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.
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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 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.
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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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