Unical MODULEX EXT 100, Installation And Servicing Instructions

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Instructions for the installer
ALTERNATE CONNECTION IN BATTERY 2 MODULEX operated by BCM (RING PRIMARY)
3.24 - CASCADE MANAGER (BCM)
Application:
The BCM completes the range of functions offered by the Modulex
boilers:
- ON/OFF alarm control
- Control of a modulating primary pump with the aim of significantly
increasing efficiency at low heating loads.
- Possibility of integrating the Modulex boilers in PLC controlled boiler
plants
- Thanks to LonWorks/Modbus protocol converters been readily avai-
lable also opens the road to installing Modulex boilers in the most
advanced Building Automation Systems.
Features:
The BCM can be connected to the automation system of a boiler plant
via one of its interfaces:
- eBUS: for connection to the series of E8 heating controllers or to an
additional BCM
- Modbus: application in PLC controlled boiler plants
The communication protocols enable complete system management:
- Control of heating request: temperature set point and modulation level
- Monitoring of boiler operation and temperature status
- Alarm control
- Functional parameters setting
Management of the header pump:
- Relay command for running a pump at fixed rate
- 0÷10 analogical output for control of a modulating pump
Special functions
Emergency: it avoids system shutdown caused by an interruption in
communication with the boiler plant’s automation system:
- Input for “Constant setpoint” request: 70°C, maximum output 50%
- Alarm reset input
- Alarm relay signal