NHTC NORTEC
LINKS 2 OPTIONS
Installation Manual
Manual No. H-502
2008-02-18
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TABLE OF CONTENTS
Subject
Page
10-00 INTRODUCTION
1.
OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
10-10 INSTALLATION PROCEDURES
1.
2.
NETWORKING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
BACNET/MSTP, JOHNSON N2, AND LONWORKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
BACNET/IP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
GATEWAY CONFIGURATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
NETWORK INTEGRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
LONWORKS.XIF FILE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
BACNET PICS AND BIBS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
VARIABLE DEFINITION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
A.
B.
3.
4.
A.
B.
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
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LIST OF FIGURES
Figure
Page
10-10 INSTALLATION
Figure 1.
Figure 2.
Figure 3.
Sample Humidification Applications - Room-Sensed %RH Feedback with Duct Hi-Limit Sensing .16
Sample Humidification Applications - Control Feedback (0-100%) with Duct Hi-Limit Sensing . . . .16
Sample Humidification Applications - 0-10V Signal Directly to Humidifier) . . . . . . . . . . . . . . . . . . .17
10-30 TROUBLESHOOTING
Figure 1.
Figure 2.
Figure 3.
Figure 4.
OnLine Diagnostic LED Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
BACnet Module LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
LonWorks Module LED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Ethernet Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
10-40 SPARE PARTS
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
BACnet or N2 Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
LonWorks Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
OnLine Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Ethernet Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Ethernet Swithch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
10-50 TECHNICAL
Figure 1.
Figure 2.
Figure 3.
Wiring Diagram - NHTC LINKS II BACnet/IP Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Wiring Diagram - NHTC LINKS II LonWorks Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Wiring Diagram - NHTC LINKS II Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
LIST OF TABLES
Table
Page
10-00 INTRODUCTION
Table 1.
Protocol Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
10-10 INSTALLATION
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Recommended Wire Types and Lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Baud Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Variable Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Variable Addresses Unit #1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Variable Addresses Unit #2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Variable Addresses Unit #3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Variable Addresses Unit #4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Variable Addresses Unit #5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Variable Addresses Unit #6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Variable Addresses Unit #7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Variable Addresses Unit #8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
10-30 TROUBLESHOOTING
Table 1.
Table 2.
Table 3.
OnLine Diagnostic LED Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
LINKS 2 Module Diagnostic LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Troubleshooting Communication Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
10-40 SPARE PARTS
Table 1.
Replacement Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
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10-00
INTRODUCTION
10-00
Page 1
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(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
BACnet MS/TP
BACnet / IP
Johnson N2
Default Baud Rates
38.4 kbps
10BaseT
9.6 kbps
10-00
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10-10
INSTALLATION
10-10
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(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
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(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
Polarity
Maximum
Recommended
Distance from Nortec
Module
Signal
Type
Recommended
Cable
Protocol
A
B
BACnet
MS/TP
Johnson N2
18-24 AWG
Shielded, Twisted
Pair
EIA-485,
2-wire
2300 ft at 9.600 kbps
2000 ft at 38,400 kbps
Net + Net -
LAN
CAT.5E cable with
RJ-45 termination
18-24 AWG
Depends on cable
manufacturer
Should not exceed 50 ft.
BACnet/IP
LonWorks
N/A
Tx
N/A
Rx
standard
EIA-232,
2-wire
Twisted Pair
(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
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(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
BACnet MS/TP
BACnet / IP
Johnson N2
Default Baud Rates
38.4 kbps
10BaseT
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
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(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
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Table 3. Variable Definitions
R=Read
W=Write
Description
LonWorks SNVT
Variable Name
Indicates the number of hours the
humidifier cylinder has been in
operation.
R
nvoHourOpt_x
SNVT_count_inc
Analogue Value
Reads to capacity limitation
applied to the unit output.
R
nvoCapLimit
SNVT_switch
Analogue Value
(50-100%)
Reads Ch.1 input signal in %RH
or demand to humidifier.
(0-100%)
R
nvoRHDem1_x
SNVT_switch
SNVT_switch
Analogue Value
Reads Ch.1 setpoint setting.
(10-90%)
R
nvoSet1_x
Analogue Value
Reads Ch.2 input signal in %RH
or demand to humidifier.
(0-100%)
R
nvoRHDem2_x
SNVT_switch
Analogue Value
Unit must be configured for dual
channel operation.
Reads Ch.2 setpoint setting.
(10-90%)
R
nvoSet2_x
SNVT_switch
SNVT_switch
Analogue Value
Unit must be configured for dual
channel operation.
