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Summary of Contents for American Standard ASYSTAT656
- Page 1 ASYSTAT656 OPERATION GUIDE Programmable Electronic Set-Back Thermostat for Single and Multistage Heatpumps Homeowner: Save this booklet for future use! 12-5014-02...
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Page 2: About Your New Thermostat
About Your New Thermostat . . . Your new American-Standard Digital Multi-stage/Heat Pump Thermostat uses the technology of a solid-state microcomputer to provide precise comfort. This 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. -
Page 3: Table Of Contents
In This Guide . . . YOUR NEW THERMOSTAT'S PROGRAMMING YOUR FEATURES ..........4 THERMOSTAT ........18 OPERATING YOUR THERMOSTAT ..5 PLANNING FOR YOUR NEEDS PARTS OF THE THERMOSTAT ENTERING YOUR PROGRAM The Back Of the Thermostat Body Set Current Time and Day The Display Enter Heating Program The Thermostat Buttons... -
Page 4: Your New Thermostat'sfeatures
YOUR NEW THERMOSTAT’S FEATURES • Separate 5-day (weekday) and 2-day (week- • Compressor short cycle protection end) setback programming • Programmable blower control • Simultaneous heat and cool program stor- • Blower delay OFF in the cooling cycle • Audio and visual prompting during operation •... -
Page 5: Operating Your Thermostat
OPERATING YOUR THERMOSTAT Before you begin programming your thermostat, The subbase is attached to the wall, but you can you should be familiar with its features and with remove the thermostat body for easy program- the display and the location and operation of the ming. -
Page 6: Parts Of The Thermostat
connectors on the upper portion of the thermo- If power loss is long enough for the program to stat back. Gently push until the snap connec- be lost, the thermostat will automatically re- tors engage. DO NOT FORCE OR PRY THE turn to the factory programmed temperatures THERMOSTAT, as this may damage the unit. - Page 7 2. You may adjust the option switch #4 for auto- matic changeover from heat to cool (see OPER- ATING FEATURES). Other than , the buttons are located behind the thermostat door. To open the door, put your fingernail in the indentation at the top of the door, then pull the door out from the top and swing it down on its hinges.
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Page 8: The Display
The Display The word BAT flashes on the display when Continuously displays system mode (HEAT, the 9V alkaline battery is weak and should OFF, EMER, COOL, AUTO, HOLD). Dur- be replaced. ing programming, the program period is displayed (MOR, DAY, EVE, or NHT). is displayed when the blower is operating continuously, REGARDLESS OF Alternately displays room temperature (F... -
Page 10: The Thermostat Buttons
The Thermostat Buttons Used to start program operation after pro- gramming. Also used to return thermostat Sets the system mode (HEATing, to program operation after being in HOLD EMERgency backup, OFF, COOLing, or mode. AUTOmatic changeover). Used to manually override programming to Selects fan operation (see #6, above). - Page 11 is maintaining setpoint temperature - there is a 5 to that the compressor is locked out. An AMBER STG 10 minute startup delay on the first emergency 2 light indicates that the second stage is operating. cycle). A continuous (non-flashing) GREEN STG 1 A flashing AMBER STG 2 light indicates that the light indicates that the heat pump compressor is third stage heat is operating.
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Page 12: Operating Features
OPERATING FEATURES Now that you are familiar with the thermostat next program period, beginning at 6:00 AM, display and buttons, read the following informa- you have programmed a temperature of tion to learn about the many features of the 70°F. The thermostat will automatically ac- thermostat. - Page 13 is OFF (down) remove the battery, then use a pencil or small screwdriver to move the switch set at installation (DO NOT CHANGE) set at installation (DO NOT CHANGE) to the ON position (see figure at right). Leave set at installation (DO NOT CHANGE) the battery out of the thermostat for at least two minutes, to allow the thermostat to reset itself.
- Page 14 is ideal for energy conservation when the • TWO HOUR TEMPERATURE OVERRIDE building is unoccupied for an extended pe- Press until the display shows riod of time. the temperature you want. The thermostat will override current programming and keep TIME •...
- Page 15 • COMPRESSOR SHORT CYCLE PROTECTION During lockout in the HEAT or COOL mode, the To protect your compressor from potential dam- green compressor (PUMP) STG 1 LED will flash. age due to rapid cycling, this thermostat has a During lockout in the COOL mode, the blower will built-in minimum delay of 5 minutes between operate, but compressor operation will be delayed.
- Page 16 NOTE • SYSTEM INDICATOR LIGHTS - The three during any given program period, regardless of lights on the upper right part of the thermostat the cycling of the heating or cooling system. indicate system operation (please refer to During programming, after entering the time and PARTS OF THE THERMOSTAT) for specific temperature for the time period, press FAN until descriptions of what each light indicates.
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Page 18: Programming Your Thermostat
PROGRAMMING YOUR THERMOSTAT PLANNING FOR YOUR NEEDS Now you are ready to program your thermostat. First, answer the following questions to help you This section will help you plan your thermostat's decide what your needs are. If you are using the program to meet your needs. - Page 19 FOR COMMERCIAL APPLICATIONS 2a. What time does the last person leave the 5a. What time does the first person arrive at the house in the morning? building in the morning? b. What temperature should the house be at b. What temperature should the building be at this time? These will be your DAY tempera- this time (heating/cooling)? These will be ture settings.
