About Your New Thermostat . . . Your new Digital COMFORT SET II Multi-stage/Heat Pump Thermostat uses the technology of a solid-state microcomputer to provide precise time/temperature control. The COMFORT SET II Thermostat offers you the flexibility to design heating and cooling programs that fit your needs. Please read this manual thoroughly before operating or programming your thermostat.
YOUR NEW THERMOSTAT'S FEATURES ... 4 OPERATING YOUR THERMOSTAT ... 5 PARTS OF THE THERMOSTAT The Back Of the Thermostat Body The Display The Thermostat Buttons OPERATING FEATURES PROGRAMMING YOUR THERMOSTAT ... 18 PLANNING FOR YOUR NEEDS ENTERING YOUR PROGRAM Set Current Time and Day Program Heating and Cooling Temperatures...
YOUR NEW THERMOSTAT’S FEATURES • Computed Energy Management Recovery (EMR) • Automatic changeover (operator-selectable) • Separate setback programming for 7 inde- pendent days • Simultaneous heat and cool program stor- • Four separate time/temperature settings per 24-hour period • Armchair programming capability •...
OPERATING YOUR THERMOSTAT Before you begin programming your thermo- stat, you should be familiar with its features and with the display and the location and operation of the thermostat buttons. The information in this section will help you become familiar with your new thermostat so that you can easily program it.
PARTS OF THE THERMOSTAT The Back of The Thermostat Body Turn the thermostat body over. On the back are ® the 9 volt Energizer alkaline battery and the option switches. 1. The 9 volt Energizer ® alkaline battery pro- vides power to the thermostat when the 24vAC power is interrupted (for example, when you remove the thermostat from the wall for programming).
alkaline battery. The battery will provide power for all functions except the display light, which works only on 24vAC power. CAUTION Before removing thermostat from the wall to replace the battery, remove 24vAC power form the thermostat at the breaker/ fuse box.
The Display Continuously displays system mode (HEAT, EMER, OFF, COOL, AUTO, HOLD). Dur- ing programming, the day of the week is displayed (MO, TU, WE, etc.). Alternately displays room temperature (F denotes degrees Fahrenheit and C denotes degrees Celsius) and time of day (A de- notes AM time and P denotes PM time).
FAN AUTO W H I T E - R O D G E R S SEVEN DAY DIGITAL COMFORT-SET SYSTEM TIME SWITCH HEAT-EMER-OFF-COOL-AUTO TIME BACK SWITCH ON-AUTO FAN AUTO EMER. PUMP MALF. AUX. VIEW HOLD CLOCK PRGM COPY VIEW TEMP PRGM FAN ON BATTERY...
The Thermostat Buttons Sets the system mode (HEATing, OFF, COOLing, or AUTOmatic changeover). Selects fan operation (see #5, above). Runs display forward or backward through time, day, or anticipation settings during programming. Used with TIME TIME BACK and day of the week. Used during programming to set the day of the week to be programmed.
is maintaining the setpoint temperature — there is a 5- to 10-minute startup delay on the first emergency cycle). MALF light indi- cates a heat pump system malfunction (re- fer to heat pump manufacturer's operating manual). A continuous (non-flashing) PUMP W H I T E - R O D G E R S HEAT-EMER-OFF-COOL-AUTO light indicates that the heat pump compres-...
OPERATING FEATURES Now that you are familiar with the thermostat display and buttons, read the following informa- tion to learn about the many features of the thermostat. • COMPUTED ENERGY MANAGEMENT RECOVERY (EMR) — The thermostat’s microcomputer automatically calculates the time it will take to change the temperature to the next program setting.
the battery, then use a pencil or small screw- driver to move the switch to the ON position (see figure at right). Leave the battery out of the thermostat for at least two minutes, to allow the thermostat to reset itself. DO NOT MOVE OPTION SWITCHES #1 OR #2, as this may affect thermostat operation.
