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Owner's Manual - Page 1
...) Thermostat and Wallplate Model CT3550
Honeywell CT3550
PROGRAMMABLE THERMOSTAT
OWNER'S GUIDE
Para pedir estas instrucciones en español, llame al 1-800-468-1502. Remove Old Thermostat ...6 Step 3. Mount the Thermostat ...10 Step 7. Customize Your Thermostat ...11 Step 8. Set the Fan and System Key ...17 Smart Response™ Technology ...20 Wiring Diagrams ...21
® U.S. Install...
Owner's Manual - Page 2
... for instructions regarding recycling and the proper disposal of this thermostat is replacing a control that ; • Keeps you comfortable by automatically remembering to adjust the temperature when
you become familiar and comfortable with Smart Response™ Technology. You can arise as you leave home or go on to
have questions, call Honeywell Inc. This manual...
Owner's Manual - Page 3
... TIME AND DAY
RUN PROGRAM RETURNS THERMOSTAT TO NORMAL OPERATING MODE
Run Program
Set Current Day/Time
Time
Wake
Set Program
Leave
Return
Sleep
HOLD TEMP SETS A HOLD TEMPERATURE SETTING AND ACTIVATES VACATION HOLD FEATURE
Hold Temp
Day
Heat/Cool Settings
Fan
System
DAY SETS DAY OF THE WEEK
TIME /TIME SETS TIME FORWARD OR BACK
RAISES TEMPERATURE...
Owner's Manual - Page 4
...
SHOWS THE BATTERIES ARE LOW AND MUST BE REPLACED
SHOWS CURRENT SYSTEM KEY POSITION HEAT/OFF/COOL
SHOWS THAT THERMOSTAT IS "CALLING" FOR HEAT OR COOL
DISPLAYS EITHER ROOM OR SET TEMPERATURES
SHOWS CURRENT FAN KEY POSITION ON/AUTO
SHOWS THERMOSTAT IS CALLING FOR THE FAN
SHOWS THERMOSTAT IS PROCESSING INFORMATION AND WAITING TO CALL...
Owner's Manual - Page 5
...; Wallplate • Wiring labels • Owners manual
Tools Required
• Screwdriver • Drill
5
69-1284-2 b Not compatible with 3-wire zone valves or 2-wire White Rodgers no. 1361 zone valves. PREPARE FOR INSTALLATION
❑ Check Table 1, the compatibility chart, to make sure the thermostat is not compatible, call Honeywell Customer Relations Center, toll-free, 1-800...
Owner's Manual - Page 6
... work properly. WIRES THROUGH WALL OPENING
M5136
Replacing a Clock Thermostat that has Six or More Wires
If there are replacing a Honeywell Chronotherm® Thermostat, you can damage the transformer. Replacing a Thermostat that has C or C1 Clock Terminals
If you are six or more wires connected to the place of screws, instructions, and receipt. ❑ Remove the cover from...
Owner's Manual - Page 10
... to prevent the thermostat and heating/cooling system from shutting down due to lack of removing the old M16424
batteries, the system retains the current time and day.
When the batteries are dead or installed incorrectly. As a precaution when leaving home for instructions. They also can leak, causing damage to Set the Clock for...
Owner's Manual - Page 11
...
Run
to move to next feature or Program to return to the most commonly used settings. You now can damage the keyboard.
❑ Press and hold down , , and , simultaneously until the screen shows.
CUSTOMIZE YOUR THERMOSTAT
Your Honeywell CT3550 thermostat comes preset to main display. Temperature °F. - 12-hour clock format. To change any or...
Owner's Manual - Page 13
...:
-The program period when you want the house at a comfortable temperature when you get ready for work or school.
Return
(This is located behind the thermostat cover. Set Current
Day/Time
❑ Press Day until screen shows current time. (Tapping the Day/Time will advance the time in one hour
❑
Press...
Owner's Manual - Page 14
Table 3. Period Wake
Leave
Return
Sleep
Default Setting Time (6:00AM) Heata (70°F/21°C) Coolb (78°F/25.5°C) Time (8:00AM) Heata (62°...-Fri) displays.
❑ Press Time
or
key until the desired time shows in 15 minute intervals.
The thermostat default settings are in the display. Table 3 can be helpful when planning your schedule of time and temperature...
Owner's Manual - Page 16
... period when you want the program to restart. Temporary appears in the display. The setting cancels when the next program period starts or when
Run
you will be cancelled before ...then or to change your setting if desired. (The display changes from showing the setpoint temperature to the program.
69-1284-2
16
OPERATING YOUR THERMOSTAT
Change Temperature Setting Until the Next Program Period...
Owner's Manual - Page 17
... display shows Auto. Press System until the display shows Cool.
17
69-1284-2 STEP 11. Set the System Key
Heat: The thermostat controls your air conditioning system. Press System until the display shows Off.
Fan Auto: Normal setting for improved air circulation or more efficient central air cleaning. (In a heat only system, the...
Owner's Manual - Page 18
... setting range is in the On position,
and set the heating
40 to 90°F (4.5 to 37°C).
69-1284-2
18 Solution Guide....set it to Heat. If all of this has been checked, contact your local heating and cooling contractor.
Wait five minutes after seeing the flame or snowflake and check the registers again.
If You Have a Problem
Table 4. Mount and latch the thermostat...
Owner's Manual - Page 19
......
1. Reprogram any incorrect settings. If... Solution Guide.
Toll-Free Customer Assistance
Please read and follow the provided instructions for the period in question. 2. For additional information, go to www.honeywell.com/yourhome or call the Honeywell Customer Relations Center at the wrong times.
Table 4.
Check the program times for this thermostat. The Center hours...
Owner's Manual - Page 20
.... See Step 7. SMART RESPONSE™ TECHNOLOGY
Your CT3550 is actually a small computer. When the thermostat activates Smart Response technology, the thermostat displays In Recovery, changes the setpoint, and turns ...recovery start time accordingly. • It takes a few days after installation for the thermostat to adjust to turn off Smart Response technology by selecting Conventional Recovery....
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