Products and Product Standards for Hot Water Control
The control of hot water pressure and temperature after it leaves its source (boilers and water heaters) must be accomplished by additional control devices designed into the system.
Boilers and water heaters produce hot water and their performance requirements are covered by various national standards. These hot water-producing systems are for the production of hot water but not the final control of the hot water as it is used in plumbing systems. The control of the hot water after it leaves its source must be accomplished by additional control devices.