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EWC Controls EWT-3102 User Manual

Touchscreen programmable thermostat
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EWT-3102/EWT-3103 Touchscreen

Programmable Thermostat

WED
PM
Room
Running As SCHED
HEAT
SYSTEM
FAN
AUTO
AUTO
MORE
SCHED
HOLD
CLOCK
SCREEN
EWC Controls, Inc. 385 HWY 33, Englishtown, NJ 07726 Ph: 732-446-3110 Fx: 732-446-5362

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Summary of Contents for EWC Controls EWT-3102

  • Page 1: Programmable Thermostat

    EWT-3102/EWT-3103 Touchscreen Programmable Thermostat Room Running As SCHED HEAT SYSTEM AUTO AUTO MORE SCHED HOLD CLOCK SCREEN EWC Controls, Inc. 385 HWY 33, Englishtown, NJ 07726 Ph: 732-446-3110 Fx: 732-446-5362...

  • Page 2: Table Of Contents

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Contents Application/Features........................2 Specifications/Ordering Information..................4 Installation..........................14 Wiring.............................18 Power the Thermostat......................35 Installer Setup......................... 4 8 Installer System Test....................... 5 9 Operation..........................6 2 Programming .......................... 6 8 Troubleshooting . … ........................9 8...
  • Page 3 The EWT-3102/EWT-3103 Thermostats provide temperature control for gas, oil, electric and heat pumps for up to 3 heats, 2 cool systems including dual fuel operation plus dehumidification control.
  • Page 4 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat 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 sophisticated to match your customer lifestyle.

  • Page 5: Specifications

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat SPECIFICATIONS Thermostat Description: Feature Description Powering methods Common wire with battery backup ·Gas, oil or electric heat with air conditioning System types (up to3 heat/2 cool) ·Warm air, hot water, high-efficiency furnaces, heat pumps, steam and gravity ·Heat only includes power to open and power to...
  • Page 6 0.6A Max Temperature Setting Range: Heating: 40°F to 90°F (4°C to 32°C). Cooling: 50°F to 99°F (10°C to 37°C). Operating Ambient Temperature: 32°F to 120°F (0°C to 49°C). Shipping Temperature: EWT-3102/EWT-3103 Thermostats: -30 °F to 150 °F (-34.4°C to 65.6°C).
  • Page 7 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Operating Relative Humidity (Non-condensing): EWT-3103 Thermostats: 5% to 90%. IAS-1: 5% to 95%. OAS-1: 5% to 95%. Humidity Setting Range (EWT-3103 models only): Cooling: 40% to 80% RH. Humidity Display Range (EWT-3103 models only): 0% to 99%.
  • Page 8 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Cool Indication: EWT-3102/EWT-3103 Touchscreen Thermostats show "Cool On" on the screen when Cool is activated. Heat Indication: EWT-3102/EWT-3103 Touchscreen Thermostats show "Heat On" on the screen when Heat is activated. Auxiliary Heat Indication: EWT-3102/EWT-3103 Touchscreen Thermostats show "Aux Heat On" on the screen when Auxiliary Heat is activated.

  • Page 9: Specifications/Ordering Information

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat ORDERING INFORMATION If you have additional questions, need further information, or would like to comment on our products or services, please e-mail: info@ewccontrols.com or phone: 1-800-446-3110.
  • Page 10 EWT-3103 EWT-3103 - Humidity Sensor Mounting Means: EWT-3102/EWT-3103 Touchscreen Thermostat: Mounts directly on the wall in the living space using mounting screws and anchors provided. Outdoor Sensor: Mounts outside of living space with mounting clip and screws provided. Remote Indoor Sensor: Mounts directly on the wall using mounting screws and anchors provided.
  • Page 11 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat 1.235 in.(30.60mm) 5.98 in.(152mm) Fig. 1. Touchscreen Thermostat dimensions in in. (mm).
  • Page 12 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat 1.77 in.(45mm) 1.51 in.(38.5mm) 0.84 in .(21.5mm) Fig. 2. Touchscreen Thermostat Back Case dimensions in in. (mm).
  • Page 13 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat 1.82 in.(46.3mm) 1.49 in.(38mm) 0.08 in.(2mm) 1.56 in .(39.7mm) 0.44 in .(11.2mm) 0.24 in.(6.2mm) Fig. 3. Outdoor Sensor Mounting Clip dimensions in in. (mm).
  • Page 14 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat 5.35 in.(136mm) 3.29 in.(83.5mm) 0.85 in .(21.5mm) Fig. 4. Cover Plate dimensions in in. (mm).