• TWO HOUR TEMPERATURE OVER- RIDE — Press display shows the temperature you want. The thermostat will override current pro- gramming and keep the room temperature at the selected temperature for two hours. After two hours, the thermostat will auto- matically revert to the program.
To adjust heat anticipation, press at the same time. The display will show HEAT 18 (this is the factory preprogrammed heating anticipation setting). You may se- lect any anticipation setting from 4 to 40 (note that for add-on heat pump sys- tems, a minimum anticipation setting of 10 is recommended).
• AUDIO PROMPTING — Each time you press a button, the thermostat will beep (this feature works only when the thermostat is attached to the wall and 24vAC power is present to the thermostat). • BACKLIT DISPLAY — When you press any button on the thermostat, the display is lit for approximately eight seconds (this fea- ture works only when the thermostat is...
stored to the system, heaters in the system will begin to heat the crankcase oils. The thermostat's time delay will lock out the compressor to prevent its operation until the compressor oil is sufficiently warmed. Dur- ing the lockout time period, the auxiliary heating system will operate to maintain a setpoint temperature.
#4 enables/disables automatic changeover (see AUTOMATIC CHANGEOVER)]. To PROGRAMMING YOUR THERMOSTAT Now you are ready to program your thermostat. This section will help you plan your thermostat's program to meet your needs. For maximum comfort and efficiency, keep the following guidelines in mind when planning your program.
2a. What time do the building occupants reach a maximum activity level (using lights, equip- ment, meeting rooms, etc.)? b. What temperature should the building be at this time? 3a. What time do the building occupants reach a minimum activity level (limited personnel in building)? b.
Heating Program for ALL days of the Week: PERIOD If you want to change the preprogrammed times and temperatures, follow these steps. 1. Determine the heating and cooling tem- peratures you want to use. You may select up to four heating temperatures (HEAT A, HEAT B, HEAT C, and HEAT D), and up to four cooling temperatures (COOL A, COOL B, COOL C, COOL D).
NOTE To operate properly in the AUTO mode, there must be a minimum 1 F separation between the highest heat temperature and the lowest cool temperature (see diagram below). COOLING TEMPERATURES DEAD BAND 1°F HEATING TEMPERATURES 2. Determine the time periods during which you will program the temperatures you have just selected.
Heating/Cooling Schedule Plan THIS THERMOSTAT ALLOWS ONE SET OF TIMES FOR BOTH HEATING AND COOLING Period 1 Period 2 Period 3 Period 4 Heat Cool Heat Cool Heat Cool Heat Cool Time Temp. Temp. Time Temp. Temp. Time Temp. Temp. Time Temp.
Joe's Restaurant Closed Mon. Open Tues.-Sat. 10:30 AM–10:00 PM Heating/Cooling Schedule Plan Open Sun. 6:30 AM–2:00 PM THIS THERMOSTAT ALLOWS ONE SET OF TIMES FOR BOTH HEATING AND COOLING Period 1 Heat Time Temp. Temp. Time Monday 5:00 AM 65° (A) Tuesday 5:00 AM 65°...
ENTERING YOUR PROGRAM Follow these steps to enter the heating/cooling program you have selected. NOTE We recommend that you remove the thermostat from the wall for programming (especially for entering cooling programming). A fresh 9 volt ® Energizer alkaline battery must be installed to perform off-wall programming.
5. Press once. The display will show the CLOCK day of the week as an abbreviation (MO for Monday, TU for Tuesday, etc.). 6. Press and hold either TIME reach the current day of the week. 7. Press once. The display will show the PRGM correct time and room temperature alter- nately.
4. Press VIEW once. The letter A will change TEMP to the letter B, representing HEAT B. 5. Press either temperature to your selected HEAT B set- ting. 6. Repeat steps 4 and 5 to select HEAT C and HEAT D temperature settings. 7.
grammed HEAT A, B, C, or D temperature for heating/cooling period 1. EXAMPLE: This display window shows that for Monday’s heating/cooling period 1, the start time is 5:00 AM, and 70 is the programmed tem- perature (this example reflects factory pre- programming, where 70 is the HEAT A temperature).
