Honeywell EnergyPro T8665C User manual

69-1538
OWNER’S GUIDE
® U.S. Registered Trademark
Copyright © 2003 Honeywell International Inc.
All Rights Reserved
T8665C,D,E EnergyPro™ Thermostat

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Contents
Introduction .................................................................................................................................... 3
Using this Guide ............................................................................................................................ 4
Thermostat Features ..................................................................................................................... 7
Operating Your Thermostat ........................................................................................................... 11
Setting the Clock ........................................................................................................................... 12
Programming Your Thermostat ..................................................................................................... 25
Replacing the Batteries (T8665C Only) ......................................................................................... 38
Adaptive Intelligent Recovery™ Control ........................................................................................ 40
Troubleshooting (Table 3) .............................................................................................................. 43
Warranty ........................................................................................................................................ 50
Customer Assistance .................................................................................................................... 51

3 69-1538
INTRODUCTION
Congratulations on purchasing your new
EnergyPro™ Thermostat. This exciting new
product is designed to add a new level of
service, energy savings and convenience to
your home comfort system. As part of a larger
system of products and services from your
Energy Utility, your new thermostat allows you
to take advantage of special programs offered
through your Energy Utility. These programs
allow you to further increase your energy
savings beyond the efficiency of a traditional
programmable thermostat.
Although the EnergyPro™ Thermostat can be
used standalone, it is intended to be part of a
communicating system provided by your
Energy Utility.
Read this document thoroughly to take
advantage of the convenience and energy
saving benefits of using this product.

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USING THIS GUIDE
The T8665C,D,E Communicating Thermostat
uses two-way radio frequency (RF) to send and
receive information. This information can be
used to make changes to your thermostat
settings, or settings from your Energy Utility.
The following symbols will help you identify the
features that apply to your system:
—–Tip symbol. Look for helpful
tips throughout this guide
when you see this symbol.
— – Compressor with the word,
Heat Pump, below.These
features are availble when
used with a heat pump.
Keyboard and Display Description
Keyboard
The keyboard is located behind the thermostat
cover. Three frequently used keys: increase ,
decrease , and ikey are located next to the
display. See Fig. 1.
Display
The thermostat displays important information
such as day, time, schedule period,
temperature, filter information, system and fan
operation. See Fig. 2.
WARNING: This product operates under
provisions of Part 15 of the FCC Rules.
Modifications to this product not specifically
authorized by Honeywell may void the user’s
authority to operate this device.
80
90
70
60
90
80
70
60
H
EAT PUMP

5 69-1538
Fig. 1. Thermostat keyboard description.
M20893
A
Time Set Program
Run
Program
Hold Temp
Set Current
Day/Time
Day Heat/Cool
Settings
Wake
Fan
System
Copy
Daylight
Time
Leave Return Sleep
INCREASE
RAISES TEMPERATURE SETTING
DECREASE
LOWERS TEMPERATURE SETTING
INFORMATION
DISPLAYS CURRENT HEAT/COOL
TEMPERATURE SETTING, FILYER
STATUS, AND OUTDOOR
TEMPERATURE (WHEN INSTALLED)
.
PROGRAM SCHEDULING
WAKE LEAVE RETURN SLEEP
ENTERS PROGRAMMING MODE
FAN
SELECTS AUTO/ON
SYSTEM
SELECTS HEAT/OFF/COOL (AUTO)
DIGITAL
DISPLAY
S
ET CURRENT DAY/TIME
S
ETS CURRENT
D
AY AND TIME
R
UN PROGRAM
R
ETURNS THERMOSTAT TO
N
ORMAL OPERATING MODE.
P
RESS AND HOLD TO CANCEL
E
NERGY SAVINGS AND
P
RE-HEAT/PRE-COOL MODES
(
MY CHOICE).
HEAT/COOL SETTINGS
SWITCHES BETWEEN HEAT SETPOINTS AND
COOL SETPOINTS WHILE PROGRAMMING
T
IME / TIME
SETS TIME
FORWARD OR BACK
H
OLD TEMP
S
ETS A HOLD TEMPERATURE
S
ETTING AND ACTIVATES
V
ACATION HOLD FEATURE
DAYLIGHT TIME
SELECTS STANDARD TIME
OR DAYLIGHT SAVING TIME
COPY
COPIES SETTINGS FROM ONE DAY TO
ANOTHER DAY FOR QUICKPROGRAMMING
Filter
FILTER
SELECTS FILTER TIMER REMINDER
PERIOD (0, 15, 30, 60, 90, 120 DAYS)
D
AY
S
ETS DAY OF THE WEEK
WAKE
SET WAKE TIMES
AND
TEMPERATURES
LEAVE
SET LEAVE TIMES
AND
TEMPERATURES
RETURN
SET RETURN TIMES
AND
TEMPERATURES
SLEEP
SET SLEEP TIMES
AND
TEMPERATURES