  • Page 15: Installation

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat INSTALLATION When Installing this Product... 1. Read these instructions carefully. Failure to follow the instructions can damage the product or cause a hazardous condition. 2. Check the ratings given in the instructions to make sure the product is suitable for your application.
  • Page 16 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat 5FEET 1.5METERS Fig. 5. Selecting thermostat location.

  • Page 17: Wiring

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Installing Wallplate CAUTION Electrical Hazard. Can cause electrical shock or equipment damage. Disconnect power before wiring. The thermostat can be mounted horizontally on the wall 1. Position and level the wallplate (for appearance only).
  • Page 18 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat WALL WIRES THROUGH WALL AND WIRE SLOT WALL ANCHORS M0UNTING HOLES(2) M0UNTING SCREWS(2) Fig. 6. Mounting wallplate.

  • Page 19: Wiring

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat WIRING (FIG. 9 - 21) All wiring must comply with local electrical codes and ordinances. 1. Select set of terminal identifications (Table 1) that corresponds with system type (conventional or heat pump in Fig. 7).
  • Page 20 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 1. Selecting Terminal Identifications for System Type. Wallplate Terminal Wiring Diagram System Type Identifications Reference Standard Heat/Cool Conventional 9, 10 Heat Only Conventional Heat Only with Fan Conventional Heat Only (Series 20) Power to open and...
  • Page 21 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Fig. 8. Inserting wires in terminal block. IMPORTANT: Use 18 gauge thermostat wires.

  • Page 22: Installer Setup 4

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 2. Terminal Designation Descriptions. Terminal Designation Description Power for cooling--connect to secondary side of cooling system RC (see Note 1) transformer Power for heating--connect to secondary side of heating system R (see Note 1)

  • Page 23: Conventional

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat OPTIONAL 24VAC COMMON OUTDOOR/INDOOR CONNECTION TEMPERATURE SENSOR COMPRESSOR FAN RELAY CONTACTOR HEAT RELAY CONVENTIONAL S1 S2 C R RC W W2 Y2 Y G 1. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

  • Page 24: Conventional

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat OPTIONAL 24VAC COMMON OUTDOOR/INDOOR CONNECTION TEMPERATURE SENSOR FAN RELAY COMPRESSOR CONTACTOR HEAT RELAY CONVENTIONAL S1 S2 C R RC W W2 Y2 Y G 1.POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

  • Page 25: Conventional

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat OPTIONAL OUTDOOR/INDOOR 24VAC TEMPERATURE COMMON SENSOR HEAT RELAY CONNECTION CONVENTIONAL S1 S2 C R RC W W2 Y2 Y G 1. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2. FACTORY INSTALLED JUMPER.

  • Page 26: Conventional

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat OPTIONAL OUTDOOR/INDOOR 24VAC TEMPERATURE COMMON SENSOR CONNECTION HEAT RELAY FAN RELAY S1 S2 C R RC W W2 Y2 Y G CONVENTIONAL 1. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2. FACTORY INSTALLED JUMPER.

  • Page 27: Conventional

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat TR SERIES 20 MOTOR OR OUTDOOR/INDOOR VALVE TEMPERATURE SENSOR CONVENTIONAL S1 S2 C R RC W W2 Y2 Y G 1. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2. FACTORY INSTALLED JUMPER.

  • Page 28: Conventional

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat OPTIONAL OUTDOOR/INDOOR 24VAC TEMPERATURE COMMON NORMALLY OPEN SENSOR CONNECTION ZONE VALVE S1 S2 C R RC W W2 Y2 Y G CONVENTIONAL 1. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2. FACTORY INSTALLED JUMPER.