- Page 20 b. What temperature should the building be at NOTE this time? These will be your EVE (evening) To operate properly in the AUTO mode, there temperature settings. must be a minimum 1°F separation between 8a. What time does the building become va- the highest heat temperature and the lowest cant? cool temperature (see diagram below).
- Page 21 If you want to change the preprogrammed times dently for both weekday and weekend programs (for and temperatures, do the following: example, you may select 5:00 AM and 70° as the weekday MOR heating start time and temperature, Determine the time periods and heating and cool- and choose 7:00 AM and 76°...
- Page 22 WEEKDAY (5 DAY) WEEKEND (2 DAY) Start Time Temperature Start Time Temperature MOR HEAT DAY HEAT EVE HEAT NHT HEAT MOR COOL DAY COOL EVE COOL NHT COOL...
- Page 23 WEEKDAY (5 DAY) WEEKEND (2 DAY) Start Time Temperature Start Time Temperature 5:00 AM 70°F 7:00 AM 68°F MOR HEAT 8:00 AM 65°F 11:00 AM 70°F DAY HEAT EVE HEAT 5:00 PM 70°F 6:00 PM 70°F NHT HEAT 10:30 PM 65°F 11:30 PM 65°F...
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Page 24: Entering Your Program
ENTERING YOUR PROGRAM Set Current Time and Day Follow these steps to enter the heating and 1. Press once. The display will show cooling programs you have selected. CLOCK minutes only. EXAMPLE: NOTE We recommend that you remove the thermostat TIME TIME 2. -
Page 25: Enter Heating Program
VIEW 5. Press once. The display will show the programming after this happens, press PRGM day of the week as an abbreviation (MO for until you are at the point where you stopped Monday, TU for Tuesday, etc.). programming. Then you may continue to enter your programs normally. - Page 26 VIEW 6. Press . The currently programmed This display window shows that for the PRGM weekday MOR period, the start time is start time and heating temperature for week- 5:00 AM, and 70° is the programmed tem- day DAY will be displayed. perature (this example reflects factory pre- 7.
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Page 27: Enter Cooling Program
SYSTEM 1. Press until COOL is displayed. Enter Cooling Program SWITCH 2. Enter your cooling program by following the same procedure you followed for entering your heating program. CAUTION CHECK YOUR PROGRAMMING If outside temperature is below 50°F, we recommend that you remove the thermo- Follow these steps to check your thermostat stat from the wall before proceeding with programming one final time before beginning... - Page 28 SYSTEM 4. Press until COOL is displayed. SYSTEM Press until OFF is displayed. Reattach SWITCH SWITCH thermostat to subbase. Turn on power to the system. 5. Repeat step 2 to check cooling temperatures. SYSTEM Then press to select the operation mode 6.
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Page 29: Questions And Answers
QUESTIONS AND ANSWERS 3. How can I finish my programming if the 1. How can I permanently change a part of my display has already changed to time/tem- program? perature? Press VIEW until you reach the time/temperature PRGM TIME TIME schedule you want. - Page 30 4. What happens if the electricity goes off or is tion PROGRAMMING YOUR THERMOSTAT. manually shut off? 6. What can cause the thermostat display to If you have not installed a 9V alkaline battery, freeze or go blank? the display will go blank and the program will be A completely blank display may indicate that lost in approximately one minute.
- Page 31 until OFF is displayed. Replace the thermostat the heating temperature higher. To set a lower cooling temperature, you must select on the wall. Then press to begin the factory PRGM a lower heating temperature. Please refer to preset program. Or you may reprogram the PROGRAMMING YOUR THERMOSTAT.
- Page 32 use the buttons to move the cally bring the temperature to the selected temperature above or below the setpoint tem- level by the beginning of the next program perature. Please refer to OPERATING YOUR period. Please refer to OPERATING YOUR THERMOSTAT.
- Page 33 11. Why does the blower fan keep running after The system will automatically begin operating the system has turned off? according to the current thermostat program, unless the thermostat is in the HOLD mode. • You have programmed the fan to run con- See OPERATING YOUR THERMOSTAT.
- Page 34 minute if there are no batteries installed or if the 15. The Red Em.Ht. lamp is dimly lit and the installed battery is dead. If you are changing the thermostat is not calling for HEAT, is this batteries after seeing a flashing BAT on the normal? display, the installed batteries may be dead.
- Page 35 LIMITED WARRANTY LOW VOLTAGE ROOM THERMOSTATS This warranty is extended by American Standard Inc., Some states do not allow limitations on how long an to the original purchaser and to any succeeding owner implied warranty lasts or do not allow the exclusion or...
- Page 36 2 A Defrost fault can be cleared by changing to the Emergency Heat Mode. The fault is cleared when the Red LED stops flashing, about 5 seconds. If fault reoccurs, call for service. American Standard Inc. 6200 Troup Highway Pub. No. 12-5014-02...
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