NHTC NORTEC LINKS 2 OPTIONS
Installation Manual
Manual No. H-502 2008-02-18
PROPRIETARY NOTICE
This document and the information disclosed herein are proprietary data of WALTER MEIER LTD. Neither this document nor the information contained herein shall be reproduced used, or disclosed to others without the written authorization of WALTER MEIER LTD., except to the extent required for installation or maintenance of recipient’s equipment. All references to the NORTEC name should be taken as referring to WALTER MEIER LTD.
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.
COPYRIGHT NOTICE
Copyright 2008, WALTER MEIER LTD. All rights reserved.
RECORD OF REVISIONS
For each revision, put the revised pages in your manual and discard the superseded pages. Write the revision number and revision date, date put in manual, and the incorporator’s initials in the applicable columns on the Record of Revisions.
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2008-02-18
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TABLE OF CONTENTS |
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Subject |
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Page |
10-00 INTRODUCTION |
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1. |
OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . 2 |
10-10 INSTALLATION PROCEDURES |
|
|
1. |
NETWORKING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . 2 |
2. |
WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . 3 |
A. |
BACNET/MSTP, JOHNSON N2, AND LONWORKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . 3 |
B. |
BACNET/IP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . 3 |
3. |
GATEWAY CONFIGURATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . 4 |
4. |
NETWORK INTEGRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . 4 |
A. |
LONWORKS.XIF FILE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . 4 |
B. |
BACNET PICS AND BIBS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . 4 |
5. |
VARIABLE DEFINITION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . 5 |
10-20 START-UP
1. NORTEC LINKS 2 START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2. START-UP PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
10-30 TROUBLESHOOTING
1. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2. INDICATOR LIGHTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
10-40 SPARE PARTS
1. REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
10-50 TECHNICAL
1. WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
WARRANTY
2008-02-18
|
LIST OF FIGURES |
Figure |
Page |
10-10 INSTALLATION
Figure 1. Sample Humidification Applications - Room-Sensed %RH Feedback with Duct Hi-Limit Sensing .16 Figure 2. Sample Humidification Applications - Control Feedback (0-100%) with Duct Hi-Limit Sensing . . . .16 Figure 3. Sample Humidification Applications - 0-10V Signal Directly to Humidifier) . . . . . . . . . . . . . . . . . . .17
10-30 TROUBLESHOOTING
Figure 1. OnLine Diagnostic LED Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Figure 2. BACnet Module LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Figure 3. LonWorks Module LED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Figure 4. Ethernet Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
10-40 SPARE PARTS
Figure 1. BACnet or N2 Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Figure 2. LonWorks Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Figure 3. OnLine Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Figure 4. Ethernet Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Figure 5. Ethernet Swithch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
10-50 TECHNICAL
Figure 1. Wiring Diagram - NHTC LINKS II BACnet/IP Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Figure 2. Wiring Diagram - NHTC LINKS II LonWorks Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Figure 3. Wiring Diagram - NHTC LINKS II Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
|
LIST OF TABLES |
|
Table |
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Page |
10-00 INTRODUCTION |
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|
Table 1. |
Protocol Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . .2 |
10-10 INSTALLATION |
|
|
Table 1. |
Recommended Wire Types and Lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . .3 |
Table 2. |
Baud Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. .4 |
Table 3. |
Variable Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. .6 |
Table 4. |
Variable Addresses Unit #1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. .8 |
Table 5. |
Variable Addresses Unit #2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. .9 |
Table 6. |
Variable Addresses Unit #3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
.10 |
Table 7. |
Variable Addresses Unit #4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
.11 |
Table 8. |
Variable Addresses Unit #5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
.12 |
Table 9. |
Variable Addresses Unit #6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
.13 |
Table 10. |
Variable Addresses Unit #7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
.14 |
Table 11. |
Variable Addresses Unit #8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
.15 |
10-30 TROUBLESHOOTING
Table 1. OnLine Diagnostic LED Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Table 2. LINKS 2 Module Diagnostic LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Table 3. Troubleshooting Communication Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
10-40 SPARE PARTS
Table 1. Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2008-02-18
THIS PAGE INTENTIONALLY LEFT BLANK
2008-02-18
10-00 INTRODUCTION
10-00
Page 1 2008-02-18
(1)OVERVIEW
(1)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.
(2)The following protocol options are available and must be specified when ordering:
Table 1. |
Protocol Options |
|
Protocol |
|
Default Baud Rates |
BACnet MS/TP |
|
38.4 kbps |
BACnet / IP |
|
10BaseT |
Johnson N2 |
|
9.6 kbps |
|
|
|
10-00
Page 2 2008-02-18
10-10 INSTALLATION
10-10
Page 1 2008-02-18
(1)NETWORKING
(1)It is possible to network up to a maximum of 8 units to a single LINKS 2. Since each unit is separately addressed, it is possible to monitor and control each unit individually. Different networking configurations may be achieved and are mostly dependant on the type of network present at the site. 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.
