06/05/13
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
•
Ph: 800-526- 0288
Page
51
of
112
GF-115-C
Modulex E8 Controller and BCM
Operations and Maintenance Manual
OMM-0084_0D
T1 and T2 Settings:
The previous steps set the U1 and U2 voltages which will be used to scale
the minimum and maximum set point levels. To set the minimum (T1) and maximum (T2) set
point temperatures which correspond to the U1 and U2 voltage levels, follow instructions below.
Voltage & Set Point Limits: T1 & T2
1. Turn the Rotary Knob clockwise and scroll to
CURVE 11-T1
. This will be the minimum set
point temperature.
2. Press the Program Key. The red LED will light.
3. Enter the desired low set point temperature limit for T1 by turning the Rotary Knob. The
selected T1 value will correspond to U1.
4. With the desired low set point temperature limit displayed, press the Program Key to set
the T1 temperature (low set point limit). The red LED will go off.
5. Finally, turn the Rotary Knob clockwise and scroll to
CURVE 11-T2
. This will be the
maximum set point temperature.
6. Press the Program Key. The red LED will light.
7. Enter the desired high set point temperature limit for T2 by turning the Rotary Knob. The
selected T2 value will correspond to U2.
8. With the desired high set point temperature limit displayed, press the Program Key to set
the T2 temperature (high set point limit). The red LED will go off.
This completes the required steps for setting the low and high limits corresponding to the set
point voltage and temperature functions. Proceed immediately to
paragraph 5.3.4
to set the
CURVE 11-UO
voltage.
5.3.4 Setting the Curve 11-UO Voltage
UO is a voltage level that will turn off the boiler. Therefore, the UO voltage level must be set
below the limit set for the U1 voltage. For example; if U1 is set for 1 Volt, UO should be set to
0.9 Volt (or lower). After setting the low and high set point limits as described in
paragraph
5.3.3
, set the UO voltage per instructions
below.
Setting Curve 11-UO Voltage
1. Turn the Rotary Knob clockwise and scroll to
CURVE 11-UO
.
2. Press the Program Key. The red LED will light.
3. Using the Rotary Knob, adjust the UO voltage to below the voltage set for U1.
4. With UO set to the desired value, press the Program Key to store the setting. The red LED
will go off.
5. This completes all of the required entries for operation in the 0 to 10 Volt Remote Set Point
Mode.
6. To exit the
EXPERT
menu –
INSTALLATION
sub-menu, continue scrolling using the
Rotary Knob until
RETURN
is displayed.
7. Press the Program Key to return to exit the
INSTALLATION
sub-menu.
To view the remote set point temperature, proceed to
paragraph 5.3.5
.
