Benefits of Cascading Your Boiler

Large space heating or domestic jobs can include multiple units in a “cascade system,” allowing for higher turndown ratio.  Larger turndown allows for higher system efficiency.

Below are more advantages of using a cascaded system instead of a single larger boiler –

• High turndown capability when only one boiler is required
• Flexibility with footprint allowing installation in irregular spaces
• Increased reliability with heat provided by several boilers
• Service and maintenance is simplified
• Smaller boilers can be maintained by a single engineer on site
• Different rated outputs can be cascaded
• Boiler control by priority, delivering excellent efficiency and even usage
• Simple spare part management

Above: three HTP Elite boiler units cascaded

Above: HTP Mod Con units cascaded

(information from Econergy | Original article: http://www.econergy.ltd.uk/about/news/?artid=70&pageNum=0&blk=68 )