Reads humidifier system
demand. (0-100%)
R
nvoSysDemand_x
Analogue Value
Sets the humidifier’s unit
capacity. (50-100%)
R
nviCapLimit
Analogue Value
Writes Ch.1 demand or %RH
level. Allows BMS control of
humidifier output. (0-100%)
W
nviRHDem1_x
SNVT_switch
SNVT_switch
Analogue Value
Unit must be configured for
networked demand
Writes Ch.2 demand or %RH
level. Allows BMS control of
humidifier output. (0-100%)
W
nviRHDem2_x
Analogue Value
Unit must be configured for
networked demand
W
nviSet1_x
Writes Ch.1 setpoint (0-90%)
Writes Ch.2 setpoint (0-90%)
SNVT_switch
SNVT_switch
Analogue Value
W
nviSet2_x
Analogue Value
10-10
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R=Read
W=Write
Variable Name
Description
LonWorks SNVT
Indicates unit fault status.
0=no fault, 1=fault.
R
nvoFault_x
SNVT_switch
Binary Value
Indicates if a high-water level
condition exists in the humidifier
cylinder.
R
nvoHWSensor_x
Binary Value
0=normal, 1=high water condition
Reads configuration status for
network-enabled sensing or
control.
R
0=%RH or %demand input is not
from the network
nvoNetSensor_x
SNVT_switch
Binary Value
1=%RH or %demand input is from
the network
Reads remote disable status.
0=humidifier enabled,
1=humidifier disabled by network
R
nvoDisable_x
SNVT_switch
SNVT_switch
Binary Value
Indicates security loop status.
R
Binary
nvoSecurity_x
0=Sec. loop open,
1=Sec. loop closed
Reads service requirement status.
R
nvoService_x
SNVT_switch
0=no service required,
1=service required
Binary Value
Reads humidifier status.
0=standby, 1=humidifying.
R
nvoStatus_x
SNVT_switch
SNVT_switch
Binary Value
Indicates that the Nortec Links
module is communicating with the
Humidifier
R
nvoConnection_x
Binary Value
Writes remote disable status.
0=humidifier enabled,
1=humidifier disabled from
network
W
nviDisable_x
SNVT_switch
SNVT_switch
Binary Value
Writes configuration status for
network-enabled sensing or
control.
0=%RH or %demand input is not
from the network
W
nviNetSensor _x
Binary Value
1=%RH or %demand input is from
the network
10-10
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Table 4. Humidifier Variable Addresses
Unit #1
NHTC LINKS 2 Variable Listing
Default BACnet/IP Address: 192.168.10.11; Subnet: 255.255.255.0
Default BACnet/MSTP Address: 78
Default Johnson N2 Address: 174
Unit #1
BACnet
Lonworks
N2
Variable Name
nvoHourOpt_1
nvoCapLimit_1
nvoRHDem1_1
nvoSet1_1
nvoRHDem2_1
nvoSet2_1
nvoSysDemand_1
nviCapLimit_1
nviSet1_1
Type Instance
SNVT
SNVT # NV Index
Type
AI
AI
AI
AI
AI
AI
AI
AO
AO
AO
AO
AO
AO
AO
AO
Instance
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
time_hour
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
switch
124
81
81
81
81
81
81
81
81
81
81
81
95
N/A
N/A
1
2
3
4
5
6
7
8
9
10
11
12
20
N/A
N/A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
nviSet2_1
nviRHDem1_1
nviRHDem2_1
nviDisable_1
Expansion_1
Expansion_1
N/A
N/A
nvoFault_1
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
switch
switch
switch
switch
switch
switch
switch
N/A
switch
switch
N/A
N/A
N/A
95
95
95
95
95
95
95
N/A
95
95
N/A
N/A
N/A
N/A
N/A
13
14
15
16
17
18
19
N/A
21
22
N/A
N/A
N/A
N/A
N/A
Binary In
Binary In
Binary In
Binary In
Binary In
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
nvoHWSensor_1
nvoNetSensor
nvoDisable_1
nvoSecurity_1
nvoService_1
nvoStatus_1
Expansion_1
nviNetSensor_1
nvoConnection_1
Expansion_1
Expansion_1
Expansion_1
Expansion_1
Expansion_1
Binary In
Binary In
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
N/A
N/A
10-10
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Table 5. Humidifier Variable Addresses
Unit #2
Unit #2
BACnet
Lonworks
N2
Variable Name
nvoHourOpt_2
nvoCapLimit_2
nvoRHDem1_2
nvoSet1_2
nvoRHDem1_2
nvoSet2_2
