ZANTINGH RKB, Operating And Instruction Manual

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Page. 5
LMV5000.EN202001V6
4. SYSTEM COMPONENTS
4.1 Burner component
The burner component is in welded steel-plated housing. Under the burner housing
there’s an air valve section, it controls the air supply to the burner. A servomotor
drives the valves. The load controller or burner controller controls the servomotor.
The combustion air level is measured and monitored using air-pressure switches
(LD2). If you have a burner type TR the pressure switches are located on the upper
side of the burner. If you have a burner type RKB the switches are mounted under
the burner housing. The primary and secondary burner combustion devices are
situated in the cylindrical part of the burner. The flame monitoring device is mounted
on the side of the cylindrical part. The pilot burner is positioned at the centre of the
burner head. The pilot burner includes an electrical ignition. A high-voltage
transformer is included in the burner housing for electrical ignition. The gas supply
connection to a servomotor-driven gas quantity control valve is located under the
cylindrical part of the burners.
4.2 Air fan component
The air fan is positioned under the burner. The air fan supplies the required
combustion air. This air fan has a directly coupled and balanced fan wheel. The fan
wheel is driven by an electromotor. The air fan of a TR burner is directly connected to
the air-valve section. The air van of an RKB burner is separate and stands on the
floor.
The connection is made using a flexible sleeve. Vibration isolators are used when
mounting the air fan on the floor. An electrical circuit in the burner control panel and
the frequency controller provide the variable speed of the electromotor. The air fan
can, therefore, provide the required air quantity based on the measured air quantity.
The standard air fan includes an inlet grid to prevent coming into contact with moving
parts. A plate silencer is provided on the air fan inlet for noise reduction purposes.
Cylindrical noise silencers are available as an option.
4.3 Gas train
The gas train controls the gas supply from the distribution network. Several monitor
and control units are mounted on the gas train to control the burner gas supply.
The maximum supply pressure for the system is indicated on the burner
nameplate.
Shut-off valve (pos. A1)
De shut-off valve (A1) shuts off the gas supply to the burner system in case of:
•
Fire or other emergencies.
•
Maintenance work on the gas train equipment.
•
Leakage of or between parts after the valve.
•
Shutting down the burner system for a long period of time.