Selecting Recovery Setting - Honeywell T8631A Owner's Manual

Your T8631A Thermostat includes a screw on the back
marked 2A, allowing for the Adaptive Intelligent Recov-
ery™/Conventional Recovery choice.
Your thermostat was shipped from the factory with the
screw positioned for Adaptive Intelligent Recovery
setting. Your installer may have left the screw in this
position, or may have changed it to Conventional
Recovery. Before programming, you must know which
recovery method your thermostat has been set for.
• With the Adaptive Intelligent Recovery setting, the
dwelling will reach the comfort temperature at the
exact time you have programmed into the thermo-
stat.
• With Conventional Recovery, the programmed time
will be the time your furnace comes on to start
recovery; therefore, you should program the start
time to be earlier than the desired comfort time. It
may require some trial and error for you to arrive at
the best starting time, and the best starting time will
vary as the seasons change.

SELECTING RECOVERY SETTING

RECOVERY OPTION
ADAPTIVE
CONVENTIONAL
DISPLAY TEMPERATURE
o
2B
C
o
2B
F
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To determine which type of recovery is
set into your T8631A Thermostat,
make sure your thermostat is mounted
and powered on the wall.
Press key. Check thermostat display.
• If the shows in the lower right-
hand corner (see illustration), the
thermostat is set for Conventional
Recovery. If you would rather have
the Adaptive Intelligent Recovery
setting, remove thermostat from
wall, turn screw 2A (on back of
thermostat) clockwise
bottoms. DO NOT OVERTIGHTEN.
• If the does not show, the
thermostat is set for Adaptive
Intelligent Recovery™. If you would
rather have Conventional Recov-
ery, remove thermostat from wall,
turn screw 2A (on back of thermo-
stat) out 1/2 to 1 turn.
1A 1B
2A 2B
HEAT
CYCLE RATE
2A IN
SYSTEM
1A
2A OUT
OUT
GRAVITY
AIR/WATER 1 TURN
HOT OUT
WATER 1 TURN
IN
IN
GAS/OIL
OUT
(FACTORY SETTING)
WARM AIR
ELECTRIC
IN
WARM AIR
RUN
PROGRAM
MON
WAKE
INDICATES
THERMOSTAT IS SET FOR
CONVENTIONAL RECOVERY
until it
1B
OUT
1 TURN
IN
IN
OUT
1 TURN
29
AM
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