Raypak HD401, HD101 manual General Safety, Time/Temperature Relationships in Scalds

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GENERAL SAFETY

To meet commercial hot water use needs, the high limit safety control on this water heater will shut off the main gas valve before the outlet temperature reaches 210°F. However, water temperatures over 125°F can cause instant severe burns or death from scalds. When supplying general purpose hot water, the rec- ommended initial setting for the temperature control is 125°F.

Safety and energy conservation are factors to be con- sidered when setting the water temperature on the thermostat. The most energy-efficient operation will result when the temperature setting is the lowest that satisfies the needs of the application.

Water temperature over 125°F can cause instant severe burns or death from scalds. Children, disabled and elderly are at highest risk of being scalded.

Feel water before bathing or showering.

Temperature limiting valves are available.

NOTE: When this water heater is supplying general purpose hot water for use by individuals, a thermostatically controlled mixing valve for reducing point of use water temperature is recommended to reduce the risk of scald injury. Contact a licensed plumber or the local plumbing authority for further information.

Maximum water temperatures occur just after the heater’s burner has shut off. To determine the water temperature being delivered, turn on a hot water faucet and place a thermometer in the hot water stream and read the thermometer.

Water temperature over 125°F can cause instant severe burns or death from scalds.

Children, disabled, and elderly are at highest risk of being scalded.

See instruction manual before set- ting temperature at water heater.

Feel water before bathing or show- ering.

Temperature limiting valves are available, see manual.

Time/Temperature

Relationships in Scalds

The following chart details the relationship of water temperature and time with regard to scald injury and may be used as a guide in determining the safest water temperature for your applications.

Water

Time to Produce Serious

Temp.

Burn

 

 

120°F

More than 5 minutes

 

 

125°F

1-1/2 to 2 minutes

 

 

130°F

About 30 seconds

 

 

135°F

About 10 seconds

 

 

140°F

Less than 5 seconds

 

 

145°F

Less than 3 seconds

 

 

150°F

About 1-1/2 seconds

 

 

155°F

About 1 second

 

 

Table courtesy of The Shriners Burn Institute

Table B: Time to Produce Serious Burn

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Contents Installation & Operating Instructions Page Contents Are important but not related to personal injury hazards Ratings and Certifications Installations at ElevationProduct Receipt Component Locations Component Locations Angle ViewGeneral Information Model Quantity of Burners Vent Size FlueWater Time to Produce Serious Temp Burn General SafetyTime/Temperature Relationships in Scalds Installation Installation CodesIndoor/Closet Installations Equipment BaseOutdoor Installations Heater Side Minimum InstalledCombustion and Ventilation Air Conventional Combustion Air SupplyGeneral Installations in CanadaWater Piping Reversing Water Connections Relief Valve PipingHydronic Heating Dual Boiler-Primary/Secondary Piping Domestic Hot Water Piping Piping-Heating BoilersAir-Separation/Expansion Tank Three-Way ValvesGas Supply Gas Supply ConnectionTable G Maximum Equivalent Pipe Length Gas Supply PressureGas Pressure Regulator Electrical Power Connections Check the Power SourceSurge Protection Making the Electrical ConnectionsElectrical Connections Domestic Hot Water Stage TankstatVenting Definition of Appliance CategoriesVent Terminal Location Barometric DamperSupport of Vent Stack Table I Vent/Air Inlet Termination Clearances US Installations Venting Installation Tips Venting ConfigurationsCertified Minimum Model Appliance Barometric Damper feetNatural Draft Vertical Venting System Installation Natural Draft Vertical Vent TerminationModel Appliance Certified Vent Size Max. Venting Category Inches Length feetHorizontal Thru-wall Direct Vent Termination Certified Max Combustion Air Inlet Max. Air Model Venting Air IntakeCategory Inches Length FeetMaterial Inches Min Max Inches FeetVertical Direct Vent Termination Outdoor InstallationVertical Direct Vent System Installation High Limit Manual Reset High Limit Auto Reset OptionalControls Ignition Control ModuleLow Water Cut Off Optional Flow SwitchHigh and Low Gas Pressure Switches Optional Wiring DIAGRAM-MODELS HD101-HD401 HD Troubleshooting PRE-START-UP Initial START-UPPage Start-Up Main Burner AdjustmentGas Valve Adjustment Safety Inspection Gas Type Conversion on ValveAir Filter Inspection/Removal Post START-UP CheckFollow-Up Heat Exchanger Removal Remove the Screws and PanelYearly Beginning of each heating season MaintenanceSuggested Minimum Maintenance Schedule Appendix Inside Combustion Air ContaminationDaily MonthlyPage Page Page
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HD101, HD401 specifications

Raypak is renowned for its commitment to high-quality heating solutions, with the HD101 and HD401 models standing out in their product range. These units are designed specifically for commercial applications, providing reliable and efficient hydronic heating systems. The HD series embodies innovation while addressing the unique demands of larger spaces.

One of the main features of the HD101 and HD401 is their stainless steel construction, which ensures increased durability and resistance to corrosion. This design choice enhances the longevity of the units, making them ideal for various installations in commercial or industrial settings.

Both models are equipped with a high-efficiency heat exchanger that maximizes heat transfer while minimizing energy consumption. This feature is particularly significant in today’s environmentally conscious market, as it contributes to lower operating costs and reduced carbon footprints. The heat exchangers are engineered for easy maintenance, offering simplicity when service is required.

In terms of technology, the HD101 and HD401 include advanced digital controls that allow for precise temperature regulation. This user-friendly interface enables operators to easily manage and monitor heating parameters, facilitating optimal performance and energy management.

The models also feature modulating burners that adjust their output according to the heating demand. This capacity for modulation results in smoother operation and an overall increase in efficiency, as the burners can maintain consistent temperatures without excessive energy use.

Another noteworthy characteristic is their compatibility with various control systems, including BMS (Building Management Systems). This adaptability allows for seamless integration into existing infrastructure, providing users with greater versatility and control over their heating environments.

Both the HD101 and HD401 come with advanced safety features, including flame rollback protection and pressure monitoring, ensuring safe operation even in demanding conditions. Additionally, their compact design allows for easy installation in limited spaces while still providing powerful heating capabilities.

Ultimately, the Raypak HD101 and HD401 are exceptional choices for those in need of high-efficiency commercial heating solutions. With their robust construction, advanced technology, and user-friendly features, these models promise to deliver reliable performance and energy savings for years to come. Whether for a large facility or a specific industrial application, they stand ready to meet the heating challenges of today’s commercial landscape.