NTI 420011337400_IOM_BMS_GW BACnet BMS Gateway Instruction Manual
- August 6, 2024
- NTI
Table of Contents
NTI 420011337400_IOM_BMS_GW BACnet BMS Gateway Instruction Manual
HAZARD SYMBOLS AND DEFINITIONS
Danger Sign: Indicates a hazardous situation which, if not avoided, will
result in serious injury or death.
Warning Sign: Indicates a hazardous situation which, if not avoided, could
result in serious injury or death.
Caution Sign plus Safety Alert Symbol: Indicates a hazardous situation which,
if not avoided, could result in minor or moderate injury.
Caution Sign without Safety Alert Symbol: Indicates a hazardous situation
which, if not avoided, could result in property damage.
Notice Sign: Indicates a hazardous situation which, if not avoided, could
result in property damage.
This device must be installed by a licensed and trained technician, or the Warranty is Void. Failure to properly install this unit may result in property damage, serious injury to occupants, or possibly death.
INTRODUCTION
System Description
The NTI BMS Gateway BACnet™ provides an interface between NTI TFTN series boilers, up to 8 boilers maximum and a building management system that uses BACnet™ protocol for communication. IMPORTANT NOTE : To connect multiple boilers using a single BMS Gateway, the boilers MUST be configured in a cascade arrangement. The gateway supports BACnet MS/TP with RS485 electrical interface, and BACnet/IP on Ethernet CAT5 cabling. The gateway comprises two main components: an eBUS2-Modbus gateway to translate Ariston proprietary eBUS2 protocol to open Modbus protocol; then a ProtoNode FPC-N54 gateway to translate Modbus to BACnet™. Refer to the ProtoNode FPC-N54 Start-up Guide (NTI part # 420011338100) for more details. IMPORTANT NOTE : For multiple boilers that are NOT configured in a cascade arrangement, ONE BMS Gateway is required PER BOILER.
General Installation Requirements
The installation of your NTI BMS Gateway must conform to the requirements of this manual, your local authority, and the Canadian Electrical Code CSA 22.1 and/or NFPA 70 National Electrical Code®. IMPORTANT NOTE : The installer MUST have access to a personal computer (PC) running Windows 10 or later, a web browser (Google Chrome™ is recommended), and a CAT 5 or CAT 6 Ethernet patch cord to connect to the service port of the ProtoNode.
Read and understand this entire document prior to proceeding with the installation of the NTI BMS Gateway. Failure to follow the instructions outlined in this document will result in property damage, serious injury or death.
User Responsibilities
The NTI BMS Gateway must be installed and serviced by a qualified installer or service technician. The product is designed for use with boiler equipment and may only be serviced by authorized competent personnel.
Installer Responsibilities
As the installing technician it is your responsibility to ensure the installation is performed in accordance with this instruction manual as well as any applicable local or National installation codes. It is also your responsibility to inform the User/Owner of the “User Responsibilities”. Failure to follow this warning could result in fire, serious injury, or death.
Dimensions
LOCATION
In all cases, the NTI BMS Gateway must be installed indoors in a dry location where the ambient temperature must be maintained between 0℃ [32℉] and 60℃ [140℉]. All components must be protected from dripping, spraying water, or rain during operation and servicing. Consider the proximity of the target boiler(s) and electrical supply when determining the best location.
Water damaged components must be replaced immediately with new factory- approved components as failure to do so may result in fire, serious injury, or death.
Minimum Installation Clearances
MOUNTNG INSTRUCTIONS
The NTI BMS Gateway is provided with integral mounting brackets. Refer to Figure 3-1 for instructions and illustrations on wall mounting. Mounting hardware must be field supplied.
Figure 3-1 Mounting Instructions
- Mounting is permitted in any orientation, vertical on a wall (as illustrated below) is recommended.
- Use #8 or #10 pan head screws of appropriate length.
- Place gateway in selected location on clean, dry surface.
- Mark top hole locations. Be sure to mark the upper narrow opening of the keyhole slot.
- If masonry or wallboard surface, pre-drill pilot holes for anchors, and insert anchors.
- Secure gateway to the surface with screws. Install top two screws first.
