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American Standard ASYSTAT500C manual

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Table of contents for the manual

  • Page 1

    1 Pub. No. 12-5029-01 69-1617 OWNER’S GUIDE ASYSTAT500C Deluxe Programmable Heat Pump Thermostat Pub. No. 12-5029-01 69-1617[...]

  • Page 2

    2 Pub. No. 12-5029-01 69-1617 TABLE OF CONTENTS CUSTOMIZING YOUR THERMOST A T .................................................................................................... ......... 5 Program Options Set-Up by Y our American Standard Dealer ....................................................................... 5 -6 GETTING AROUND THE KEYBOA[...]

  • Page 3

    3 Pub. No. 12-5029-01 69-1617 Displaying Outdoor T emperature ................................................................................................. .................. 24 Displaying Current Settings .................................................................................................... ....................... 25 Filter Indic[...]

  • Page 4

    4 Pub. No. 12-5029-01 69-1617 TROUBLESHOOTING ....................................................................................................................................... 60 DEFINITIONS .................................................................................................................................................... 63 I[...]

  • Page 5

    5 Pub. No. 12-5029-01 69-1617 CUSTOMIZING YOUR THERMOSTAT Program Options Set Up by Your American Standard Dealer Y our American Standard dealer has programmed your thermostat using the options checked below . For example, your thermostat displays temperatures in degrees Fahrenheit if the checkbox next to Fahrenheit ( ° F) is checked. Contact your[...]

  • Page 6

    6 Pub. No. 12-5029-01 69-1617 NOTE: The ASYST A T500C thermostat is manufactured for the American Standard Company by Honeywell Inc. Specific features are unique to American Standard and are only available on American Standard models. Comfort-R™ Control ❑ Off ❑ On Adaptive Intelligent Recovery™ Control ❑ On ❑ Off (Conventional recovery)[...]

  • Page 7

    7 Pub. No. 12-5029-01 69-1617 GETTING AROUND THE KEYBOARD The keyboard is located behind the thermostat cover . Three frequently used keys are located next to the display (Increase temperature setting, Decrease temperature setting, and Information key). The thermostat displays important information such as day , time, schedule period, temperature, [...]

  • Page 8

    8 Pub. No. 12-5029-01 69-1617 M13301 Time Set Program System Filter Fan Run Program Hold Temp Set Current Day/Time Wake Leave Return Sleep Day Heat/Cool Settings Daylight Time Copy NO NEED TO WORRY ABOUT PRESSING THE WRONG KEY! RUN PROGRAM, RETURN TO NORMAL OPERATIONS, OR UNDO LAST ACTION. H OLD MODE: OVERRIDE N ORMAL PROGRAMMING O PERATION, OR GO [...]

  • Page 9

    9 Pub. No. 12-5029-01 69-1617 Emergency Heat The Emergency Heat feature allows you to “turn on” the electric heat section of the system by moving the system switch to the Em. Ht. position. The LED lights and the thermostat displays “Em. Ht.” when the system calls for emergency heating. The thermostat may also display “Aux. Ht.” if the s[...]

  • Page 10

    10 Pub. No. 12-5029-01 69-1617 FEATURES •W orry-free programming. • Comfort-R Comfort Enhancement Process—a unique American Standard feature. • Adaptive Intelligent Recovery Control for comfort and energy savings. •W ake, Leave, Return and Sleep at the comfort level you select. • Customize the program schedule—program your own schedul[...]

  • Page 11

    11 Pub. No. 12-5029-01 69-1617 FEATURES YOU’LL WANT TO KNOW MORE ABOUT Comfort-R Comfort Enhancement System Comfort can best be described as the proper balance of temperature and relative humidity , also known as “your comfort index.” The greatest level of comfort is achieved when the temperature and relative humidity are in balance with your[...]

  • Page 12

    12 Pub. No. 12-5029-01 69-1617 Adaptive Intelligent Recovery Control Your Thermostat Senses Temperature More Like You Do Y our new thermostat is so smart, it’s almost human. Y ou perceive temperature from a variety of sources, not only from the air in the room, but also from your surrounding walls, windows and furnishings. Humans feel differences[...]