NOTE The thermostat has a built-in COPY feature. This feature automatically copies the heating and cooling programs you se- lect for Monday into Tuesday through Sunday’s programs. If you want to have the same programming every day, after you program Monday’s schedule, you simply press to start the thermostat’s pro- PRGM...
Program Cooling Temperatures CAUTION If outside temperature is below 50 F, we recommend that you remove the thermo- stat from the wall before proceeding with the following steps to program cooling temperatures. Personal injury or prop- erty damage may occur due to air condi- tioner compressor slugging.
6. Use the HOLD button, or press COPY other days to program. Remember, once you enter Monday’s program, Monday’s program is automatically copied into Tuesday’s through Sunday’s programs. 7. After you enter or copy heating and cooling programs for all 7 days, press program operation.
3. Press HOLD once. COPY will appear on the COPY display. A number from 1 to 7 will also appear, representing the day you have se- lected to copy (Monday is 1, Tuesday is 2, Wednesday is 3, etc.). For example, if in step 2 you selected to copy Wednesday’s program, when you press will appear in the display (as shown below).
VIEW 4. Press and hold to view heating/cooling PRGM periods and heating temperatures for Tues- day. 5. Repeat steps 3 and 4 to review all remain- ing days’ programming. If you find an error in any day’s programming, go back to the programming instructions to correct the error.
QUESTIONS AND ANSWERS 1. How can I permanently change a part of my program? VIEW Press until you reach the time/tem- PRGM perature schedule you want. Then press TIME the program (remember, when you change the time, you are changing it for both the heating and cooling programs).
programming at this point, press start the normal program function. See PRO- GRAMMING YOUR THERMOSTAT. 4. What happens if the electricity goes off or is manually shut off? If you have not installed a 9 volt alkaline battery, the display will go blank and the program will be lost in five seconds.
the wall and remove the battery for at least two minutes. After reinstalling the battery, the thermostat will revert to the factory pre- set program until you reprogram the ther- mostat. If you don’t want to reprogram the thermostat immediately, press til OFF is displayed and replace the thermo- stat on the wall.
9. The display is flashing BATTERY. What does this mean? The 9 volt battery installed in the thermostat is low and should be replaced with a fresh 9 ® volt Energizer alkaline battery. See OPER- ATING YOUR THERMOSTAT. 10. Why won’t the system turn on, even though the thermostat display is func- tioning normally? Either the compressor lockout feature is in...
• You have programmed the incorrect day or time. Check your programming (be sure that the times you programmed are correct AM or PM times). See PRO- GRAMMING YOUR THERMOSTAT. • The thermostat is in the HOLD mode. Press to start program operation. See PRGM OPERATING YOUR THERMOSTAT.
mostat is in the HOLD mode. See OPER- ATING YOUR THERMOSTAT. 15. I live in an area where daylight savings time is observed. How do I change the thermostat clock twice a year without affecting thermostat programming? To change your clock, follow the instruc- tions for setting current time and day.
THIS WARRANTY STATEMENT SUPERSEDES ALL WARRANTY STATEMENTS DATED PRIOR TO OCTOBER 1, 1991. White-Rodgers Division of Emerson Electric Co. (“Seller”) warrants that its products purchased for resale (the “Products”) will be free from defects in material and workmanship under normal use and service for a period of twelve (12) months from date of installation.
If you need further information on programming or operation, you may write to our Technical Service Department at the address shown below. WHITE-RODGERS DIVISION EMERSON ELECTRIC CO. 9797 REAVIS ROAD ST. LOUIS, MISSOURI 63123-5398 Part No. 37-4743B Replaces 37-4743A 9310...