1. Moving grate boiler from >150kW
• large-scale solution now available for commercial applications
• fuel is evenly distributed and pre-dried
• automatic de-ashing into a single ash container
• powered by heavy-duty hydraulic unit

2. Grate element, made of high temperature cast chromium alloy, sectional for easy replacement

3. Primary air supply, lambda-controlled, with load-dependent distribution to combustion and burnout zone

4. Primary air supply, lambda-controlled, with load-dependent distribution to combustion and burnout zone

5. Ash scraper, for de-ashing of the entire boiler base

6. Ash auger, for removal of the ash into the central container

7. Industrial quality
• Wall thickness (standard):
  Exchanger: 6 mm
  Boiler base: 10 resp. 5 mm
• heavy-duty cleaning doors and inspection apertures, functionally arranged

8. Grate screen, prevents damage from debris to the ash auger

9. Radiation arch, with optimised air flow, made of high temp firebricks

10. Combustion chamber
• stoichiometrically designed three zone system
• complete lined with refractory brickwork

11. Boiler tube cleaning
• unique high-velocity fluegas circulation system
• avoids emission peaks generated by air blasts
• automatic de-ashing in preset intervals, with cleaning effect over the entire tube length
• no interference with the combustion process

12. Lining with standard firebricks instead of manufacturer specific moulded bricks: simple and cheap to repair

13. Secondary air supply, lambda-controlled, with optimally arranged nozzles for excellent mixing

14. Water-cooled boiler jacket
• absorbs the heat from the firebox (heat exchanger’s first pass)
• preheats the return via a duct along the boiler jacket

15. Boiler tubes, best-practise chamfered and root welded, individually exchangeable if needed

16. Anti-burnback provisions
• controlled negative pressure inside the combustion unit
• thermostatic sensor intervening PLC routine
• direct-acting thermostatic water dousing system
• approved spring-loaded damper or rotary air valve
• monitored fuel barrier or 2-fold mechanical separation