  • Page 29: Conventional

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat OPTIONAL 24VAC COMMON OUTDOOR/INDOOR CONNECTION TEMPERATURE SENSOR COMPRESSOR FAN RELAY CONTACTOR CONVENTIONAL S1 S2 C R RC W W2 Y2 Y G 1. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2. FACTORY INSTALLED JUMPER.

  • Page 30: Conventional

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat OUTDOOR/INDOOR TEMPERATURE FAN RELAY SENSOR HEAT RELAY 2 COOL RELAY 2 HEAT RELAY 1 COOL RELAY 1 OPTIONAL 24VAC COMMON CONNECTION CONVENTIONAL S1 S2 C R RC W W2 Y2 Y G MUST COME...

  • Page 31: Conventional

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat OUTDOOR/INDOOR TEMPERATURE HEAT RELAY 2 SENSOR FAN RELAY COOL RELAY 2 HEAT RELAY 1 COOL RELAY 1 OPTIONAL 24VAC COMMON S1 S2 C R RC W W2 Y2 Y G CONVENTIONAL CONNECTION MUST COME...

  • Page 32: Heat Pump

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat S1 S2 C R RC W W2 Y2 Y G HEAT PUMP S1 S2 C R RC E L Y2 Y G O/B AUX CHANGEOVER COMPRESSOR VALVE RELAY OPTIONAL FAN RELAY OUTDOOR/INDOOR TEMPERATURE 24VAC...

  • Page 33: Heat Pump

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat S1 S2 C R RC W W2 Y2 Y G HEAT PUMP S1 S2 C R RC E O/B AUX L Y2 Y G COMPRESSOR 2 CHANGEOVER COMPRESSOR 1 VALVE OUTDOOR/INDOOR OPTIONAL FAN RELAY...

  • Page 34: Heat Pump

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat S1 S2 C R RC W W2 Y2 Y G HEAT PUMP S1 S2 C R RC E L Y2 Y G O/B AUX CHANGEOVER VALVE EMERGENCY HEAT 2 RELAY HEAT RELAY (AUXILIARY HEAT)

  • Page 35: Heat Pump

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat S1 S2 C R RC W W2 Y2 Y G HEAT PUMP S1 S2 C R RC E L Y2 Y G O/B AUX CHANGEOVER VALVE EMERGENCY HEAT 2 RELAY HEAT RELAY (AUXILIARY HEAT)

  • Page 36: Power The Thermostat

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat POWER THE THERMOSTAT You can choose from three methods to power the thermostat Batteries · only (AA alkaline). · 24 VAC common wire only. · 24 VAC common wire with battery backup (AA alkaline).

  • Page 37: Installing Batteries

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Installing Batteries 1. Install Two AA alkaline batteries on the 2. Locate and remove the tab. See Fig. 23. back of the thermostat as marked on the thermostat. See Fig. 22. REMOVE BATTERIES(2) Fig. 22. Installing batteries.
  • Page 38 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Mount Thermostat to Wallplate 1. Align the terminal screw blocks with the pins on the back of the thermostat. Push the thermostat straight onto the wallplate until it snaps into place. See Fig 24.
  • Page 39 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Locate and Mount Outdoor Temperature Sensor (Optional) Mount the sensor where (see Fig. 25): ·the settings cannot be tampered with. ·there is good air circulation. ·it can measure true outdoor ambient temperature. ·there is a flat surface.
  • Page 40 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Fig. 25. Typical locations for OAS-1 Outdoor Sensor.

