ONICON System-10 N2 - Manual (Page 5)

11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax (727) 442-5699 • [email protected]
System-10-N2 BTU Meter Installation and Operation Guide 05/14 - 0655-5 / 18322
Page 5
SECTION 1: INTRODUCTION
1.1 PURPOSE OF THIS GUIDE
The purpose of this guide is to provide installation and commissioning procedures and basic
installation and operating instructions for the ONICON System-10-N2 serial interface.
1.2 TYPICAL SYSTEM-10 NETWORK INTERFACE MODULE
ONICON’s System-10 is a true heat (Btu) computer which accepts data from several sensors,
performs a series of computations with that data, and displays and/or transmits the results as an
indication of the amount of heat (Btu’s) being transferred per unit time or as a totalized amount.
It can also be provided with an optional Metasys ® N2 serial interface to communicate data to the
building control network.
1.3 SPECIFICATIONS
METASYS ® N2 NETWORK INTERFACE
N2 RS485
Transceiver: 2-wire, half-duplex
Device address range: 1 – 255 (Default: 017)
Baud rate: 9600
Termination: none
Biasing: none
24 VAC Input
Metasys ® N2 Communications
to Johnson Controls System
Heat Exchanger
Return
Supply
SYSTEM-10
BTU METER
Return Temp
Sensor
Supply Temp
Sensor
ONICON insertion
flow meter
(purchased separately)
SCROLL RESET PROGRAM
BTU X 10,000