- Mark bottom hole locations. Install anchors if needed, and secure gateway to surface.
FIELD WIRING
All wiring must be in accordance with the Canadian Electrical code CSA C22.1 and/or the National Electrical Code ANSI/NFPA 70, local codes, and this manual. NOTICE: the gateway must be electrically grounded. The electrical rating of the NTI BMS Gateway is 120Va.c./1 Phase/ 60 Hz /12W.
Power Supply – the BMS gateway must be powered using a single phase 120Va.c. power supply that is fused (or protected via a circuit breaker) to allow a maximum of 15 Amps. Failure to follow these instructions may result in component failure, serious injury or death. The BMS Gateway is factory supplied with a power cord for connection to the power source. IMPORTANT : The installer MUST provide a local convenience outlet.
Avoid Shocks – To Avoid Electrical Shock, turn off electrical power to the gateway prior to opening the enclosure. Ensure the power remains off while any wiring connections are being made. Failure to follow these instructions may result in component failure, serious injury or death.
Wiring Connections
All field wiring connections to the gateway are made by removing the enclosure
cover to access the internal connectors; see Figure 4-1. Field wiring enters
the enclosure through holes located on the bottom (when the gateway is mounted
as recommended) of the enclosure. Field wiring connections are to be installed
in accordance with instructions provided in Figures 4-1 and 4-2. The NTI BMS
Gateway is factory wired so that only the external wiring connections to
a) the target boiler(s); and b) the BMS, as illustrated in Figure 4-2; are
necessary.
NOTE : protect the wires from strain and chafing by using suitable strain-relief when passing the wiring through the gateway enclosure.
Wire Protection – When passing wiring through the gateway enclosure, the installer must use wire strain relief suitable for securing the wiring and preventing chafing. Failure to follow instructions may result in component failure, serious injury or death.
Labeling – Label all wires prior to disconnecting them when servicing controls. Wiring errors can cause improper and dangerous operation. Failure to follow instructions may result in property damage or personal injury.
INTERNAL WIRING
Factory wiring
As noted above in section 4.1 above, the NTI BMS Gateway requires only the external wiring connections to: a) 120Va.c. power; b) the target boiler(s); and c) the BMS.
Fusing
External fusing: The NTI BMS Gateway incorporates 2 user replaceable fuses: 1) 250V 1 Amp fast-acting 3AG glass cartridge fuse NTI part #TBD; 2) 250V 1 Amp time-delay 5mmx20mm glass cartridge fuse NTI part #TBD.
****Disconnect all power sources before replacing any fuse. Failure to do so could result in serious injury or death.
SETUP & COMMISSIONING
Initial procedures
Immediately following power-up of the gateway, the system will go through a process of “Device Discovery”, where the devices connected to the boiler are discovered. This is followed by an “Initializing” process.
Enable external control of boiler(s)
To allow control of the boiler (or cascade) by the BMS, boiler parameter 42.0.0 must be set correctly. For a cascade, the setting must be made in the Manager boiler. From the Home screen, select Setup→Tech Menu→BMS Control→Control Mode. Then choose External controller temp for remote temperature setpoint, or External controller power for remote direct burner modulation. For a more details, refer to the TFTN Installation and Operation Manual (IOM). NOTE : If BMS control of the boiler(s) is Disabled, the gateway will still read and transmit data points from the boiler(s), but control from the BMS will be ignored. NOTE : BMS setpoint and individual zone fixed outlet temperature setpoints can be written even if BMS Control Mode is Disabled. NOTE : No software configuration of the eBUS2-MODBUS gateway is required. The selection of the boiler’s Control Mode (42.0.0) setting impacts the level of control the BMS system has over the boiler as follows:
Control Mode (42.0.0) = Disabled
The gateway reads and transmits data points from the boiler, including zone
fixed outlet temperature setpoints and CH enable/disable, while the boiler
maintains control of the burner power and overall target outlet temperature.
NOTE : with Control Mode disabled, the boiler retains functionality of
its internal 3-zone controller.
Control Mode (42.0.0) = 0-10V (Power/Temp)
The gateway reads and transmits data points from the boiler, including CH
enable/disable, while the control of the burner power or overall target outlet
temperature is dictated by the magnitude of the external 0-10V signal applied
to the boiler terminals 0-10V IN.
NOTE : with Control Mode = 0-10V (Power/Temp) the boiler’s internal
3-zone controller does NOT function.
Control Mode (42.0.0) = External controller power/temp
The gateway reads and transmits data points from the boiler, including CH
enable/disable and direct control of the burner power or target outlet
temperature.
NOTE : with Control Mode = External controller power/temp the boiler’s
internal 3-zone controller does NOT function.
Select BMS protocol
The installer must select the appropriate BACnet™ protocol type using the built in GUI interface of the ProtoNode. MS/TP and BACnet/IP are supported. The ProtoNode is factory set to use BACnet/IP. Refer to the ProtoNode FPC-N54 Start-up Guide for more details. The procedure consists of the following steps:
Connect PC to ProtoNode
Remove the NTI BMS Gateway cover and connect the PC to the ProtoNode using a CAT5 Ethernet patch cord.
Configure PC IP address
The default IP address of the ProtoNode is 192.168.1.24 with netmask 255.255.255.0. Use Windows Control Panel to set the network settings of the PC with a manually entered static IP address on the same logical network as the ProtoNode. For example, use address 192.168.1.11 with netmask 255.255.255.0. Any valid address of the 192.168.1.0/24 subnet, other than 192.168.1.24, is suitable.
Navigate to the login page
Open a browser window and type the ProtoNode IP address 192.168.1.24 in the browser address box. Press Enter and the login page should appear. The default user name is admin, and the password is marked on a label attached to the ProtoNode case.
Select security mode
This is installation specific. If BACnet MS/TP protocol is selected, non- secure HTTP is adequate as a security selection for interacting with the ProtoNode. If BACnet/IP is selected, the local IT or network administrator may need to be consulted. Consult the ProtoNode FPC-N54 Start-up Guide for details.
Select the protocol
After successful login, the main Configuration Parameters page is displayed. Generally there is no need to modify any of the parameters other than the protocol. To select the protocol, enter 1 for BACnet/IP or 2 for BACnet MS/TP in the Protocol Selector box:
After typing the desired choice, click the Submit button to activate the new configuration. A prompt will appear near the top of the page:
Click the System Restart button near the bottom of the page:
Confirm the restart by clicking OK:
Changing the protocol will invalidate the profile, which is indicated near the bottom of the Configuration Parameters page:
Therefore, it is necessary to clear the profile and restart. Click the button near the page bottom to clear profiles and restart:
The page will automatically refresh with no profile available. To rediscover the eBUS2-MODBUS gateway and create a profile, click the Discovery Mode button and confirm the discovery:
Click the OK button to confirm:
During Discovery a progress box appears:
The Discovery progress % is shown near the top of the page:
Select the MS/TP serial Baud rate
Only applies if the selected protocol is MS/TP. Type one of the valid rates (9600/19200/38400/76800) into the box and click Submit, then follow the onscreen instructions:
TROUBLESHOOTING
Refer to the ProtoNode FPC-N54 Start-up Guide for troubleshooting assistance. There are no user configurable settings for the eBUS2-MODBUS gateway. Operation of both the ProtoNode and eBUS2-MODBUS gateway is confirmed by observing the activity of LEDS on the respective devices:
DATAPOINTS
BACnet Object Types:
AI = Analog Input
AV = Analog Value
BI = Binary Input
BV = Binary Value
MI = Multistate Input
MV = Multistate Value
ERRORS
BUILDING MANAGEMENT SYSTEM (BMS) SERVICE
CENTRAL HEATING (CH)
DOMESTIC HOT WATER (DHW)
CASCADE MANAGER
COMMERCIAL BOILER MASTER
HEATING ZONE 1
HEATING ZONE 2
HEATING ZONE 3
HEATING ZONE 4
HEATING ZONE 5
HEATING ZONE 6
SOLAR MANAGER
Error Owner Multistate Values
STATUS CODE
NTI Boilers Inc. 30 Stonegate Dr. Saint John, NB E2H 0A4 Canada
Technical Assistance:
1-800-688-2575
Website: www.ntiboilers.com
Fax: 1-506-432-1135
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