  • Page 41: Operation 6

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat CAUTION Electrical Interference (Noise) Hazard. Can cause erratic system operation. Keep wiring at least one foot away from large inductive loads such as motors, line starters, lighting ballasts and large power distribution panels. Use shielded cable to reduce interference when rerouting is not possible.
  • Page 42 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat CAUTION Electrical Shock Hazard. Can cause electrical shock or equipment damage. Disconnect power supply before connecting wiring. Wiring must comply with applicable codes, ordinances and regulations: 1 . Wire Outdoor Sensor to S1and S2 terminals on the thermostat. If leadwire provided is not long enough, you need an extra cable to reach the hole at location.
  • Page 43 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat WIRING HOLE THROUGH OAS-01 STRUCTURE 1. USE APPROPRIATE MOUNTING MEANS FOR THE TYPE OF STRUCTURE. 2. PLUG WIRING HOLE WITH NON-HARDENING CAULK OR PUTTY . Fig. 26. Wire Outdoor Sensor to the thermostat.
  • Page 44 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Locate and Mount Remote Indoor Temperature Sensor (Optional) 1. Choose a location (see Fig. 27) for mounting the sensor on an inside wall about 5 ft (1.5m) above the floor. 2. Be sure wire distance between sensor and thermostat is less than 65.61 ft（6m）.
  • Page 45 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat 5FEET 1.5METERS Fig. 27. Typical location for Indoor Sensor.
  • Page 46 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Wire Indoor Sensor CAUTION Electrical Interference (Noise) Hazard. Can cause erratic system operation. Keep wiring at least one foot away from large inductive loads such as motors, line starters, lighting ballasts and large power distribution panels.
  • Page 47 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat CAUTION Electrical Shock Hazard. Can cause electrical shock or equipment damage. Disconnect power supply before connecting wiring. Wiring must comply with applicable codes, ordinances and regulations. 1. Wire Indoor Sensor to S1 and S2 terminals on the thermostat. For an example of general wiring of IAS-1, see Fig.
  • Page 48 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat IAS-01 IAS-01 IAS-01 IAS-01 IAS-01 S1 S2 C R RC S1 S2 C R RC W W2 Y2 Y G IAS-01 IAS-01 IAS-01 IAS-01 IAS-01 IAS-01 S1 S2 C R RC IAS-01 IAS-01 IAS-01 1.

  • Page 49: Installer Setup

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat INSTALLER SETUP Follow these steps to enter the Installer 2. Press the two blank keys on either side Setup: of the center blank key for approximately 1. Press and release the System Key. five seconds until screen changes.
  • Page 50 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat 3. Release the two blank keys when the 4. See screen below to review how the screen on the thermostat matches the thermostat keys are used during Installer screen below. Setup. See Tables 3-5 for the Installer Setup Numbers and Settings.
  • Page 51 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 3.Installer Setup Menu. Installer Setup Installer Setup Settings Notes Number Name Date Select first two digits of current calendar year 0120 It cannot be changed. (Year Upper) (2005, etc). Date Select last two digits of current calendar year (05 0130 2001 - 2099 available.
  • Page 52 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 3.Installer Setup Menu. (CONTINUES) Installer Setup Installer Setup Settings Notes Number Name 0-gas or oil furnace equipment controls fan in Only shown conventional heating (factory setting). 0180 Fan Control in Heating system is selected. If heat pump 1-electric furnace thermostat controls fan in is chosen, fan defaults to electric.
  • Page 53 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 3.Installer Setup Menu. (CONTINUES) Installer Setup Installer Setup Settings Notes Number Name 1-1 cph used for steam and gravity. 3-3 cph used for hot water system and high Not shown if system selection is Cycles per hour (cph) for efficiency (90% or better) furnaces.
  • Page 54 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 3.Installer Setup Menu. (CONTINUES) Installer Setup Installer Setup Settings Notes Number Name 3-3 cph for hot water systems and high efficiency (90% or better) furnaces. Cycles per hour (cph) Only shown if 2H/1C or 3H/2C...
  • Page 55 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 3.Installer Setup Menu. (CONTINUES) Installer Setup Installer Setup Settings Notes Number Name 1-daylight savings is on (factory setting). Set to 0 in areas that do not 0330 Daylight Savings follow daylight savings. 0-daylight savings is off.
  • Page 56 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 3.Installer Setup Menu. (CONTINUES) Installer Setup Installer Setup Settings Notes Number Name 0-no auxiliary heat lockout. Shown if electric is chosen for 40°F (4.5°C) backup heat source 45°F (7°C) Heat Pump Auxiliary outdoor temperature sensor...
  • Page 57 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 3.Installer Setup Menu. (CONTINUES) Installer Setup Installer Setup Settings Notes Number Name 0-humidifier pad replacement reminder off. Humidifier Pad 1-90 calendar days. 0510 Replacement Reminder 2-180 calendar days. 3-365 calendar days. 0-UV lamp replacement reminder off.
  • Page 58 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 3.Installer Setup Menu. (CONTINUES) Installer Setup Installer Setup Settings Notes Number Name 0-no extended fan operation after call for Not shown if fan operation is Extended Fan On Time heat ends. 0650 set to fossil fuel or in Cool Only...
  • Page 59 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 3.Installer Setup Menu. (CONTINUES) Installer Setup Installer Setup Settings Notes Number Name 1-less aggressive temperature control (could Applies to recovery ramp. cause temperature undershoot). Temperature Control in Choose 1 if getting 2-Standard temperature control in cooling...

