Raypak HD101 THRU 2342B Cold Water Start Cold Water Run, Simple Serviceability, Control Options

Cold Water Start

Cold Water Run

Cold Water Solution Options

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 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. (See Cat. #1000.19)

Simple Serviceability

Raypak’s easy-to-understand user interface, including on- board diagnostics and LED operating status lights, tells the technician all he needs to know. All service/repair components are readily accessible from the front for max- imum installation flexibility.

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1	Diagnostic Control Center		6	Manual reset high limit
2	Fenwal ignition control		7	Main power disconnect
3	Central point wiring board		8	Standby power switch
4	Transformer		9	Status lights

5Pump delay relay

Control Options

Raypak’s array of leading edge controllers offer features such as: sequence-control of up to 40 boilers; PID technology; optimized approach to outdoor reset; LonWorks or BMS interfacing; freeze pro- tection and other energy-saving functions. Raypak’s controllers have been specially designed to maximize the performance of its leading- edge Hi Delta boilers.

TempTracker

Designed to sequence multiple boilers up to four total stages, whether it’s one to four on/off boilers, two two-stage boilers, or one boiler with up to four stages. It is available factory-mounted or loose. (See Cat. 5100.22)

RayTemp

Demand-based set-point control maximizes energy savings in domestic hot water appli- cations (See Cat. 5100.18)

Y-200 Boiler Sequencer

Provides additional functionality for multi- ple-boiler installations. Compatible with LonWorks® Building Management Systems (BMS) (See Cat. #5100.22)

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