EWC Controls EWT-3102, EWT-3103 User Manual

EWT-3102/EWT-3103 Touchscreen

Programmable Thermostat

EWC Controls, Inc. 385 HWY 33, Englishtown, NJ 07726 Ph: 732-446-3110 Fx: 732-446-5362

Room

Running As SCHED

SYSTEM

MORE SCHED HOLD CLOCK

SCREEN

AUTO

FAN

WED

AUTO

HEAT

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.........................................................................................................................48

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

Operation................................................................................................................................62

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

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

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

PRODUCT DATA

APPLICATION

The EWT-3102/EWT-3103 Touchscreen Programmable Thermostat is an effortless, 7-Day programmable thermostat that provides universal system compatibility, precise comfort control and is easy-to-program. 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.

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.

·Touchscreen interaction

·Real-time clock keeps time during power failures and automatically updates to

daylight savings.

·"Sav ing Changes" notification let s you kno w when the schedul e changes have been saved.

·Change/check reminders let y ou know when to service or replace filters or batteries

·Various Hold options allow you to override the program schedule, as desired.

·Armchair programming allows you to remove the thermostat from the wall for

programming.

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

SPECIFICATIONS

Thermostat Description:

Feature

Description

Powering methods Common wire with battery backup System types (up to3 heat/2 cool)

·Gas, oil or electric heat with air conditioning

·Warm air, hot water, high-efficiency furnaces, heat

pumps, steam and gravity

·Heat on

ly inclu

des power to open and power to close zone valves(series 20) and normally-open zone valves

·Heat only with fan

·Cool 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

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

Electrical Ratings:

Terminal

Voltage (50/60 Hz) Running Current

W Heating 20 - 30 VAC 1.0A Max W Heating (Power pile) 750 mVDC 100 mA Y Cooling 20 - 30 VAC 1.0A Max G Fan 20 - 30 VAC 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 °

(-34.4°C to 65.6°C).

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

Operating Relative Humi dity (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%.

Cycle Rates (at 50% Load): Heating: Selectable 1 - 12 cycles per hour. Cooling: Selectable 1 - 6 cycles per hour.

Clock

ccuracy: +/- 1 minute per month.

Batteries:

Two replaceable AA alkaline batteries: Power thermostats when 24 VAC common is not used. Non-replaceable lithium battery with ten-year life under normal use to hold calenda

and time settings. Alkaline batteries keep calendar and time after lithium battery is no longe

functional.

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 "

x Heat On" on the screen when

uxiliary Heat is activated.

Emergency Heat Indication: EWT-3102/EWT-3103 Touchscreen Thermostats show "

at On" on the screen when

Emergency Heat is activated and the System mode is in the Emer position.

Calibration: EWT-3102/EWT-3103 Touchscreen Thermostats are factory-calibrated and require no field calibration.

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

ORDERING INFORMATION

If you have additional questions, need further information, or would like to comment o n our products or services, please e-mail: info@ewccontrols.com or phone: 1-800-446-3110.

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

Nomenclature:

Series System Stages

Application

EWT-3102 EWT-3103

3H/2C EWT-3102 - Standard

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.

Dimensions:

1. EWT-3102/EWT-3103 Touchscreen Thermostat: see Fig 1.

2. EWT-3102/EWT-3103 Touchscreen Thermostat Back Case: see Fig. 2

3. EWT-3102/EWT-3103 Outdoor Sensor Mounting Clip: see Fig 3.

4. EWT-3102/EWT-3103 Cover Plate: see Fig 4.

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

Fig. 1. Touchscreen Thermostat dimensions in in. (mm).

5.98 in.(152mm)

4.48in. (114mm)

1.235 in.(30.60mm)

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

Fig. 2. Touchscreen Thermostat Back Case dimensions in in. (mm).

1.51 in.(38.5mm) 0.84 in .(21.5mm)

1.77 in.(45mm)

1.67 in.(42.5mm)

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

Fig. 3. Outdoor Sensor Mounting Clip dimensions in in. (mm).

