ONICON Incorporated 727-447-6140
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SYSTEM-20 BTU METER
TABLE OF CONTENTS
1.0 INTRODUCTION
.....................................................................................................................................................................................5
1.1 PURPOSE OF THIS GUIDE
.................................................................................................................................................... 5
1.2 TYPICAL SYSTEM-20 BTU METER ......................................................................................................................................5
1.3 STANDARD FEATURES AND SPECIFICATIONS ........................................................................................................... 5
1.4 ADDITIONAL REQUIRED HARDWARE
.............................................................................................................................6
1.5 WORKING ENVIRONMENT
..................................................................................................................................................6
1.6 WARRANTY & SERIAL NUMBER
........................................................................................................................................7
2.0 UNPACKING ...
..........................................................................................................................................................................................7
2.1 CHECKING THAT YOU HAVE RECEIVED EVERYTHING
........................................................................................... 7
3.0 INSTALLATION ....................................................................................................................................................................................... 8
3.1 SITE SELECTION .........................................................................................................................................................................8
3.2 MECHANICAL INSTALLATION ......................................................................................................................... 9
3.2.1 Mounting the Enclosure ................................................................................................................................. 10
3.2.2 Thermowell Installation .................................................................................................................................. 11
3.2.2.1 Standard Thermowells .............................................................................................. 11
3.2.2.2 Hot Tap Thermowells ................................................................................................ 11
3.2.3 Temperature Sensor Installation ................................................................................................................... 13
3.2.3.1 ONICON STANDARD TEMPERATURE SENSOR INSTALLATION .......................................13
3.3 ELECTRICAL INSTALLATION ..............................................................................................................................................15
3.3.1 Power and Signal Wiring Connections .......................................................................................................... 16
3.3.2 Pulse Input and Output Wiring Connections ............................................................................................... 18
3.3.3 Analog Output and Serial Communication Wiring Connections ............................................................... 18
3.3.4 Temperature Sensor Wiring Connections ..................................................................................................... 19
3.3.5 Temperature Input Wiring Details ................................................................................................................. 20
4.0 SYSTEM-
20 START UP & COMMISSIONING
.......................................................................................................................... 21
4.1 START UP .....................................................................................................................................................................................21
4.1.1 Single and Dual Mode Display Pages ........................................................................................................... 22
4.1.2 Additional Display Pages ................................................................................................................................ 23
4.2 COMMISSIONING
...................................................................................................................................................................24
4.2.1 Commissioning Following Initial Power-up ................................................................................................. 24
4.3 SEALING THE METER
............................................................................................................................................................26
4.3.1 Changing RS485 Settings or Meter Programming After Commissioning ............................................... 27
