TSBC Instruction Manual Page 9 of 48
Product Features
Single Boiler Control
Display Shows: Outlet Sensor & Local SP Mode
Boiler Outlet
Temperature
(
BO
,
BC
)
Boiler Inlet
Temperature
(
BI
,
BC
)
RJ
11
,
RS
-
485
Communication
Peer
-
To
-
Peer Network
for Modulating Lead
/
Lag
Or
Modbus Network
for Touch Screen or EMS Monitoring
Return
Water
Outside Air
Temperature
(
O
+
,
O
-
)
Boiler
Circulator
System
Circulator
EMS System Hardwired Connections
Lockout Indicator
(
LO
)
Soft Alarm
(
SO
)
Remote On
/
Off
(
Enable
) (
RO
)
DHW
Override
Switch
(
DP
)
System
Supply Water
Domestic Hot
Water
(
DHW
)
Supply
POWER
Outlet Sensor & Local SP Mode Application Diagram
(Showing Relevant Connections)
Features
Setpoints
The operator selects the setpoint and on and off points
from the LCD display.
Modulation Rate Control
Boiler automatically modulates to maintain the boiler
outlet temperature at setpoint.
Call for Heat
The Call For Heat is determined by the setpoint, on
and off points and boiler outlet temperature.
Options
Outside Air Reset
If enabled, the Outside Air Sensor will automatically
adjusted the setpoint.
Warm Weather Shutdown (WWSD)
If enabled, the WWSD will disable a boiler start when
outside air temperature is above a Warm Weather
Shutdown (WWSD) setpoint.
Domestic Hot Water Priority (DHWP)
If enabled, the DHWP will adjust the setpoint to satisfy
the DHWP setpoint when a DHWP input (DP) is
energized.
Selecting This Control Mode
To select Outlet Sensor & Local SP Mode set the following
parameters:
System Configuration Menu:
Remote Control = “No”
Remote System Temperature Sensor = “No”
Remote On / Off (Enable) Input (RO) = Closed (Jumper (RO)
to (C) )
If the Remote On / Off (Enable) (RO) input is opened, the Call
For Heat Relay (CH) is de-energized.
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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