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STS32/STS32H Touchscreen

Programmable Thermostat

950-0120revC August 28, 2009

Room

Running As SCHED

SYSTEM

MORE

SCHED

HOLD

CLOCK SCREEN

AUTO

FAN

WED

AUTO

HEAT

STS32/STS32H Touchscreen Programmable Thermostat

Contents

Application/Features...............................................................................................................2

Specifications.......................................................................................................................... 4

Installation..............................................................................................................................14

Wiring.....................................................................................................................................18

Power the Thermostat............................................................................................................35

Installer Setup.........................................................................................................................48

Installer System Test...............................................................................................................59

User Manual...........................................................................................................................62

Programming ..........................................................................................................................68

Troubleshooting .…..................................................................................................................98

Summary of Contents for STS32

Page 1: ...TEM MORE SCHED HOLD CLOCK SCREEN AUTO FAN WED PM AUTO HEAT STS32 STS32H Touchscreen Programmable Thermostat Contents Application Features 2 Specifications 4 Installation 14 Wiring 18 Power the Thermos...

Page 2: ...stat FEATURES Large clear display with backlight shows the current and set temperature and thermostat in the dark Menu driven programming make setup effortless Beautiful ergonomic design is smart and...

Page 3: ...ool only 750 mV heating systems Changeover Manual or Auto changeover selectable System setting HEAT OFF COOL AUTO EMER for heat pumps Fan setting AUTO ON CIRC 4 STS32 STS32H Touchscreen Programmable T...

Page 4: ...thium battery will maintain the calendar and time settings The Alkaline batteries maintain the calendar and time after lithium battery is no longer functional STS32 STS32H Touchscreen Programmable The...

Page 5: ...on STS32 STS32H 3H 2C STS32 Standard STS32H Humidity Indication Control Mounting Means STS32 STS32H Touchscreen Thermostat Mounts directly on the wall in the living space using mounting screws and anc...

Page 6: ...chscreen Thermostat dimensions in inches mm 5 98 in 152mm 4 48in 114mm 1 235 in 30 60mm STS32 STS32H Touchscreen Programmable Thermostat 11 Fig 2 Touchscreen Thermostat Back Case dimensions in inches...

Page 7: ...R 0 0 4 i n 1 m m R 0 0 9 8 in 2 5 m m 1 10 in 28 1mm 0 62 in 16mm 1 56 in 39 7mm 0 24 in 6 2mm 0 44 in 11 2mm R0 098 in 2 5m m 0 08 in 2mm 1 49 in 38mm 0 1 7 in 4 2 m m STS32 STS32H Touchscreen Prog...

Page 8: ...ing installation use these instructions to check out the product operation Selecting Location Install the thermostat about 5 ft 1 5m above the floor in an area with good air circulation at average tem...

Page 9: ...Remove the wallplate from the wall and if drywall drill two holes in the wall as marked For firmer material such as plaster drill two holes Gently tap anchors provided into the drilled holes until fl...

Page 10: ...ammable insulation to prevent drafts from affecting the thermostat 6 See Fig 9 through 21 for typical wiring hookups CONVENTIONAL HEAT PUMP SCREW TERMINALS S1 S2 C R RC E L Y2 Y G S1 S2 C R RC W W2 Y2...

Page 11: ...eat pump systems AUX Auxiliary heat relay for heat pump systems E Emergency heat relay for heat pump systems L see note 4 Equipment monitor for heat pump systems S1 S2 Optional outdoor or indoor remot...

Page 12: ...E SENSOR 3 COMPRESSOR CONTACTOR OPTIONAL 24VAC COMMON CONNECTION R C 1 2 FAN RELAY HEAT RELAY STS32 STS32H Touchscreen Programmable Thermostat 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROT...

Page 13: ...G OUTDOOR INDOOR TEMPERATURE SENSOR 3 HEAT RELAY OPTIONAL 24VAC COMMON CONNECTION C R 1 2 STS32 STS32H Touchscreen Programmable Thermostat 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECT...

Page 14: ...PERATURE SENSOR 3 R C 1 2 W B R TR TR MOTOR OR VALVE CONVENTIONAL S1 S2 C R RC W W2 Y2 Y G STS32 STS32H Touchscreen Programmable Thermostat 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECT...

