EWC Controls EWT-3900 Technical Bulletin

Installer : Save these instructions for future use!
FAILURE TO READ AND FOLLOW INSTRUCTIONS CAREFULLY BEFORE INSTALLATION OR
OPERATION COULD DAMAGE THIS CONTROL OR CAUSE PROPERTY DAMAGE.
DESCRIPTION
The EWT-3900 7Day/5-2 Day Wireless Programmable
Digital Solid State Thermostat uses a microcomputer to
provide precise time and temperature control. This wireless
thermostat offers additional flexibility to design heating and
cooling systems where hard wired installations would be
difficult to do.
The Model EWT-3900 Wireless Thermostat is Linked to
the Receiver at the factory. Simply power up the
Receiver, then program and operate the Thermostat.
Features:
The Thermostat is powered by a rechargeable lithium-ion
battery.
The receiver module is powered with 24VAC from a
Control Panel or 24VAC Class 2 Transformer.
The receiver module terminal block has the following
terminals: R, C, W1/E, W2, Y1, Y2, G, O, B and one
NC (no connection) terminal.
Compatible Equipment: ULTRA-ZONE Control Panels:
NCM-300, BMPlus3000 & UZC-4.
Single or two stage heating and cooling equipment
Gas, Electric, Oil or Hydronic. One or two stage
compressor heat pump with electric backup.
Simultaneous heat and cool program storage.
Program storage is retained in case of power loss.
LCD continuously displays time and room temperature.
Temperature set point is displayed when it is being
changed.
Temperature display can be configured in °F or °C.
The Thermostat can be programmed between
45°F and 95°F.
Backlit display.
Air Filter Replacement Monitor.
Electrical Ratings
19-30VAC 50/60 Hz
1.0 Amp (Max load per terminal)
Thermal Ratings
Set point Temperature Range 45°F to 95°F
Operating Ambient Temperature Range 30°F to 99°F
Storage Temperature Range 14°F to 140°F
Operating Humidity Range 0-90% R.H. (Non Condensing)
TB-236 090375A0236 Rev. B
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-446-5362
TECHNICAL BULLETIN
Wireless Programmable Digital Thermostat
Copyright © 2009 EWC Controls All Rights Reserved
Model EWT-3900
MON
1
Room
SYSTEM
HEAT
°
FAN
:
PM
AUTO
DAY/
MODE
TIME
PROG
HOLD
PROG FAN
DAY
/RUN
Contents:
1 EWT 3900 Thermostat
1 EWT 3900 Receiver
1 USB Adapter Cord
6 Plastic Wall Anchors
6 #8 x 1" Screws
1 TB-236 Technical Bulletin
Accessories: (not included)
EWT-BC Wall Outlet Charger
Replacement Battery
Replacement Charging Cord
Charging Requirements:
EWT-BC Wall Outlet Charger
or
PC Computer with USB Port
ATTENTION
!
This product does not contain mercury. However, this
product may replace a unit which contains mercury.
EWC Controls Inc. would like to advise all technicians
and consumers that all mercury thermostats should
be recycled.
E-Mail- info@ewccontrols.com
LCD Display: Shows
Time, Day, Temperature
and other system data.
Reviews filter usage
in hours and minutes
and also activates
standby mode.
Soft touch Programming
and Function Buttons
Figure 1
1