Operation; Select System Mode (Em Heat/Heat/Off/Cool/Auto); Change Temperature Set Point; Select Fan Setting (On/Auto/Circ) - Aprilaire 8820 Owner's Manual

OPERATION

SELECT SYSTEM MODE
(EM HEAT/HEAT/OFF/COOL/AUTO)
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Press [MODE] to select:
EM HEAT: (only for heat pumps with auxiliary heat)
Thermostat controls auxiliary heat . Heat pump will not
operate in EM HEAT mode .
HEAT: Thermostat controls only the heating system .
OFF: Heating and cooling systems are off .
COOL: Thermostat controls only the cooling system .
AUTO: (if enabled in installer setup) Thermostat
automatically selects heating or cooling depending on
the indoor temperature .
Press [DONE] to save and exit, Or [CANCEL] to exit
without saving . The thermostat will save and exit if
nothing is pressed within 10 seconds .
OPERATION

CHANGE TEMPERATURE SET POINT

Press
or to adjust the current set point .
(See Program Schedule Holds on pages 27-31 for
more information .)
SELECT FAN SETTING
(ON/AUTO/CIRC)
When the fan mode is changed during a program event
it remains in that mode until the next event starts . The
fan must be programmed to FAN ON in the schedule to
run continuously through all events .
Press [FAN] to select:
ON: Fan runs continuously . Use this mode for maximum
air circulation/filtering .
AUTO: Fan runs only when the heating or cooling
system is on .
CIRC: Same as AUTO, but ensures the fan is on for at
least 30 minutes per hour . Use this mode for a balance
of energy savings and air circulation/cleaning .
Press [DONE] to save and exit, Or [CANCEL] to exit
without saving . The thermostat will save and exit if
nothing is pressed within 10 seconds .
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