Thermal Solutions EVS SERIES, Installation, Operating And Service Instructions

Page: 76 / 92

76
IX. Thermal Solutions Boiler Control™ (TSBC™)
A.
INTRODUCTION -
The intent of this section is to briefly summarize the controllers capabilities, familiarize the user with
its basic features and to list the factory supplied default settings. Read the additionally supplied Factory Instruction Manual
for the TSBC to learn more about the controllers features and capabilities.
1.
Thermal Solutions Boiler Control™ Overview
The Thermal Solutions Boiler Control ™ (TSBC ™ ) is a complete boiler monitoring and automation system. The
TSBC ™ provides advanced boiler modulation, operating control, diagnostics, multiple boiler lead-lag and auxiliary
device control. The TSBC ™ provides advanced control features in an easy to use package.
2. Flexible, Field Selectable Control
Control modes, water system, boiler auxiliary
and modulating lead/lag control features are
menu selectable without the need for external
programmers, lap tops or down loads. Every
boiler is shipped with factory defaults that make
field menu selections unnecessary unless you are
applying additional control features.
3. Boiler Monitoring and Diagnostic Displays
The TSBC ™ 's two line by sixteen character LCD
display may be used for monitoring boiler inlet and
outlet, remote system and outside air temperatures,
modulation rate setpoint and modulating percent
and mixing valve demand percent. Additionally,
the display automatically presents boiler sequence
messages, alarms, hold and lockout messages. A
diagnostic menu is included that provides the last
10 alarm messages and boiler inlet temperature
alarm history. Boiler inlet temperature alarm
history includes time and date, the lowest inlet
temperature reached and the amount of time the
water temperature dropped below the alarm setpoint.
4.
Modulation Rate and On/Off Modes
The TSBC ™ may simply control boiler modulation
and on/off output based on the boiler water outlet
temperature and an operator adjusted setpoint.
However, using parameter selections, the TSBC™
allows the boiler modulation and on/off output to
respond to remote system water and outside air
temperatures, Domestic Hot Water Priority (DHWP)
input or Energy Domestic Hot Water Priority (EMS)
modulation rate demand, remote setpoint or remote
start/stop commands. Parameter selections of
remote system water temperature and remote mode
determine the choice of one of six different control
modes.
5.
Advanced Availability
The above control modes are menu selectable
options. However, if a selected sensor fails, the
TSBC ™ automatically changes to a control mode
that will allow continued automatic operation of
the boiler. For example, in the event of a remote
system temperature sensor failure, the TSBC ™ will
automatically switch to boiler outlet temperature
sensor based control.
6. Outdoor Air Reset
When selected the modulation rate setpoint
is automatically adjusted based on outside air
temperature. Outdoor air "reset" setpoint saves
fuel by adjusting the water temperature of a heating
boiler lower as the outside air temperature increases.
7. Warm Weather Shutdown (WWSD)
Some boilers are used primarily for heating
buildings, and the boilers can be automatically
shutdown when the outdoor air temperature is warm.
When outside air temperature is above the WWSD
setpoint, this function will prevent the boiler, boiler
pump and/or the system pump from starting.
8.
Domestic Hot Water Priority (DHWP)
Some boilers are used primarily for building space
heating, but also provide heat for the domestic
hot water users. When the outdoor temperature is
warm, the outdoor reset setpoint may drop lower
than a desirable domestic hot water temperature.
When enabled and a DHWP contact input is
detected, the hot water setpoint is adjusted to be
greater than a field adjustable DHWP Setpoint.
9.
Water Side Control Outputs
In order to maximize the life and availability of a
hot water systems it may be desirable to automate
mixing valves, boiler pumps, system pumps, and
standby system pumps. The TSBC ™ makes this
type of automation totally integrated and cost
effective. The control of these devices is field
selectable through simple yes/no menu selections.
10.
Combustion Air Side Control Outputs
Boiler room Combustion air dampers (fresh air
dampers) and Vent Inducer control outputs are field
selectable options.
11.
Peer-To-Peer Network
The TSBC ™ includes state-of-the-art modulating
lead-lag sequencer for up to eight (8) boilers capable
of auto rotation, outdoor reset and peer-to-peer
communication. The peer-to-peer network is truly
"plug and play". Communication is activated by
simply connecting a RJ11 telephone line between
boilers. The TSBC ™ provides precise boiler
coordination by sequencing boilers based on both