The Prestige Cascade can combine 2 to 5 Prestige 399 boilers for outputs from 112 to 1995 MBH. The boilers are centrally controlled by an Optima Series Controller from Triangle Tube. With a maximum turndown ratio of 18 to 1, the Cascade provides ample output during peak demands, yet adjusts its output during lower demands to minimize boiler cycling and maximize efficiency.|
The Common Vent for the Cascade allows either 2 or 3 boilers to be joined to a common vent, reducing venting space, installation time, and cost. The polypropylene venting meets ULC S636 requirements and is designed to optimize the system performance. A single wall penetration would be required for either the 2 or 3 boiler models. Several termination and flashing options are available.