T8600D, T8601D AND T8602D CHRONOTHERM
®
IV DELUXE PROGRAMMABLE THERMOSTATS
68-0164—1
17
Thermostat Operation
Startup
When power to the thermostat is turned on, a startup and
initialization program begins. The startup occurs only on initial
powerup. After total loss of power for an extended period, the
current time and day may need to be set, but the user
program is held. See Table 11 for the default values.
NOTE: Immediately following initialization, the user can
enter new setpoints to be used in place of the default
values.
Table 11. Default Time, Setpoint and Fan Settings.
Period Time
Heat
Setpoint
Cool
Setpoint
Fan
Setting
Wake 6:00 AM 70°F
(21°C)
78°F
(25.5°C)
Auto
Leave 8:00 AM 62°F
(16.5°C)
85°F
(29.5°C)
Auto
Return 6:00 PM 70°F
(21°C)
78°F
(25.5°C)
Auto
Sleep 10:00 PM 62°F
(16.5°C)
82°F
(28°C)
Auto
Adaptive Intelligent Recovery
®
Feature
Adaptive Intelligent Recovery® ensures that the comfort
setting is achieved at the programmed time regardless of
weather conditions. Conventional recovery, however, starts
recovery at the beginning of the programmed time period and
uses the equipment to achieve the comfort settings as soon
as possible.
Fig. 14. Temperature change in recovery.
70°F
60°F
SLEEP
HEATING MODE
WAKE
SETPOINT
TEMPERATURE
ACTUAL
TEMPERATURE
M6185A
TROUBLESHOOTING GUIDE
Refer to Table 12 for troubleshooting information.
Adaptive Intelligent Recovery® calculates the recovery ramp
based on the number of degrees away from the desired
setpoint, previous equipment performance, and weather
history to initiate recovery at the optimal time to achieve the
comfort setting at the desired time.
Once the recovery ramp is intersected, the setpoint changes
from the setback setpoint to the comfort setpoint. This change
snaps on
the equipment and runs the equipment until the
setpoint is reached. If the setpoint is reached too early or too
late, the ramp is adjusted for the next days' recovery.
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