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About Advanced Features & Operation
Page 17
MEMORY BACKUP - In the event of a power loss, the
thermostat will retain the stored program settings without
external power or batteries.
2 STAGE OPERATION - The 2nd Stage of heat or cool is
turned on when (1) the 1st Stage has been on for a
minimum of two minutes, and (2) the temperature spread
from the setpoint is equal to or greater than: the setpoint
plus the deadband, plus 2 degrees.
Heat
Setpoint
Cool
Setpoint
Dead
Band
Dead
Band
2 degrees
2 degrees
1st Stage
turn on
2nd Stage
turn on
1st Stage
turn on
2nd Stage
turn on
Heating
Cooling
MINIMUM HEAT/COOL SETPOINT DIFFERENCE - The Heat
and Cool setpoints will not be allowed to come any closer
to each other than the value set in Advanced Setup step
# 7, on page 13. This minimum difference is enforced
during Auto changeover operation.
and Program On
PROGRAMMABLE FAN - If the Programmable Fan timer is
set to a value other than 0:00, the fan will run for the
preprogrammed amount of time,
The Programmable Fan timer will start the fan at the top
of each hour. The Programmable Fan may be active
even if the thermostat mode is Off. Steps 10 & 11
restrict the hours in which Programmable Fan may
operate. Step# 10, page 14 is the start time and step# 11
is the stop time. Setting the times to the same setting
in both steps 10 & 11 will allow Programmable Fan to
operate 24 hours a day.
page 13, step# 9.