Page 3 - CONTENTS; ADAPTIVE INTELLIGENT RECOVERY
3 69-1536–3 CONTENTS USING THIS GUIDE .......................................................................................................................................... 5 FEATURES ...................................................................................................................
Page 5 - USING THIS GUIDE; than one thermostat is used with the W8665E RF Zone
5 69-1536–3 USING THIS GUIDE The T8665A is a multi-functional thermostat. This means it can be used in single or multi-zone applications. The following symbols will help you identify the features that apply to your system: – Triple layer of thermostats with the word, zoning, below. These features ar...
Page 6 - FEATURES
6 69-1536–3 FEATURES • Adaptive Intelligent Recovery TM 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 overri...
Page 7 - KEYBOARD AND DISPLAY DESCRIPTION; Keyboard; or decrease; Display
7 69-1536–3 KEYBOARD AND DISPLAY DESCRIPTION Keyboard The keyboard is located behind the thermostat cover. Three frequently used keys, increase ▲ or decrease ▼ and , are located next to the display. See Fig. 1. Display The thermostat displays important information such as day, time, schedule period,...
Page 9 - AM; Set Program Set Day/Time
9 69-1536–3 Fig. 2. Example of thermostat display. Auto System Fan Off Auto Wake Mon Room AM Recovery Hold forFilter Days On DST Cool TueWedThuFriSatSun Leave Return Sleep Set Program Set Day/Time Wait Temporary Setting Heat M20886 DISPLAYS EITHER CURRENT TIME OF DAY OR PROGRAM TIMES SHOWS THERMOSTA...
Page 10 - CONTROL
10 69-1536–3 ADAPTIVE INTELLIGENTRECOVERY TM CONTROL Your new thermostat is so smart, it’s almost human. You perceive temperature from a variety of sources, not only from the air in the room, but also from your surrounding walls, windows and furnishings. Humans feel differences in temperature as sli...
Page 11 - Optimum Comfort and Energy Savings
11 69-1536–3 After installation or new schedule programming, your thermostat learns from experience. Each day it checks how closely it hit the recovery target (for example, 70 ° at 6:00 AM) and adjusts the next day’s recovery start time accordingly. After four to eight days, the thermostat has adjus...
Page 12 - Fig. 4. Explanation of Adaptive Intelligent Recovery
12 69-1536–3 Fig. 4. Explanation of Adaptive Intelligent Recovery TM control. At 4:00 AMRecovery Begins At 5:00 AMRecovery Continues At 6:00 AMRecovery Continues At 7:00 AM System Operating in Comfort Mode ENERGYSAVINGSPERIOD RECOVERY FROM ENERGY SAVINGS COMFORTPERIOD TIME TEMPERATURE THE THERMOSTAT...
Page 13 - OPERATING YOUR THERMOSTAT; Setting System and Fan Keys; CAUTION; Equipment Damage Hazard.
13 69-1536–3 OPERATING YOUR THERMOSTAT Your new thermostat saves energy and keeps you comfortable at the same time. By now you may be wondering how to program your thermostat and how to use some more time and energy-saving features. First, let’s look at features you’ll be using often, like setting t...
Page 14 - Setting the System Key; Setting the Fan Key
14 69-1536–3 Setting the System Key Press the System key until the desired system (Heat, Off, Cool, or Auto) displays. Heat: The thermostat controls the heating. Off: Both the heating and cooling are off. Cool: The thermostat controls the cooling. Auto: The thermostat automatically changes between h...
Page 15 - Setting Temporary Temperatures
15 69-1536–3 Setting Temporary Temperatures You can override the current schedule period to temporarily change the temperature setting until the next schedule period, or you can change and hold the temperature setting indefinitely. You can also change the temperature setting until a designated day a...
Page 17 - Changing and Holding Temperature Setting Indefinitely
17 69-1536–3 M14565 System Fan Heat Auto Heat Setting Changing and Holding Temperature Setting Indefinitely 1. Press Hold Temp key once. 2. Press increase ▲ or decrease ▼ to change the tempera- ture setpoint, if desired. NOTE: The display changes from the setpoint to the room temperature after appro...
Page 18 - IMPORTANT
18 69-1536–3 Changing Temperature Setting Until a Designated Day and Period (Vacation Hold) Hold Temp Press the Time or Time key to select the number of vacationdays. Example display shows 18 vacation days. TIME M14833 Wake System Fan Heat Auto Hold for Heat Days Setting ZONING M14834 Wake System Fa...
Page 20 - Pressed the wrong key?; You can always press
20 69-1536–3 5. Press Heat/Cool Settings key to change between heat and cool settings. 6. Press increase ▲ or decrease ▼ to adjust the temperature setting, if desired (for example, if cool is set at 84 ° , cooling equipment operates when the room temperature is above 84 ° F). To cancel the Vacation ...
Page 21 - Replacing the Batteries; The batteries are located in the wallplate. See illustration.; WALLPLATE
21 69-1536–3 Replacing the Batteries This thermostat uses three AA alkaline batteries. Batteries must be installed for programming and operation ofthe thermostat and heating (cooling system). The batteries are located in the wallplate. See illustration. M10622 INSTALL 3 AA ALKALINE BATTERIES AS SHOW...
Page 23 - Displaying Current Settings; setpoint of the mode not currently in use.
23 69-1536–3 Using the (Information) Key The (information) key provides information at your fingertips. The sequence of key presses is: • Current setpoint of mode in use (Heat or Cool). • Setpoint of mode not currently in use. Displaying Current Settings Press key once to check the current temperatu...
