The Danfoss ZCP system is a totally pre-engineered system that provides a prefabricated module at a fixed cost. Using accepted engineering principles for hydronic heating systems, Danfoss produces pre-wired, 100% tested modules in an ISO 9001 & 14001 controlled factory environment. Benefits of the ZCP system include a pre-engineered and pre-assembled solution, consistency on every job, fixed cost and reduced parasitic losses, reduced installation and start-up times, and reduced call-backs. Danfoss.