Honeywell EnergyPro T8665C User manual

Honeywell
T8665C,D,E EnergyPro™ Thermostat
® U.S. Registered Trademark
Copyright © 2003 Honeywe Internationa Inc.
A Rights Reserved
OWNER’S G IDE
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Contents
Introduction................................................................................................................................... 3
Using this Guide........................................................................................................................... 4
Thermostat Features .................................................................................................................... 7
Operating Your Thermostat .......................................................................................................... 11
Setting the Cock .......................................................................................................................... 12
Programming Your Thermostat .................................................................................................... 25
Rep acing the Batteries (T8665C On y)........................................................................................ 38
Adaptive Inte igent Recovery™ Contro ....................................................................................... 40
Troub eshooting (Tabe 3 )............................................................................................................. 43
Warranty....................................................................................................................................... 50
Customer Assistance ................................................................................................................... 51
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INTRODUCTION
Congratuations on purchasing your new
EnergyPro™ Thermostat. This exciting new
product is designed to add a new eve of
service, energy savings and convenience to
your home comfort system. As part of a arger
system of products and services from your
Energy Utiity, your new thermostat a ows you
to take advantage of specia programs offered
through your Energy Utiity. These programs
a ow you to further increase your energy
savings beyond the efficiency of a traditiona
programmabe thermostat.

Athough the EnergyPro™ Thermostat can be
used standaone, it is intended to be part of a
communicating system provided by your
Energy Utiity.
Read this document thorough y to take
advantage of the convenience and energy
saving benefits of using this product.
3 69-1538

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 Utiity.
The fo owing symbos wi hep you identify the
features that app y to your system:
- Tip symbo. Look for hepfu
tips throughout this guide
when you see this symbo.
- Compressor with the word,
Heat Pump, beow.These
features are avai be when
used with a heat pump.
HEAT PUMP
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Keyboard and Display Description
Keyboard
The keyboard is ocated behind the thermostat
cover. Three frequent y used keys: increase ▲,
decrease ▼, and i key are ocated next to the
dispay. See Fig. 1.
Display
The thermostat disp ays important information
such as day, time, schedue period,
temperature, fi ter information, system and fan
operation. See Fig. 2.
WARNING: This product operates under
provisions of Part 15 of the FCC Rues.
Modifications to this product not specifica y
authorized by Honeywe may void the user’s
authority to operate this device.

HOLD TEMP
COOL SETPOINTS WHILE PROGRAMMING PERIOD (0, 15, 30, 60, 90, 120 DAYS)
M20893A
TIME ^ / ‘
SETS TIME
(MY CHOICE)
DAY
COPY
Fig. 1. Thermostat keyboard description.
5 69-1538

SHOWS ACTIVE
PRICE TIER
(HIGH, MEDIUM C
SHOWS CRITICAL
PRICE TIER IS ACT
SHOWS VACATION
HOLD DURATION
SHOWS FILTER TIMER
EXPIRED (TIME TO
REPLACE FILTER)
SHOWS CURRENT
DAY OR DAYS BEIN
PROGRAMMED
SHOWS CURRENT
PROGRAM PERIOD
OR PERIOD BEING
PROGRAMMED
DISPLAYS
EITHER CURRENT
TIME OF DAY OR
PROGRAM TIMES
SHOWS WHEN SHOWS
THERMOSTAT THERMOSTAT
IS IN THE IS IN THE
PROGRAMMING SET CURRENT
MODE DAY/TIME MODE ,
SHOWS
TEMPERATURE
SETTING CHANGED
FOR THIS
PROGRAM
PERIOD
Set ProgramISet Day/Time
Temporary Setting'
AM
l 'LfLf
l AuxHt Days
_ fed ThuFri Sat Sun Rep Batt Room,
'eave Return S eep Recovery DST
SHOWS BATTERIES
NEED REPLACING
SHOWS ADAPTIVE
INTELLIGENT RECOVERYTM
IS IN EFFECT
SHOWS SYSTEM ON
DAYLIGHT SAVING TIME
SHOWS TEMPERATURE
DISPLAYED IS THE CURRENT
ROOM TEMPERATURE
SHOWS SMART
RESPONSE IS OFF
AND CONVENTIONAL
RECOVERY IS ON
DISPLAYS EITHER ROOM
OR SET TEMPERATURE
SHOWS TEMPERATURE
DISPLAYED IS THE CURRENT
SET TEMPERATURE
SHOWS THAT THERMOSTAT
IS CALLING FOR
HEAT A OR COOL ifc
SHOWS CURRENT
SYSTEM KEY POSITION
HEAT/OFF/COOL
SHOWS CURRENT FAN
KEY POSITION ON/AUTO
SHOWS THERMOSTAT IS
CALLING FOR THE FAN
SHOWS THERMOSTAT
IS COMMUNICATING
SUCCESSFULLY
M2U894
Fig. 2. Example of thermostat display.
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THERMOSTAT FEAT RES
• 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
ser’s Guide provided by your Energy
tility or systems provider.
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Special Energy Saving Features
The EnergyPro™ Thermostat supports
Demand Response and Price Response
Programs from your Energy Utiity. If you have
any questions concerning the appication of this
thermostat or these specia programs and
features, pease contact your oca Energy
Utiity.
Demand Response
If your utiity offers a Demand Response
Program, this thermostat can be managed by
your utiity to reduce your energy consumption
during times of peak demand. When your
thermostat is heping your Energy Uti ity to
manage energy in your community, the word,
SAVE, is dispayed on the thermostat as shown.
If you have any questions about the app ication
69-1538 i