  • Page 13

    13 Pub. No. 12-5029-01 69-1617 After installation or new schedule programming, your thermostat learns from experience. How? Each day it checks how closely it hit the recovery target (for example, 70 ° at 6:00 AM) and adjusts the next day’s recovery start time accordingly . After four to eight days, the thermostat has adjusted to local weather , [...]

  • Page 14

    14 Pub. No. 12-5029-01 69-1617 At 4:00 AM Recovery Begins At 5:00 AM Recovery Continues At 6:00 AM Recovery Continues At 7:00 AM System Operating in Comfort Mode ENERGY SAVINGS PERIOD RECOVERY FROM ENERGY SAVINGS COMFORT PERIOD TIME TEMPERATURE THE THERMOSTAT USES THE SAME SCHEME TO RETURN GRADUALLY TO LOWER COMFORT TEMPERATURE DURING THE COOLING S[...]

  • Page 15

    15 Pub. No. 12-5029-01 69-1617 NEAT STUFF YOU’LL BE USING OFTEN Setting Temporary Temperatures If your thermostat is set for 7-Day or 24-Hour Operation, you can override the current schedule period and change the temperature setting until the next schedule period, or change the temperature setting while you are on vacation. Y ou can also change t[...]

  • Page 16

    16 Pub. No. 12-5029-01 69-1617 The temporary temperature setting you select displays for approximately 3 seconds. The display reads T emporary until the next period begins, or you cancel the Hold. IMPORT ANT To cancel the Hold before the designated time, press Run Program . After selecting a temporary setting, display reads T emporary until cancele[...]

  • Page 17

    17 Pub. No. 12-5029-01 69-1617 Changing Temperature Setting Indefinitely NOTE: This feature does not apply to Constant T emperature Setpoint Programming. NOTE: The current time does not display while in this mode. Hold Temp 1. Press Hold T emp once. Pressing Hold T emp once displays the thermostat in Hold mode. Example display shows temporary heat [...]

  • Page 18

    18 Pub. No. 12-5029-01 69-1617 2. Press Increase ▲ or Decrease ▼ to change the temperature setpoint, if desired. By pressing the T emperature keys, you can select a temporary temperature. This temperature setting remains until the hold is canceled. Example displays shows heat set to 61 ° . 3. Press Heat/Cool Settings to change between heat and[...]

  • Page 19

    19 Pub. No. 12-5029-01 69-1617 4. Press Increase ▲ or Decrease ▼ to adjust temperature settings. Pressing the T emperature keys changes the temporary temperature. Example displays shows temporary cooling setting of 80 ° . NOTE: The display changes from the setpoint to the room temperature after approximately 3 seconds. IMPORT ANT To cancel the[...]

  • Page 20

    20 Pub. No. 12-5029-01 69-1617 Vacation Mode NOTE: This feature does not apply to Constant T emperature Setpoint Programming. 1. Press Hold T emp twice. Pressing Hold T emp twice displays the thermostat in V acation mode. Example displays shows temporary heat setting of 60 ° . Hold Temp M14569 Cool Setting[...]

  • Page 21

    21 Pub. No. 12-5029-01 69-1617 Time Leave Wake Return Sleep 2. Press Time ▲ or T ime ▼ until the desired number of days displays (1 to 255 days). By pressing the T ime keys, the number of vacation days is selected. Example displays shows 18 vacation days. 3. Press W ake , Leave , Return or Sleep to select the period the Hold will stop. In this [...]

  • Page 22

    22 Pub. No. 12-5029-01 69-1617 4. Press Increase ▲ or Decrease ▼ to adjust the temperature setting, if desired. By pressing T emperature keys, a new hold temperature is selected. Example display shows temporary heat setting of 55 ° . NOTE: Only the heating temperature is used when the System is set to Heat. Similarly , only the cooling tempera[...]

  • Page 23

    23 Pub. No. 12-5029-01 69-1617 IMPORT ANT To cancel the Hold before the designated time, press Run Program . Run Program Pressed the wrong key? W ant to start over? Don’t worry! Y ou can always press to return display to normal. Run Program[...]

