Boiler Communication Module (Bcm) - Watts AERCO EXT Installation, Operation & Maintenance Manual

Ufly Controller and BCM for Modulex EXT
CHAPTER 2: Ufly CONTROLLER & BCM MODULES

2.2 Boiler Communication Module (BCM)

The MODULEX BCM supports full interoperability to BAS (Building Automation Systems) via
Modbus protocol to enable remote communications and control. It also provides a remote alarm
contact to notify customers of faults within any of the thermal modules. Finally, in the event the
boiler's master controller stops working, the BCM also takes over operation of the boiler.
Additional control functions include the following:
• A fault relay which energizes when any fault condition occurs.
• BCM serves as a Back-up Controller if the primary Ufly Controller fails.
• BCM provides a 0-10V output for controlling a VFD primary pump.
• BCM can function as a "Client" to a "Manager" Energy Management System (EMS), Building
Automation System (BAS) or AERCO Control System (ACS) on a Modbus Network.
• BCM can start/stop the primary pump; BCM can also control a variable speed primary pump
via 0-10V analog signal.
The BCM is installed on the front of the Modulex Boiler, behind the lift-up front panel. Additional
information for the BCM can be found in Chapters 6, 7, and 8.
Figure 2-1: Boiler Communications Module (BCM)
OMM-0159_A_A • 6/28/2022 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
Page 10 of 83