Summary of the content on the page No. 1
®
MagicStat CT3300 Programmable Thermostat
Installation and Programming Instructions
Weekday/Weekend (5-day/2-day)
Programmable Heat and/or Cool
Low Voltage (20 to 30 Vac)
Thermostat and Mounting Plate
Model CT3300
Table of Contents
Installation 2
Programming 11
Operation 17
Welcome to the world of comfort and energy savings
Change the clock for Daylight/ 17
with your new Honeywell MagicStat® Programmable
Standard Time
Thermostat. Your new thermostat will automatically
control the temperature
Summary of the content on the page No. 2
Fig. 1 Recycling thermostat If you are removing an old thermostat that contains mercury in a MERCURY SWITCH sealed tube (Fig. 1), do not place the old thermostat in the trash. Contact your local waste management authority for instructions regarding recycling and the proper disposal of the old thermostat. M3701 Installation Verify that you have the right thermostat Make sure that the CT3300 is the right thermostat for your heating/cooling system. Read the compatibility chart below to deter
Summary of the content on the page No. 3
Step 1. Prepare for installation a. Carefully unpack your new thermostat. Save your receipt and make sure you have the following parts: Thermostat and mounting plate Screws and anchors Labels Installation and Programming Instructions b. Gather the needed tools and supplies listed below. Required tools and supplies Optional tools Two AA alkaline batteries. Honeywell recommends Wire cutter/stripper or sharp knife Energizer® batteries. Level Screwdriver Electrical tape Hand or
Summary of the content on the page No. 4
Step 2. Remove the old thermostat Fig. 2 a. Turn off power to the heating/cooling system, either at the furnace or at the fuse/circuit breaker panel. b. Remove the cover of your old thermostat (Fig. 2). c. Unscrew and remove the old thermostat’s mounting plate from the wall, but do not disconnect the wires. d. Inspect the old thermostat wiring. If the wiring meets any of M20140 the following conditions, see the special wiring instructions on page 9. The old thermostat is a clock thermo
Summary of the content on the page No. 5
Rc G R W Step 3. Install the mounting plate Fig. 5 a. Separate the mounting plate from the thermostat using a coin, as shown in Fig 5. b. Position the mounting plate on the wall. Be sure the mounting plate sits flush against the wall and none of the wires are trapped behind it. c. Level the mounting plate and use a pencil to mark the center of the mounting plate’s screw holes. M20139 d. Remove the mounting plate and drill holes at the locations you marked. For drywall, drill two 3/16 inc
Summary of the content on the page No. 6
Step 4. Set the thermostat for your type of heating system Fig. 8 IMPORTANT: Setting your thermostat correctly for your type of THERMOSTAT BACK heating system allows it to maintain accurate temperature control, HEATING SELECTING ºF OR ºC SYSTEM TYPE minimize swings in the temperature of the room, and efficiently run the fan. A C ADJUST SCREWS THROUGH HOLES DISPLAY F C–IN TO SELECT OPERATION DESIRED DISPLAY C C–OUT a. Use the FUEL SWITCH on the back of the thermostat to set
Summary of the content on the page No. 7
R W Heating system table : Setting the screw “out one turn” means turning the screw 360° counter-clockwise, or one complete turn. Note Type of system Screws A and B Fuel switch Warm air, gas, or oil heating system with an efficiency rating under 90%. Use factory setting F (The furnace efficiency rating should be on the furnace.) A–leave in B–leave in High-efficiency furnace such as a 90% or greater AFUE (Average Fuel A–out one turn F Utilization Efficiency) unit B–leave in Hot water boiler A–ou
Summary of the content on the page No. 8
Step 6. Mount the thermostat Fig. 11 Fig. 12 a. Align the tabs at the top of the thermostat with the tabs at the top of the mounting plate (Fig. 11). b. Press the lower edge of the case to latch the bottom of the thermostat (Fig. 12). M20131 M20130 Step 7. Install the batteries IMPORTANT: Batteries must be installed for programming and Fig. 13 operation of the thermostat and heating/cooling system. Honeywell recommends using Energizer® batteries. a. Make sure that the System switch is s
Summary of the content on the page No. 9
Special wiring instructions A clock thermostat with C or C1 terminals A clock thermostat has one or two extra wires attached to the C or C1 terminals that allow the clock to operate. These wires are not used during the installation of your new 3300 thermostat and must be insulated from each other to avoid damaging your electrical circuit. a. Make sure that power to the heating/cooling system is . turned off b. Locate the wires that are connected to the clock terminals marked C or C1. c. As
Summary of the content on the page No. 10
WY G R R c Five wires connected to the old thermostat Your new thermostat has a factory-installed metal jumper between the R and Rc terminals (Fig. 15). Remove the jumper before wiring the R and Rc terminals. JUMPER (FACTORY- Fig. 15 INSTALLED). REMOVE IF 5-WIRE SYSTEM M20127 Old thermostat terminals that do not match new thermostat terminals Use the table below to wire the new thermostat. Old thermostat Connect to new terminal thermostat terminal Description R, RH, 4, V R* Power Rc, R Rc* P
