Nortec BACnet User Manual

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

INSTALLATION DATE (MM/DD/YYYY)

MODEL #

SERIAL #

CYLINDER #

Thank you for choosing Nortec.

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.

Copyright Notice

Copyright 2013, Nortec Humidity Ltd. All rights reserved
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

CAUTION: Electrical

CAUTION: Installation

 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.

 All electrical work should be done according to local and national electrical code.
 Electrical connection to be performed by a licensed electrician.

 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

Signal
Type

Polarity

Recommended Cable

Address

Maximum Recommended Distance
from NORTEC Humidifier

A

B

Node

ID

Device

Instance

EIA-485,
2-wire

Net - Net

+

18-24 AWG Shielded,
Twisted Pair
120  Impedance

79*

1001*

2300 ft at 9.6 kbps

2000 ft at 38.4 kbps

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

*Default, may vary for multi-unit orders.

3 | BACnet & LONWORKS Supplemental Install Manual

BACnet IP

Signal Type

BACnet IP

Recommended Cable

Address

Maximum
Recommended Distance
from NORTEC Humidifier

Transmission

Mode

Port

Node

ID

Device

Instance

LAN
Standard

UDP

47808

Category 5 Ethernet
Cable (CAT 5 or better)
with RJ-45 termination

79*

12*

Depends on cable
manufacturer, refer to
BMS Supplier for
recommendations

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

*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

J15

J1

J2J3

J6

J10

J12

J14

J19

J21

J23

J16

BACnet MS/TP Port

NET
NET
COMMON

(-)

()+

NH-EL BACnet MS/TP Connection

External wiring ‘by others’

RS-485 cable recommended:

-18-24 AWG stranded

-Twisted pair, Shielded

-120 Ohm impedance

-Terminate shield at one end only

Figure 3: BACnet MS/TP Wiring Diagram

BACnet & LONWORKS Supplemental Install Manual | 6

Figure 4: BACnet IP Wiring Diagram

7 | BACnet & LONWORKS Supplemental Install Manual

Addressing and Communication

BACnet IP

BACnet MSTP

Default IP addressing

IP Type: DHCP
IP: 192.168.168.243
Subnet: 255.255.255.000
Gateway: 192.168.168.101

N/A
Default BACnet Address

(MAC address)

79

79

Default BACnet Node ID
(Device Instance)

12

1001

After wiring connections have been completed, the humidifier needs to be setup to operate and
communicate through the BACnet interface.

BACnet Communication Set-up

The following table demonstrates the default addressing found on the NH-EL:

Table 3: BACnet Specific Defaults

Locating the IP addressing in the NH-EL is summarized as follows:
Main Menu > 0335 > Configuration > Comms. Menu > Network Parameters >

Note: By default, the NH-EL will have BACnet disabled. To enable BACnet, select BACnet IP or
BACnet MSTP under BACnet Parameters. Select the respective protocol and confirm the
selection by pressing the Check Mark button. This action is summarized as follows:

Main Menu > 0335 > Configuration > Comms. Menu > BACnet Parameters >

Once BACnet is enabled, addressing can be modified as desired.
Locating the BACnet Address (MAC address) in the NH-EL is summarized as follows:

Main Menu > 0335 > Configuration > Comms. Menu > BACnet Parameters > BACnet MSTP
address

Locating the BACnet Node ID (Device Instance) in the NH-EL is summarized as follows:
Main Menu > 0335 > Configuration > Comms. Menu > BACnet Parameters > Node ID

BACnet & LONWORKS Supplemental Install Manual | 8

Control Signal Setting

Source

Analog: Use hardwired control signal
BACnet/IP: Write control signal through BACnet/IP interface
BACnet/MS: Write control signal through BACnet/MS interface

Control Mode

Demand: Use a demand control signal
RH P: Use a sensor value and proportional
RH PI: Use a sensor value and proportional-integral control band

Control Channels

Single: Use a single channel control signal
Dual: Use a dual channel control signal

By default the humidifier is configured to operate on a hardwired control signal supplied through
the unit terminal strip. This can be changed to allow the humidifier to function entirely through
its BACnet interface.
*Note: the Humidifier Security loop will still need to be enabled for humidifier to run.

To adjust this setting:

1 Press the Menu icon on the lower left corner of the status screen, to access the menu.
2 When prompted for a password, enter 0335 using the number pad. Press the Check Mark

icon to confirm.

