2
Regulation
Dependent on fuel, burner size and
requirements, the regulation of air and
fuel is by:
• Two and three stage
The oil side of
dual fuel burners has a
nozzle assemble with two or three
nozzles. A change in firing rate is
effected by opening and closing of
solenoid valves 2 and 3 with the
relevant air volume.
• Sliding two stage
For sliding two stage control, partial
and full load are set positions within
the regulation range. The burner’s
firing rate slides between the two load
points, depending on the heat
demand. Thus there are no sudden
large increases or decreases in the
amount of fuel used.
• Modulation
Modulating burners operate at any
point within the regulation range,
depending on the heat demand.
Reduced capacity at start-up
The burners start at ignition load an
additional pilot line. In this way only a
small amount of gas flows into the
combustion chamber. After a short delay
the burner moves to partial load
operation.
Controlled shut downs from partial
load
Controlled shut down of the burner
always takes place from the partial load
position, thus preventing impact on the
gas main.
Fuel / air ratio
The controlled mixing of fuel and
combustion air varies depending on the
size and type of burner:
Size 30
Burner types RGL and RGMS: Pressure
side air regulation via a compound
regulated control sleeve in the mixing head.
Burner type GL: Pressure side air
regulation via an adjustable control
sleeve in the mixing head for capacity
adjustment.
Sizes 40 to 70
Burner types GL, RGL and RGMS:
Pressure side air regulation via a
compound regulated control sleeve in
the mixing head.
Heavy oil burners
Heavy oil burners are fitted with oil
preheaters which control the oil
temperature to keep it at the necessary
viscosity for good atomisation. Before
the burner starts, a temperature
controlled sequence programme heats
the nozzle to the same operating
temperature by circulating preheated oil
through the nozzle head.
Valve trains
To comply with EN 676 burners must be
equipped with two solenoid valves.
Weishaupt gas and
dual fuel burners are
equipped with two Class A solenoid
valves (DMV) as standard. The W-FM
100 combustion manager provides for
valve proving when an additional gas
pressure switch is fitted. Other gas side
accessories such as gas filters and gas
pressure regulators, can be found in the
List of Accessories.
Digital combustion management
The W-FM 100 and W-FM 200*
combustion managers ensure the simple
and safe operation of combustion plant.
All important functions, such as fuel and
air feed or flame monitoring are
controlled with digital precision. The aim
is the optimisation of operational
functions, the maximisation of economy,
and the minimisation of emissions.
Thanks to digital combustion
management such an optimisation is
available today at limited cost. The outlay
for installation and service is substantially
lower than with conventional
technologies.
For example, a separate control panel for
the burner switchgear is no longer
necessary. Furthermore, remote
operation, diagnosis and monitoring of
the plant can be realised. That makes
things safer and simpler for the operator.
Applications
The burners can be used with heat
exchangers such as hot water
boilers,
steam
boilers, air heaters, and for certain
process applications. As the burners are
capable of overcoming high combustion
chamber resistances, they are used
primarily on modern high rated
boilers.
Fuels
Oil side (Fuel Oil DIN 51 603):
Light fuel oil (EL)
Viscosity 6 mm2/s at 20°C
Medium and heavy fuel oil (S)
Viscosity up to 50 mm2/s at 100°C
Gas side (DVGW Worksheet G 260/l):
Natural Gas E (formerly designated
Natural Gas H)
Natural Gas LL (formerly designated
Natural Gas L).
Liquid petroleum gas F
Installation sites
In standard execution (materials,
construction, protection), the burners are
suitable for use indoors at temperatures
between -15°C and +40°C and with a
maximum relative humidity of 80%.
Certification
The burners have been independently
tested and comply with the following
European standards and EC directives:
• EN 267 / EN 676
• Machinery Directive 98/37/EC
• Electromagnetic Compatibility
Directive 89/336/EEC
• Low Voltage Directive 73/23/EEC
• Gas Appliance Directive 90/396/EEC
• Pressure Vessel Directive 97/23/EC
Outstanding service
Weishaupt maintains an extensive global
sales and service network. Customer
service is available every day around the
clock. In-house training by Weishaupt
ensures the high standard of their service
engineers.
* Available early 2004
Description
Weishaupt industrial burners, sizes 30 to 70, have been especially designed for
industrial capacity ranges. The monobloc burners are noteworthy for their large
capacity and operational ranges and numerous other interesting details:
• Compliance with the most stringent directives and emission limits
• Large capacity and operational ranges
• Stable fan reference line - good combustion behaviour
• Quiet operation
• Burner housing can be hinged open
• Easy to install, set and service
• Automatic air shut off on burner shut down
