AERCO Modulex E8 Controller (and BCM) For Modulex EXT Boilers - Manual (Page 65)

E8 Controller and BCM for Modulex EXT
Installation, Operation & Maintenance Manual
CHAPTER 6: E8 SETUP & PROGRAMMING
OMM-0093_0A AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 65 of 108
GF-136-C Ph.: 800-526-0288 PRI: 06/24/2013
6.3.3 Setting the Voltage and Set Point Limits for U1/U2 and T1/T2
NOTE
Ensure that all steps in Section 6.3.2 were completed prior to
performing the following steps.
NOTE
When scrolling through sub-menus and functions, enter required
Code 0000 only when prompted to do so. Normally, Code 0000
only needs to be entered once, unless you exit and re-enter
EXPERT menu.
U1 and U2 settings: To set the voltage limits corresponding to the minimum and maximum
allowable set point limits, follow the instructions below.
Voltage & Set Point Limits: U1 & U2
1. Press the Program Key to enter the EXPERT menu – INSTALLATION sub-menu. The
display will show CODE NO. requesting the valid code to be entered.
2. Enter code 0000 (4 zeros) by pressing the Program Key four times. The red LED will
remain lit while the four code digits are entered. A dashed line will appear in the display
following code entry.
3. Next, turn the Rotary Knob clockwise until CURVE 11-U1 is displayed.
4. Press the Program Key. The red LED will light.
5. Enter the desired low voltage limit for U1 by turning the Rotary Knob. The voltage will
increment in 0.10 volt increments.
6. With the desired low voltage limit displayed, press the Program Key to set the U1 voltage.
The red LED will go off.
7. Turn the Rotary Knob clockwise and scroll to CURVE 11-U2.
8. Press the Program Key. The red LED will light.
9. Enter the desired high voltage limit for U2 by turning the Rotary Knob.
10. With the desired high voltage limit displayed, press the Program Key to set the U2 voltage.
The red LED will go off.