nvoSysDemand_2
nviCapLimit_2
nviSet1_2
Type Instance
SNVT
SNVT # NV Index
Type
AI
AI
AI
AI
AI
AI
AI
AO
AO
AO
AO
AO
AO
AO
AO
Instance
16
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
time_hour
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
switch
124
81
81
81
81
81
81
81
81
81
81
81
95
N/A
N/A
23
24
25
26
27
28
29
30
31
32
33
34
42
N/A
N/A
17
18
19
20
21
22
23
24
25
26
27
28
29
30
nviSet2_2
nviRHDem1_2
nviRHDem2_2
nviDisable_1
Expansion_2
Expansion_2
N/A
N/A
nvoFault_2
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
switch
switch
switch
switch
switch
switch
switch
N/A
switch
switch
N/A
N/A
N/A
95
95
95
95
95
95
95
N/A
95
95
N/A
N/A
N/A
N/A
N/A
35
36
37
38
39
40
41
N/A
43
44
N/A
N/A
N/A
N/A
N/A
Binary In
Binary In
Binary In
Binary In
Binary In
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
nvoHWSensor_2
nvoNetSensor_2
nvoDisable_2
nvoSecurity_2
nvoService_2
nvoStatus_2
Expansion_2
nviNetSensor_2
nvoConnection_2
Expansion_2
Expansion_2
Expansion_2
Expansion_2
Expansion_2
Binary In
Binary In
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
N/A
N/A
10-10
Page 9
2008-02-18
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Table 6. Humidifier Variable Addresses
Unit #3
Unit #3
BACnet
Lonworks
SNVT # Element
N2
Variable Name
nvoHourOpt_3
nvoCapLimit_3
nvoRHDem1_3
nvoSet1_3
nvoRHDem1_3
nvoSet2_3
nvoSysDemand_3
nviCapLimit_3
nviSet1_3
Type Instance
SNVT
Type
AI
AI
AI
AI
AI
AI
AI
AO
AO
AO
AO
AO
AO
AO
AO
Instance
31
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
time_hour
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
switch
124
81
81
81
81
81
81
81
81
81
81
45
46
47
48
49
50
51
52
53
54
55
56
64
N/A
N/A
32
33
34
35
36
37
38
39
40
41
42
43
44
45
nviSet2_3
nviRHDem1_3
nviRHDem2_3
nviDisable_3
Expansion_3
Expansion_3
81
95
N/A
N/A
N/A
N/A
nvoFault_3
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
switch
switch
switch
switch
switch
switch
switch
N/A
switch
switch
N/A
N/A
N/A
95
95
95
95
95
95
95
N/A
95
95
N/A
N/A
N/A
N/A
N/A
57
58
59
60
61
62
63
N/A
65
66
N/A
N/A
N/A
N/A
N/A
Binary In
Binary In
Binary In
Binary In
Binary In
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
nvoHWSensor_3
nvoNetSensor_3
nvoDisable_3
nvoSecurity_3
nvoService_3
nvoStatus_3
Expansion_2
nviNetSensor_3
nvoConnection_3
Expansion_3
Expansion_3
Expansion_3
Expansion_3
Expansion_3
Binary In
Binary In
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
N/A
N/A
10-10
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2008-02-18
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Table 7. Humidifier Variable Addresses
Unit #4
Unit #4
BACnet
Lonworks
SNVT # Element
N2
Variable Name
nvoHourOpt_4
nvoCapLimit_4
nvoRHDem1_4
nvoSet1_4
nvoRHDem1_4
nvoSet2_4
nvoSysDemand_4
nviCapLimit_4
nviSet1_4
Type Instance
SNVT
Type
AI
AI
AI
AI
AI
AI
AI
AO
AO
AO
AO
AO
AO
AO
AO
Instance
46
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
time_hour
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
switch
124
81
81
81
81
81
81
81
81
81
81
67
68
69
70
71
72
73
74
75
76
77
78
86
N/A
N/A
47
48
49
50
51
52
53
54
55
56
57
58
59
60
nviSet2_4
nviRHDem1_4
nviRHDem2_4
nviDisable_4
Expansion_4
Expansion_4
81
95
N/A
N/A
N/A
N/A
nvoFault_4
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
switch
switch
switch
switch
switch
switch
switch
N/A
switch
switch
N/A
N/A
N/A
95
95
95
95
95
95
95
N/A
95
95
N/A
N/A
N/A
N/A
N/A
79
80
81
82
83
84
85
N/A
87
88
N/A
N/A
N/A
N/A
N/A
Binary In
Binary In
Binary In
Binary In
Binary In
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
nvoHWSensor_4
nvoNetSensor_4
nvoDisable_4
nvoSecurity_4
nvoService_4
nvoStatus_4
Expansion_2
nviNetSensor_4
nvoConnection_4
Expansion_4
Expansion_4
Expansion_4
Expansion_4
Expansion_4
Binary In
Binary In
