06/05/13 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526- 0288 Page 47 of 112
Modulex E8 Controller and BCM
Operations and Maintenance Manual
5.2.4.2 Configuring MAX T-FLOW and MIN T-FLOW Parameters
To enter the MAX T-FLOW and MIN T-FLOW values, see instructions below.
Configuring MAX T-FLOW and MIN T-FLOW Parameters
1. Ensure ON/OFF switch on front of Modulex boiler is in the ON position.
2. Open controller front panel.
3. Turn the Rotary Knob clockwise to the EXPERT menu. The first item (sub-menu) displayed
will be INSTALLATION.
4. Continue scrolling clockwise through the EXPERT menu until the HTG CIRCUIT 1 sub-
menu is displayed.
5. With HTG CIRCUIT 1 displayed, press the Program key to enter the sub-menu.
6. Use Rotary Knob to scroll to MAX T-FLOW sub-menu. The display will show “MAX T-
FLOW” and the current value stored in memory (68 to 230).
7. To change MAX T-FLOW value, press the Program Key 6 times to sequence through the 4
digits and back to the current value for MAX T-FLOW.
8. Press the Program Key one more time. The red LED will light.
9. Rotate the Rotary Knob until the desired value for MAX T-FLOW is displayed.
10. Press the Program Key once. The new value for MAX T-FLOW will flash indicating it was
entered.
11. Turn the Rotary Knob to the next parameter displayed, MIN T-FLOW.
12. Press the Program Key once. The red LED will light.
13. Now turn Rotary Knob until desired MIN T-FLOW (50 – 230) value is displayed.
14. Press the Program Key once. The new value for MIN T-FLOW will flash indicating it was
entered.
Continue scrolling through the HTG CIRCUIT 1 sub-menu until RETURN is displayed. Press
the Program Key to exit the HTG CIRCUIT 1 sub-menu.
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