1.49 in.(38mm)

(

)

(

)

1.82 in.(46.3 mm)

1.10 in.(28.1mm)

0.62 in.(16mm)

1.56 in .(39.7mm)

0.08 in.(2mm)

0.44 in .(11.2mm)

0.24 in.(6.2mm)

(

)

(

)

(

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

Fig. 4. Cover Plate dimensions in in. (mm).

3.29 in.(83.5mm)

0.85 in .(21.5mm)

3.29 in.(83.5mm)

5.35 in.(136mm)

4.13 in.(105mm)

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 th e instructions to make sure the product is suitable for your application.

3. Installer must be a trained, experienced service technician.

4. After completing 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 a

average temperature. See Fig. 5.

Do not install the thermostat where it can be affected by:

----Drafts or dead spots behind doors and in corners.

----Hot or cold air from ducts.

----Radiant heat from sun or appliances. Concealed pipes and chimneys.

----Unheated (uncooled) areas such as an outside wall behind the thermostat.

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

Fig. 5. Selecting thermostat location.

5FEET

1.5METERS

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).

2. Use a pencil to mark the mounting holes.

3. 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 flush with the wall.

4. Position the wallplate over the holes, pulling wires through the wiring opening. See Fig. 6

5. Insert the mounting screws into the holes and tighten.

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

Fig. 6. Mounting wallplate.

WALL

WIRES THROUGH WALL AND WIRE

SLOT

WALL ANCHORS

M0UNTING HOLES(2)

M0UNTING SCREWS(2)

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).

2. Loosen the screws for the appropri ate system type selected; see Tabl e 1. See Table 2 for terminal designation descriptions. Insert wires in the terminal block under the loosened screw. See Fig. 8.

3. Securely tighten each screw.

4. Push excess wire back into the hole.

5. Plug the hole with nonflammable insulation to prevent drafts from affecting the thermostat.

6. See Fig. 9 through 21 for typical wiring hookups.

Fig. 7. Selecting terminal identifications for system type.

CONVENTIONAL

HEAT PUMP

SCREW TERMINALS

S1 S2 C R RC E L Y2 Y G

S1 S2 C R RC W W2 Y2 Y G

O/B AUX

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

Table 1. Selecting Terminal Identifications forSystem Type.

System Type

Wallplate Terminal

Identifications

Wiring Diagram

Reference

Standard Heat/Cool Conventional

9, 10

Heat Only Conventional

Heat Only with Fan Conventional

Heat Only (Series 20) Power to open and

power to close zone valves

Conventional

Normally Open Zone Valves Heat Only

Conventional

Cool Only Conventional

Standard Multistage up to 2 Heat/2 Cool Conventional

16, 17

Heat Pump with No Auxiliary Heat Heat Pump

18, 19

Heat Pump with Auxiliary Heat Heat Pump

20, 21

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

IMP

TANT: Use 18 gauge thermostat wires.

Fig. 8. Inserting wires in te

minal block.

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

Table 2. Terminal Designation Descriptions.

Terminal Designation Description

RC (see Note 1)

Power forcooling--connect to secondaryside ofcooling system

transforme

R (see Note 1)

Power forheating--connect to secondaryside of heating system

transforme

C (see Note 2) Common wire from secondary side of cooling system transformer

W Heat relay

Y Compressor contactor

G Fan relay

Y2 Second stage cooling

W2 Second stage heat relay

O/B (see Note 3) Changeover valve for heat 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 remote sensor

NOTES:

1. When used in a single-transformer system, leave metal jumpe r wire in place between RC and R. If used on a two-transformer system, remove metal jumper wire between RC and R.

2. Common wire is optional when thermostat is used with batteries.

3. If thermostat is configured for a heat pump system in the Installer Setup, configure changeover valve

for cool (O-factory setting) or heat (B).

