Cold Water Solutions

Cold Water Start

It is commonly known that prolonged internal condensation will dramatically shorten the life of standard boilers and water heaters. While Raypak boilers and water heaters can operate without harmful condensation at lower inlet water temperatures than the competition, there are still applications that require reliable protection against harmful condensation caused by frequent, extended, cold water start-ups. Raypak’s Cold Water Start protection system utilizes a proportional three-way valve to bypass water from the boiler outlet to the inlet during start-up, when the system return water temperature is below the minimum acceptable level. Cold Water Start Protection Requirements for Hi Delta Boilers.

Raypak’s Cold Water Start system:

• Continuously monitors and adjusts inlet water temperature to prevent condensation
• Regulates minimum inlet water temperature during system start-up
• Shuts down boiler if the minimum inlet water temperature is not achieved
• Eliminates jobsite set-up with proprietary self-tuning controller and system-matched components
• Utilizes proportional three-way valve to achieve bypass
• Allows high-temperature system operation without cycling on high-limit
• Activates alarm if shutdown occurs (option)

Cold Water Run

For the same reason stated for Cold Water Starts, it is even more important to provide protection against condensation from cold inlet water on systems where the return water temperature to the boiler will always be below the acceptable minimum. Raypak’s Cold Water Run system utilizes a variable-speed pump to inject just the right amount of water from the main system loop into the boiler to maintain the optimum inlet temperature. This approach allows the full capacity of the boiler to be utilized to meet the system load, while at the same time continuously maintaining the optimum inlet water temperature to prevent condensation.

Raypak’s Cold Water Run system:

• Continuously monitors and adjusts inlet water temperature to prevent condensation
• Regulates minimum inlet water temperature regardless of system temperature
• Shuts down boiler if the minimum inlet water temperature is not achieved
• Protects boiler from constant low return water temperatures with its proprietary self-tuning controller
• Utilizes variable-speed injector pump to control boiler loop temperature
• Activates alarm if shutdown occurs (option)