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

Modulex EXT Commercial Series
CHAPTER 5: UFLY CONTROLLER & BCM MODULES

5.1.3 Display Modes

6 Display Mode
Screen Off

5.2 BCM (BOILER COMMUNICATION MODULE)

The BCM (Boiler Communication Module) is an electronic module in MODULEX boilers, which
supports full interoperability to BAS (Building Automation Systems) via Modbus protocol to make
remote communications and control possible. In addition, it provides customers with a remote
alarm contact to notify customers of faults detected within any of the boiler's multiple thermal
modules. Finally, in the event the boiler's master controller stops working, the BCM also takes
over operations of the boiler.
The BCM enhances the range of control functions offered by the Modulex Boilers. These
additional control functions include the following:
• A fault relay which energizes when any fault condition occurs.
• BCM serves as a Back-up Controller in the event that 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 and control a variable speed primary pump via 0-10V
analog signal.
Additional BCM information is in Sections 6 and 7 and in Controls Manual OMM-0159.
OMM-0160_A • DRAFT
7 Display Mode
Home Screen
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
8 Display Mode
Menu Screen
Page 69 of 117