Summary of the content on the page No. 11
Programming Faceplate illustration and descriptions Fig. 16 9 10 Descriptions, continued 5 Clear–Cancels the currently displayed program (page 8 11 HEAT 20) and clears the usage counter (page 21). AM PM COOL 7 12 MO TU WE TH FR SA SU SET 6 Time Ahead and Back–Sets the time ahead and back WAKE LEAVE RETURN SLEEP TEMPORARY 6 13 (page 12). Time Temp 5 14 7 Program periods–Current program period or period Set Run Ahead Ahead W Warmer armer being programmed (page 13). Clock/Day Progr
Summary of the content on the page No. 12
Step 1. Set the current time and day Fig. 17 a.Press once. The time is displayed (Fig. 17). b. Press and hold or until the current time is displayed. Fig. 18 c.Press again. The day is displayed (Fig. 18). d. Press and hold or until the current day is displayed. Fig. 19 e.Press once. The current time and day and the current temperature are displayed (Fig. 19). Step 2. Learn about the programming features Your CT3300 thermostat allows you to program schedules for both a heating season
Summary of the content on the page No. 13
Program period Description When available The time when you get up and get ready to leave your home. Weekdays and weekend WAKE You can set the system at a comfortable temperature for this period. The time when you are regularly away from home. You can set Weekdays only LEAVE an energy-saving temperature for this period. The time between returning home and going to bed. You can Weekdays only RETURN set the system at a comfortable temperature for this period. The time when you are sleeping. Y
Summary of the content on the page No. 14
Step 3. Program the heating schedule a. Write in the times and temperatures that you want to program for your heating schedule. Heating Program WAKE LEAVE RETURN SLEEP Schedule period Suggested Time 6:00 AM 8:00 AM 6:00 PM 10:00 PM Settings Temp 70°F (21°C) 62°F (16.5°C) 70°F (21°C) 62°F (16.5°C) Weekday Time (Mon–Fri) Temp Weekend Time (Sat–Sun) Temp b. Set the System switch to HEAT. Fig. 20 c.Press once. A blank schedule is displayed (Fig. 20). Fig. 21 d. Set the Monday–Friday WAKE time by
Summary of the content on the page No. 15
Fig. 23 g. Press until the weekend schedule is displayed (Fig. 23). h. Set the Saturday and Sunday WAKE time by pressing or until the desired time is displayed. Fig. 24 i. Set the Saturday and Sunday WAKE temperature by pressing or until the desired temperature is displayed (Fig. 24). j. Press again to display a blank schedule for the SLEEP program period and repeat steps h. through j. to set the program. Step 4. Program the cooling schedule a. Write in the times and temperatures th
Summary of the content on the page No. 16
b. Set the System switch to COOL. c. Repeat steps 3c. through 3k. to program the weekday and weekend cooling schedule. Step 5. Check out the system Verify that your heating system works a. Set the System switch to HEAT and the Fan switch to AUTO. Fig. 25 b. Press until the setting is 10°F (6°C) above room temperature (Fig. 25). Your heating system should start and the fan should run after a short delay. c. Press until the setting is 10°F (6°C) below room temperature. Your heating system sh
Summary of the content on the page No. 17
f. Press until the setting is 10°F (6°C) above room temperature. Your cooling system and fan should stop. g. Set the System switch to OFF and the Fan switch to AUTO. The cooling system and fan should be off. Operation Change the clock for Daylight/Standard Time a.Press once. The time is displayed. b. Press and hold or until the correct time is displayed. c.Press once. The current time and day and the current temperature are displayed. Set the Fan and System switches The switches on the
Summary of the content on the page No. 18
Switch Setting Result System Cool The thermostat controls your air conditioning system. Off Both the heating and air conditioning systems are off. Heat The thermostat controls your heating system. Replace the batteries As the batteries run low, your thermostat shows the following in the digital display: If you see: Batteries are: You should: Flashing “bAt Lo” Low Replace the batteries as soon as possible, within the month. Steady “bAt Lo” Almost dead Replace the batteries immediately. Your hea
Summary of the content on the page No. 19
Override the program settings Note: Make sure the System switch is set to either HEAT or COOL before making any changes to the schedule. Change the temperature temporarily Fig. 27 Press or until the desired temperature is displayed. The TEMPORARY indicator is displayed indicating that the change is temporary (Fig. 27). Note: A temporary change to the temperature lasts for the current program period only. The heating/cooling schedule that you programmed resumes when the next scheduled p
Summary of the content on the page No. 20
Check the current programmed temperature Fig. 29 Press to display the temperature that is programmed for the current program period. The SET indicator displays briefly along with the programmed temperature (Fig. 29). The display then returns to the room temperature. Check programs Press repeatedly to display the times and temperatures that you programmed for the weekdays (Monday–Friday). Press repeatedly to display the programmed times and temperatures for the weekend (Saturday and Su
