06/05/13 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526- 0288 Page 44 of 112
Modulex E8 Controller and BCM
Operations and Maintenance Manual
5.1.3 Viewing the Boiler Setpoint
The setpoint temperature setting is viewed in the E8 controller display as shown below.
Viewing the Boiler Setpoint
1. Turn the Rotary Knob to the DISPLAY menu. The first sub-menu displayed will be
INSTALLATION.
2. Press the Program Key to enter the INSTALLATION sub-menu.
3. Turn Rotary Knob clockwise until T-COLL DES is displayed along with corresponding
temperature reading. This T-COLL DES reading equals the boiler set point.
5.2 Constant Set Point Mode
When a fixed header temperature is desired, configure the the Constant Set Point Mode as
shown in the instructions below.
Constant Setpoint Mode Configuration
1. Set the ON/OFF switch on the front of the Modulex boiler to the ON position.
2. Open the Controller front panel.
3. Turn the Rotary Knob clockwise to the EXPERT menu. The first item (sub-menu) displayed
will be INSTALLATION.
4. Continue turning the Rotary Knob clockwise until HEAT CIRCUIT 1 is displayed.
5. Press the Program Key to enter the HEAT CIRCUIT 1 sub-menu.
6. Scroll to HC FUNCTION. The currently stored setting (00 or 01) will be displayed. Normally,
00 will be displayed since this is the Factory Default. However, for the Constant Set Point
Mode, the HC FUNCTION setting must be changed to 01. If the HC FUNCTION is currently
set to 00, proceed to step 7. However, if it is set to 01, skip to step 11.
7. If the HC FUNCTION is set to 00, press the Program Key. CODE NO. will be displayed
requesting the valid code to be entered.
8. Enter code 0000 (four zeros) by pressing the Program Key four times. The red LED will
remain lit while the digits are entered.
9. With HC FUNCTION again displayed, press the Program Key. The red LED will light. Turn
the Rotary Knob to change the HC FUNCTION to 01.
10. Press the Program Key to store the 01 setting for the HC FUNCTION. Red LED will go off.
RESET will be momentarily displayed, followed by display of the current Controller software
version (e.g. SW 259-04). Following RESET, the Controller display will then switch to the
initial INSTALLATION menu.
11. Use Rotary Knob to scroll to the USER menu and access HTG CIRCUIT 1 sub-menu. Press
Program Key to enter the sub-menu.
12. Using Rotary Knob, scroll to T – FLOW DAY. The currently stored value for T – FLOW DAY
will be displayed. This represents the current Constant Set Point temperature in °F.
13. To change Constant Set Point value, press the Program Key and turn the Rotary Knob to
select the desired Constant Set Point. Press the Program Key again to store the Set Point.
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