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TYPICAL ENERGY SAVINGS FOR REPRESENTATIVE CITIES IN THE U.S. AND CANADA
Savings for Once-A-Day
Savings for Twice-A-Day
Savings for 5°F (3°)
10°F (5°C) decrease 10°F (5°C) decrease* summer increase
30%
28%
26%
24%
22%
20%
18%
16%
14%
12%
10%
8%
6%
4%
2%
Louisville
Los Angeles San Diego
Minneapolis
Edmonton
Calgary
Halifax Vancouver Buffalo
Denver
Boston
Cincinnati
New York
San
Dallas
Des Moines
Chicago
Kansas City
Philadelphia
Portland
Francisco Atlanta
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TOTAL COMFORT TEMPERATURE MANAGEMENT WITH ADAPTIVE INTELLIGENT RECOVERY™ Congratulations! You made a smart choice when you purchased your new Honeywell Thermostat. It’s the smart thermostat that: n Keeps you comfortable by automatically calculating exactly when the furnace or air condi- tioning should go on to have the house at the desired comfort temperature by the time you wake up or return home. n Saves the maximum amount of energy and money by remembering to automatically adjust the heat or
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Table Of Contents STEP 1 Prepare For Installation .................................................................................................... 2 STEP 2 Remove Old Thermostat .................................................................................................. 4 STEP 3 Before You Program ......................................................................................................... 6 Install the Batteries..............................................................
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nn Acquire tools and items as needed (below). CROSS-RECESSED
HAND OR POWER
SCREWDRIVER DRILL WITH 3/16 INCH
DRILL BIT, IF NEEDED, TO
DRILL HOLES IN WALL MASKING TAPE, IF
WIRE CUTTER/STRIPPER OR SHARP
NEEDED, TO LABEL WIRES
KNIFE, IF NEEDED, TO STRIP WIRES AS DISCONNECTED FROM
OLD THERMOSTAT LEVEL, IF NEEDED, TO LEVEL
M878B THERMOSTAT FOR APPEARANCE 3 69-0733—3 STEP 2 Remove Old Thermostat nn Test to make certain that your heating and nn Disconnect wires from old thermostat or cool
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not allow them to touch, or you can damage your which programmable thermostats will work with transformer. Disconnect the wires and wrap your system, call Honeywell Customer Assis- them separately using electrical tape; do not tance at 1-800-468-1502. wrap them together. Place the wires where they will not interfere with the operation of the new Three thermostat wires? thermostat. Record the colors and terminal des- If you have three wires for heating only and can ignation labels of the remainin
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IMPORTANT: Although the thermostat has a Adaptive Intelligent Recovery™ low battery indicator, replace the batteries Selection once a year to prevent leakage and to prevent Before you program your thermostat, you must the thermostat and heating/cooling system decide if you want to leave the thermostat at from shutting down due to lack of battery the factory-set Adaptive Intelligent Recovery™ power. setting, or adjust it to conventional recovery. If you choose conventional recovery, adjust screw
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STEP 4 Program The Thermostat After the batteries are installed, the thermostat work or school. (This will be a higher tem- can be easily programmed in your hand before perature during heating season, or a lower it is installed on the wall. temperature during cooling season.) DAYTIME is the time period you can set for an If you would prefer to program the thermostat energy-saving temperature while you are after it is installed on the wall, skip to page 16, away at work or school. (This will
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Personal Programming Chart Weekday Program 1 1 START HEATING COOLING PERIOD TIME TEMPERATURE TEMPERATURE (6:00 AM) (70°F [21°C]) (78°F [26°C]) MORNING _____________________ _____________________ DAYTIME ______________ ______________ _____________ EVENING ______________ ______________ _____________ (10:00 PM) (60°F [16°C]) (78°F [26°C]) NIGHT _____________________ _____________________ _____________________ Saturday Program 1 1 START HEATING COOLING PERIOD TIME TEMPERATURE TEMPERATURE (6:00 AM) (
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When programming your new thermostat, use this guide. Batteries are required for programming and operation. SET PRESENT DAY Set Press and release then until present day shows. Present Day Day/Time SET PRESENT TIME a Set Press and release then until present time shows. Present Time Day/Time HEATING PROGRAM a a Morning Time Temp With system switch at HEAT, press and release . Use and to program Mon-Fri MORNING time and temperatu
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For operating or making changes, use this guide. a Temp Temporarily Change temperature for current period only— ; TEMPORARY indicator shows on display, and cancels itself at next scheduled change. To cancel sooner, you may Run press . Program a Hold Hold a temperature indefinitely (such as on vacation)— , Temp Hold appears Temp Run on display; to cancel, press . Program Current Setting Check current temperature setting—