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
N/A
N/A
10-10
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2008-02-18
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Table 8. Humidifier Variable Addresses
Unit #5
Unit #5
BACnet
Lonworks
SNVT # Element
N2
Variable Name
nvoHourOpt_5
nvoCapLimit_5
nvoRHDem1_5
nvoSet1_5
nvoRHDem1_5
nvoSet2_5
nvoSysDemand_5
nviCapLimit_5
nviSet1_5
Type Instance
SNVT
Type
AI
AI
AI
AI
AI
AI
AI
AO
AO
AO
AO
AO
AO
AO
AO
Instance
61
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
time_hour
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
switch
124
81
81
81
81
81
81
81
81
81
81
89
90
91
92
93
94
95
96
97
98
99
100
108
N/A
N/A
62
63
64
65
66
67
68
69
70
71
72
73
74
75
nviSet2_5
nviRHDem1_5
nviRHDem2_5
nviDisable_5
Expansion_5
Expansion_5
81
95
N/A
N/A
N/A
N/A
nvoFault_5
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
61
62
63
64
65
66
67
53
69
70
71
72
73
74
75
switch
switch
switch
switch
switch
switch
switch
N/A
switch
switch
N/A
N/A
N/A
95
95
95
95
95
95
95
N/A
95
95
N/A
N/A
N/A
N/A
N/A
101
102
103
104
105
106
107
N/A
109
110
N/A
N/A
N/A
N/A
N/A
Binary In
Binary In
Binary In
Binary In
Binary In
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
nvoHWSensor_5
nvoNetSensor_5
nvoDisable_5
nvoSecurity_5
nvoService_5
nvoStatus_5
Expansion_2
nviNetSensor_5
nvoConnection_5
Expansion_5
Expansion_5
Expansion_5
Expansion_5
Expansion_5
Binary In
Binary In
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
N/A
N/A
10-10
Page 12
2008-02-18
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Table 9. Humidifier Variable Addresses
Unit #6
Unit #6
BACnet
Lonworks
SNVT # Element
N2
Variable Name
nvoHourOpt_6
nvoCapLimit_6
nvoRHDem1_6
nvoSet1_6
nvoRHDem1_6
nvoSet2_6
nvoSysDemand_6
nviCapLimit_6
nviSet1_6
Type Instance
SNVT
Type
AI
AI
AI
AI
AI
AI
AI
AO
AO
AO
AO
AO
AO
AO
AO
Instance
76
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
time_hour
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
switch
124
81
81
81
81
81
81
81
81
81
81
111
112
113
114
115
116
117
118
119
120
121
122
130
N/A
N/A
77
78
79
80
81
82
83
84
85
86
87
88
89
90
nviSet2_6
nviRHDem1_6
nviRHDem2_6
nviDisable_6
Expansion_6
Expansion_6
81
95
N/A
N/A
N/A
N/A
nvoFault_6
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
switch
switch
switch
switch
switch
switch
switch
N/A
switch
switch
N/A
N/A
N/A
95
95
95
95
95
95
95
N/A
95
95
N/A
N/A
N/A
N/A
N/A
123
124
125
126
127
128
129
N/A
131
132
N/A
N/A
N/A
N/A
N/A
Binary In
Binary In
Binary In
Binary In
Binary In
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
nvoHWSensor_6
nvoNetSensor_6
nvoDisable_6
nvoSecurity_6
nvoService_6
nvoStatus_6
Expansion_6
nviNetSensor_6
nvoConnection_6
Expansion_6
Expansion_6
Expansion_6
Expansion_6
Expansion_6
Binary In
Binary In
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
N/A
N/A
10-10
Page 13
2008-02-18
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Table 10. Humidifier Variable Addresses
Unit #7
Unit #7
BACnet
Lonworks
SNVT # Element
N2
Variable Name
nvoHourOpt_7
nvoCapLimit_7
nvoRHDem1_7
nvoSet1_7
nvoRHDem1_7
nvoSet2_7
nvoSysDemand_7
nviCapLimit_7
nviSet1_7
Type Instance
SNVT
Type
AI
AI
AI
AI
AI
AI
AI
AO
AO
AO
AO
AO
AO
AO
AO
Instance
91
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
time_hour
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
switch
124
81
81
81
81
81
81
81
81
81
81
133
134
135
136
137
138
139
140
141
142
143
144
152
N/A
N/A
92
93
94
95
96
97
98
99
100
101
102
103
104
105
nviSet2_7
nviRHDem1_7
nviRHDem2_7
nviDisable_7
Expansion_7
Expansion_7
81
95
N/A
N/A
N/A
N/A
nvoFault_7
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
switch
switch
switch
switch
switch
switch
switch
N/A
switch
switch
N/A
N/A
N/A
95
95
95
95
95
95
95