3 Select the Configuration menu.
4 Select the Control Settings menu. The following settings can be adjusted:

Table 4: Control Signal Parameters

Note: Refer to the CONTROL SETTING section of the NH-EL Installation and Operation Manual
for more information on the above settings.

5 Press Back repeatedly to return to the home screen when complete.

This procedure is summarized below:
Main Menu > 0335 > Configuration > Control Settings >

Source: Analog, BACnet/IP, BACnet/MS,
Control Mode: Demand, RH P, or RH PI
Control Channels: Single or Dual

9 | BACnet & LONWORKS Supplemental Install Manual

Control Mapping

Parameter
Name

Description

BACnet

ID

Format

Range

Unit

R/W

Details

Dinput_A1

Write RH or
Demand signal
value to control
channel 1 for
cylinder A

10044

Integer

0 - 100

%

Write

Requires BACnet to be enabled.

For most common configurations,
this is the primary control signal

Dinput_A2

Write RH or
Demand signal
value to control
channel 2 for
cylinder A

10045

Integer

0 - 100

%

Write

Requires BACnet to be enabled.

Dinput_B1

Write RH or
Demand signal
value to control
channel 1 for
cylinder B

10046

Integer

0 - 100

%

Write

Requires BACnet to be enabled.

Only applies to NH-EL-150 and
NH-EL-200 with dual channel
control enabled

Dinput_B2

Write RH or
Demand signal
value to control
channel 2 for
cylinder B

10047

Integer

0 - 100

%

Write

Requires BACnet to be enabled.

Only applies to NH-EL-150 and
NH-EL-200 with cylinders dual
channel control enabled and
cylinders in independent
operation mode

Manual_

Capcity_A

Sets a manual
capacity limit
restriction for
cylinder A

10008

Integer

0 - 100

%

Write

Limits output to percentage of
total cylinder capacity (for single
cylinder) or for cylinder A (NH-EL­150 and NH-EL-200 models only)

Manual_

Capcity_B

Sets a manual
capacity limit
restriction for
cylinder B (if
present)

10027

Integer

0 - 100

%

Write

Limits output to percentage
capacity for cylinder B (NH-EL­150 and NH-EL-200 models only)

BMS_

Timeout

BMS timeout

for Modbus and
BACnet

10043

Integer

0 - 300

s

Write

It is recommend to not change
the value from the factory default
(300)

Remote_

Disable

Remotely
disable steam
production for
the unit

25

Integer

0 or 1

-

Write

0 = Idle/Humidify
1 = Disabled

SP_Chan_
A1

Writes the
desired space
setpoint for
control channel
1 for cylinder A

10010

Integer

0 - 95

%

Write

Use only when Control Mode (14)
is set to RHp or RHpi

Use only when sending RH values
to Dinput_A1.

For most common configurations
this is the primary space
setpoint.

Table 5: BACnet Object Definition List

BACnet & LONWORKS Supplemental Install Manual | 10

SP_Chan_
A2

Writes the
desired space
setpoint for
control channel
2 for cylinder A

10013

Integer

10 - 95

%

Write

Use only when sending RH value
to Dinput_A2 with dual channel
control enabled

SP_Chan_
B1

Writes the
desired space
setpoint for
control channel
1 for cylinder B

10016

Integer

0 - 95

%

Write

Use only with NH-EL-150 and NH­EL-200 models when sending RH
value to Dinput_B1 and cylinders
are in independent operation
mode

SP_Chan_
B2

Writes the
desired space
setpoint for
control channel
2 for cylinder B

10019

Integer

10 - 95

%

Write

Use only with NH-EL-150 and NH­EL-200 models when sending RH
value to Dinput_B2 with dual
channel control enabled and
cylinders are in independent
operation mode

Signal_

Source

Selects signal
source to
control unit

13

Integer

0 - 4

-

Write

0 = Analog

1 = Modbus

2 = BACnet/IP

3 = BACnet/MS

4 = LonWorks

Control_M
ode

Selects method
to control unit

14

Integer

1 - 3

-

Write

1 = Demand

2 = RH P

3 = RH PI

Control_

Channel

Selects method
to control
channels

15

Integer

0 - 1

-

Write

0 = Single Channel

1 = Dual Channel

Input_A1

Displays
channel 1
demand for
cylinder A

10001

Integer

0 - 100

%

Read

Displays channel 1
demand/sensed RH as a
percentage of cylinder capacity
for cylinder A