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nn Remove wallplate from wall, and drill LEVEL 3/16 inch holes in wall (if drywall) as marked. For firmer material such as plaster or wood, drill 7/32 inch holes. Gently tap anchors (provided) into drilled holes until flush with the wall. nn Reposition wallplate over holes, pulling wires through wiring opening. Loosely insert two mounting screws into holes. M611B nn Level for appearance only; thermostat functions properly even when not level. Tighten mounting screws. 17 69-0733—3 STEP 6 Adjust
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RECOVERY
3A SELECTION IMPORTANT: When using a high efficiency ADAPTIVE
IN
TM (FACTORY SETTING) INTELLIGENT furnace such as a 90% or greater AFUE OUT
CONVENTIONAL 1 TURN (Average Fuel Utilization Efficiency) unit, BACK OF THERMOSTAT leave screw 1A in and screw 1B out one turn. nn The thermostat is set to display the time as a 12-hour clock and the temperature in degrees Fahrenheit. If a 24-hour clock (e.g., military 3A 1A 1B time) or degrees Celsius readings are desired, 2A 2B adjust screws
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STEP 8 Wire Wallplate Terminals NOTE: All wiring must comply with local codes nn Loosen the terminal screws and slip each and ordinances. If unsure about household wire beneath its matching terminal. Either wiring procedures, call your local heating/air straight or wraparound wiring connections are conditioning contractor. acceptable (see illustration). Tighten terminals. Refer to masking tape labels you placed on nn Plug the hole in the wall with insulation to wires when you removed your ol
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3-WIRE HEAT ONLY (JUMPER INTACT) 5-WIRE HEAT/COOL (JUMPER REMOVED) THERMOSTAT THERMOSTAT R W G R C Y R W G R C Y HEATING
COOLING
HEATING
FAN
RELAY OR
FAN
CONTACTOR
RELAY OR
RELAY RELAY VALVE COIL COIL VALVE COIL 1 1 1 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED. M 615A M613A AND OVERLOAD PROTECTION AS REQUIRED. 23 69-0733—3 STEP 9 Mount The Thermostat AM MON HEAT ON DAYTIME A. ENGAGE TABS BETWE
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STEP 10 Check Thermostat Operation After Programming And Installing HEAT OFF COOL HEATING Move the system switch to HEAT and Do not check heating system operation the fan switch to AUTO. by jumpering thermostat terminals at the primary control, such as the gas ON AUTO FAN valve, zone valve, oil burner control. This will damage the thermostat. In- stead, you could jumper R and W wires at the thermostat. Press up arrow of key until the setting is Temp about 10°F (6°C) above room tempera- ture. H
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HEAT OFF COOL Move the system switch to OFF and the fan switch to ON. The fan should run continuously. When the fan switch is in the AUTO position, fan cycles with the ON AUTO FAN heating or cooling system. 27 69-0733—3 STEP 11 Set The Fan And System Switches ON AUTO First set the fan switch. FAN ON: The fan runs continuously. Use for FAN improved air circulation during special occa- sions or for more efficient electronic air clean- ing. (In a heat-only system, fan runs continu- ously only if
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HEAT OFF COOL Then set the system switch. HEAT: The thermostat controls your heating system. HEAT OFF COOL OFF: Both the heating and air conditioning systems are off. HEAT OFF COOL COOL: The thermostat controls your air con- ditioning system. 29 69-0733—3 Troubleshooting Guide IF… THEN… Display does not come on. n Set the system switch to OFF. Remove batteries. Insert back- ward for at least five seconds to reset thermostat. Replace batteries correctly. Display should come on. n Make sure batter
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Heating does not come on. n Check that switch on thermostat is set to HEAT. n Check the system fuse or circuit breaker and replace or reset if necessary. If display is blank or displays REPL BAT, install fresh batteries. n Check for correct wiring and good connections. n Jumper wires R and W. If heat does not come on, contact your heating dealer. n If temperature setting is higher than current temperature, and HEAT ON is displayed, contact Honeywell Customer Assis- tance at 1-800-468-1502. Cooli
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HEAT ON is displayed, but n Allow time for the furnace to heat up and the fan to come on no heat is coming from before checking for heat at the register. Note that on most gas the registers. and oil systems, the fan is not controlled by the thermostat, but by another control, which may account for the delay. The system cycle length n Readjust according to instructions on pages 18 and 19. is too short or too long. The thermostat's current n Check that the wiring hole in the wall behind the wallpl
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Toll-free Customer Assistance NOTICE: This equipment is a Class B digital For all questions concerning this thermostat, apparatus, which complies with Canadian please read and follow the instructions. If addi- Radio Interference Regulations, CRC c.1374. tional assistance is needed, call Honeywell Cus- tomer Assistance toll-free at 1-800-468-1502, Monday-Friday, 7:00 a.m. - 5:30 p.m., Central time. Before you call, please have the following in- formation available—thermostat model num- ber and d
