACTIVE FAULT
NO FAULT
LAST 5 FAULTS
LT1 LOW WATER TEMP
Navigate between system fault codes using the up/
down arrow buttons. Press the center button to
view more information about potential reasons why
the highlighted fault may have occurred.
Adjust the Programmed Demand Reduction
Schedule start and end time settings using
the up/down arrow buttons in increments of
10 minutes. Press the center button to save
changes.
NOTE: To disable Programmed Demand
Reduction, set the Start time equal to the End
time for that day.