  • Page 24

    24 Pub. No. 12-5029-01 69-1617 Information Key The Information key provides information at your fingertips. The sequence of key presses is as follows: • Outdoor T emperature (if equipped) • Current Setpoint of Mode in Use (Heat or Cool) • Setpoint of Mode Not Currently in Use • Filter Status If the filter status is expired (refer to Filter [...]

  • Page 25

    25 Pub. No. 12-5029-01 69-1617 Displaying Current Settings Press twice to check the current temperature setpoint. Press three times to check the temperature setpoint of the mode not currently in use. NOTE: Without outdoor temp. sensor , press once to display current setpoint; twice for opposite setpoint. NOTE: If the filter status is expired, press[...]

  • Page 26

    26 Pub. No. 12-5029-01 69-1617 Filter Indication Y our thermostat monitors the time the fan is running and lets you know when to replace the filter , based on the number of fan run-time days you select. Upon expiration, the thermostat displays Filter and the backlight flashes during the W ake and Return modes. To temporarily cancel the flashing dis[...]

  • Page 27

    27 Pub. No. 12-5029-01 69-1617 Setting or Resetting Filter Indication Timer Y our thermostat comes preset to the 30-day setting. T o change this setting, or reset after filter expiration, follow these instructions: 1. Press Filter to enter the Filter mode. Filter Pressing the Filter key displays filter information. In this example, current fan run [...]

  • Page 28

    28 Pub. No. 12-5029-01 69-1617 3. Press Time ▲ or T ime ▼ until the desired number of days displays (0, 7, 14, 21, 30, 45, 60, 90, 120, 180, 270, or 360). 4 . Press Run Program to return to normal operation. IMPORT ANT To track the time the fan is running, you must select a setting other than 0. If the setting is 0 days, the display will always[...]

  • Page 29

    29 Pub. No. 12-5029-01 69-1617 PROGRAMMING YOUR THERMOSTAT Clock Setting Current Day and Time IMPORT ANT Always press the keys with your fingertip or similar blunt tool. Sharp instruments like pens and pencil points will damage the keyboard. On initial power up or after an extended power loss, 1:00 PM flashes on the display until a key is pressed. [...]

  • Page 30

    30 Pub. No. 12-5029-01 69-1617 1. Press Set Current Day/Time . Set Current Day/Time Pressing Set Current Day/T ime displays the information shown. 2. Press Day until the current day displays. NOTE: Mon = Monday , T ue = T uesday , W ed = W ednesday , Thu = Thursday , Fri = Friday , Sat = Saturday , Sun = Sunday . Day By Pressing Day , you can set t[...]

  • Page 31

    31 Pub. No. 12-5029-01 69-1617 3. Press Time ▲ or T ime ▼ until the current time displays. NOTE: T apping Set Current Day/ Time advances the time in one-hour increments. By Pressing T ime, you can set the current time. Example display shows 8:15 AM. Time NOTE: If the current time is Daylight Savings T ime, press Daylight Time until DST displays[...]

  • Page 32

    32 Pub. No. 12-5029-01 69-1617 Setting System and Fan The system default setting is Heat and the fan default setting is Auto. Use the System and Fan keys to change the settings. The fan settings can be set for each schedule period individually . The system selection is for all the schedule periods. Set System Press System until the desired system d[...]

  • Page 33

    33 Pub. No. 12-5029-01 69-1617 7-Day Program and Operation Y our thermostat comes preset for 7-Day Operation unless otherwise noted on page 6. After reviewing the options following this section, you may find that 24-Hour Operation or Constant T emperature Setpoint Programming is better for you and your family . If so, please consult your American S[...]

  • Page 34

    34 Pub. No. 12-5029-01 69-1617 T able 1. 7-Day Preprogrammed Schedule. WAKE LEAVE RET URN S LE EP SUNDAY TIME 6:00 AM FAN AU TO H 70 C 78 TIME 8:00 AM FAN AUTO H 62 C 85 TIME 5:00 PM FAN AUTO H 70 C 78 TIME 10:00 PM FAN AU T O H 62 C 82 MONDAY TIME 6:00 AM FAN AUT O H 70 C 78 TIME 8:00 AM FAN AUTO H 62 C 85 TIME 5:00 PM FAN AUTO H 70 C 78 TIME 10:0[...]

