Honeywell Chronotherm 3 User Manual

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ANSWERING COMMON QUESTIONS ABOUT THE CHRONOTHERM III THERMOSTAT
HereÕs how to override Adaptive Intelligent Recovery
setting:
nSet the desired WAKE program temperature.
nSet the WAKE program time 30 to 60 minutes before
the time you normally get up. (You can adjust this
time. If the house reaches the comfort temperature
too early, set the time later; if it reaches the comfort
temperature too late, set the time earlier, but donÕt go
beyond 90 minutes.)
nSet the desired SLEEP program time and...

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SAVING ENERGY ACROSS THE U.S.
9% TO 11%
12% TO 13%
14% TO 15%
16% TO 18% ONE 10  F ENERGY SAVINGS PERIOD*
70  TO 60  F; 8 HRS/DAY
18% TO 24%
23% TO 25%
25% TO 29%
UP TO 30% TWO 10  F ENERGY SAVINGS PERIODS*
70  TO 60  F; 8 HRS/DAY, 8 HRS/NIGHT
M 167B o o
o
o
o
o o
o
PERCENTAGE OF HEATING ENERGY YOU CAN SAVE
* Savings for a 5  F heating setback are at least
1/2 of savings for a 10  F setback.
Actual savings depend on your home, geographic location,
number of energy saving periods and energy savings...

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40
7% TO 9%
10% TO 11%
12% TO 14%
15% TO 18% ONE 5  F ENERGY SAVINGS PERIOD*
75  TO 80  F; 8 HRS/DAY
11% TO 15%
16% TO 18%
19% TO 22%
23% TO 33% TWO 5  F ENERGY SAVINGS PERIODS*
75  TO 80  F; 9 HRS/DAY, 7 HRS/NIGHT
M 211B o o
o
oo
o
PERCENTAGE OF COOLING ENERGY YOU CAN SAVE
* Actual savings depend on your home, geographic location,
number of energy saving periods and energy savings temperature.
SEATTLE, WA
16% - 23%BILLINGS, MT
9% - 16%MPLS., MN
12% - 20%CHICAGO, IL
13% - 20%
CINCINNATI, OH
12% -...

GLOSSARY
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42
EM HT light [T8631R only] (red)Ñthis light glows
whenever the thermostat system switch is in the EM
HT position (located on subbase). On some systems
it may also indicate the need to switch to EM. HEAT
because of a problem with the heat pump.
Sunday program schedule
The schedule of WAKE, LEAVE, RETURN and SLEEP
period start times and temperatures that you program to
run on Sundays.
Time period
One of four program periods: WAKE, LEAVE, RETURN
and SLEEP available with the Chronotherm III...

Weekday Program
START HEATING COOLING
PERIOD TIME TEMPERATURE TEMPERATURE
WAKE
LEAVE
RETURN
SLEEP
Saturday Program
START HEATING COOLING
PERIOD TIME TEMPERATURE TEMPERATURE
WAKE
LEAVE
RETURN
SLEEP
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YOUR THERMOSTAT
YOUR PERSONAL PROGRAM
You can use the tables below to plan your schedule
before you begin programming. If you choose not toprogram a daytime energy savings period, leave the
LEAVE and RETURN periods blank.
Sunday Program
START HEATING COOLING
PERIOD TIME TEMPERATURE TEMPERATURE
WAKE
LEAVE...

TROUBLESHOOTING GUIDE
IFÉ THENÉDisplay will not come on.nCheck that heat or cool system power is on. You need 24V from R to C
terminals.
nMake sure thermostat is correctly mounted on subbase.
Display flashes during programming.nYou have reached the temperature setting limit. The setting range is
45° F to 88° F.
Display flashes during operation.nProgramming has been lost because of a power outage. You must
reprogram.
Program is lost due to powernCheck that backup batteries are installed correctly. Replace...

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QUICK REFERENCE TO THE KEYS
Press these keys to: Begin the current day or time
programming.
Set the day of the week and select
the program day during program-
ming.
Select the time period to program or
review.
Switch between heat and cool
settings during programming or
when reviewing the program.
Set the time ahead and back. Hold
either key down to change the
setting faster.
Set the temperature while program-
ming and temporarily change the
temperature during operation. Hold
either key down to...

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INDEX
Accessing external system control .............................. 20
Adaptive Intelligent Recovery .......................... 25-28,40
Auxiliary heat light ....................................................... 41
Batteries, replacement ................................................ 23
Blinking display ........................................................ 3,10
Canceling programs .................................................... 17
Change temperature...

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LIMITED ONE-YEAR WARRANTY
Honeywell warrants this thermostat, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a period
of one (1) year from the date of purchase by the consumer. If, at any time during the warranty period, the product is defective or malfunctions, Honeywell
shall repair or replace it (at HoneywellÕs option) within a reasonable period of time.
If the thermostat is defective,
(i) return it, with a bill of sale or other...

Chronotherm III
for Comfort and Convenience
OWNERS GUIDE
Residential andResidential andHelping You Control Your World
Building Controls DivisionBuilding Controls Division
Honeywell Inc. Honeywell LimitedÑHoneywell LimitŽe
1985 Douglas Drive North740 Ellesmere Road
Golden Valley, Minnesota  55422Scarborough, Ontario
M1P 2V9
Congratulations! You made a smart choice when you purchased your new Honeywell Communicating
Chronotherm III Thermostat. ItÕs the smart thermostat that:
n
Keeps you comfortable by...