N/A
95
95
N/A
N/A
N/A
N/A
N/A
145
146
147
148
149
150
151
N/A
153
154
N/A
N/A
N/A
N/A
N/A
Binary In
Binary In
Binary In
Binary In
Binary In
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
nvoHWSensor_7
nvoNetSensor_7
nvoDisable_7
nvoSecurity_7
nvoService_7
nvoStatus_7
Expansion_7
nviNetSensor_7
nvoConnection_7
Expansion_7
Expansion_7
Expansion_7
Expansion_7
Expansion_7
Binary In
Binary In
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
N/A
N/A
10-10
Page 14
2008-02-18
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Table 11. Humidifier Variable Addresses
Unit #8
Unit #8
BACnet
Lonworks
SNVT # Element
N2
Variable Name
nvoHourOpt_8
nvoCapLimit_8
nvoRHDem1_8
nvoSet1_8
nvoRHDem1_8
nvoSet2_8
nvoSysDemand_8
nviCapLimit_8
nviSet1_8
Type Instance
SNVT
Type
AI
AI
AI
AI
AI
AI
AI
AO
AO
AO
AO
AO
AO
AO
AO
Instance
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
AV
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
time_hour
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
lev_percent
switch
124
81
81
81
81
81
81
81
81
81
81
81
95
N/A
N/A
155
156
157
158
159
160
161
162
163
164
165
166
174
N/A
N/A
nviSet2_8
nviRHDem1_8
nviRHDem2_8
nviDisable_8
Expansion_8
Expansion_8
N/A
N/A
nvoFault_8
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
BV
106
107
108
109
110
111
112
116
114
115
116
117
118
119
120
switch
switch
switch
switch
switch
switch
switch
N/A
switch
switch
N/A
N/A
N/A
95
95
95
95
95
95
95
N/A
95
95
N/A
N/A
N/A
N/A
N/A
167
168
169
170
171
172
173
N/A
175
176
N/A
N/A
N/A
N/A
N/A
Binary In
Binary In
Binary In
Binary In
Binary In
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
nvoHWSensor_8
nvoNetSensor_8
nvoDisable_8
nvoSecurity_8
nvoService_8
nvoStatus_8
Expansion_8
nviNetSensor_8
nvoConnection_8
Expansion_8
Expansion_8
Expansion_8
Expansion_8
Expansion_8
Binary In
Binary In
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
Binary Out
N/A
N/A
10-10
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Configuration Variables
nviInputType_x = 1
nviNetSensor_x = 1
Control Variables
nviSet1_x = Room Setpoint (0-100%)
nviSet2_x = Hi-Limit Setpoint (0-100%)
nviRHDem1_x = Room %RH (0-100%)
nviRHDem2_x = Hi-Limit %RH (0-100%)
nviDisable_x = 1 Unit Disabled
= 0 Unit Enabled
Readable Variables
nvoStatus_x = 1 Humidifying
= 0 Standby
nvoService_x = 1 Service Required
= 0 No Service Required
nvoFault_x = 1 Fault
= 0 No Fault
nvoSysDemand_x = System Demand(0-100%)
nvoDisable_x = 1 Unit Disabled
= 0 Unit Enabled
NHTC
Figure 1. Sample Humidification Applications
Room-Sensed %RH Feedback with Duct Hi-Limit Sensing
Configuration Variables
nviInputType_x = 0
nviNetSensor_x = 1
Control Variables
nviSet1_x = Room Setpoint (0-100%)
nviSet2_x = Hi-Limit Setpoint (0-100%)
nviRHDem1_x = Room %RH (0-100%)
nviRHDem2_x = Hi-Limit %RH (0-100%)
nviDisable_x = 1 Unit Disabled
= 0 Unit Enabled
Readable Variables
nvoStatus_x = 1 Humidifying
= 0 Standby
nvoService_x = 1 Service Required
= 0 No Service Required
nvoFault_x = 1 Fault
= 0 No Fault
nvoSysDemand_x = System Demand(0-100%)
NHTC
nvoDisable_x = 1 Unit Disabled
=
0 Unit Enabled
Figure 2. Sample Humidification Applications
Control Feedback (0-100%) with Duct Hi-Limit Sensing
10-10
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Configuration Variables
nviInputType_x = 1
nviNetSensor_x = 0
Control Variables
nviSet1_x = Room Setpoint (0-100%)
nviSet2_x = Hi-Limit Setpoint (0-100%)
nviRHDem1_x = Room %RH (0-100%)
nviRHDem2_x = Hi-Limit %RH (0-100%)
nviDisable_x = 1 Unit Disabled
= 0 Unit Enabled
Readable Variables
nvoStatus_x = 1 Humidifying
= 0 Standby
nvoService_x = 1 Service Required
= 0 No Service Required
nvoFault_x = 1 Fault
= 0 No Fault
nvoSysDemand_x = System Demand(0-100%)
nvoDisable_x = 1 Unit Disabled