  • Page 35

    35 Pub. No. 12-5029-01 69-1617 Customizing Your Own 7-Day Schedule Before starting the programming procedure, use T ables 2 and 3 to organize your schedule. The preprogrammed schedule is shown in T able 1. Four time periods are available for each day of the week – W AKE, LEA VE, RETURN, and SLEEP . A W ord About Power Outages Don’t worry! Y our[...]

  • Page 36

    36 Pub. No. 12-5029-01 69-1617 Instructions 1. W rite in the time you want each schedule period to begin. 2. W rite in the heating temperature (H) and cooling temperature (C) you want for each period. 3. Circle the fan operation you desire for each period. 4. Begin with Programming the First Day! Pressed the wrong key? W ant to start over? Don’t [...]

  • Page 37

    37 Pub. No. 12-5029-01 69-1617 T able 2. Y our 7-Day Schedule. WAKE LEAVE RET URN S LE EP SUNDAY TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C MONDAY TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TUESDAY TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FA[...]

  • Page 38

    38 Pub. No. 12-5029-01 69-1617 T able 3. An Extra 7-Day Schedule. WAKE LEAVE RET URN S LE EP SUNDAY TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C MONDAY TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TUESDAY TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME FAN AUTO ON H C TIME[...]

  • Page 39

    39 Pub. No. 12-5029-01 69-1617 Programming the First Day To modify the preprogrammed schedule, start by programming the Wake time and temperature and fan operation for any one day: NOTE: This schedule follows the current day and time you set in the section Setting Current Day and Time and the Heat or Cool setting and Fan setting you selected in the[...]

  • Page 40

    40 Pub. No. 12-5029-01 69-1617 2. Press Day until the desired day displays. Day By pressing Day , you select the day to program. Example display shows Monday is selected and ready to program. 3. Press Time ▲ or T ime ▼ until the desired W ake time displays. NOTE: The program times are in fifteen-minute intervals. (Example: 8:00, 8:15, 8:30). Ti[...]

  • Page 41

    41 Pub. No. 12-5029-01 69-1617 4. Press Increase ▲ or Decrease ▼ until the desired W ake temperature displays. NOTE: The setpoint temperature range is 55 to 85 ° F (13 to 29 ° C) for heating and 65 to 99 ° F (18 to 37 ° C) for cooling. By pressing Increase L or Decrease M , you select the temperature for the W ake period. Example display sh[...]

  • Page 42

    42 Pub. No. 12-5029-01 69-1617 5. Press Heat/Cool Settings to make selections for the opposite system setting (either Heat or Cool). NOTE: If your system is set for Heat, only the heating temperature will be used. Similarly , if your system is set for Cool, only the cooling temperature will be used. If your system is set for Auto, either the heatin[...]

  • Page 43

    43 Pub. No. 12-5029-01 69-1617 Leave Return Sleep Run Program 7. Press Leave , Return or Sleep and repeat steps 3, 4, 5 and 6 for programming the rest of the day . The day is now programmed (first day of a seven-day schedule). IMPORT ANT Repeat steps 1 through 7 for each day of the week that has a different schedule from the first day . Or , refer [...]

  • Page 44

    44 Pub. No. 12-5029-01 69-1617 Copying a Day NOTE: The copy feature applies only to 7-Day Operation. The thermostat must be in the program mode to use the copy feature. Go to step 2 if the thermostat is already in the program mode (Set Program displays in upper left corner). 1. Press W ake , Leave , Return or Sleep to enter program mode. Leave Retu[...]

  • Page 45

    45 Pub. No. 12-5029-01 69-1617 3. Press Copy . Copy By pressing Copy , you copy a day’s schedule into memory . Example display shows Monday’s schedule has been copied into memory . 4 . Press Day until the day to be copied to is displayed. Day By pressing Day again, you select which day to copy to. Example display shows Monday and Wednesday . Si[...]

  • Page 46

    46 Pub. No. 12-5029-01 69-1617 5 . Press Copy . NOTE: donE displays for two seconds before the normal display returns. Run Program Copy By pressing Copy again, you complete the copy command. Example display shows donE. Monday’s schedule was successfully copied to Wednesday (Monday and W ednesday now have the same schedule). 6. Repeat steps as nec[...]