4. L terminal is an input (system monitor) when the System mode is in the Hea t, Off, Cool or Auto position. L terminal is a 24 VAC output when System mode is Emergency Heat. Must connect the 24 VAC Common when using the L terminal. See LCD indications on page 90.

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

1. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2. FACTORY INSTALLED JUMPER.

3. OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT CABLE.

Fig. 9. Typical hookup of conventional single-stage heat and cool system with single

transformer (1H/1C conventional).

CONVENTIONAL

S1 S2 C R RC W W2 Y2 Y G

OUTDOOR/INDOOR TEMPERATURE SENSOR

COMPRESSOR CONTACTOR

OPTIONAL 24VAC COMMON

CONNECTION

FAN RELAY

HEAT RELAY

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

1.POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2.OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT CABLE.

Fig. 10. Typical hookup of conventional single-stage heat and cool system with two

transformers (1H/1C conventional).

CONVENTIONAL

S1 S2 C R RC W W2 Y2 Y G

OUTDOOR/INDOOR TEMPERATURE SENSOR

FAN RELAY

HEAT RELAY

COMPRESSOR CONTACTOR

OPTIONAL 24VAC COMMON CONNECTION

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

1. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2. FACTORY INSTALLED JUMPER.

3. OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT CABLE.

Fig. 11. Typical hookup ofheat-only system (1H conventional).

CONVENTIONAL

S1 S2 C R RC W W2 Y2 Y G

OUTDOOR/INDOOR TEMPERATURE SENSOR

HEAT RELAY

OPTIONAL 24VAC COMMON CONNECTION

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

1. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2. FACTORY INSTALLED JUMPER.

3. OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT CABLE.

Fig. 12. Typical hookup of heat only system with fan (1H conventional).

CONVENTIONAL

S1 S2 C R RC W W2 Y2 Y G

OUTDOOR/INDOOR TEMPERATURE SENSOR

HEAT RELAY

OPTIONAL 24VAC COMMON CONNECTION

FAN RELAY

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

1. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2. FACTORY INSTALLED JUMPER.

3. OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT CABLE.

Fig. 13. Typical hookup of heat only power to open and power to close zon e valve

(Series 20) system.

OUTDOOR/INDOOR TEMPERATURE SENSOR

SERIES 20 MOTOR OR VALVE

CONVENTIONAL

S1 S2 C R RC W W2 Y2 Y G

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

1. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2. FACTORY INSTALLED JUMPER.

3. OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT CABLE.

Fig. 14. T ypic al hookup of hea t only syst em with normal ly open zone valves.

CONVENTIONAL

S1 S2 C R R C W W2 Y 2 Y G

OUTDOOR/INDOOR TEMPERATURE SEN S OR

NORMALLY OPEN

ZON E VAL V E

OPTIONAL 24VA C COM MON CONNECTION

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

1. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2. FACTORY INSTALLED JUMPER.

3. OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT CABLE.

Fig. 15. Typical hookup of coolonly system (1C conventional).

CONVENTIONAL

S1 S2 C R RC W W2 Y2 Y G

OUTDOOR/INDOOR

TEMPERATURE SENSOR

COMPRESSOR CONTACTOR

OPTIONAL 24VAC COMMON CONNECTION

FAN RELAY

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat

1. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2. FACTORY INSTALLED JUMPER.

3. OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT CABLE.

Fig. 16. Typical hookup of conventional multistage two-s tage heating and two-stage

cooling in a single-transformer system (2H/2C, 2H/1C or 1H/2C conventional).

S1 S2 C R RC W W2 Y2 Y G

OUTDOOR/INDOOR TEMPERATURE SENSOR

OPTIONAL 24VAC COMMON

CONNECTION

MUST COME FROM THE COOLING

TRANSFORMER

FAN RELAY

HEAT RELAY 1

HEAT RELAY 2

COOL RELAY 2

COOL RELAY 1

CONVENTIONAL

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EWC Controls EWT-3102, EWT-3103 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual