Pyrtec

Underfeed firing system 390 to 1250 kW

By combining the moving forward feed grate with the proven firing depression and falling outer grate, the Pyrtec optimally unites the advan­tages of the moving grate firing system with the underfeed firing system. An infeed screw trans­ports the wood fuel to the firing depression of the wood heating section, where it is pre-dried. On the outer grate and the moving forward feed grate, the fuel is completely degasified. The wood gases are then combusted with the regulated injection of secondary air.

Underfeed firing system Pyrtec

Maximum quality of design and manufacture


Fuels:
Wood pellets
Wood chips
Wood shavings and mixed wood

Combining the moving forward feed grate with the proven firing depression and falling outer grate optimally unites the advan­tages of a moving grate firing system with the underfeed firing system.

Clean and efficient combustion

The combustion technology of the Pyrtec achieves low emissions values (especially for CO and NOx). Operation with modulating output regulation and an optimised combustion principle enables an efficiency of up to 92%.

Design and function

The Pyrtec wood-fired boiler is a quality product for the harshest condi­tions (high fuel flexi­bility from M10 to M50). The firebox is lined with pressed and baked ceramic bricks that have a high aluminium oxide content for higher resis­tance. All grate elements are made of high-quality, thick castings of chromium steel and are able to withstand high tempe­ra­tures. The Pyrtec wood heating boiler features a three-pass heat exchanger for maximum thermal trans­mission and efficiency.

Boiler control

The boiler is controlled by the completely programmable modulating output and system controller. This controls all variable-speed blowers as well as the fuel feeding mechanism. It also monitors the following:

  • Supply and return tempe­rature of the wood-fired boiler
  • Light barriers of the infeed system
  • Pressure sensor for reliable under­pressure
  • Flue gas tempe­rature
  • Firebox sensor (upper tempe­rature limit)
  • Oxygen content of the flue gas (lambda probe)

Design and output ratings

Type Output range*
Pyrtec 390 130 to 390 kW
Pyrtec 530 177 to 530 kW
Pyrtec 720 240 to 720 kW
Pyrtec 950 317 to 950 kW
Pyrtec 1250 417 to 1250 kW

*Depending on fuel and water content

Pyrtec

Model Pyrtec 390 Pyrtec 530 Pyrtec 720 Pyrtec 950 Pyrtec 1250
Rated thermal output 390 530 720 950 1250 kW
Dimen­sions
Length 3282 3782 3877 3835 4380 mm
Width 1274 1274