Installation / Operation Instruction Manual

ManualsBrandsBradford White ManualsCommercialCommander Series ® Atmospheric Vent (UCG) - Ultra Low NOx with ICON HD ® System and BMS Integration (no draft diverter models)

Building Management System (BMS)

The water heater can be equipped with a gateway kit that will facilitate a Building Management System (BMS) connection

to Modbus or Bacnet

. This kit is sold separately and is not factory installed. A full installation, operation, and

troubleshooting manual is provided with the gateway kit.

AUTION

Before beginning any Troubleshooting operations listed below, please note that the gateway kit and BMS

may need to be disconnected from the heater. Please ensure this has been completed before proceeding

with any troubleshooting operation that may be impacted by settings in the BMS.

BMS Mapping

Map Descriptor

Name

Modbus

Read/Write

BACnet

Object

Note

Demand source 00006 Read 001

Current demand source:

0 = Unknown

1 = No source demand

2 = CH

3 = DHW

4 = Lead Lag slave

5 = Lead Lag master

6 = CH frost protection

7 = DHW frost protection

8 = No demand due to burner switch (register 199) turned off

9 = DHW storage

10 = Reserved

11 = Warm weather shutdown

12 = Hot standby

Firing rate 00008 Read 002 Actual firing rate (% or RPM)

Fan speed 00009 Read 003 RPM

Flame signal 00010 Read 004 0.01V or 0.01 µA precision (0.00-50.00V)

Tank temperature

sensor

00012 Read 005 -40˚-130˚ (0.1˚C precision)

Appliance setpoint 00017 Read 006 -40˚-130˚ (0.1˚C precision)

Burner status 00032 Read 007

0 = Disabled

1 = Locked out

2-3 = Reserved

4 = Anti-short cycle

5 = Unconfigured safety data

6-33 = Reserved

34 = Standby Hold

35 = Standby Delay

Lockout code 00034 Read 008

0 = No lockout

1-4096

Appliance status 00080 Read 009

0 = Unknown

1 = Disabled

2 = Normal

3 = Suspended

DHW priority count 00082 Read 010

Countdown of time when DHW has priority over CH (secs).

Applicable when DHW priority time is enabled.

Burner run time 00130/00131 Read 011 Hours

Controller cycle

count

00142/00145 Read 012 0-999,999

Controller run time 00144/00145 Read 013 Hours

Alarm reason 0035 Read 014

0 = None

1 = Lockout

2 = Alert

3 = Other

DHW setpoint 0453 Read/Write 015 40˚-130˚ (0.1˚C precision)