of this thermostat or these specia programs
and features, p ease contact your oca Energy
Utiity.
5AI/E 1 Ï
Room
System
■ o : ^ coo
3 !
Sat
Fan -------
Wake DST : î® Auto
M2 09 01
3

Pre-Cool and Pre-Heat
Y our E nergy U ti ity m ay decide to use the
P re-coo /P re -he a t feature to s ig h t y raise or
ow er you r hom e tem p e ra tu re setting
im m edia te y prior to a D em and R esponse
event to m inim ize the effect on yo ur com fort.
W hen th e P re-heat o r P re-coo option is in
effect, the th e rm o stat d isp ays PrE.
- System
PrE
Room
■ O ■ tool
3 j
Tue
Fan
Wake DST I î t Auto
M20902

Price Response
If yo u r uti ity offers a P rice R esponse Program ,
th is th erm o stat w orks w ith yo u r E nergy U ti ity to
inform you o f the rate in effect at any given tim e
and a utom a tica y adjust yo u r energ y use for
each rate. T he rate in effect is indicated on the
th e rm o sta t disp ay as show n (C ritica , Hi, Med,
and Lo). This typ ica y invo ves contro ing yo u r
hom e at a higher te m p e ra tu re during coo ing
season and a ow er tem p e ra tu re during heating
season to reduce energ y consum ption.
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- System
Critica
i n.nn®
IU-UU
■ O ■ Doo
3 I
Tue Room
l" Fan
Wake DST : i* Auto
M20906
Disp ay shows Critica rate in effect.
Hi
iwnAMIS
Room
System
■ O ' $ Coo
3 j
Tue
Fan ------
Wake DST ; Auto
M20903
Disp ay shows High rate in effect.
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Med
i n - n t r ~ I E
Room
System
■ q! Sfr Coo
J !
Tue
1"" Fan ------
Wake DST i * t Auto
M20904
Disp ay shows Medium rate in effect.
/G O D
Room
System
■ O ' Coo
1 \
Tue
Fan
Wake DST i ^ Auto
M20905
Disp ay shows Low rate in effect.

My Choice
T here m ay be tim es w hen you need to cance
an energy-saving event such as D em and
R esponse, P re -h e at or Pre-coo . Y our E nergy
U ti ity m ay offer a program th a t in corporates the
M y C hoice feature. To use M y C hoice and
cance an en e rgy-saving event, press and ho d
R un P rogram key fo r three seconds unti the
th e rm o stat disp ays Done.
j ___ r
LIL.11 f!_
1

If the uti ity does not offer the M y C hoice
feature, pressing and ho ding the R un P rogram
key w i not cance the ene rgy-saving event.
C a yo u r E nergy U ti ity provider for
fu rth e r inform ation.
f Run *1
I Program I
OPERATING YO R
THERMOSTAT
Y our new th e rm o stat saves energ y and keeps
you com fortab e at th e sam e tim e. You m ay be
w onde rin g h o w to program yo u r th e rm o stat and
how to use som e m ore tim e and energy-saving
features. First, et’s ook at fe a ture s y o u ’ be
using often, ike setting the S yste m and Fan
keys, h o w to override the current program m ing
m ode or to ho d the th erm o stat at a specific
tem p e ra tu re w hi e you go on vacation. You can
1 69-1538

even program the thermostat to return to your
regu ar programming schedue on your ast day
of vacation so you are comfortab e when you
return and yet save energy whi e you are away.
SETTING THE CLOCK
Setting Current Day and Time
IMPORTANT
Always press keys with your fingertip
or si ilar blunt tool. Sharp instru ents
like pens and pencil points can
da age keyboard.
On initia powerup or after an extended power
oss, “1:00 PM” f ashes on dispay unti a key is
pressed.
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1. Press Set Current Day/Time key. (Set Current]
J J ^Day/TIme J
i. n r i
i-u u p m
Mon
Press Set Current Day/Time key to show information
disp ayed.
Setting the c ock can be contro ed as part of
the system using two-way
RF communication; then
the time is automatica y
updated.
2. Press Day key unti current
day dispays.
2