Nortec BACnet User Manual

18-24 AWG Shielded,

Twisted Pair

Name: Nortec BACnet
Brand: Nortec
SKU: 1626820
Rating: 5 (1 reviews)

5 (1)

Important: Read and save these instructions. This guide to be left with equipment owner.

BACnet®,

LONWORKS®

Supplemental Installation and Operation Manual

Using BACnet or LonWorks with Nortec Humidifiers. Includes installation, operation maintenance and troubleshooting information.

2574199 –A| 24 October 2013

Thank you for choosing Nortec.

INSTALLATION DATE (MM/DD/YYYY)

MODEL #

SERIAL #

CYLINDER #

Proprietary Notice

This document and the information disclosed herein are proprietary data of Nortec Humidity Ltd. Neither this document nor the information contained herein shall be reproduced, used, or disclosed to others without the written authorization of Nortec Humidity Ltd., except to the extent required for installation or maintenance of recipient’s equipment.

Liability Notice

Nortec does not accept any liability for installations of humidity equipment installed by unqualified personnel or the use of parts/components/equipment that are not authorized or approved by Nortec.

BACnet® is a registered trademark of ASHRAE.

LONWORKS® is a registered trademark of Echelon Corporation.

BACnet & LONWORKS Supplemental Install Manual | 2

Contents

Introduction	2
Requirements	2
NH-EL Wiring Connections	3
BACnet MS/TP	3
BACnet IP	4
Addressing and Communication	8
BACnet Communication Set-up	8
Control Signal Setting	9
Control Mapping	10
Options (Lonworks, BTL Certified
BACnet)	14
Field Retrofit Installation	14
Addressing and Communication	17
Control Signal Setting	17
Controller Set-up	18
BTL Certified BACnet specific :
Changing Unit Addressing	18
Changing Baud Rate (BACnet MSTP Only)	19
BACnet Pics and Bibs	19
LonWorks Variables	19
Troubleshooting	22
APPENDIX A	24
APPENDIX B	26
Warranty	30

CAUTION: Servicing

Disconnect main power before any servicing.

The plumbing and electrical compartments contain high voltage components and wiring. Access should be limited to authorized personnel only.

During and following operation of the humidifier, the steam and components in contact with the steam such as the blower pack, steam lines, steam distributors, and condensate lines can become hot and can burn if touched.

Nortec Humidity Ltd does not accept any liability for installations of humidity equipment installed by unqualified personnel or the use of parts/components/equipment that are not authorized or approved by Nortec Humidity Ltd.

CAUTION: Electrical

All electrical work should be done according to local and national electrical code.

Electrical connection to be performed by a licensed electrician.

CAUTION: Installation

Do not mount Humidifier on hot surfaces.

Do not mount in area where freezing can occur.

Do not mount on vibrating surface.

Do not mount on floor.

Regardless of selecting on/off or modulating control method, Nortec humidifiers must have a closed circuit across its on/off security loop control terminal to operate. Nortec highly recommends the use of a duct high limit humidistat.

Introduction

Nortec Humidifiers equipped with the Integrated Controller (touch screen) can readily connect to BACnet Master Slave Token Passing (BACnet MS/TP) and Internet Protocol (BACnet IP) building management systems (BMS) right out of the box. This document describes how to connect these humidifiers to such a network and defines the parameters that may be monitored. This document also describes the additional options that can be purchased when interfacing with LonWorks or BTL certified BACnet. Contact the factory for more information on other protocols not listed in this manual.

Requirements

All NH-EL humidifiers are capable of Modbus, BACnet MS/TP and BACnet IP connectivity right out of the box and require no additional hardware to interface with these BMS. For Modbus specific details, consult Nortec Modbus Manual 2560599-C.

LonWorks and BTL certified BACnet systems require additional optional hardware – see Options (Lonworks, BTL Certified BACnet) for more details.

Please note: to use the BTL certified BACnet or Lonworks protocols, the jumper J7 must NOT be on. When the jumper J7 is on, the controller will enable the native Modbus protocol available on BMS communication port.

BACnet & LONWORKS Supplemental Install Manual | 2

NH-EL Wiring Connections

Using the correct wiring between the humidifier and the BACnet network is important to ensure reliable communications and reduce the impact of electrical interference.

BACnet MS/TP

For BACnet MSTP networks, the recommended wire type is 18 -24 AWG, shielded twisted pair wire with 120 Ohm characteristic impedance. Ensuring the correct shield terminations is necessary to prevent electrical interference. The wire shield should be terminated at either the humidifier or the BACnet system, but not both. This allows induced current to “drain”; if the shield is terminated at both ends it will function as a conductor and can actually increase electrical interference. To minimize signal loss a wire run should not exceed 2000 feet at 38.4 kbps.

Table 1: BACnet MS/TP Parameters

	Polarity			Address
Signal			Recommended Cable
Type				Node	Device
	A	B
				ID	Instance

Maximum Recommended Distance from NORTEC Humidifier

2300 ft at 9.6 kbps

2000 ft at 38.4 kbps

*Default, may vary for multi-unit orders.

3 | BACnet & LONWORKS Supplemental Install Manual

BACnet IP

For BACnet IP networks, the recommended wire type is standard Category 5 Ethernet Cable (CAT 5) with RJ-45 terminations (Category 5E and category 6 cable are also acceptable). Refer to the BMS supplier for maximum recommended lengths of CAT5 cable.

Table 2: BACnet IP Parameters

	BACnet IP			Address
Signal Type	Transmission		Recommended Cable	Node	Device
		Port
	Mode			ID	Instance

LAN			Category 5	Ethernet
LAN	UDP	47808	Cable (CAT	5 or better)	79*	12*
Standard	UDP	47808	Cable (CAT	5 or better)	79*	12*
Standard			with RJ-45 termination
			with RJ-45 termination

Maximum Recommended Distance from NORTEC Humidifier

Depends on cable manufacturer, refer to BMS Supplier for recommendations

*Default, may vary for multi-unit orders.

Wiring connections are made directly to the integrated controller circuit board. Figure 1: Location of Integrated Controller Board shows the location of the board inside the NH-EL.

Figure 1: Location of Integrated Controller Board

BACnet & LONWORKS Supplemental Install Manual | 4

Figure 2: BACnet MS/TP and IP Connection Location show where the physical connections will be made in order to interface with one of these BMS protocols. For information on Optional protocols, such as Lonworks or BTL certified BACnet, please see Options (Lonworks, BTL certified) for details.

Figure 2: BACnet MS/TP and IP Connection Location

Refer to , Figure 3: BACnet MS/TP Wiring Diagram and Figure 4: BACnet IP Wiring Diagram for instructions on making wiring connections for each respective protocol.

5 | BACnet & LONWORKS Supplemental Install Manual