Input_A2

Displays
channel 2
demand for
cylinder A

10002

Integer

0 - 100

%

Read

Displays channel 2
demand/sensed RH as a
percentage of cylinder capacity
for cylinder A

Input_B1

Displays
channel 1
demand for
cylinder B

10003

Integer

0 - 100

%

Read

Displays channel 1
demand/sensed RH as a
percentage of cylinder capacity
for cylinder B (NH-EL-150 and
NH-EL-200 models only)

Input_B2

Displays
channel 2
demand for
cylinder B

10004

Integer

0 - 100

%

Read

Displays channel 2
demand/sensed RH as a
percentage of cylinder capacity
for cylinder B (NH-EL-150 and
NH-EL-200 models only)

Blower_
Pack_A

Reads the
status of the
blower pack for
cylinder A

4

Integer

0 or 1

-

Read

0 = Open
1 = Closed

11 | BACnet & LONWORKS Supplemental Install Manual

Blower_
Pack_B

Reads the
status of the
blower pack for
cylinder B

6

Integer

0 or 1

-

Read

0 = Open
1 = Closed

Fan_
Activate_A

Indicates if air
handle or
furnace is
activated for
cylinder A

1

Integer

0 or 1

-

Read

0 = Not Activated

1 = Activated

Fan_
Activate_B

Indicates if air
handle or
furnace is
activated for
cylinder B

2

Integer

0 or 1

-

Read

0 = Not Activated

1 = Activated
Do_Fault_

A

Reads the
status of a fault
on the unit

69

Integer

0 or 1

-

Read

0 = No Fault

1 = Fault

Do_
Service_A

Reads the
status of a
service request
on the unit

67

Integer

0 or 1

-

Read

0 = No Service Required

1 = Service Required

Humidifier
_

Status_A

Reads the
status of the
unit for cylinder
A

36

Integer

0 - 9

-

Read

0 = Humidifying

1 = Idle

2 = Idle Drain

3 = Keepwarm

4 = Filling

5 = Draining

6 = Disabled

7 = Safety Loop

8 = Warning

9 = Fault

10 = blower pack

Humidifier
_

Status_B

Reads the
status of the
unit for cylinder
A

57

Integer

0 - 9

-

Read

0 = Humidifying

1 = Idle

2 = Idle Drain

3 = Keepwarm

4 = Filling

5 = Draining

6 = Disabled

7 = Safety Loop

8 = Warning

9 = Fault

10 = blower pack

BACnet & LONWORKS Supplemental Install Manual | 12

System_

Demand_A

Reads the
demand for
cylinder A

10057

Integer

0 –
100

%

Read

Demand Mode:

Summation of Input_A1 and
Input_A2

RH Mode:

PID calculation

System_

Demand_
B

Reads the
demand for
cylinder B

10058

Integer

0 –
100

%

Read

Demand Mode:

Summation of Input_B1 and
Input_B2

RH Mode:

PID calculation

Safety_
Loop_A

Reads the
status of the
safety loop for
cylinder A

3

Integer

0 or 1

-

Read

0 = Open

1 = Closed

Safety_
Loop_B

Reads the
status of the
safety loop for
cylinder B

5

Integer

0 or 1

-

Read

0 = Open

1 = Closed

Run_Time
_A

Reads
operating time
for cylinder A

10060

Integer

0 ­5000

Hrs

Read

Displays the total time cylinder A
has been running since last reset

Run_Time
_B

Reads
operating time
for cylinder B

10079

Integer

0 ­5000

Hrs

Read

Displays the total time cylinder B
has been running since last reset

Weighted_

Hours_A

Reads the
weighted time
for cylinder A

10061

Integer

0 ­5000

Hrs

Read

An equated run time based on
Run_Time_A x
System_Demand_A

Weighted_

Hours_B

Reads the
weighted time
for cylinder B

10080

Integer

0 ­5000

Hrs

Read

An equated run time based on
Run_Time_B x
System_Demand_B

13 | BACnet & LONWORKS Supplemental Install Manual

Part
Number

Kit Name

Kit Description

2574194

Lonworks, NH-EL

Factory installed option for Echelon’s LonWorks
protocol

2574193

BACnet MSTP, BTL Certified, NH-EL

Factory installed option for BTL approved protocol for
BACnet MSTP

2574192

BACnet IP, BTL Certified, NH-EL

Factory installed option for BTL approved protocol for
BACnet IP

Part
Number

Kit Name

Kit Description

2574197

Lonworks, NH-EL , Retrofit

Field install option for Echelon’s LonWorks protocol

2574196

BACnet MSTP, BTL , NH-EL Retrofit

Field install option for BTL approved protocol for BACnet
MSTP

2574195

BACnet IP, BTL, NH-EL Retrofit

Field install option for BTL approved protocol for BACnet
IP

1

Options (Lonworks, BTL Certified BACnet)