  • Page 47

    47 Pub. No. 12-5029-01 69-1617 Clearing Schedule Period Suppose you want to skip a schedule period or periods for a particular day because you don’t need them. For example, if Saturday is a day you normally stay at home from school or work, you can clear the Leave and Return periods for this day and keep the W ake and Sleep periods. Y ou can alwa[...]

  • Page 48

    48 Pub. No. 12-5029-01 69-1617 2. For 7-Day Operation, press Day until the desired day displays. For 24-Hour Operation, skip to step 3. Day Press Day to select which day to begin clearing periods. Example display shows Saturday is selected. 3. Press and hold Leave , Return or Sleep until the start time and temperature setting are cleared (approxima[...]

  • Page 49

    49 Pub. No. 12-5029-01 69-1617 Y ou do not have to program a replacement time for the remaining periods, for example Wake and Sleep. If you cleared only the Leave and Return periods for Saturday (or any day), the thermostat remains in the W ake period for all of Saturday until the Sleep period. 4. Repeat steps as necessary for all the periods to be[...]

  • Page 50

    50 Pub. No. 12-5029-01 69-1617 24-Hour Program and Operation 24-Hour Operation is the same as 7-Day Operation except the same program repeats itself each day . Monday through Sunday follows the same exact schedule (four periods and up to eight temperatures). During 24-Hour Operation, all days of the week display in program mode. 24-Hour Preprogramm[...]

  • Page 51

    51 Pub. No. 12-5029-01 69-1617 The preprogrammed schedule is as follows (same schedule for all days of the week): Y ou may keep this schedule or organize your own. T able 4. 24-Hour Preprogrammed Schedule. Customizing Your Own 24-Hour Schedule Before starting the programming procedure, use T ables 5 and 6 to organize your schedule. The preprogramme[...]

  • Page 52

    52 Pub. No. 12-5029-01 69-1617 Instructions 1. W rite in the time you want each schedule period to begin. 2. W rite in the heating temperature (H) and cooling temperature (C) you want for each period. 3. Circle the fan operation you desire for each period. 4. Begin programming. T able 6. An Extra 24-Hour Schedule. WAKE LEAVE RE TU RN SLEEP Program [...]

  • Page 53

    53 Pub. No. 12-5029-01 69-1617 1 . Press W ake . Time Wake By pressing W ake, you enter the program mode. Example display shows 6:00 AM with Heat set to 70 ° F. 2. Press T ime ▲ or T ime ▼ until the desired W ake time displays. NOTE: The program times are in fifteen minute intervals. (Example: 8:00, 8:15, 8:30). By pressing T ime, you select t[...]

  • Page 54

    54 Pub. No. 12-5029-01 69-1617 3. Press Increase ▲ or Decrease ▼ until the desired W ake temperature displays. NOTE: The setpoint temperature range is 55 to 85 ° F (13 to 29 ° C) for heating and 65 to 99 ° F (18 to 37 ° C) for cooling. By pressing Increase ▲ or Decrease ▼ , you select the temperature for the W ake period. Example displa[...]

  • Page 55

    55 Pub. No. 12-5029-01 69-1617 Heat/Cool Settings 4. Press Heat/Cool Settings to make selections for the opposite system setting (either Heat or Cool). NOTE: If your system is set for Heat, only the heating temperature will be used. Similarly , if your system is set for Cool, only the cooling temperature will be used. If your system is set for Auto[...]

  • Page 56

    56 Pub. No. 12-5029-01 69-1617 5. Press Increase ▲ or Decrease ▼ until the desired temperature setpoint displays. By pressing Increase ▲ or Decrease ▼ , you select the cooling W ake temperature. Example display shows the cooling W ake period set for 76 ° . 6 . Press Leave , Return or Sleep and repeat steps 2, 3, 4, and 5 for programming th[...]

  • Page 57

    57 Pub. No. 12-5029-01 69-1617 Constant Temperature Setpoint Programming Unlike the first two options, Constant T emperature Setpoint Programming does not have the W ake, Leave, Return and Sleep periods. The temperature is set by pressing the ▲ and ▼ keys. The four periods (for example, W ake) are absent from the display in this mode. Setting T[...]

