TSBC Instruction Manual Page 13 of 48
Product Features
Energy Management System (EMS) Boiler Control (continued)
Display Shows: Remote Control Mode
RJ
11
,
RS
-
485
Communication
Modbus Network
EMS Monitoring and Control
Remote Firing Rate via Modbus
Remote on / off via Modbus
EMS System
Hardwired Connections
Lockout Indicator ( LO )
Soft Alarm ( SO )
Remote On / Off ( Enable ) ( RO )
Remote Setpoint ( C + , C - )
Boiler Outlet
Temperature
(
BO
,
BC
)
Boiler Inlet
Temperature
(
BI
,
BC
)
Return
Water
Boiler
Circulator
System
Circulator
System
Supply Water
ALAR M
POWER
Remote Control Mode Application Diagram
(Showing relevant connections)
Features
Modulation Rate Control
The Remote Input (C+,C-) or Modbus input sets
modulation rate. The setpoint is ignored.
Call for Heat
The Call For Heat is determined by Remote On/Off
input (RO) or Modbus input. The on and off points are
ignored. The boiler will turn off if the water
temperature increases past the temperature set on the
Operational Temperature Limit.
Options
Outside Air Reset and Domestic Hot Water Priority
input (DP) and Warm Weather Shutdown are ignored.
Selecting This Control Mode
To select Remote Control Mode set the following parameters:
System Configuration Menu:
Remote Control = “Remote Mod”
Remote System Temperature Sensor = Display Only
Local / Remote Input (LR) = Closed (Jumper (LR) to (C) )
When the Local / Remote Input (LR) is open, Remote Input
(C+,C-) is ignored and Remote Sensor & Local SP Mode is
active.
Modbus Network
To establish a Modbus network set the following parameters:
Communication Menu:
Protocol = Modbus
Modbus Address = Give each boiler a unique address.
Baud Rate = Set identical to remote system.
Parity = Set identical to remote system.
Connect all boilers using a RJ11 ended telephone cable.
If the Modbus network is activated the remote system may
monitor and/or control boiler operation. Refer to page 26 for
additional information.
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