Maritime Geothermal EM (DX) 45-55-65, Руководство по установке

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Maritime Geothermal Ltd. 17-Feb-00
The Ranco® ETC is a microproc-
essor-based electronic temperature
control designed to handle the
OFF/ON functions of the NOR-
DIC® EMDX unit. The ETC is
equipped with an LCD display
which provides a constant readout
of the sensed temperature and a
touch keypad that allows the user
to easily and accurately select the
setpoint temperatures and differen-
tials for the first and second stages
of operation.
Programming Steps and Dis-
play
Step 1– To start programming, press the SET key
once to access the Fahrenheit/Celsius mode. The
display will show the current status, either F for de-
grees Fahrenheit or C for degrees Celsius. Then
press either the
UP arrow or DOWN arrow key to
toggle between the F° or C° des-
ignation. For closer regulation of
your PC temperatures we recom-
mend you program in the Fahr-
enheit mode.
STAGE 1
Step 2– Press the SET key again
to access the stage1 setpoint.
The LCD will display the current
setpoint and the S1 annunciator
will be blinking on and off to in-
dicate that the control is in the
setpoint mode. Then press either
the
UP arrow key to increase or
the DOWN arrow key to de-
crease the setpoint to the desired
temperature.
Step 3– Press the
SET key again
to access the stage1 differential. The LCD will dis-
play the current differential and the
Dif 1 annuncia-
tor will be blinking on and off to indicate that the
control is in the differential mode. Then press ei-
ther the
UP arrow key to increase or the DOWN
arrow key to decrease the differential to the desired
setting.
Step4– Press the
SET key again to access the
stage1 cooling or heating mode.
The LCD will display the current
mode, either
C1 for cooling or H1
for heating. Then press the UP or
DOWN key to toggle between the
C1 or H1 designation.
(NOTE: For purposes both
stages of both aquastat are set to
the H1 or H2 designation. )
STAGE 2
Step 5– Press the SET key again to
access the stage 2 setpoint. The
LCD will display the current set-
point and the
S2 annunciator will
be blinking on and off to indicate the control is in
the setpoint mode. Then press either the
UP key to
increase or the DOWN key to decrease the setpoint
to the desired temperature.
Step 6– Press the
SET key again to access the
stage2 differential . The LCD will display the cur-
rent differential and the DIF 2 an-
nunciator will be blinking on and
off to indicate that the control is in
the differential mode. Then press
either the
UP arrow key to increase
or the DOWN arrow key to de-
crease the differential to the desired
setting.
Step 7– Press the
SET key again to
access the stage 2 cooling or heat-
ing mode. The LCD will display
the current mode, either
C2 for
cooling or H2 for heating. Then
press either the up or down key to
toggle between the
C2 and H2 des-
ignation. Press the SET key once
more and programming is com-
plete.
NOTE: The ETC will automatically end program-
ming if no keys are depressed for a period of 30
seconds. Any settings that have been input to the
control will be accepted at that point.
All control settings are retained in non-volatile
memory if power to ETC is interrupted for any rea-
son. Re-programming is not necessary after power
outages or disconnects unless different control set-
Ranco® ETC Thermostat Controls
ETC Location
EMDX
Electrical Box