= 0 Unit Enabled
NHTC
Figure 3. Sample Humidification Applications
Room-Sensed %RH Feedback with Duct Hi-Limit Sensing (0-10V Signal Directly to
Humidifier)
10-10
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10-10
Page 18
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10-20
START-UP
10-20
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(1) NORTEC LINKS 2 START-UP CHECKLIST
WIRING
Humidifier-to-Humidifier Connection:
Each individual humidifier linked to lead unit.
Connection must be daisy-chained to other units.
ˆ
ˆ
BMS Network Connection:
Lead unit wired to BMS system (Twisted Pair or Ethernet).
Network activity verified.
ˆ
ˆ
Controls Wired:
Directly to humidifiers or through BMS network.
ˆ
(2) START-UP PROCEDURE
(1) Ensure power is being supplied to the humidifier, Nortec Links Module and Nortec
OnLine module. For BACnet/IP adjust network IP settings. (If this information is
provided, factory will perform necessary IP assignment).
(2) After power-up, verify network communication.
(3) Map desired network variables to BMS.
(4) Verify variable operation after mapping is complete.
(5) Perform regular humidifier start-up check.
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10-30
TROUBLESHOOTING
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(1) TROUBLESHOOTING
(1) When troubleshooting the communication process for OnLine and/or LINKS 2
modules should be kept in mind. Humidifier data is first received by the Nortec
OnLine module using the modbus protocol over the serial port connection. It then
forwards this data, via modbus/TCP, to the LINKS 2 module over an Ethernet link. A
router (switch for BACnet/IP applications) links the two devices together through their
Ethernet ports and allows a user to access both devices using only 1 customer
installed Ethernet line.
(2) INDICATOR LIGHTS
(1) There is a variety of status LEDs on both the OnLine module and the LINKS 2
module to aid in the diagnosis of communication problems. Note that communication
first occurs between the OnLine module and the humidifier logic board. The OnLine
module then passes information to the LINKS 2 module. If practical, it may be useful
to establish a connection with the Nortec OnLine server first and then establish
communication with the LINKS 2 module.
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Module
Status
RX – Receive LED
Serial
Port
Activity
Power LED
Ethernet
Activity
Ethernet
Link
TX – Transmit LED
Figure 1. OnLine Diagnostic LED Locations
Figure 2. BACnet Module LED
Lon Device Status
RX –
Receive LED
Power LED
Ethernet
Activity
Ethernet
LINKS 2
TX –
Transmit LED
Figure 3. LonWorks Module LED
Figure 4. Ethernet Port
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Table 1. OnLine Diagnostic LED Description
LED Name
Module Status
Color
Function
Off
Indicates that the Online module is not receiving
power.
Green
Orange
Indicates the Online module is operating
normally.
Indicates that the Online module is loading the
firmware installed on the module.
Serial Port Activity
Flashing Green
Flashing Red
Indicates that the Online module is receiving a
network packet from a serial connection.
Indicates that the Online module is transmitting a
network packet on a serial connection.
Orange
Displayed when the Online module is booting.
Indicates that the Online module is receiving a
network packet from an Ethernet connection.
Ethernet Activity/Collision
Ethernet Link
Flashing Green
Indicates that the Online module is transmitting a
network packet on an Ethernet connection.
Flashing Red
Off
No network connection is present.
The Online module has detected the presence of
a 10Mbps network.
Green
The Online module has detected the presence of
a 100Mbps network.