10-10
Page 2 2008-02-18
(2)WIRING
(A)BACNET/MSTP, JOHNSON N2, AND LONWORKS
(1)The necessary internal wiring for the Gateway is already present except for the BMS network connection that can be made via twisted-pair at terminals A and B. To network multiple units to a single Gateway, the units may be daisy-chained to each other using the network link terminals at the TB3 connection jack on the humidifier logic board. Refer to wiring diagram in section 10-50.
(1)Table #1 refers to the recommended wire types and maximum recommended lengths from the Nortec LINK 2 module to the front-end of the Building Management system. Since communication between the humidifiers and Nortec Links will always occur via a EIA-485 signal type, Nortec recommends using a 18-24 AWG shielded, twisted pair wire between the lead humidifier and each of the slave humidifiers. Cable runs between the Nortec LINKS 2 module and the furthest slave humidifier should not exceed 2,000 feet. Signal boosters or repeaters may be necessary for longer wire runs or where electrical noise interference is prevalent.
Table 1. Recommended Wire Types and Lengths
|
Signal |
Polarity |
Recommended |
Maximum |
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Protocol |
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Recommended |
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Type |
A |
B |
Cable |
Distance from Nortec |
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Module |
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BACnet |
EIA-485, |
Net + |
Net - |
18-24 AWG |
2300 ft at 9.600 kbps |
|
MS/TP |
Shielded, Twisted |
|||||
2-wire |
2000 ft at 38,400 kbps |
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Johnson N2 |
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Pair |
|||
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BACnet/IP |
LAN |
N/A |
N/A |
CAT.5E cable with |
Depends on cable |
|
standard |
RJ-45 termination |
manufacturer |
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LonWorks |
EIA-232, |
Tx |
Rx |
18-24 AWG |
Should not exceed 50 ft. |
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2-wire |
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Twisted Pair |
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(B)BACNET/IP
(1)The necessary wiring for the Gateway is present except for the network cable, which must be connected to the RJ-45 (Ethernet) jack on the Gateway. Refer to wiring diagram in section 10-50.
10-10
Page 3 2008-02-18
(3) GATEWAY CONFIGURATION
(1)Protocol configuration is made at the factory, prior to final testing. Baud rates are also adjusted to the following values:
Table 2. Baud Rates
Protocol |
Default Baud Rates |
BACnet MS/TP |
38.4 kbps |
|
|
BACnet / IP |
10BaseT |
Johnson N2 |
9.6 kbps |
(2)For BACnet/IP, BACnet/MSTP and Johnson N2 applications, it is necessary to establish the modules network address parameters in order access it. Address assignments can be configured at the factory or Nortec can provide instructions to modify the address settings in the field.
(4)NETWORK INTEGRATION
(A)LONWORKS.XIF FILE
(1)To facilitate the integration of a LonWorks unit within a network, it may be desirable to obtain an External Interface File (XIF). Files of type .xif are used to convey the resources, specific objects and data types which a LonWorks device possesses. The
.xif file allows a network integrator to simulate the presence of a networked humidifier even if it is not yet physically connected to the network. In fact, if the integrator has the .xif files of all network devices, a complete system could be simulated and configured off-line. Once the configuration is done, the integrator's software tool can be connected to the actual system and the configuration information can be downloaded. If a .xif file is required prior to installing a LonWorks-enabled humidifier, please contact the factory to obtain it.
(B)BACNET PICS AND BIBS
(1)The Protocol Implementation Conformance Statement or “PICS” describes the BACnet capabilities of a particular BACnet implementation. It is a written document, created by the manufacturer of a device, which identifies the particular options specified by BACnet that are implemented in the device.
(2)BACnet Interoperability Building Blocks (BIBBs) describe a list of services a BACnet device provides. The main areas that the building blocks are concerned with include: data sharing, trends, schedules, device and system management. BIBBs help specify the interoperability capabilities of a BACnet device. Please contact the factory to obtain a PICS statement or BIBBs profile.
10-10
Page 4 2008-02-18
(5) VARIABLE DEFINITION
IMPORTANT:
In the variable name, “_x” denotes the humidifier number. If there is only one GSTC humidifier, all variable names will end in “_1”. If two units are networked together (see Figure 4), the second unit’s variable names will end in “_2”. For 3 networked units, “_3” and so on. If unsure of the unit number, each unit will have a label indicating the device instance of each humidifier. If unsure of the unit number, each unit will have a label, in the electrical compartment close to the terminal strip, indicating the device instance of each humidifier.
(1)Nortec LINKS 2 monitors a variety of variables for each unit that is connected to it. For a variable listing and definition refer to Table 3. Network variable addresses for the humidifiers may be seen in Table 4 to Table 11.
