Bacnet Or Lonworks Protocols; Wiring And Set-Up; Connect The Bms Cable; Verify Bms/Heatnet Operation - RBI Futera III Manual
Finned copper tube gas boilers & water heaters 500 to 4,000 btuh input
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Also See for Futera III:
- Installation and operating instructions manual (44 pages) ,
- Installation & operation manual (40 pages) ,
- Control manual (128 pages)
Table of Contents
3
Multiple boilers: BMS operation
BACnet or LonWorks protocols
1.
Install the correct protocessor to adapt to building manage-
ment systems using BACnet or LonWorks protocols. Each
boiler must have a protocessor if the BMS is to operate with
direct control of each boiler (option 2, page 13).
2.
The protocessor translates the BACnet or LonWorks input
to the MODBUS protocol for compatibility with the Heat-
Net controls.
Wiring and set-up
PUMPS REQUIRE RELAYS OR STARTERS
— DO NOT
directly operate a pump using the
HeatNet contacts. Use these contacts only to
operate pump relay or starter coils.
1.
Wire and set up the master boiler and member boilers ex-
actly as for HeatNet modulation — local control applica-
tions. See section beginning on page 8.
2.
ALL control parameters must be set up just as for the local
control method.
3.
The ONLY difference in setup is the termination DIP
switch settings. Use the settings for MODBUS communi-
cations given in Table 2, page 8.
4.
Connect communications cables (RJ45 or shield-wire
cables) between the control communications boards as for
the local control method.
5.
Verify network operation BEFORE connecting the build-
ing management system.
Connect the BMS cable
1.
DO NOT connect the building management system cable
until the boiler network has been proven to operate inde-
pendently. The system is designed to revert to local con-
trol by the master boiler should communications with the
building management system be lost.
2.
Turn off power to the master boiler.
3.
See
Figure 9, page 28. Connect an RJ45 cable or shielded
cable to the corresponding input port on the MASTER
boiler HeatNet board.
Verify BMS/HeatNet operation
1.
Turn on power to the master boiler.
2.
Allow the master boiler to initialize.
3.
Verify operation with the building management system.
14
Finned copper tube gas boilers & water heaters – Control manual
Table 6
30001 Unsigned Boilers Running
30002 Unsigned Modulation (% BTU Load)
30003
30004
30005
30006
30007
30008
30009 Unsigned Clock – Month
30010 Unsigned Clock – Day
30011 Unsigned Clock – Year
30012 Unsigned Clock – Hours
30013 Unsigned Clock – Minutes
30014 Unsigned Clock – Seconds
30015 Unsigned Clock – Day of Week
30016 –
30047
30048 –
30079
(cont.)
MODBUS input (read-only) registers
Data
Description
Type
Signed Header / System Temperature
Signed Supply Temperature
Signed Return Temperature
Signed Outside Air Temperature
Signed Spare Input 1
Signed Spare Input 2
Unsigned Boilers 1 – 16 status flag (32-bit) registers. The
upper 16-bits of each 32-bit register is stored at
odd numbered addresses 30016 –30046. The
lower 16-bits of each 32-bit register is stored at
even numbered addresses 30017 – 30047.
Unsigned Boilers 1 – 16 runtime (32-bit) registers. The up-
per 16-bits of each 32-bit register is stored at odd
numbered addresses 30048 – 30078. The lower
16-bits of each 32-bit register is stored at even
numbered addresses 30049 – 30079.
When the upper and lower registers are com-
bined they form a 32-bit unsigned integer that is
the number of seconds that the boiler has been
running. For instance: (((Register 29) * 65536) +
Register 30) = Boiler 1 runtime in seconds.
Boiler 1 is the master boiler. Boilers 2 – 16 are
member boilers.
Valid Values/Range
0 – 16
0 – 100
32 – 250 °F
32 – 250 °F
32 – 250 °F
-40 – 250 °F
-32768 to 32767
-32768 to 32767
0 – 11
1 – 31
0 – 99
0 – 23
0 – 59
0 – 59
1 – Monday 7 –
Sunday
See the Boiler Status
Flags Table Below
0 – 4294967295
seconds
P/N HN-IOM-1 82-0331 Copyright 2009 Mestek, Inc.
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