Staging/Modulating Jumper - Electro Industries EB-MX-10 Installation & Operating Instructions Manual

Staging/Modulating Jumper

The control board on the Midsize Series boiler is a universal controller with the capability of interfacing
with many different models of TS Electro boilers.
The correct setting of this jumper is determined on the model of the boiler you are
working with.
If you're working with an EB-MX-**, this should be set to "MODULATE".
If you're working with an EB-MS-**, this should be set to "STAGING".
Circulator pump mode – as factory set, the circulator pump is controlled directly from the "W" input
terminal. In this setup the circulator pump continues during load control interrupt (or optional remote
standby switch). There is a provision within the controller board (inside) to allow the circulator pump to
not operate during load control interrupt.
On the inside control board, just above the two
bottom terminal blocks, is a small pin jumper
arrangement. The black "device" sets up the pump
mode. Just below this pin jumper arrangement are
W and L lettering. When the two pin shorting
device is in the W position, the pump is a direct
function of R to W input. When the two pin jumper
is in the L position, the pump is interrupted during a
load control.
WARNING
THIS SHORTING DEVICE MUST BE IN ONE OF THE TWO POSITIONS FOR THE CIRCULATOR
PUMP TO PROPERLY OPERATE.
10/27/2016
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BI516