  • Page 58

    58 Pub. No. 12-5029-01 69-1617 1. Press Increase ▲ or Decrease ▼ until the desired temperature displays. NOTE: The setpoint temperature range is 55 to 85 ° F (13 to 29 ° C) for heating and 65 to 99 ° F (18 to 37 ° C) for cooling. Fan By pressing Increase ▲ or Decrease ▼ , you select the heating temperature. Example display shows Heat is[...]

  • Page 59

    59 Pub. No. 12-5029-01 69-1617 3. Press Increase ▲ or Decrease ▼ until the desired temperature setpoint displays. By pressing Increase ▲ or Decrease ▼ after pressing , you select the cooling temperature. Example display shows Cool is set for 75 ° . NOTICE: This equipment is a Class B digital apparatus, which complies with Canadian Radio In[...]

  • Page 60

    60 Pub. No. 12-5029-01 69-1617 TROUBLESHOOTING GUIDE (continued) Symptom Possible Cause Action Display does not come on. Thermostat is not being powered. Check if the thermostat is mounted and latched on the wallplate—mount and latch the thermostat on the wallplate. Check if the circuit breaker is tripped—reset the circuit breaker. Check if the[...]

  • Page 61

    61 Pub. No. 12-5029-01 69-1617 T roubleshooting Guide (continued). (continued) Symptom Possible Cause Action Heating does not come on. No power to the thermostat. System selection is not set to Heat. Heating setpoint is below room temperature. Check that setpoint is above room temperature. Check if the circuit breaker is tripped—reset the circuit[...]

  • Page 62

    62 Pub. No. 12-5029-01 69-1617 T roubleshooting Guide (continued). Symptom Possible Cause Action System on indicator (flame=heat, snowflake= cool) is lit, but no warm or cool air is coming from the registers. Heating/cooling equipment turns on the fan when the equipment has reached the setpoint. Wait a minute after seeing the flame or snowflake and[...]

  • Page 63

    63 Pub. No. 12-5029-01 69-1617 DEFINITIONS Adaptive Intelligent Recovery™ Control Adaptive Intelligent Recovery™ Control is the factory default setting that allows you to choose the exact time the room reaches your comfort temperature, as opposed to conventional recovery . Adaptive Intelligent Recovery™ Modes W AKE Y ou choose the exact time [...]

  • Page 64

    64 Pub. No. 12-5029-01 69-1617 If your thermostat is set to conventional recovery , a ❑ indication displays continuously , as shown on the example display . Conventional Recovery Modes W AKE Y ou choose the time you want your heating or cooling system to start to reach your comfort tempera- ture after the SLEEP period. Adjust this time to earlier[...]

  • Page 65

    65 Pub. No. 12-5029-01 69-1617 Preprogrammed Schedule The preprogrammed schedule consists of the four periods (W ake, Leave, Return and Sleep) and accompanying temperatures programmed into your thermostat at the factory . See T ables 1 and 4. Period One of the four times of the day (W ake, Leave, Return or Sleep) that you can program a setpoint or [...]

  • Page 66

    66 Pub. No. 12-5029-01 69-1617 INDEX 24-Hour Operation, 50 24-Hour Preprogrammed Schedule, 50 7-Day Operation, 33 7-Day Preprogrammed Schedule, 33 Adaptive Intelligent Recovery Control, 12 Auxiliary Heat, 9 Changing T emperature Setting Indefinitely , 17 Changing T emperature Setting Until the Next Schedule Period, 15 Clearing Schedule Period, 47 C[...]

  • Page 67

    67 Pub. No. 12-5029-01 69-1617 LIMITED WARRANTY Low Voltage Room Thermostats This warranty is extended by American Standard Inc., to the original purchaser and to any succeeding owner of the real property to which the Thermostat is originally affixed, and applies to products purchased and retained for use within the U.S.A. and Canada. If any part o[...]

  • Page 68

    68 Pub. No. 12-5029-01 69-1617 Pub. No. 12-5029-01 69-1617 4-02 G.H. American Standard Inc. T roup Highway T yler , TX 7571 1-9010 CUSTOMER ASSISTANCE If, after reading this guide, you have any questions concerning the operation of your thermostat, please call the Thermostat Customer Assistance Helpline at 1-800-500-2041. For service, contact your [...]