Overview; Multi-Unit Systems - Nortec LINKS 2 NHTC Installation And Operation Manual

Overview

The NHTC NORTEC Links 2 Option allows for the integration of a NHTC Series humidifier within a
BACnet, Johnson N2 or LonWorks network and allows those units to concurrently be monitored via
the NORTEC OnLine interface. This option features a NORTEC OnLine module co-existing with a
gateway that has the capability of converting information from the host Modbus protocol to a
specified secondary protocol.
The following protocol options are available, and must be specified at time of order:
Table 1: Protocol Options
Protocol
BACnet MS/TP
BACnet / IP
Johnson N2
LonWorks
The Nortec Links2 package also includes Nortec OnLine. Nortec OnLine is an advanced web
monitoring package that allows authorized users to remotely monitor humidifier status and
performance from anywhere with an internet connection. Nortec OnLine is available with an
optional service that, among other things, includes factory technicians monitoring the units
weekly. Even if the OnLine service is not ordered, the units can still be connected to an viewed
online at www.norteconline.com For information specifically related to Nortec OnLine consult the
accompanying OnLine manual or your local representative.
Multi-Unit Systems ("Master/Slave")
Up to 8 humidifiers can be chained and monitored through a single Links 2 package. In this
configuration, the unit with the Links 2 package is designated the "Master Unit", while the
remaining 7 humidifiers are configured as "Slaves". The master unit is connected to the Building
Management Systems (BMS). Each unit is separately addressed, it is possible to monitor and
control each unit individually.
Different networking configurations may be achieved depending on the type of network being
used. One networking example could have a Gateway installed inside the lead unit, which could
then be daisy-chained to successive units. In turn, the lead unit would connect to a Building
Management System (BMS) network via a shielded, twisted-pair connection. Please see wiring
section for additional detail. A second example could have a series of units directly connected to
an Ethernet network. This is only possible for BACnet communication and is essentially referred to
as a BACnet/IP configuration.
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