System for hot and consumable water supply to local consumer unit triggers consumable water heating if hot consumable water in tank falls below demand level

摘要

The system has feed and return lines (2,4) connected to a heating circuit (12) on one side and via a heat exchanger (14) to a consumable water tank (16) with connected taps (20) on the other side. Further control arrangements (22) are provided to trigger a consumable water heating process if the quantity of hot consumable water in the tank falls below a demand level.