Nortec offers additional protocol options that may be purchased if required. Both field and
factory installed versions are available and include Lonworks and BTL® (BACnet Testing Lab)1
certified BACnet. See Table #6 and Table #7 for specific part numbers and details.

Table 6: Optional Factory Installed Part Numbers

Table 7: Optional Field Install Part Numbers

Field Retrofit Installation

The kits consist of a single interface card that is mounted on the rear side of the integrated
controller. Care should be taken with installation the optional unit in the field. Users will need to
install the interface card onto the pins as shown in Figure 5: Mounting Location and Figure 6:

Pin Alignment. Figure 8: BACnet Specific Port and Figure 9: LonWorks Specific Port display the

location of each port for the respective protocol.

BTL is a registered trademark of BACnet International (BI)

BACnet & LONWORKS Supplemental Install Manual | 14

Figure 5: Mounting Location

Figure 6: Pin Alignment

15 | BACnet & LONWORKS Supplemental Install Manual

Figure 7: Installation complete

Figure 8: BACnet Specific Ports

Figure 9: LonWorks Specific Port

BACnet & LONWORKS Supplemental Install Manual | 16

Addressing and Communication

Source

Analog: Use hardwired control signal
Modbus: Write control signal through BTL Certified BACnet Option
LonWorks: Write control signal through LonWorks Option

Control Mode

Demand: Use a demand control signal
RH P: Use a sensor value and proportional
RH PI: Use a sensor value and proportional-integral control band

Control Channels

Single: Use a single channel control signal
Dual: Use a dual channel control signal

After wiring connections have been completed, the humidifier needs to be setup to operate and
communicate through the interface. The initial step is to configure the Control settings to
ensure the humidifier points to the installed option.

Control Signal Setting

By default the humidifier is configured operate on a hardwired control signal supplied through
the unit terminal strip. This can be changed to allow the humidifier to function entirely through
its Optional interface.

To adjust this setting:

1 Press the Menu icon on the lower left corner of the screen, to access the menu.
2 When prompted for a password, enter 0335 using the number pad. Press the Check Mark

icon to confirm.

3 Select the Configuration menu.
4 Select the Control Settings menu. The following settings can be adjusted:

Table 8: BTL / Lonworks Control Signal Parameters

Note: Refer to the CONTROL SETTING section of the NH-EL Installation and Operation Manual
for more information on the above settings.

5 Press Back repeatedly to return to the home screen when complete.

This procedure is summarized below:
Main Menu > 0335 > Configuration > Control Settings >

Source: Analog, Modbus, LonWorks
Control Mode: Demand, RH P, or RH PI
Control Channels: Single or Dual

17 | BACnet & LONWORKS Supplemental Install Manual

Controller Set-up

The BACnet BTL or LonWorks options utilize an additional hardware component. Protocol
configuration is completed at the factory, prior to final testing. It may be necessary to configure
the address parameters in the field.

BACnet IP systems will require a static IP address to communicate on the network.
BACnet MS/TP systems require both a device instance and a baud rate to be set.
LonWorks systems automatically detect network address parameters and do not require
configuration.

BTL Certified BACnet specific : Changing Unit Addressing

The BTL Certified BACnet options utilize an additional hardware component for translation. For
address changes in either BACnet MS/TP or BACnet IP, the device instance and BACnet MAC
address can be modified easily using the dip switches shown in Figure 10: Dipswitches on BTL

Certified BACnet.

Figure 10: Dipswitches on BTL Certified BACnet

These switches allow you to set a binary value between 1 and 127 inclusive. The methodology
for converting numbers to binary is presented in Appendix A. To set the device instance to a
value outside of this range, a specific web browser tool may be used to make IP and address
modifications in the field, Contact Nortec Technical Services for further detail.

Take care when adjusting switches to ensure the settings are entered as intended. Common
settings are tabulated in Appendix A. After an address change has been made, the humidifier
must be power cycled for the change to take effect.

