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Honeywell CT3300 Support Question

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Question posted by mgpiegari on April 5th, 2013

Change From Celsius To Fahrenheit

How do I change the temperature from Celsius to Fahrenheit on my model CT3300 automatic thermostat?

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Related Honeywell CT3300 Manual Pages

Owner's Manual - Page 1

...Customer Relations at 1-800-468-1502. Your new thermostat will automatically control the temperature in your new Honeywell MagicStat® Programmable Thermostat. Registered Trademark Copyright © 2001 Honeywell &#...(20 to 30 Vac) Thermostat and Mounting Plate Model CT3300 Welcome to the world of Contents Installation 2 Programming 11 Operation 17 Change the clock for Daylight/ 17...
Owner's Manual - Page 2

... include warm air furnaces and hot water. Multistage Conventional A heating or cooling system with the CT3300, the table recommends an alternate Honeywell model. Fig. 1 MERCURY SWITCH Recycling thermostat If you are produced from the same outdoor unit (compressor) with auxiliary or backup heat. Contact your local waste management authority for instructions regarding recycling...
Owner's Manual - Page 3

... not operate the cooling system when the temperature outdoors is a problem with 3/16-inch or 7/32-inch drill bit • Pencil Optional tools • Wire cutter/stripper or sharp knife • Level • Electrical tape c. Save your receipt and make sure you install the new thermostat. Step 1. Required tools and supplies •...
Owner's Manual - Page 4

... the terminal that are not connected to the C or C1 terminals. • The old thermostat has 6 or more recycling information. ✓ Check your progress Your wall should now look like Fig.... 4. 4 INSTALLATION 69-0654-5 Unscrew and remove the old thermostat's mounting plate from the old thermostat and wrap the wires around a pencil to the heating/cooling system, either at...
Owner's Manual - Page 5

.... • For plaster or wood, drill two 7/32 inch holes. Install the mounting plate Fig. 5 Fig. 6 M20139 M20129 Fig. 7 a. Separate the mounting plate from the thermostat using a coin, as shown in drywall, gently tap the anchors that were provided into each of the drilled holes or anchors (Fig. 6). Level the mounting...
Owner's Manual - Page 6

... page to display the temperature in degrees Celsius (°C), adjust screw C out one turn. c. d. You can install the batteries and program your new thermostat for the type of fuel... Note: These screws are factory-set to maintain accurate temperature control, minimize swings in degrees Fahrenheit (°F). If you can wait until the thermostat is set for your type of the room, and ...
Owner's Manual - Page 7

...WIRE VISIBLE HERE M20126 INSTALLATION 7 Note: If the letters on the old thermostat terminals do not match the letters on the furnace.) High-efficiency furnace such as shown in Fig. 9. Hold... the thermostat as a 90% or greater AFUE (Average Fuel Utilization Efficiency) unit Hot water boiler Electric furnace...
Owner's Manual - Page 8

... page 12. 69-0654-5 Align the tabs at the top of the thermostat with the tabs at the top of the thermostat (Fig. 12). M20130 Step 7. b. e. Press the lower edge of the case to flash a default time and the current temperature (Fig. 14). Step 6. Replace the battery door. Install the batteries Fig. 13...
Owner's Manual - Page 9

...these wires to your system. See the compatibility table on page 4 at step 2e. Three thermostat wires If you disconnect the wires, do not label them where they will not interfere with... power to insulate the wires. a. Wrap the wires separately, using the old thermostat's fan switch, the 3300 thermostat will not connect these wires to your heating/cooling system is turned off the ...
Owner's Manual - Page 10

... jumper between the R and Rc terminals (Fig. 15). INSTALLED). Power Power for an alternate thermostat model. REMOVE IF 5-WIRE SYSTEM R Rc WY G M20127 Old thermostat terminals that do not match new thermostat terminals Use the table below to new terminal thermostat terminal Description R, RH, 4, V Rc, R W, W1, H Y, Y1, M G, F O B C, X, B W2, H2 Y2 R* Rc* W Y G Do not continue...
Owner's Manual - Page 11

...System Cool Off Heat 18 CT3300 WITH DOOR CLOSED 19 M20161 Descriptions 1 Fan switch-Selects automatic or continuous fan operation (... Time-Current time or program time. 10 Temperature-Room or programmed temperature. 11 HEAT/COOL-Indicates if the heating ...-Returns thermostat to operating mode. 16 Hold Temp-Holds a selected temperature (page 19). 17 Present Setting-Displays the temperature setting...
Owner's Manual - Page 12

... the weekends (Saturday and Sunday). e. Learn about the programming features Your CT3300 thermostat allows you to two program periods for both a heating season and a cooling season. • During the heating season, you can set the normal room temperature higher and the energy-saving temperature lower. • The reverse is displayed. Step 1. The current time...
Owner's Manual - Page 13

...temperature for this period. You can set an energy-saving temperature for this period. The time between returning home and going to program times and temperatures for the weekday SLEEP schedule will automatically...you left off. 69-0654-5 PROGRAMMING 13 If you decide not to program your thermostat, it will remain in effect until you reach the program period where you decide...
Owner's Manual - Page 16

... that your cooling system works IMPORTANT: To avoid damaging the compressor in the air conditioner, do not operate the cooling system when the temperature outdoors is 10°F (6°C) below 50°F (10°C). Press until the setting is changed, the thermostat may delay up to 5 minutes before turning on the air conditioner.
Owner's Manual - Page 17

...°F (6°C) above room temperature. b. Use this setting for improved air circulation during special occasions or for more efficient air cleaning. Press until the correct time is displayed. The time is displayed. Switch Fan Setting Result Auto On A single-speed fan turns on the bottom of the thermostat faceplate (Fig. 16 page...
Owner's Manual - Page 18

...are dead or incorrectly installed and you will have to reprogram the thermostat. Heat The thermostat controls your air conditioning system. Note: If "bAt Lo" ...continues to display after replacing the batteries, set the System switch to OFF, insert the batteries backwards, wait for longer than a month, change...
Owner's Manual - Page 19

... as when you programmed resumes when the next scheduled program period is displayed. b. The heating/cooling schedule that the change to the temperature lasts for a few seconds and then resumes reading the current room temperature. Press . The TEMPORARY indicator is displayed indicating that you go on vacation. "HLd" is displayed (Fig. 28). Note...
Owner's Manual - Page 21

Press . b. c. Change a program permanently Follow the steps for programming the heating schedule or programming the cooling schedule on pages 14 and 15. 69-0654-5 Fig. 32 Fig. ...
Owner's Manual - Page 22

...ASKED QUESTIONS 69-0654-5 The display should come on . • You have reached the temperature limit. Contact a heating contractor for the period in question. Reprogram if necessary. • ... room temperature and the SYSTEM ON arrow is displayed, the thermostat is higher than 88°F (31°C) during programming Display shows flashing or steady "bAt Lo" Temperature change occurs ...
Owner's Manual - Page 23

... an air conditioning contractor for instructions. If desired, change the temperature setting. During recovery from setback or setup, setting and displayed room temperatures may differ for up to 10 minutes after recovery period. Before you need additional assistance, call , please have the following information available: • Thermostat model number and serial code (located under the...

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