Page 24 - Display or Reset Filter Timer Settings
24 69-1536–3 Display or Reset Filter Timer Settings 2. Press the Timer ▲ key to reset the timer. 3. Press the Run Program key. Note: You can view the number of days remaining at any time by pressing the i key three or four times. If more than one timer is active, all active timers show sequentially ...
Page 25 - SETTING THE CLOCK; Setting Current Day and Time; On initial power up or after an extended power loss, “1:00 PM”
25 69-1536–3 SETTING THE CLOCK Setting Current Day and Time On initial power up or after an extended power loss, “1:00 PM” flashes on the display until a key is pressed. 1. Press Set Current Day/Time key. Press Set Current Day/Time key to show information displayed. Set Current Day/Time M14580 Set D...
Page 27 - Daylight Saving Time
27 69-1536–3 Daylight Saving Time NOTE: If the current time is Daylight Saving Time, press Daylight Time key to display “DST.” Daylight Time M14583 Set Day/Time AM DST Tue Press Daylight Time key to set Daylight Saving Time. Pressing Daylight Time key more than once within a five minute period scrol...
Page 28 - PROGRAMMING YOUR THERMOSTAT; -Day Program and Operation
28 69-1536–3 PROGRAMMING YOUR THERMOSTAT 7-Day Program and Operation Your thermostat is 7-day programmable. 7-day programming means you can set your thermostat for four periods (Wake, Leave, Return and Sleep) and up to eight temperatures (four Heat and four Cool) for each day of the week. Each day c...
Page 29 - -Day Preprogrammed Schedule; Write the time you want for each program period.
29 69-1536–3 7-Day Preprogrammed Schedule Your thermostat is preprogrammed with the schedule shown in Table 1 (same schedule for all days of the week). You may keep this schedule or develop your own. Before starting the programming procedure, use Table 2 to plan your schedule. Instructions: 1. Write...
Page 30 - Customizing Your Own 7-Day Schedule
30 69-1536–3 Customizing Your Own 7-Day Schedule Table 2. Your 7-Day Schedule. W A K E L E A V E R E T U R N S L E E P S U N D A Y TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C M O N D A Y TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN A...
Page 31 - About Power Outages...; product. The time and day information is; retained for a minimum of twenty minutes; during a; Programming the First Day
31 69-1536–3 About Power Outages… Don’t worry! Your thermostat retains the schedule (preprogrammed or your own) for the life of the product. The time and day information is retained for a minimum of twenty minutes during a power outage. After a longer power outage, you may need to set the current ti...
Page 32 - Press Day key until the desired day displays.
32 69-1536–3 1. Press the Wake key. M14586 Set Program Wake System Fan Heat Auto AM Heat Tue Setting Press the Wake key to enter the program mode. Exampledisplay shows 6:00 AM on Tuesday with Heat set to 70 ° F. M14588 Set Program Mon Wake System Fan Heat Auto AM Heat Setting Day Press Day key to se...
Page 34 - for the entire schedule period.
34 69-1536–3 5. Press Fan key to modify fan operation. Selecting Auto means the fan runs only when the heating or cooling equipment is operating. Selecting On means the fan runs continuously for the entire schedule period. 6. Press Heat/Cool Settings key to make selections for the opposite system se...
Page 36 - Copying a Day; Press Wake, Leave, Return or Sleep key to enter program mode.
36 69-1536–3 Copying a Day The thermostat must be in the program mode to use the copy feature. Go to step 2 if the thermostat is already in the program mode (set program displays in the upper left corner). 1. Press Wake, Leave, Return or Sleep key to enter program mode. 2. Press Day key to select th...
Page 37 - Press Day key until the day to be copied to is displayed.
37 69-1536–3 3. Press Copy key. Press Copy key to copy a day schedule into memory. Example display shows Monday schedule was copied into memory. Day M14595 Mon Wed 4. Press Day key until the day to be copied to is displayed. Copy Press Day key again to select the day to copy to. Example display show...
Page 39 - Clearing a Program Period; The thermostat must be in the program mode
39 69-1536–3 2. Press Day key until the desired day displays. Clearing a Program Period The thermostat must be in the program mode to use the clear feature. Go to step 2 if the thermo- stat is already in the program mode (Set Program displays in upper left corner). 1. Press Leave, Return or Sleep ke...
Page 40 - Press and hold Leave, Return or Sleep key until the start
40 69-1536–3 You do not have to program a replacement time for the remaining periods; for example, Wake and Sleep. If you clear only the Leave and Return periods for Saturday (or any day), the thermostat remains in the Wake period for all of Saturday until the Sleep period. 4. Repeat steps, as neces...
Page 41 - TROUBLESHOOTING; continued
41 69-1536–3 TROUBLESHOOTING continued S y m p t o m P o s s i b l e C a u s e A c t i o n Display does not come on. Thermostat is not being powered. • Check if the batteries are correctly installed. • Check if the thermostat is mounted and latched on the wallplate—mount and latch the thermostat on ...
Page 43 - WARRANTY
43 69-1536–3 WARRANTY Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for aperiod of one (1) year from the date of purchase by the consumer. If, at any time during the warranty period, the product is defective...
Page 45 - CUSTOMER ASSISTANCE; Honeywell Customer Relations at
45 69-1536–3 CUSTOMER ASSISTANCE After reading this guide, if you have any questions about the operation of your thermostat, please contact the Honeywell Customer Relations at www.honeywell.com/yourhome or 1-800-468-1502. For service, contact your local heating and cooling contractor.
Page 46 - FEDERAL COMMUNICATIONS COMMISSION (FCC) STATEMENT
46 69-1536–3 FCCID: CFS8DL5800STAT CANADA: 1748A 12111 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and(2) This device must accept any interference received, including interference that m...