10-10
Page 5 2008-02-18
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Table 3. |
Variable Definitions |
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|
Variable Name |
R=Read |
Description |
LonWorks SNVT |
|
|
W=Write |
|
|
|
nvoHourOpt_x |
R |
Indicates the number of hours the |
SNVT_count_inc |
|
humidifier cylinder has been in |
||||
|
Analogue Value |
operation. |
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|
|
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|
|
|
Reads to capacity limitation |
|
|
nvoCapLimit |
R |
applied to the unit output. |
SNVT_switch |
|
|
Analogue Value |
(50-100%) |
|
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||
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nvoRHDem1_x |
R |
Reads Ch.1 input signal in %RH |
SNVT_switch |
|
or demand to humidifier. |
||||
|
Analogue Value |
(0-100%) |
|
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|
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nvoSet1_x |
R |
Reads Ch.1 setpoint setting. |
SNVT_switch |
|
|
Analogue Value |
(10-90%) |
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|
|
|
Reads Ch.2 input signal in %RH |
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|
|
|
or demand to humidifier. |
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|
nvoRHDem2_x |
R |
(0-100%) |
SNVT_switch |
|
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Analogue Value |
Unit must be configured for dual |
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||
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channel operation. |
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Reads Ch.2 setpoint setting. |
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nvoSet2_x |
R |
(10-90%) |
SNVT_switch |
|
Unit must be configured for dual |
||||
|
Analogue Value |
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||
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|
channel operation. |
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nvoSysDemand_x |
R |
Reads humidifier system |
SNVT_switch |
|
|
Analogue Value |
demand. (0-100%) |
|
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nviCapLimit |
R |
Sets the humidifier’s unit |
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|
Analogue Value |
capacity. (50-100%) |
|
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|
Writes Ch.1 demand or %RH |
|
|
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|
level. Allows BMS control of |
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nviRHDem1_x |
W |
humidifier output. (0-100%) |
SNVT_switch |
|
|
Analogue Value |
Unit must be configured for |
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networked demand |
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Writes Ch.2 demand or %RH |
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level. Allows BMS control of |
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|
nviRHDem2_x |
W |
humidifier output. (0-100%) |
SNVT_switch |
|
|
Analogue Value |
Unit must be configured for |
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||
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networked demand |
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nviSet1_x |
W |
Writes Ch.1 setpoint (0-90%) |
SNVT_switch |
|
|
Analogue Value |
|
|
|
nviSet2_x |
W |
Writes Ch.2 setpoint (0-90%) |
SNVT_switch |
|
|
Analogue Value |
|
|
10-10
Page 6 2008-02-18
Variable Name |
R=Read |
Description |
LonWorks SNVT |
|
W=Write |
||||
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|
|
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nvoFault_x |
R |
Indicates unit fault status. |
SNVT_switch |
|
0=no fault, 1=fault. |
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Binary Value |
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Indicates if a high-water level |
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nvoHWSensor_x |
R |
condition exists in the humidifier |
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Binary Value |
cylinder. |
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0=normal, 1=high water condition |
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Reads configuration status for |
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network-enabled sensing or |
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control. |
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nvoNetSensor_x |
R |
0=%RH or %demand input is not |
SNVT_switch |
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|
Binary Value |
from the network |
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|
1=%RH or %demand input is from |
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the network |
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nvoDisable_x |
R |
Reads remote disable status. |
SNVT_switch |
|
0=humidifier enabled, |
||||
|
Binary Value |
1=humidifier disabled by network |
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R |
Indicates security loop status. |
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nvoSecurity_x |
0=Sec. loop open, |
SNVT_switch |
||
|
Binary |
1=Sec. loop closed |
|
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||
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R |
Reads service requirement status. |
|
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nvoService_x |
0=no service required, |
SNVT_switch |
||
|
Binary Value |
1=service required |
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||
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nvoStatus_x |
R |
Reads humidifier status. |
SNVT_switch |
|
|
Binary Value |
0=standby, 1=humidifying. |
|
|
|
|
|
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|
R |
Indicates that the Nortec Links |
|
|
nvoConnection_x |
module is communicating with the |
SNVT_switch |
||
|
Binary Value |
Humidifier |
|
|
|
|
|
|
|
|
|
Writes remote disable status. |
|
|
nviDisable_x |
W |
0=humidifier enabled, |
SNVT_switch |
|
|
Binary Value |
1=humidifier disabled from |
|
|
|
|
network |
|
|
|
|
|
|
|
|
|
Writes configuration status for |
|
|
|
|
network-enabled sensing or |
|
|
|
W |
control. |
|
|
nviNetSensor _x |
0=%RH or %demand input is not |
SNVT_switch |
||
|
Binary Value |
from the network |
|
|
|
|
1=%RH or %demand input is from |
|
|
|
|
the network |
|
|
|
|
|
|
10-10
Page 7 2008-02-18
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