Orange
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Table 2. LINKS 2 Module Diagnostic LEDs
LED Name
Color
Function
Module Power
Off
Indicates that the Online module is not receiving
power.
Green
Indicates the Online module is operating
normally.
Receive LED (marked as Rx on
processor board)
Flashing Green
Flashing Green
Indicates that the Online module is receiving a
network packet from a serial connection.
Transmit LED (marked as Tx on
processor board)
Indicates that the Online module is transmitting a
network packet on a serial connection.
Ethernet LINK
Off
Indicates no Ethernet connection is present.
Solid Yellow
Indicates an Ethernet connection has been
detected.
Ethernet Activity
Off
No Ethernet network activity.
Indicates Ethernet activity.
Flashing Green
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Table 3. Troubleshooting Communication Problems
Problem
Solution
1. The BMS network cannot
read/write any information to any of
the networked humidifiers
Verify that the network connection is made and is connected properly.
Verify that the correct network settings are being used. The LINKS 2 module
may need to be restarted to load the new settings.
Check the Serial Port Activity LED on the Nortec OnLine module to ensure
proper communication with the humidifiers. Data is first received from the
humidifier to the OnLine module. The OnLine module then transmits this
data, via the Ethernet port, to the LINKS 2 module.
Check the Ethernet port activity on the LINKS 2 module to ensure it is
receiving data from the Nortec OnLine module.
Check the transmit and receive status LEDs to determine if there is any
network traffic being sent or being received by the LINKS 2 module from the
BMS network
Verify proper connections to networked humidifiers.
Turn the LINKS 2 module and the OnLine module off for several seconds
then switch it back on to reload the control program. Allow for some time for
the network variables to be polled.
2. The BMS network can see some
of the networked humidifiers but not
others.
Ensure network variables are mapped correctly to the BMS.
Ensure proper connections to the humidifiers.
Disconnect all of the humidifiers from the LINKS 2 package except for the unit
that is not responding to the network. Turn the LINKS 2 package off and then
back on. Check if the humidifier can now be seen by the BMS
3. The BMS network receives
information from the networked
humidifier(s) but the information is
mismatched or the humidifier
responds un-expectedly
Verify that the network variables have been mapped to the BMS network
correctly. It is possible that the variables have been cross-linked during the
network integration process.
Connect humidifiers one at a time and test units individually.
4. After sending the humidifier a
network-based demand signal the
unit powers down after several
minutes. The nviNetSensor variable
is switched on and a value has been
set for the nviRHDem1 variable.
When a BMS network demand/RH signal is being used the network must
refresh the nviRHDem signal at least every 5 minutes otherwise the
humidifier will revert to a 0 demand state. This is a safety precaution in case
the BMS network connection is lost.
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10-40
SPARE PARTS
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Table 1. Replacement Parts
Nortec LINKS 2 Options
Specify Unit Type Protocol at time of order
Part Number Description
BACnet/MSTP
BACnet/IP
N2
LonWorks
LINKS 2 Replacement Module,
BACnet/IP
2527101
2527102
2527103
2527104
X
LINKS 2 Replacement Module,
BACnet/MSTP
X
LINKS 2 Replacement Module,
LonWorks
X
LINKS 2 Replacement Module, N2
X
X
X
1509604
OnLine Replacement Module, Static/IP
X
X
X
X
X
2528126
2531455
2530087
LINKS 2 Replacement Router
LINKS 2 Ethernet Switch
X
X
24VAV to 9VDC Power Supply (for
switch or router)
X
X
X
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Figure 1. BACnet or N2 Module
Figure 2. LonWorks Module
Figure 3. OnLine Module
Figure 4. Ethernet Router
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Figure 5. Ethernet Switch
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10-50
TECHNICAL
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To Units
2 to 8
External wiring ‘by others’
- 18 to 24 AWG stranded
- Twisted pair, shielded
A B
Nortec LINKS 2
Terminal Strip
(Unit 1)
External
Internal
J5
1
RJ-45
RJ-12
J3
Nortec OnLine
Module
Nortec LINKS 2
Module
NHTC
Processor
Board
RJ-45
EIA-232
Serial Port
J1
J4
J2
1
2
3
4
5
9 VDC Input
+9V on center pin
DC Power
Supply
LAN Ports
5-Port Ethernet
Switch
24 VAC HOT
AC GND
DC GND
9 VDC OUT
Note:
Use open LAN port when employing an internet connection
for BACnet/IP and/or Nortec OnLine.