BACnet & LONWORKS Supplemental Install Manual | 18

Changing Baud Rate (BACnet MSTP Only)

The baud rate for communications can also be changed through the respective dip switches.

By adjusting the settings according to Appendix A, the baud rate can be changed. For best
results it is recommended to set the baud rate to Auto (BACnet MSTP only), 9600, 19200, or

38400. Communication performance varies with building automation system manufacturer
and some experimentation with other baud rates may be required to obtain the best
performance. The Auto setting is currently only supported for BACnet MSTP networks.

BACnet Pics and Bibs

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.

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.

LonWorks Variables

LonWorks uses the identical set of variables/points as BACnet. For a detailed list of the
variables, please see Appendix B.

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.

The XIF file can be retrieved directly from the Optional Interface Card. A Windows based laptop
and an Ethernet cable (CAT 5 or better) are required for this process. This process requires the
“Remote User Interface” software tool from Fieldserver. It is available by visiting

http://fieldserver.com/techsupport/utility/utility.php and downloading the “Utility” software:

19 | BACnet & LONWORKS Supplemental Install Manual

Figure 11: Software Retrieval

Once this software has been installed, use the following procedure:

1. Locate desired humidifier. Ensure unit is powered on and remove the panel on the Front

side of the humidifier. Locate the Integrated Controller Board inside of the unit.

2. Connect one end of the CAT5 cable into the Ethernet port on the Optional Interface Card

directly.

3. Connect other end of CAT5 cable to the Ethernet port on the laptop.

4. Run the “Remote User Interface” utility by double clicking the shortcut on your desktop (or

Start>Programs>Fieldserver Utilities>Remote User Interface)

5. The program should automatically recognize connected humidifier and bring you to the

“Main Menu”. If it does not, contact Nortec Technical Services at the number on the back

cover of this manual.

6. Type “u” for upload.

7. Type “o” for other. (A warning will appear, press any key to continue.)

8. Type “r” for remote.

BACnet & LONWORKS Supplemental Install Manual | 20

9. Enter “fserver.xif”’ and hit the ‘enter’ key.

10. Type “u” to initiate upload from the humidifier to the laptop.

11. The .xif file will be saved in the folder “Configuration File Folder” located at

Start>Programs>Fieldserver Utilities>Configuration File Folder.

12. Type ‘q’ twice to exit out of the program

13. Locate file in Configuration File Folder and change name to corresponding humidifier, (ex,

“fserverH1.xif” for Humidifier 1)

14. Repeat this procedure for humidifiers changing the name of the .xif once saved to

correspond with the tag of the appropriate humidifier.

21 | BACnet & LONWORKS Supplemental Install Manual

Troubleshooting

Problem

Resolutions

Cannot see/change
set
object/parameter
from BMS

Check control type. Demand type controls use internal algorithms to
generate a signal telling the humidifier to operate at a certain output
percentage. These of controls do not report the detected humidity
level or set point to the humidifier. As a result the set point and
space humidity levels cannot be monitored through the humidifier
when using demand controls.

Sensor ("transducer") type controls report a sensed humidity value to
the humidifier. The set point is configured at the humidifier and the
humidifier uses internal algorithms to determine the output
percentage. Since the humidifier knows both the set point and
humidity level, these values may be monitored through the
humidifier.

Cannot establish
communication.

Check communication parameters. Nortec humidifiers are capable
of BACnet MSTP and IP communication. LonWorks and BTL certified
BACnet based systems require an interface card to translate the
information, See Options for respective part numbers.
Verify Hardware connections from BMS to humidifier as per the
installation chapter.
Confirm that the protocol has been activated in the humidifier
software: main menu>0335>configuration>Comms menu>
BACnet MSTP Specific:
Check baud rate . Modifying bps may be necessary for some BMS
networks.
Ensure BACnet Workstation/BAS can handle BACnet slave devices

Cannot read data
from
object/parameter

Carefully ensure that addresses are mapped correctly. A single
incorrect address may cause loss of communication or faults for an
entire chain of humidifiers.

Check data type, some network controllers default to integer or
binary values depending on variable type.

Only some
objects/parameters
report data.

Check the baud rate being used on the BMS network. Use of faster
baud rates may assist.
Check the polling rate being used. High polling rates can interrupt
responses from the previous poll of data causing incomplete data
transfer. A recommended polling rate is once per minute.