  • Page 60: Installer System Test

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat INSTALLER SYSTEM TEST Use the Installer System Test to test the W1 W2 E AUX Y1 Y2 and L terminals. CAUTION Equipment Damage Hazard. Minimum compressor off time is bypassed during Installer System Test.
  • Page 61 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat UP ARROW KEY SYSTEM STAUS SYSTEM TEST ADVANCES TO NUMBER NUMBER NEXT SYSTEM TEST NUMBER DONE DONE KEY DOWN ARROW UP ARROW EXITS INSTALLER TURNS THE TURNS THE SYSTER OFF SYSTER ON SYSTEM TEST...
  • Page 62 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Installer System Tests Table 4. Installer System Test. System Status Number and System Test Number Test Type Description 1-Cool stage 1 and stage 2 turn on. Test 1 Cooling System Test 0-Cool is off.

  • Page 63: Operation

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat OPERATION Thermostat Keys Thermostat Display RUNNING AS SCHED TIME DISPLAY CURRENT SHOWS THE SCHED HOLD CLOCK SCREEN SHOWS THERMOSTAT IS TIME OF DAY. HOLD ENTERS SETS A PERMANENT SETS THE TIME LOCKS OUT THE...
  • Page 64 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat System and Fan Settings System The System key selections vary based on your heating and/or cooling system type. Heat Thermostat controls the heating system. Both heating and cooling systems are off. Cool Thermostat controls the cooling system.
  • Page 65 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat User Setup Follow these steps to enter the User 2．Press the center blank key for Setup: approximately five seconds until the screen 1．Press and release the System key. changes. Room Room Running As SCHED...
  • Page 66 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat 3．Release the center blank key when the 4．See the screen below to review how the screen on the thermostat matches the thermostat keys are used during the User screen below. Setup. See Table 5 for the User Setup numbers and settings.
  • Page 67 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 5. User Setup Settings. User Setup User Setup Settings Number Name Date 0120 It cannot be changed. (Year Upper) Date 0130 Select last two digits of current calendar year (05 for year 2005, etc).
  • Page 68 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 5. User Setup Settings. (CONTINUES) User Setup User Setup Settings Number Name 0-off (factory setting). 0520 UV lamp reminder 1-1 year. Number of schedule 2-two (Wake and Sleep). 0540 periods available 4-four (Wake, Leave, Return, Sleep) factory setting.

  • Page 69: Programming

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat PROGRAMMING Preprogrammed Energy Star Settings Table 6 shows default program settings. Visit the Energy Star web site at www.energystar.gov for additional education and resources on programmable thermostats. Table 6. Energy Star Default Program Settings.
  • Page 70 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Edit Schedule 1. Press Sched key. 2. Press PROG DAY key to review the programs to see that the settings are compatible with your lifestyle. MON TUE WED THU FRI MON TUE WED THU FRI...
  • Page 71 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat 3. Press the edit then you press PROG DAY MON TUE WED THU FRI key to select the program days MON TUE WED THU FRI CANCEL PERIOD HEAT COOL AUTO CANCEL DONE SLEEP EDIT...
  • Page 72 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat NOTE: To set a Program Schedule for the MON TUE WED THU FRI remaining days of the week, repeat steps 1-9. Example: If Mon – Fri Was selected first, go back and CANCEL Repeat steps 1- 6 for Sat and Sun.

