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: [e-mail] or phone: [phone].
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.

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat
10
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
11
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). 12
1.49 in.(38mm)
0.17in.(4.2mm)
R1.6in.(4mm)
1.82 in.(46.3mm)
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)
R0.04in.(1mm)
R0.098in.(2.5mm)
R0.098in.(2.5mm)

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat
Fig. 4. Cover Plate dimensions in in. (mm). 13
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 Installin
g
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.
3. Installer must be a trained, experienced service technician.
4. After completing installation, use these instructions to check out the product operation.
Selectin
g
Location
Install the thermostat about 5 ft. (1.5m) above the floor in an area with good air circulation a
t
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.
14

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat
Fig. 5. Selecting thermostat location.
15
5FEET
1.5METERS

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat
Installin
g
Wallplate
CAUTION
Electrical Hazard.
Can cause electrical shock or equipment damage.
Disconnect power before wiring.
The thermostat can
b
e mounted horizont
a
lly on the w
a
ll
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.
16

EWT-3102 / EWT-3103 Touchscreen Programmable Thermostat
Fig. 6. Mounting wallplate. 17
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 appropriate system type selected; see Table 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. 18
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 Te
r
minal Identifications fo
r
System Type.
System Type Wallplate Terminal
Identifications Wiring Diagram Reference
Standard Heat/Cool Conventional 9, 10
Heat Only Conventional 11
Heat Only with Fan Conventional 12
Heat Only (Series 20) Power to open and
power to close zone valves Conventional 13
Normally Open Zone Valves Heat Only Conventional 14
Cool Only Conventional 15
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
19