CONTENTS
iii
GF-124 – BMS II BOILER MANAGEMENT SYSTEM
Operating & Maintenance Instructions
TABLE OF CONTENTS
CHAPTER 1 -
GENERAL INFORMATION ....................................................................................................... 1-1
1.1 SAFETY PRECAUTIONS & WARNINGS ................................................................................................... 1-1
1.2 INTRODUCTION ........................................................................................................................................... 1-1
1.3 BMS II GENERAL description ....................................................................................................................... 1-1
1.4 BMS II FEATURES ........................................................................................................................................ 1-2
Simplified Installation and Set-Up .................................................................................................................... 1-2
User-Friendly Control System Interface ............................................................................................................ 1-2
Retention of Menu Option Settings ................................................................................................................... 1-3
Application Flexibility....................................................................................................................................... 1-3
Sequential or Parallel Operation ........................................................................................................................ 1-3
Accuracy............................................................................................................................................................ 1-3
Bumpless Transfer ............................................................................................................................................. 1-3
Fault Alarm Surveillance ................................................................................................................................... 1-3
BMS II Programming Via RS232 Port. ............................................................................................................. 1-3
CHAPTER 2 -
INSTALLATION.......................................................................................................................... 2-1
2.1 INTRODUCTION ........................................................................................................................................... 2-1
2.2 SITE SELECTION AND mounting ................................................................................................................ 2-1
Mounting the BMS ............................................................................................................................................ 2-1
2.3 GENERAL WIRING REQUIREMENTS ....................................................................................................... 2-2
2.4 POWER WIRING ........................................................................................................................................... 2-3
2.5 SENSOR INSTALLATION AND WIRING.....................................................
............................................. 2-5
Header Sensor.................................................................................................................................................... 2-5
Return Sensor .................................................................................................................................................... 2-5
Outdoor Air Sensor............................................................................................................................................ 2-6
2.6 RS485 (MODBUS) WIRING AT the BMS II................................................................................................. 2-8
BMS II Bias Switches........................................................................................................................................ 2-8
2.7 RS485 (MODBUS) WIRING AT the aerco boilers ........................................................................................ 2-9
RS485 Wiring for Benchmark Series and KC1000 Boilers............................................................................... 2-9
RS485 Wiring for Modulex Series Boilers...................................................................................................... 2-11
2.8 Sample RS485 (Modbus) Network Diagrams ............................................................................................... 2-12
2.9 RS232 Wiring at the BMS II ......................................................................................................................... 2-14
2.10 INTERLOCK WIRING............................................................................................................................... 2-15
Interlock 1 (INT 1) Wiring .............................................................................................................................. 2-15
Interlock 2 (INT 2) Wiring .............................................................................................................................. 2-15
2.11 SET BACK WIRING .................................................................................................................................. 2-15
2.12 RELAY WIRING ........................................................................................................................................ 2-15
System Start Relay........................................................................................................................................... 2-16
Fault Alarm Relay ........................................................................................................................................... 2-16
Auxiliary Relay................................................................................................................................................ 2-16
2.13 4 – 20 mA WIRING .................................................................................................................................... 2-16
CHAPTER 3 -
OPERATION ................................................................................................................................ 3-1
3.1 INTRODUCTION ........................................................................................................................................... 3-1
3.2 FRONT PANEL OPERATING CONTROLS AND DISPLAYS ................................................................... 3-1
3.3 BMS II MENU STRUCTURE ........................................................................................................................ 3-3
Menu Processing Procedure .............................................................................................................................. 3-3
3.4 operating menu ................................................................................................................................................ 3-5
HEADER TEMP and PERCENT OF LOAD .................................................................................................... 3-5
HEADER SETPOINT ....................................................................................................................................... 3-5
OUTSIDE AIR TEMP....................................................................................................................................... 3-5
I/O STATUS...................................................................................................................................................... 3-6
RETURN TEMP................................................................................................................................................ 3-6
Содержание BOILER MANAGEMENT SYSTEM II 5R5-384
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