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GENERAL INFORMATION
Figure 1-1. Boiler Management System II (BMS)
1.4 BMS II FEATURES
The following paragraphs briefly describe some of the unique features incorporated in the BMS II.
Simplified Installation and Set-Up
The BMS II system operates on single-phase input power ranging from 85 to 265 VAC, 50-60 Hz.
Connections to the boiler plant are accomplished utilizing a 2-wire RS485 network connected in a daisy-
chain configuration. When an EMS or BAS is used with the BMS II, connections are made via the RS232
port terminals. In the event that the EMS or BAS is not equipped with a RS232 port, the BMS II can be
ordered with a RS485 to RS232 Converter which can be easily installed within the wiring compartment of
the BMS II. With the exception of AC power, interlock and setback inputs and relay outputs, BMS II
connections are accomplished using twisted-shielded pair cable.
User-Friendly Control System Interface
The unit incorporates a menu-driven architecture which is comprised of 9 primary menus. The user
interface to these menus is accomplished via the BMS II control panel and a Vacuum Fluorescent Display
(VFD). The display is capable of displaying two lines with 16 characters per line. Virtually all of the control
panel keys are identical to the C-More Control System currently used on AERCO Benchmark Series and
KC1000 Boilers. This commonality will help simplify the time required for system setup of the BMS II.
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