Humidifier will not
respond to set
point/sensor
values/ demand
values written over
BACnet/LonWorks.

Check that humidifier is configured for automation system.
Refer to the "Control Signal Settings" section for your humidifier
model.
If the setting is "Analog" the humidifier will look for a control signal on
the low voltage terminal strip only.

Table 9: General Troubleshooting

BACnet & LONWORKS Supplemental Install Manual | 22

Humidifier will not
respond to
hardwired controls.

Check that humidifier is configured for "Analog" control. Refer to the
"Control Signal Settings" section for your humidifier model. If the
setting is "BACnet" or other, the humidifier will look for a control
value to be written over that medium.

Intermittent
Communications

Check wire type and run length. Wire type should be 18 – 24 AWG,
shielded twisted pair wire with 120 ohm characteristic impedance.
Chains should generally not exceed 2000 feet total length.

Look for wire runs in close proximity to equipment generating
significant electrical noise (such as VFD's, medical equipment, X-ray
machinery, servers, etc).

Check that wire shield is terminated at one end only. Terminations
at both ends cause shield to conduct electricity and can generate
noise.

Confirm correct polarity of conductors at each device. This problem
can be the result of Net+ and Net- terminals being crossed.

Check BACnet Device Instance, LonWorks addressing for conflicts
with any device. Each device on the network must have a unique
address. Devices (humidifiers or otherwise) cannot share addresses.

Invalid data

Check BACnet/LonWorks addresses for conflicts. Each device on the
network must have a unique address. Devices (humidifiers or
otherwise) cannot share addresses.

More variables or
additional
information is
required from the
humidifier.

Contact Nortec Technical Services for additional support.

BACnet MSTP:
Cannot pass data to
controller.
Humidifier does not
pass token

Isolate chain and try only Humidifier.
Embedded BACnet MSTP functions as a slave device and cannot be
setup as a Master. Ensure BACnet Workstation/BAS can handle
BACnet slave devices. If not possible, consider the BTL option for
BACnet MSTP if problem persists. BTL option for BACnet MSTP will
function as a Master device.

23 | BACnet & LONWORKS Supplemental Install Manual

APPENDIX A

Switch

A8

A7

A6

A5

A4

A3

A2

A1

Setting

Off

On

Off

Off

On

On

On

Off

Binary 0 1 0 0 1 1 1 0

Exponential Meaning

27 x 0

26 x 1

25 x 0

24 x 0

23 x 1

22 x 1

21 x 1

20 x 0

Simplified Meaning

128 x 0

64 x 1

32 x 0

16 x 0

8 x 1

4 x 1

2 x 1

1 x 0

Numerical Meaning

0

64 0 0 8 4 2 0

Result

64 + 8 + 4 + 2 = 78

Value

A8

A7

A6

A5

A4

A3

A2

A1

0 (Auto)*

Off

Off

Off

Off

Off

Off

Off

Off 1 Off

Off

Off

Off

Off

Off

Off

On

10

Off

Off

Off

Off

On

Off

On

Off

25

Off

Off

Off

On

On

Off

Off

On

40

Off

Off

On

Off

On

Off

Off

Off

50

Off

Off

On

On

Off

Off

On

Off

75

Off

On

Off

Off

On

Off

On

On

78

Off

On

Off

Off

On

On

On

Off

100

Off

On

On

Off

Off

Off

On

Off

125

Off

On

On

On

On

On

Off

On

127

Off

On

On

On

On

On

On

On

Table 10: Converting Numbers to Binary

Table 11: Common Settings for Addressing - BTL BACnet MSTP

* Auto uses the value in the configuration file.

BACnet & LONWORKS Supplemental Install Manual | 24

Table 12: Common Settings – Baud rate BTL BACnet MS/TP

Setting

B4

B3

B2

B1

Auto*

Off

Off

Off

Off

110

Off

Off

Off

On

300

Off

Off

On

Off

600

Off

Off

On

On

1200

Off

On

Off

Off

2400

Off

On

Off

On

4800

Off

On

On

Off

9600

Off

On

On

On

19200

On

Off

Off

Off

20833

On

Off

Off

On

28800

On

Off

On

Off

38400

On

Off

On

On

57600

On

On

Off

Off

76800

On

On

Off

On

115200

On

On

On

Off

* Auto baud is only supported for BACnet MSTP

25 | BACnet & LONWORKS Supplemental Install Manual

APPENDIX B

Parameter Name

Description

SNVT

#

SNVT

Range

NV

Index

R/W

Details

nviDRHDem_A1

Write RH or
Demand signal
value to control
channel 1 for
cylinder A

81

Lev_percent

0 - 100

23

W

Requires LonWorks
to be enabled.
For most common
configurations, this
is the primary
control signal

nviDRHDem_A2

Write RH or
Demand signal
value to control
channel 2 for
cylinder A

81

Lev_percent

0 - 100

24

W

Requires LonWorks
to be enabled.

