Bcm Fault Relay; Bcm Fault Relay Wiring; Clearing Faults - Watts AERCO EXT Installation, Operation & Maintenance Manual

Ufly Controller and BCM for Modulex EXT
CHAPTER 6: BOILER COMMUNICATIONS MODULE (BCM)

6.2 BCM Fault Relay

The BCM Fault Relay is activated (energized) when a fault condition occurs in the Modulex Boiler.
When activated, the Fault Relay provides contact closure across pins 3 and 4 of connector Y4 in
the Input/Output box. In addition, the red LED on the BCM board will light continuously.

6.2.1 BCM Fault Relay Wiring

If desired, pins 3 and 4 of connector Y4 (Figure 6-4) can be wired to an external source to provide
a remote alarm indication when the BCM Fault Relay is activated.

6.2.2 Clearing Faults

A fault can be cleared by pressing and releasing the black Reset Button on the front cover of the
BCM (see Figure 6-2) or tapping on the reset icon on the Ufly Controller However, if the cause of
the fault has not been corrected, the Fault Relay will again be activated.
Figure 6-3: Input/Output box location
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