WID NHTC LINKS 2 BACnet/IP Option
Supplemental Wiring Diagram
Diagram No. 2531457 Rev. B Aug 22, 2007
Figure 1. Wiring Diagram
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External wiring ‘by others’
- 18 to 24 AWG stranded
- Twisted pair, shielded
To BMS
Network
To Units
2 to 8
A B
Nortec LINKS 2
Terminal Strip
(Unit 1)
External
Internal
J5
1
RJ-45
RJ-12
J3
Nortec OnLine
Module
Nortec LINKS 2
Module
NHTC
Processor
Board
RJ-45
EIA-232
Serial Port
J1
J2
J4
LonWorks
Service Pin
1
2
3
4
9 VDC Input
+9V on center pin
DC Power
Supply
LAN Ports
24 VAC HOT
AC GND
4-Port Router
WAN Port
DC GND
9 VDC OUT
Note:
Use Router WAN port when employing an internet
connection for OnLine.
Use A and B terminals for LonWorks feedback.
WID NHTC LINKS 2 LonWorks Option
Supplemental Wiring Diagram
Diagram No. 2531433 Rev. B Aug 21, 2007
Figure 2. Wiring Diagram
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External wiring ‘by others’
- 18 to 24 AWG stranded
- Twisted pair, shielded
To BMS
Network
To Units
2 to 13
A B
Nortec LINKS 2
Terminal Strip
(Unit 1)
External
Internal
J5
1
J3
RJ-12
Nortec LINKS 2
Module
Nortec OnLine
NHTC
Processor
Board
Module
RJ-45
RJ-45
EIA-232
Serial Port
J1
J2
J4
1
2
3
4
9 VDC Input
+9V on center pin
DC Power
Supply
LAN Ports
24 VAC HOT
AC GND
4-Port Router
WAN Port
DC GND
9 VDC OUT
User Interface
Ports
Note:
Use Router WAN port when employing an internet
connection for OnLine.
Use A and B terminals for Johnson N2 and BACnet/MSTP
feedback.
Customer Internet
Connection
(OnLine Interface)
WID NHTC Nortec LINKS 2 Option
Supplemental Wiring Diagram
Diagram No. 2525757 Rev. A Aug 1, 2007
Figure 3. Wiring Diagram
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THIS PAGE INTENTIONALLY LEFT BLANK
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WARRANTY
(1) WALTER MEIER INC. and/or WALTER MEIER LTD. (hereinafter collectively referred
to as THE COMPANY), warrant for a period of two years after installation or 30 months
from manufacturer’s ship date, whichever date is earlier, that THE COMPANY’s
manufactured and assembled products, not otherwise expressly warranted (with the
exception of the cylinder), are free from defects in material and workmanship. No
warranty is made against corrosion, deterioration, or suitability of substituted materials
used as a result of compliance with government regulations.
(2) THE COMPANY’s obligations and liabilities under this warranty are limited to furnishing
replacement parts to the customer, F.O.B. THE COMPANY’s factory, providing the
defective part(s) is returned freight prepaid by the customer. Parts used for repairs are
warranted for the balance of the term of the warranty on the original humidifier or
90 days, whichever is longer.
(3) The warranties set forth herein are in lieu of all other warranties expressed or implied
by law. No liability whatsoever shall be attached to THE COMPANY until said products
have been paid for in full and then said liability shall be limited to the original purchase
price for the product. Any further warranty must be in writing, signed by an officer of
THE COMPANY.
(4) THE COMPANY’s limited warranty on accessories, not of the companies manufacture,
such as controls, humidistats, pumps, etc. is limited to the warranty of the original
equipment manufacturer from date of original shipment of humidifier.
(5) THE COMPANY makes no warranty and assumes no liability unless the equipment is
installed in strict accordance with a copy of the catalog and installation manual in effect
at the date of purchase and by a contractor approved by THE COMPANY to install
such equipment.
(6) THE COMPANY makes no warranty and assumes no liability whatsoever for
consequential damage or damage resulting directly from misapplication, incorrect
sizing or lack of proper maintenance of the equipment.
(7) THE COMPANY retains the right to change the design, specification and performance
criteria of its products without notice or obligation.
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INSTALLATION DATE (MM/DD/YYYY)
MODEL #
SERIAL #
U.S.A.
CANADA
Authorized Agent:
Walter Meier (Climate USA) Inc.
Walter Meier (Climate Canada) Ltd.
826 Proctor Avenue
Ogdensburg, NY 13669
TEL: 1-866-NORTEC-1
2740 Fenton Road
Ottawa, ON K1T 3T7
TEL: 1-866-NORTEC-1
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