Page 15: ...R OPTIONAL 24VAC COMMON CONNECTION R C 1 2 FAN RELAY STS32 STS32H Touchscreen Programmable Thermostat 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 2 FACTORY INSTALLED JU...

Page 16: ...R C 1 FAN RELAY HEAT RELAY 1 HEAT RELAY 2 COOL RELAY 2 COOL RELAY 1 R C 1 3 STS32 STS32H Touchscreen Programmable Thermostat 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRE...

Page 17: ...R2 COMPRESSOR1 4 3 STS32 STS32H Touchscreen Programmable Thermostat 1 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 2 FACTORY INSTALLED JUMPER 3 OUTDOOR SENSOR REQUIRED IN...

Page 18: ...RC E L Y2 Y G O BAUX OUTDOOR INDOOR TEMPERATURE SENSOR 2 R C 1 CHANGEOVER VALVE FAN RELAY OPTIONAL 24VAC COMMON CONNECTION 6 5 COMPRESSOR 2 EMERGENCY HEAT RELAY HEAT 2 RELAY AUXILIARY HEAT EQUIPMENT...

Page 19: ...nd remove the tab See Fig 23 Fig 23 Remove tab 36 BATTERIES 2 REMOVE TAB STS32 STS32H Touchscreen Programmable Thermostat Mount Thermostat to Wallplate 1 Align the terminal screw blocks with the pins...

Page 20: ...65 ft 20m See fig 25 Do not mount the sensor in direct sunlight where hot or cold air blows on the sensor Discharge line from an outdoor compressor unit vent or fan causes inaccurate temperature read...

Page 21: ...ck Hazard Can cause electrical shock or equipment damage Disconnect power supply before connecting wiring Wiring must comply with local and national codes ordinances and regulations 1 Wire Outdoor Sen...

Page 22: ...rculation at average temperature at the chosen location Avoid the following locations because they can introduce errors in sensor measurements See Fig 27 Hot areas caused by a Concealed pipes or ducts...

Page 23: ...ne starters lighting ballasts and large power distribution panels IMPORTANT Erratic temperature readings from a sensor can occur as a result of any of the wiring practices described below Avoid these...

Page 24: ...he wall or junction box using the screws and anchors provided 5 Level 435 0013 for appearance only Device functions correctly even when not level 6 Install 435 0013 cover 46 STS32 STS32H Touchscreen P...

Page 25: ...CHED Set To SYSTEM MORE SCHED HOLD CLOCK SCREEN AUTO FAN TUE AM AUTO STS32 STS32H Touchscreen Programmable Thermostat 3 Release the two blank keys when the screen on the thermostat matches the screen...

Page 26: ...write the selected options in the INITIAL SETTING RECORD column STS32 STS32H Touchscreen Programmable Thermostat Installer Setup Number Installer Setup Name Settings Notes Initial Setting Record 0180...

Page 27: ...90 or better furnaces 5 5 cph for standard fossil fuel forced air less than 90 efficient systems factory setting 9 9 cph used for electric furnaces or electric auxiliary heat for heat pump systems 2...

Page 28: ...1 5 C 40 F 4 5 C 45 F 7 C Default depends on other selections Shown if control is selected See section for more information 54 STS32 STS32H Touchscreen Programmable Thermostat Table 3 Installer Setup...

Page 29: ...page 87 0600 Heat Temperature Range Stop 40 90 temperature range 1 F increments of heating set point Shown in 1 2 C 0610 Cool Temperature Range Stop 50 99 temperature range 1 F increments of cooling s...

Page 30: ...et to have thermostat temperature match independent reading 0710 Reset Thermostat 0 no thermostat reset 1 resets all Installer Setup Options to default values and resets schedule to default setting On...

Page 31: ...t Installer System Tests Table 4 Installer System Test System Test Number Test Type System Status Number and Description Test 1 Cooling System Test 1 Cool stage 1 and stage 2 turn on 0 Cool is off Tes...

Page 32: ...OFF COOL AUTO EMER SCREEN LOCKS OUT THE SCREEN TO ALLOW FOR CLEANING CLOCK SETS THE TIME FORWARD OR BACK SCHED ENTERS SCHEDULING MODE STS32 STS32H Touchscreen Programmable Thermostat System and Fan Se...

