EWC Controls EWT-3102 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
PM
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
1
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.
2
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.
·"Saving Changes" notification lets you know when the schedule changes have been
saved.
·Change/check reminders let you 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.
3
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
4
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 °
F
(-34.4°C to 65.6°C).
5
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%.
Cycle Rates (at 50% Load):
Heating: Selectable 1 - 12 cycles per hour.
Cooling: Selectable 1 - 6 cycles per hour.
Clock
A
ccurac
y
: +/- 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
r
and time settings. Alkaline batteries keep calendar and time after lithium battery is no longe
r
functional. 6
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.
7
Auxiliary Heat Indication:
EWT-3102/EWT-3103 Touchscreen Thermostats show "
Au
x Heat On" on the screen when
A
uxiliary Heat is activated.
Emergency Heat Indication:
EWT-3102/EWT-3103 Touchscreen Thermostats show "
He
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 on our
products or services, please e-mail: info@ewccontrols.com or phone: 1-800-446-3110.
8
EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat
Nomenclatu
r
e:
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.
9
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.
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1
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