  • Page 73: Fan Schedule

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat On Fan runs continuously (programmable MON TUE WED THU FRI for all schedule periods). Circ Fan runs randomly for approximately 35% of schedule period when there is no CANCEL call for cooling or heating (programmable for PERIOD all scheduled periods).
  • Page 74 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Operate EWT-3102/EWT-3103 Manual Override of Fan Schedule Touchscreen Use Fan key to change fan work states by manual. Set Time Auto -fan is automatically following the Fan 1. Press Clock. schedule (choices are Auto, On or Circulate).

  • Page 75: Set Temperature Overrides

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Set Temperature Overrides Override Until The thermostat has three temperature override options: Override Temperature Room Until, Permanent Override and Vacation Hold. Override Until (TEMPORARY Override) Set To Holds temperature temporarily until the next SYSTEM...
  • Page 76 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat VACATION HOLD Change temperature setting for a designated number of days. 1 ．Press the Up and Down arrow keys to set the desired temperature while away on vacation. Notice that —Hold Temperature Until time is shown on the screen. (This is the time the Vacation Hold override expires after the number of day’s ends.)
  • Page 77 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Clean Thermostat Screen The thermostat has a touch screen interaction. Follow these steps to clean the screen without making thermostat changes: 1. Press the Screen key. Thermostat locks out all touch keys for 30 seconds to allow for cleaning.

  • Page 78: Replace Batteries

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Replace Batteries 2. Use damp cloth slightly moistened with water or household glass cleaner to clean 1. When the Battery indicator is flashing, the screen. replace the batteries promptly with two 3. Repeat the above steps, as necessary.
  • Page 79 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat WALLPLATE BATTERIES(2) TERMINAL SCREW BLOCK PINS ON BACK OF THERMOSTAT 4. Align the screw blocks with the pins on the 5. Push the thermostat straight onto the back of the thermostat. wallplate until it snaps into place.
  • Page 80 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Battery Tips Partially Locked Screen 1. Replace the batteries as soon as “Batt” When partially locked, the screen indicates flashes in the display. The Battery indicator Screen Locked for 5 to 7 seconds whenever the flashes in the display one month before the user attempts to press a key that is locked.

  • Page 81: Outdoor Temperature

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Outdoor Temperature If an outdoor temperature sensor is installed, thermostat displays outside temperature in the lower right corner of the Home Screen. Outside Room Running As SCHED Outside CANCEL DONE Set To SYSTEM HEAT...
  • Page 82 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Remote Indoor Temperature ONE REMOTE INDOOR SENSOR INSTALLED (OPTIONAL) If a remote indoor temperature sensor is If one remote indoor temperature sensor is installed, the thermostat displays the inside temperature on the screen from the remote used, the screen showing the Inside sensor(s).The thermostat internal...

  • Page 83: Filter Change Reminder

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Indoor Air Quality Reminders The remaining run time days can be viewed by pressing the More key; the remaining Filter Change Reminder days can be edited using the More key or The filter change reminder must be turned from the Installer Setup.
  • Page 84 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat 2. Press the Edit key. 3. Use the Up and Down keys to change the number of run-time days. FILTER FILTER DAYS DAYS RESET RESET MORE CANCEL DONE MORE CANCEL DONE EDIT 4. Press the Done key to go back to the...
  • Page 85 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat 5. Press the Reset key to activate the new 6. Press the Done key to return to the Home number of days selected in the previous Screen. screen. FILTER DAYS CANCEL DONE...
  • Page 86 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Humidifier Pad Reminder UV Lamp Reminder The Humidifier Pad change reminder must be The UV Lamp change reminder must be turned turned on from the Installer Setup. Once on from the Installer Setup. Once expired, the...
  • Page 87 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Temperature Recovery The thermostat feature, Adaptive Intelligent Recovery, eliminates all guesswork when Room setting the thermostat schedule. Recovery Simply set the program schedule to the time that the comfort temperature is desired. The thermostat then turns on the heating or...
  • Page 88 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Minimum Off-Timer The Thermostat has built-in compressor When the minimum-off timer expires, Cool protection (minimum- off timer) that prevents On or Heat On appears solidly in the the compressor from restarting too early after display and the compressor and fan turn on.
  • Page 89 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Inside Humidity Level Select models can sense the humidity level in the home. The humidity level in the home is shown in the lower right corner of the Home Screen. Room Humidity Running As SCHED...
  • Page 90 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Control Dehumidification Setting 2. Use Up and Down arrow keys, located to (Select Models) the right of the dehumidifier set-point, to set desired humidity level dehumidification Select models read the inside humidity level in the summer.
  • Page 91 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Special Heat Pump Operation Heat Pump Emergency Heat LCD Heat Pump Indication (Requires Indication (Requires 24 VAC 24 VAC Common Connections) Common Connection) “E5” indication is located in the screen of The thermostat indicates “E5” indicator when the thermostat.
  • Page 92 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat 1. Choose correct heat pump application in Installer Setup Number 0170. COMPRESSOR ONLY 2. Choose Fossil Fuel Option as the backup heat source in Installer Setup BALANCE Number 0200. POINT 3. Choose No External Fossil Fuel Kit...
  • Page 93 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Heat Pump with Electric Auxiliary OPERATION IN EMERGENCY HEAT MODE (Backup) Heat and Outdoor The balance point (outside) temperature is Temperature Sensor not used in the Emergency heat mode. When the thermostat is moved to the 1.
  • Page 94 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Operation in Heat Mode Operation in Emergency Heat Mode When the outdoor temperature is below the Once the thermostat is placed into the Emergency Heat mode, the compressor Compressor Lockout Temperature, only the and auxiliary lockout features are turned Auxiliary Heat operates.
  • Page 95 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 7. Sequence of Operation for Conventional Systems. System Setting Fan Setting Call for Action Energize Terminals Screen Message Auto None None None Cool Auto None None None Cool or Auto Auto Stage 1 Cooling...
  • Page 96 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 9. Sequence of Operation for Heat Pump Systems. System Setting Fan Setting Call for Action Energize Terminals Screen Message Auto None None Cool Auto None None Cool or Auto Auto Stage 1 Cooling...

  • Page 97: Outdoor Temperature Sensor

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Outdoor Temperature Sensor The Outdoor Sensor converts outdoor Operation ambient temperature to a resistance that the thermostat can interpret. When installed with Thermostat Installer Setup The sensor has a negative temperature Number 0340 set to 1 or 2, the outside...
  • Page 98 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Remote Indoor Temperature The Wall Mount Temperature Sensor converts Sensor room temperature to a resistance that the thermostat can interpret. Operation The sensor has a negative temperature When installed with Thermostat Installer coefficient (NTC), which means that resistance Setup Number 0340 set to 3, the remote decreases as the temperature increases.

  • Page 99: Troubleshooting

    EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat TROUBLESHOOTING (TABLE 10) Table 10. Troubleshooting. Symptom Possible Cause Action Check for 24 VAC between C and RC. Display does not come on. Thermostat is not being powered. Check that AA batteries are installed correctly and are good.
  • Page 100 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 10. Troubleshooting. (CONTINUED) Symptom Possible Cause Action Check for 24 VAC at the equipment on the secondary side of the transformer between power and common. If voltage is not present, check the heating equipment to find the cause of the problem.
  • Page 101 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 10. Troubleshooting. (CONTINUED) Symptom Possible Cause Action Check for 24 VAC between the cool terminal (Y) and transformer common. If Loose or broken wire connection Cooling does not turn on (Cool voltage is not present, check the wire between thermostat and cooling On is solid in the display).
  • Page 102 EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat Table 10. Troubleshooting. (CONTINUED) Symptom Possible Cause Action System Type (Installer Setup System Type (Installer Setup Number Cannot set the system setting to Heat. Number 0170) to match the installed 0170) is set to Cool Only.

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