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
PROGRAMMING
CONFIGURATION
Permanent Override or a Designated Day Override
To hold your Manual Override for a designated number of days.
1)
Press the
key once to make the current program temperature the
HOLD temperature. “Permanent Override” will be displayed on the LCD
and the program number will disappear.
2)
Use the
or keys to set the Permanent Manual Override
temperature you desire.
3)
Press
key to initiate Permanent Manual Override or wait 20
seconds for it to take effect.
You are now set in Permanent Override Mode. To set your thermostat to
hold it for a designated number of days:
1)
Press the key once. Override Until
1 Days
will appear on the LCD
and the clock will disappear.
2)
Press the key to adjust the number of override days.
3)
After 30 seconds the change will take affect.
HOLD
/RUN
HOLD
/RUN
HOLD
/RUN
DAY/
TIME
HOLD
/RUN
To end Override:
To end a Designated Day Override, press the
key once. The
thermostat will return to the current program and the HOLD will be
canceled.
To end Permanent Override press the key twice.
Auto Changeover
When the system mode selector is in the AUTO position, the
thermostat will automatically change between Heating and Cooling
modes as the actual room temperature fluctuates. We recommend
keeping the programmed heating and cooling temperature at least 3°
apart to allow the Auto Changeover to occur when the appropriate
temperature span has been reached. For example, you may have the
following temperatures programmed at a given time:
Heat Set Temp = 68°F, Cool Set Temp = 78°F
If the room temperature rises above 78°F, then the thermostat will
automatically change to cool mode and turn on the air conditioner.
Likewise, the thermostat will automatically switch to heat mode and
turn on the heat when room temperature falls below 68°F. In between
68°F and 78°F - no system operation will occur.
Auto Recovery
Auto Recovery calculates when to start the HVAC system in order to
reach the programmed set-point at the programmed time. Auto
Recovery can be enabled or disabled in step 4 of the installer
configuration menu.
Auto Recovery will not operate if Permanent Hold or Temporary Hold is
in operation.
The Heat set point can not be set higher than the Cool set point, and the
Cool set point can not be set lower than the Heat set point.
1)
Put Thermostat into
RUN MODE
in either heat or cool.
2)
Select program mode, either 5-2 day or 7 individual days by
pressing key until desired program is selected.
3)
Press key and in the program window will appear the
hour flashing. Use the
or
keys to set the
hour. Note AM or PM.
4)
Press
key
again to change to the minute position.
Use
or keys to change the minute.
5)
Press key again to set to the program COOL set
temperature. Use the
or
keys to set to your
desired temperature setting.
6)
Press key again to set to the program HEAT set
temperature. Use the or
keys to set to your
desired temperature setting.
Program 1 is Complete
7)
Press
key to move to program 2, 3 and 4 and follow
the same steps.
PROG
PROG
DAY
PROG
PROG
PROG
PROG
Programming Temperature Settings
The EWT-3900 Thermostat can be programmed for
weekdays and weekends [5/2] or have a unique program for
each of the 7 days of the week. Each day can have a
maximum of 4 time and temperature settings for heating and
cooling. With the “Auto Recovery” feature enabled, the
thermostat will advance the program based on temperature
difference [
D
t] of the current temperature and the next
desired set point.
The program time can be set in 10-minute increments, and
remains the same for both heat and cool programs.
The program temperature can be set in increments of 1°F
(1°C).
The Heat set point can not be set higher than the Cool set
point, and the Cool set point can not be set lower than the
Heat set point.
HOLD
/RUN
thermostat #
FCC ID:XLXA3900
QC
Pass
1. After initial battery conditioning, charge the battery every 3 months for best operation.
2. If communication is lost follow the syncing instructions.
a. Make sure the Thermostat is in the OFF position.
b. Press and hold the PROG key for 3 seconds until the screen changes to the
Menu screen.
c. Press the PROG key to scroll through the menu until the LCD displays CRES.
d. Use the UP key to select 1. Press the Matching Key on the Receiver and then
press the center button between the UP and DOWN arrows on the Thermostat.
e. Wait for 30 seconds, the Thermostat will force the receiver to link.
f. Test by selecting Fan ON in the thermostat screen. Wait for the radio signal icon
to flash on the screen. The HVAC fan should energize. You may now operate your
system normally.
receiver #
receiver #
thermostat #
FCC ID:XLXA3900
If you have more than one EWT-3900 installed on your system,
be sure to number each receiver with its corresponding
thermostat after removing them from the box.
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