nviDRHDem_B1

Write RH or
Demand signal
value to control
channel 1 for
cylinder B

81

Lev_percent

0 - 100

33

W

Requires LonWorks
to be enabled.
Only applies to NH­EL-150 and NH-EL­200 with dual
channel control
enabled

nviDRHDem_B2

Write RH or
Demand signal
value to control
channel 2 for
cylinder B

81

Lev_percent

0 - 100

34

W

Requires LonWorks
to be enabled.
Only applies to NH­EL-150 and NH-EL­200 with cylinders
dual channel
control enabled and
cylinders in
independent
operation mode

nviManCapacity_A

Sets a manual
capacity limit
restriction for
cylinder A

81

Lev_percent

0 - 100

15

W

Limits output to
percentage of total
cylinder capacity
(for single cylinder)
or for cylinder A
(NH-EL-150 and
NH-EL-200 models
only)

nviManCapacity_B

Sets a manual
capacity limit
restriction for
cylinder B (if
present)

81

Lev_percent

0 - 100

30

W

Limits output to
percentage capacity
for cylinder B (NH­EL-150 and NH-EL­200 models only)

nviBMStimeout

BMS timeout
for Modbus and
BACnet

107

SNVT_time_
sec

0 - 300

5

W

It is recommend to
not change the
value from the
factory default
(300)

nviDisable

Remotely disable
steam production
for the unit

95

Switch

0 or 1

44

W

0 = Idle/Humidify
1 = Disabled

Table 13: Parameters

BACnet & LONWORKS Supplemental Install Manual | 26

nviSetPoint_A1

Writes the desired
space setpoint for
control channel 1
for cylinder A

81

Lev_percent

0 - 95

21

W

Use only when
sending RH values
to Dinput_A1.
Use only when
nviCtrlMode (3) is
set to RHp or RHpi
For most common
configurations this
is the primary space
setpoint

nviSetPoint_A2

Writes the desired
space setpoint for
control channel 2
for cylinder A

81

Lev_percent

10 - 95

22

W

Use only when
sending RH value to
Dinput_A2 with dual
channel control
enabled

nviSetPoint_B1

Writes the desired
space setpoint for
control channel 1
for cylinder B

81

Lev_percent

0 - 95

36

W

Use only with NH­EL-150 and NH-EL­200 models when
sending RH value to
Dinput_B1 and
cylinders are in
independent
operation mode

nviSetPoint_B2

Writes the desired
space setpoint for
control channel 2
for cylinder B

81

Lev_percent

10 - 95

37

W

Use only with NH­EL-150 and NH-EL­200 models when
sending RH value to
Dinput_B2 with
dual channel
control enabled and
cylinders are in
independent
operation mode

nviSigSource

Selects signal
source to control
unit

81

Lev_percent

0 - 4

2

W

0 = Analog
1 = Modbus
2 = BACnet/IP
3 = BACnet/MS
4 = LonWorks

nviCtrlMode

Selects method to
control unit

81

Lev_percent

1 - 3

3

W

1 = Demand
2 = RH P
3 = RH PI

nviCtrlChannel

Selects method to
control channels

81

Lev_percent

0 - 1

4

W

0 = Single Channel
1 = Dual Channel

nvoRHDem_A1

Displays channel 1
demand for
cylinder A

81

Lev_percent

0 - 100

12

R

Displays channel 1
demand/sensed RH
as a percentage of
cylinder capacity for
cylinder A

nvoRHDem_A2

Displays channel 2
demand for
cylinder A

81

Lev_percent

0 - 100

13

R

Displays channel 2
demand/sensed RH
as a percentage of
cylinder capacity for
cylinder A

nvoRHDem_B1

Displays channel 1
demand for
cylinder B

81

Lev_percent

0 - 100

27

R

Displays channel 1
demand/sensed RH
as a percentage of
cylinder capacity for
cylinder B (NH-EL­150 and NH-EL-200
models only)

