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BCS6000C-9
A. GENERAL INFORMATION
The Hauck Burner Control System (BCS) provides burner management and temperature control
of a single pilot ignited burner firing on natural gas, oil, or liquid propane (LP). The spark
ignited, gas fired pilot is interrupted after the main burner flame has been established. Flame
supervision is provided by a Honeywell RM7800 series flame relay combined with an amplifier
module and one or two ultra-violet (UV) flame detectors.
A Programmable Logic Controller (PLC) supervises burner operation and provides three
process control loops for material temperature, stack temperature, dryer draft. The PLC is
coupled to a touchscreen display to supply the operator with system status and fault
annunciation.
Two Hauck P1161 series instruments are provided for temperature indication and over-
temperature protection. The thermocouple of the MATERIAL TEMPERATURE instrument is
positioned to read the temperature of the material as it exits the dryer, while the STACK
TEMPERATURE instrument’s thermocouple senses the temperature of the exhaust gases. The
instruments display the process temperature and provide temperature inputs to the PLC which,
in turn, is electronically linked to the burner control motors to automatically adjust the burner
firing rate and maintain process temperature near setpoint. The Operator can assign control of
the burner to either thermocouple.
The alarm contact of the STACK TEMPERATURE instrument is used to shut down the burner if
the preset high temperature limit is exceeded. The PLC also provides high stack and material
temperature alarms, which drive the burner to low fire if their alarm setpoints are exceeded.
WARNING
This equipment is potentially dangerous with the possibility of serious personal injury
and property damage. Hauck Manufacturing Company recommends the use of flame
supervisory equipment and fuel safety shutoff valves. Furthermore, Hauck urges rigid
adherence to National Fire Protection Association (NFPA) standards and insurance
underwriter’s requirements. Operation and regular preventative maintenance of this
equipment should be performed only by properly trained and qualified personnel.
Annual review and upgrading of safety equipment is recommended.
CAUTION
The STACK alarm setpoint is factory set at 400°F (240°C). If the system is
equipped with a fabric dust collector (baghouse), consult the manufacturer
for recommended baghouse temperature limitations. Refer to Appendix E
for entering the desired alarm setpoint.
NOTE
High temperature limits will not prevent baghouse fires. They will, when
properly installed and adjusted, shut off the burner when a given
temperature setpoint is exceeded. Outside factors such as chemicals, bag
contamination or other ignition sources are beyond the control of the burner
management system.
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