Weishaupt Compact burners

Reliable and powerful

The millions of W-series burners that have already been installed are a reliable, safe, and economical source of heat for domestic and commercial heating and hot-water systems the world over, as well as for countless industrial applications.

The burners, which are rated for outputs of up to 570 kW, are not only extremely compact but they are also equipped with the latest Weishaupt combustion technology Digital combustion management is a standard feature across the range and offers the highest degree of operational reliability and efficiency, thanks to its microprocessor-based monitoring and control of all burner functions.

• Reliable and futureproof
  • Tried-and-tested technology
  • Renowned Weishaupt quality
  • High operational reliability
  • suitable for continuous operation

• Efficiency-enhancing technologies
  • WG10 to WG40 burners available with modulating load control
  • Optional VSD on WG30 and WG40 burners

• Digital combustion management
  • Easy to operate and maintain
  • Integration with modern BMSs
  • Common platform for gas and oil fired burners
  • Suitable for continuous firng > 24 h (W-FM 25 PO)

Weishaupt WM-series monarch

The current range of Weishaupt monarch® burners embodies these virtues within an outstanding design that utilises the latest technology. The gas, oil, and dual-fuel burners are used to fire hot-water, steam, and water-tube boilers, as well as air heaters, and they do so not only reliably but also extremely quietly. Weishaupt was able to use its own aerodynamics testing facility – something unique in the industry – to develop a completely new air inlet geometry that facilitates the extraordinarily quiet and efficient operation of the burners.

Weishaupt digital combustion managers are included as standard with the latest monarch® burners, guaranteeing both low emissions and the extremely precise and continually reproducible dosing of fuel and combustion air. Furthermore, digital control of the burners opens up numerous opportunities for automation and control through integration with building management systems and bus networks.

The burners can also be equipped with variable speed drive and O2 trim to help increase efficiency even further – flexibility that pays for itself. Weishaupt’s WM-series monarch® burners offer a seamless range of outputs up to 12 MW.

This latest generation of these burners is particularly notable for efficiency, low emissions, and reliable operation.

• Digital combustion management with electronic compound regulation.
• Compact design.
• Easy access to all components.
• Sound-attenuated air inlet as standard for quieter operation.
• IP 54 protection.
• Suitable for a wide range of gas types, such as natural gas, LPG, town gas, coke oven gas*, biogas*, or sewage gas* (*gas analysis required).
• Different mixing assemblies depending on emission limits.
• Suitable for operation with intermittent or continuous firing.
• Load control can be affected by means of thermostats, pressure controls, or current/voltage signals.

Weishaupt PLN series burners

For more than six decades, Weishaupt’s monarch® series burners have been used on a wide variety of heat generators and industrial plant, and their success has helped underpin Weishaupt’s outstanding reputation.

Their PLN-version burners stand ready for use in situations where the very lowest of emission levels are being demanded. PLN stands for Premix Low NOx – a system that combines premixing with surface-stabilised combustion.

A further advantage of this type of combustion system is that it can be used on appliances with particularly small combustion chambers, as well as with more typical boilers.

The WG40, WM-G10, WM-G20, WM-G30 burners cover, between them, an output range of 60-5000 kW. Weishaupt’s PLN-version premix burners also have similar turndowns to their forced-draught stablemates. The electronic compound regulation that is provided by the W-FM 50, W-FM 100, and W-FM 200 combustion managers can achieve turndown ratios of 7:1.

One substantial benefit of this technology is to be found in the combustion chamber requirements. These can be considerably smaller than those found in typical boilers.

The gas/air mix, which is under pressure, permeates the microweave alloy mat and combusts at its surface. The flame carpet thereby created has flame temperatures below 1200 °C and so the formation of thermal NOx is inhibited. NOx emission levels below 30 mg/kWh are now also a reality for medium-capacity burners.

• Low emissions
• High efficiency with VSD
• Safe Premix operation with dual flame monitoring, integrated insulator, and two fold air filter
• Robust and reliable
• Digital
• Quiet (Optimised laminal air and gas flow, speed controlled)

Weishaupt WKmono-series burners

For more than six decades, Weishaupt burners have proven themselves on a wide variety of heat generators and process plant. Their success stems from a relentless demand for high- quality materials and workmanship, and uncompromising quality control standards.

Weishaupt continually establishes new benchmarks with its well- engineered products, facilitated by the ever-constant efforts of its own Research and Development Centre. Such efforts produced the WKmono 80, which shares its platform with the duobloc WK 80. The large 1200 to 17000 kW range of the WKmono 80, which is available in NR and multiflam® versions and is suitable for natural gas, LPG, and gas oil, is particularly impressive.