27 | BACnet & LONWORKS Supplemental Install Manual

nvoRHDem_B2

Displays channel 2
demand for
cylinder B

81

Lev_percent

0 - 100

28

R

Displays channel 2
demand/sensed RH
as a percentage of
cylinder capacity for
cylinder B (NH-EL­150 and NH-EL-200
models only)

nvoBlowerAct_A

Reads the status
of the blower pack
for cylinder A

95

Switch

0 or 1

46

R

0 = Open
1 = Closed

nvoBlowerAct_B

Reads the status
of the blower pack
for cylinder B

95

Switch

0 or 1

49

R

0 = Open
1 = Closed

nvoFanAct_A

Indicates if air
handle or furnace
is activated for
cylinder A

95

Switch

0 or 1

47

R

0 = Not Activated
1 = Activated

nvoFanAct_B

Indicates if air
handle or furnace
is activated for
cylinder B

95

Switch

0 or 1

50

R

0 = Not Activated
1 = Activated

nvoFault

Reads the status
of a fault on the
unit

95

Switch

0 or 1

42

R

0 = No Fault
1 = Fault

nvoService

Reads the status
of a service
request on the unit

95

Switch

0 or 1

41

R

0 = No Service
Required
1 = Service
Required

nvoStatusCylA

Reads the status
of the unit for
cylinder A

81

Lev_percent

0 - 9

1

R

0 = Humidifying
1 = Idle
2 = Idle Drain
3 = Keepwarm
4 = Filling
5 = Draining
6 = Disabled
7 = Safety Loop
8 = Warning
9 = Fault
10 = blower pack

nvoStatusCylB

Reads the status
of the unit for
cylinder B

95

Switch

0 - 9

N/A

R

0 = Humidifying
1 = Idle
2 = Idle Drain
3 = Keepwarm
4 = Filling
5 = Draining
6 = Disabled
7 = Safety Loop
8 = Warning
9 = Fault
10 = blower pack

nvoSysDem_A

Reads the demand
for cylinder A

81

Lev_percent

0 –

100

14

R

Demand Mode:
Summation of
Input_A1 and
Input_A2
RH Mode:
PID calculation

BACnet & LONWORKS Supplemental Install Manual | 28

nvoSysDem_B

Reads the demand
for cylinder B

81

Lev_percent

0 –

100

29

R

Demand Mode:
Summation of
Input_B1 and
Input_B2
RH Mode:
PID calculation

nvoSecurity_A

Reads the status
of the safety loop
for cylinder A

95

Switch

0 or 1

45

R

0 = Open
1 = Closed

nvoSecurity_B

Reads the status
of the safety loop
for cylinder B

95

Switch

0 or 1

48

R

0 = Open
1 = Closed

nvoHourOpt_A

Reads operating
time for cylinder A

124

SNVT_time_
hour

0 -

5000

10

R

Displays the total
time (hrs) cylinder A
has been running
since last reset

nvoHourOpt_B

Reads operating
time for cylinder B

124

SNVT_time_
hour

0 -

5000

25

R

Displays the total
time (hrs) cylinder B
has been running
since last reset

nvoHourWeight_A

Reads the
weighted time for
cylinder A

124

SNVT_time_
hour

0 -

5000

11

R

An equated run
time (hrs) based on
Run_Time_A x
System_Demand_A

nvoHourWeight_B

Reads the
weighted time for
cylinder B

124

SNVT_time_
hour

0 -

5000

26

R

An equated run
time (hrs) based on
Run_Time_B x
System_Demand_B

29 | BACnet & LONWORKS Supplemental Install Manual

Warranty

Nortec Humidity Inc. and/or Nortec Humidity 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.

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.

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.

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.

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.

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.

THE COMPANY makes no warranty and assumes no liability whatsoever for damage resulting
from freezing of the humidifier, supply lines, drain lines, or steam distribution systems.

THE COMPANY retains the right to change the design, specification and performance criteria of
its products without notice or obligation.

BACnet & LONWORKS Supplemental Install Manual | 30



U.S.A.

826 Proctor Avenue
Ogdensburg, NY 13669

CANADA

2740 Fenton Road
Ottawa, Ontario K1T 3T7

TEL: 1.866.NORTEC1
FAX: [phone]

EMAIL: [e-mail]
WEBSITE: www.humidity.com