Installation / Operation Instruction Manual

Page 49
TO CASCADING
UNITS 3 THRU 8
(TYP)
TO CASCADING
UNITS 3 THRU 8
(TYP)
COM2
C
B
A
Following Boiler
7.F Building Automation
System Connections
These units can be controlled and
monitored through the included Modbus
ports.
Gateway Control (H2354400 Doc# 4236).
Connect the 4-20mA signal from an
external control or building automation
system to terminal block 7 (TB7) in
the control panel. See Figure 33. The
connections are labeled Remote Analog
Input. When making the connections,
follow the polarity designations shown on
the label.
Signals from a Building Automation
System can be connected to the MB2
Modbus connections on the controller.
See Figure 34.
For additional information on setting
up Modbus and other communication
protocols, contact the factory.
TO CASCADING
UNITS 3 THRU 8
(TYP)
TO CASCADING
UNITS 3 THRU 8
(TYP)
COM2
C
B
A
Brute HIGH EFFICIENCY COMMERCIAL BOILERS AND VOLUME WATER HEATERS