Model EWT-3900
Wireless Programmable Digital Thermostat
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.
Features:
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The Thermostat is powered by a rechargeable lithium-ion
battery.
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The receiver module is powered with 24VAC from a
Control Panel or 24VAC Class 2 Transformer.
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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.
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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.
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Simultaneous heat and cool program storage.
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Program storage is retained in case of power loss.
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LCD continuously displays time and room temperature.
Temperature set point is displayed when it is being
changed.
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Temperature display can be configured in °F or °C.
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The Thermostat can be programmed between
45°F and 95°F.
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Backlit display.
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Air Filter Replacement Monitor.
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.
AUTO
FAN
SYSTEM
HEAT
PM
:
1
°
MON
Room
DAY/
TIME
PROG
PROG
DAY
FAN
HOLD
/RUN
MODE
Reviews filter usage
in hours and minutes
and also activates
standby mode.
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)
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.
LCD Display: Shows
Time, Day, Temperature
and other system data.
Soft touch Programming
and Function Buttons
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
TB-236 090375A0236 Rev. B
TECHNICAL BULLETIN
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-446-5362 E-Mail- [email protected]
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Copyright © 2009 EWC Controls All Rights Reserved
Charging Requirements:
EWT-BC Wall Outlet Charger
PC Computer with USB Port
or
Figure 1