• Minimal time required for installation
• Short body length reduces mechanical load on the front of the heat generator
• The compact dimensions of the burner require a minimal amount of space
• Digital combustion management with electronic compound regulation at all ratings
• Easy access to all components, such as mixing assembly, air damper, gas butterfly valve, and combustion manager.
• Computer-controlled function test of each individual burner at the factory
• The use of components from the WK burner range is beneficial to installers and operators alike, simplifying both the provision and storage of spare parts and training and service
• IP 54 protection as standard
• Mixing assemblies available in ZM-NR, ZM-3LN multiflam®, ZM-4LN, and ZM-VSF swirlflame versions
• DOptional flue gas recirculation will meet the world’s strictest NOx emission limits
• WKmono 80/2 has an integrated rail system that makes it easier to insert and remove the mixing assembly
• Burner available with an inverted air inlet for connection to an overhead ducted air supply
• A high degree of in-house production for burner and air inlet housings, mixing assemblies, and the oil regulating loop

Weishaupt WK-series burners

The WK-series burners are Weishaupt’s most powerful burners of all. They were designed especially for hard industrial use, with capacities of up to 32000 KW. The modular concept with an external fan facilitates a specific matching to all operating conditions. WK-series burners are available as gas, oil, and dual-fuel units.

Weishaupt WK-series burners are suitable for intermittent firing and continuous firing on LTHW boilers, HTHW boilers, Steam boilers, Air heaters, Thermal fluid heaters, Process applications.

Features to save energy and increase safety and reliability.
VSD provides several benefits. It facilitates a soft start of the burner fan, keeping the start current to a minimum, and matches the speed of the fan to combustion air volume during operation, which saves electrical energy and
reduces noise emissions.

O2 trim saves fuel by means of a continual and extremely efficient optimisation of the combustion air. The system is controlled by a Lambda probe, which continually measures the oxygen content of the flue gas.

• Digital combustion management
• Specially developed mixing assembly
• Insulated burner housing
• Nozzle head shut-off solenoid, Modulating regulation
• Controlled shutdown from partial load
• Hot-air version WK burners for combustion air temperatures up to 250 °C
• Numerous executions for a wide range of applications and emission level requirements
• Optional flue gas recirculation will meet the world’s strictest NOx emission limits
• “Swirlflame” mixing assembly to match flame length to the combustion chamber

Weishaupt marine-execution burners

For decades, Weishaupt has designed and produced marine burners for a wide range of applications, such as auxiliary and hot-water boilers for ships or offshore installations. Weishaupt’s in-house Research and Development Centre is constantly working on innovative new developments. The burners are notable for their robust and compact design, and for being easy to install and service. Particular care was taken during development to ensure a maintenance-friendly design. The commitment to quality goes beyond the burner and its servicing. Weishaupt offers individual solutions for fuel trains and for the control of burners, boilers, and their services. Weishaupt is your one-stop shop for expertise.

Digital combustion management makes the operation of combustion plant both convenient and safe. All essential functions, such as flame monitoring and the regulation of fuel and air are affected and controlled with digital precision.

A Weishaupt burner for almost any fuel. There are various qualities of marine fuel oil (MFO). MARPOL 73/78 Annex I to VI regulates the use and the emission of sulphurous combustion products in certain sea areas. This has resulted in the production of non-standard, reduced-sulphur oils.
The ISO 8217 standard for marine fuels differentiates between distillate fuel oils(MGO) and residual fuel oils (RFO). The most important specifications limit the density viscosity, water content, and flash point of the oil.

MARPOL regulations stipulate that a sample of each fuel delivered must be available onboard. The fuel may only be used once the fuel specification (Bunker Delivery Note) has been approved by the test laboratory.

Weishaupt burners in marine execution aresuitable for use with marine fuel oils that are compliant with ISO 8217 2010-06-15 andISO 8217 2011-09 (please enquire regarding the suitability of other fuels).

For safety reasons, due to its low flash point of 45 °C, DMX-quality oil is not approved for combustion on board ships.

Weishaupt 4LN-version gas burners

Weishaupt 4LN-version gas burners are an innovative further development of patented multiflam® technology combined with flue gas recirculation.

At the heart of this further development of larger multiflam® burners lies a swirl body in the secondary air area and a longer flame on the primary diffuser. In combination with flue gas recirculation, the swirl body generates an intensive mixing of the fuel, air, and recirculated flue gas. The primary flame, which is adapted for high flue gas recirculation rates, ensures the flame remains stable at all stages of operation.

How does FGR work?
Flue gas recirculation has a particular effect on the formation of thermal NOx by reducing the oxygen concentration in each cubic metre of air. This results in increased air flow speed, which reduces the dwell time of the combustion gases in the hot reaction zone and lowers the flame temperature.

• NOx emissions < 30 mg/kWh, proven with measurements taken under test conditions and during long-term field trials
• Reliable behaviour with a high degree of flame stability across the widest range of operating conditions
• Flexible matching of mixing pressure and swirl in the secondary fuel outlet area
• Partial air / gas premixing
• Improved flame monitoring with two independent sensors
• High-quality components made from cast aluminium and stainless steel
• Precision-engineering of individual components, painstaking production of the mixing assembly, large degree of in-house production
• Excellent cold start behaviour
• Weishaupt 4LN burners can now operate with preheated combustion air.
• Automatic correction of the flue gas volume via temperature compensation
• Maximum opening of the FGR butterfly valve limited according to load
• Minimum opening of the FGR butterfly valve can be adjusted
• Compliance with the world’s most stringent NO emission limits