Page 33: ...oom Set To SYSTEM COOL TUE AM HEAT OFF CANCEL DONE STS32 STS32H Touchscreen Programmable Thermostat 3 Release the center blank key when the screen on the thermostat matches the screen below 4 See the...

Page 34: ...bout three months 3 60 fan run time days about six months 4 90 fan run time days about nine months 5 120 fan run time days about one year 6 365 fan run time days about three years 0510 Humidifier Pad...

Page 35: ...hen you are asleep and want an energy saving temperature NOTE Schedule times are in 15 minute intervals 68 Time Heat Cool Fan Schedule Period Default Setting Revised Setting Default Setting Revised Se...

Page 36: ...t 71 7 To exit schedule without saving changes press CANCEL key any time Cancel a Schedule Period 1 Press SCHED key 2 Press EDIT key 3 Select the Day s of the week desired 4 Press schedule period you...

Page 37: ...SLEEP See note 5 MONTUE WEDTHUFRI AM HEAT CANCEL SLEEP WAKE DAY EVENING DONE AUTO FAN CANCEL PERIOD COOL EDIT PROG DAY CANCEL SLEEP WAKE DAY EVENING DONE AUTO FAN CANCEL PERIOD COOL PROG DAY MON TUE...

Page 38: ...To SYSTEM SCHED HOLD CLOCK SCREEN AUTO FAN TUE HEAT CANCEL Override Until PM STS32 STS32H Touchscreen Programmable Thermostat 75 Vacation Hold Change temperature setting for a designated number of day...

Page 39: ...ide Until DAYS CANCEL CLEAN SCREEN STS32 STS32H Touchscreen Programmable Thermostat 2 Use damp cloth slightly moistened with water or household glass cleaner to clean the screen 3 Repeat the above ste...

Page 40: ...ystem from shutting down due to lack of battery power Screen Locks Partially Locked Screen When partially locked the screen indicates Screen Locked for 5 to 7 seconds whenever the user attempts to pre...

Page 41: ...creen Programmable Thermostat 81 Remote Indoor Temperature If a remote indoor temperature sensor is installed the thermostat displays the inside temperature on the screen from the remote sensor s The...

Page 42: ...n be edited by using the MORE key or from the Installer Setup To view or reset the reminder by following steps before it expires 1 Press the MORE key until the filter reminder appears on the screen Th...

Page 43: ...appears on the screen This is the number of calendar days remaining on the Humidifier Pad reminder 2 Press the EDIT key 3 Use the Up and Down keys to change the number of calendar days 4 Press the DO...

Page 44: ...AM The thermostat alerts that the heating or cooling system to turn on before a scheduled time by showing Recovery on the screen Room Set To SYSTEM MORE SCHED HOLD CLOCK SCREEN AUTO FAN TUE Recovery...

Page 45: ...1 Press the MORE key until the inside humidity percent and dehumidification set point are shown 2 Use Up and Down arrow keys located to the right of the dehumidifier set point to set desired humidity...

Page 46: ...To SYSTEM HEAT MORE SCHED HOLD CLOCK SCREEN AUTO FAN STS32 STS32H Touchscreen Programmable Thermostat 91 1 Choose correct heat pump application in Installer Setup Number 0170 2 Choose Fossil Fuel Opt...

Page 47: ...r Lockout Temperature only the Auxiliary Heat operates When the outdoor temperature is above the Auxiliary Lockout Temperature only the Compressor operates See Fig 33 AUXILIARY LOCKOUT TEMPERATURE COM...

Page 48: ...A Heat W Heat On 94 STS32 STS32H Touchscreen Programmable Thermostat Table 9 Sequence of Operation for Heat Pump Systems System Setting Fan Setting Call for Action Energize Terminals Screen Message OF...

Page 49: ...ostat Installer Setup Number 0340 set to 3 the remote inside temperature is displayed on the Thermostat Home Screen as Inside Temperature The thermostat internal temperature sensor is not used See Fig...

Page 50: ...fy operation of equipment in System Test mode 98 STS32 STS32H Touchscreen Programmable Thermostat Table 10 Troubleshooting CONTINUED Symptom Possible Cause Action Heating equipment failure Check for 2...

Page 51: ...match the installed heating and or cooling equipment Heating equipment does not turn off and heat temperature setting is set below room temperature Heat On is not in the display Heating equipment is n...

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