72
.
7 I
.
70
.
30-31
OPERATION
Auto Recovery
Hunter’s Auto Recovery feature meets the E
NERGY
S
TAR
®
guidelines
for energy efficiency by allowing the heating or cooling system to
recover gradually from an energy-saving setpoint temperature to a
comfort setpoint temperature.
Auto Recovery calculates how early to turn your system back On,
so that the room temperature is already comfortable by the start
of the comfort temperature program period. Auto Recovery works
in both Heat and Cool modes.
For example, in Heat mode, you could have the following
programs:
Program #4 (Overnight)
Program #1 (Morning)
Set Temp = 60°F
Set Temp = 68°F
Time = 10pm
Time = 6am
The room temperature fell to 60°F overnight. Rather than having
the thermostat turning on at 6am, Auto Recovery would note
the temperature difference between 60°F and 68°F and turn the
Heat on approximately 30 minutes early. Therefore, the room
temperature at 6am would be about 68°F instead of 60°F.
■
When the thermostat is in
Auto Recovery mode, the
display will alternate “RECV”
with time, and the program
indicator will flash.
Details of Auto Recovery Operation:
■
Auto Recovery can be disabled by sliding the Recovery switch
on the circuit board to the ALT position. Refer to page 15.
■
Auto Recovery will not operate if Permanent hold, Temporary
hold or Home Today is in operation.
■
Auto Recovery can be canceled manually if HOLD/CLEAR is
pressed during the recovery process. If a recovery process is
canceled manually then the recovery process will not start
again until the next program period starts (an exception is
that if time or program is changed then the thermostat will
check Auto Recovery conditions immediately).
■
Auto Recovery will be canceled and change to Home
Today mode if HOME TODAY is pressed during the
recovery process.
■
Auto Recovery will be canceled and change to Temporary
Manual Override mode if the setpoint is adjusted during the
recovery process.
■
If the system changes between heat and cool (automatically
or manually) then the thermostat will recalculate Auto
Recovery again. Setpoint temperature will be changed to the
opposite system’s comfort temperature if the recovery entry
criteria are still met. Otherwise, the recovery process will be
canceled and return to program control mode.
M T W Th F Sa Su
AUTO COOL
HEAT
TEMP
R E
:
C V
SET TEMP
1
2
3 4
°
C
H
°
C
H
AM
PM
74
B99A p30-40 2/7/03 9:59 AM Page 1
