TSBC Instruction Manual Page 10 of 48
Product Features
Multiple Boiler Control
Display Shows: Remote Sensor & Local SP Mode
Domestic Hot
Water Priority
(
DP
)
DHW Override
Switch
(
DP
)
System
Supply Water
Return
Water
Connects to
Up to Eight
Boilers
RJ
11
,
RS
485
Peer to Peer
Network
Remote System
Temperature
(
R
+
,
R
-
)
Outside Air
Temperature
(
O
+
,
O
-
)
Boiler
Circulator
System
Circulator
Boiler
Circulator
Boiler
Circulator
Remote System
Temperature
(
R
+
,
R
-
)
EMS System Hardwired
Connections
Lockout Indicator
(
LO
)
Soft Alarm
(
SO
)
Remote On
/
Off
(
Enable
) (
RO
)
Wired to Each
TSBC controller
Domestic Hot Water
(
DHW
)
Supply
Outside Air
Temperature
(
O
+
,
O
-
)
Boiler Outlet
Temperature
(
BO
,
BC
)
Boiler Inlet
Temperature
(
BI
,
BC
)
Boiler Running
ALAR M
POWER
Boiler Running
ALAR M
POWER
Boiler Running
ALAR M
POWER
Remote Sensor & Local SP Mode Application Diagram
(Showing relevant connections for 3 boilers, typical for up to 8)
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 Remote
System Temperature (RST) at setpoint.
Call for Heat
The Call for Heat is determined by setpoint, on and off
points and RST. If a Peer-To-Peer network is activated, a
Call for Heat is also initiated when the Lead boiler
modulation rate % is above an adjustable High Fire Rate
Limit (parameter 37) for too long a time.
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
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 contact input (DP) is
closed. When multiple boilers monitor the DHWP input, an
isolated contact is required for each boiler.
Selecting This Control Mode
To select Remote Sensor & Local SP Mode set the
following parameters:
System Configuration Menu:
Remote Control = “No”
Remote System Temperature Sensor = Control
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.
If the Remote System Temperature Sensor (RST) fails, the
control mode is automatically switched to Outlet Sensor &
Local SP Mode.
Peer-To-Peer Network
To establish a Peer-To-Peer network follow the procedure
provided on page 25.
If the Peer-To-Peer network is activated the Lead boiler
controls modulation rate and Call for Heat for all networked
boilers. Up to 8 networked boilers are fired in “Unison” (all
at the same modulation rate).
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