Not suitable for the Compact 150 with pellet or briquettes. When using these fuels the high temperture step grate is required. Stainless Steel Grate Version
It is advised to change all 8 grate sections at the same time.
At the heart of the Compact 100 -200 and the HDG M series boiler lies the HDG step grate system.
Step grates are usually associated with much larger boilers, because the cost of manufacturing this innovative moving grate solution would normally prevent its inclusion within a boiler of theses sizes.