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Fig. 2. Example of thermostat display.
Auto
System
Fan
Off Wait
Wake
Mon
AM
Filter Days On
DST
TueWedThuFriSat Sun Repl Batt Room
Leave ReturnSleep Recovery
Set Program Set Day/Time
Em Ht Aux Ht
HiMedLo
Critical
Hold for
Temporary
Setting
Em
Heat
M20894
DISPLAYS
EITHER CURRENT
TIME OF DAY OR
PROGRAM TIMES
SHOWS
THERMOSTAT
IS IN THE
SET CURRENT
DAY/TIME MODE
SHOWS
TEMPERATURE
SETTING CHANGED
FOR THIS
PROGRAM
PERIOD
SHOWS TEMPERATURE
DISPLAYED IS THE CURREN
T
SET TEMPERATURE
SHOWS TEMPERATURE
DISPLAYED IS THE CURRENT
ROOM TEMPERATURE
S
HOWS FILTER TIMER
E
XPIRED (TIME TO
R
EPLACE FILTER)
DISPLAYS EITHER ROOM
OR SET TEMPERATURE
SHOWS CURRENT FAN
KEY POSITION ON/AUTO
SHOWS THERMOSTAT IS
CALLING FOR THE FAN
SHOWS SMART
RESPONSE IS OFF
AND CONVENTIONAL
RECOVERY IS ON
SHOWS THAT THERMOSTAT
IS CALLING FOR
SHOWS CURRENT
SYSTEM KEY POSITION
HEAT/OFF/COOL
S
HOWS CURRENT
P
ROGRAM PERIOD
O
R PERIOD BEING
P
ROGRAMMED
S
HOWS CURRENT
D
AY OR DAYS BEING
P
ROGRAMMED
SHOWS WHEN
THERMOSTAT
IS IN THE
PROGRAMMING
MODE
S
HOWS VACATION
H
OLD DURATION
SHOWS SYSTEM ON
DAYLIGHT SAVING TIME
SHOWS ADAPTIVE
INTELLIGENT RECOVERYTM
IS IN EFFECT
SHOWS BATTERIES
NEED REPLACING
SHOWS THERMOSTAT
IS COMMUNICATING
SUCCESSFULLY
SHOWS CRITICAL
PRICE TIER IS ACTIVE
SHOWS ACTIVE
PRICE TIER
(HIGH, MEDIUM OR LOW)

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THERMOSTAT FEATURES
• Adaptive Intelligent Recovery™ Control
for comfort and energy savings.
• Customize the program schedule—
program your own schedule to fit your
needs.
• Temporary schedule override—set the
thermostat higher or lower for the current
program schedule.
• Permanent schedule override—set the
thermostat higher or lower indefinitely.
• Vacation mode (1 to 255 days) for added
comfort and energy savings. Set the
temperature higher or lower for energy
savings while on vacation. At the same
time, set the comfort level you want when
you return.
• Set the filter indicator (0, 15, 30, 60, 90, or
120 days) to remind you to change the
filter.
• Information at the press of a button—use
the i (information) key to see the outdoor
temperature (C7089B Outdoor Temper-
ature Sensor optional accessory), the
current setpoints, or the filter status.
• Daylight Time key for quick time changes
between Daylight and Standard time.
• Backlit display for improved readability
(press any key to activate).
• Optional outdoor temperature display—
ask your installer to install an outdoor
temperature sensor to activate this
feature.
• For additional features, see the System
User’s Guide provided by your Energy
Utility or systems provider.

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Special Energy Saving Features
The EnergyPro™ Thermostat supports
Demand Response and Price Response
Programs from your Energy Utility. If you have
any questions concerning the application of this
thermostat or these special programs and
features, please contact your local Energy
Utility.
Demand Response
If your utility offers a Demand Response
Program, this thermostat can be managed by
your utility to reduce your energy consumption
during times of peak demand. When your
thermostat is helping your Energy Utility to
manage energy in your community, the word,
SAVE, is displayed on the thermostat as shown.
If you have any questions about the application
of this thermostat or these special programs
and features, please contact your local Energy
Utility.
Aut
o
System
Fan
Wake DST
Cool
Sat Room
Set Program Set Day/Time
Em Ht Aux Ht
M20901

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Pre-Cool and Pre-Heat
Your Energy Utility may decide to use the
Pre-cool /Pre-heat feature to slightly raise or
lower your home temperature setting
immediately prior to a Demand Response
event to minimize the effect on your comfort.
When the Pre-heat or Pre-cool option is in
effect, the thermostat displays PrE.
Price Response
If your utility offers a Price Response Program,
this thermostat works with your Energy Utility to
inform you of the rate in effect at any given time
and automatically adjust your energy use for
each rate. The rate in effect is indicated on the
thermostat display as shown (Critical, Hi, Med,
and Lo). This typically involves controlling your
home at a higher temperature during cooling
season and a lower temperature during heating
season to reduce energy consumption.
Aut
o
System
Fan
Wake DST
Cool
Tue Room
Set Program Set Day/Time
Em Ht Aux Ht
M20902

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Display shows Critical rate in effect.
Display shows High rate in effect.
Display shows Medium rate in effect.
Display shows Low rate in effect.
Aut
o
System
Fan
Wake
AM
DST
Cool
Tue Room
Set Program Set Day/Time
Em Ht Aux Ht
Critical
M20906
Aut
o
System
Fan
Wake
AM
DST
Cool
Tue Room
Set Program Set Day/Time
Em Ht Aux Ht
Hi
M20903
Aut
o
System
Fan
Wake
AM
DST
Cool
Tue Room
Set Program Set Day/Time
Em Ht Aux Ht
Med
M20904
Aut
o
System
Fan
Wake
AM
DST
Cool
Tue Room
Set Program Set Day/Time
Em Ht Aux Ht
Lo
M20905