Raypak 302-902 Section L General Safety Precautions, TIME/TEMPERATURE Relationships in Scalds

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SECTION L: GENERAL SAFETY PRECAUTIONS

To meet commercial water use needs, the temperature Hi-Limt on this hot water boiler is adjustable up to 210°F. However, water temperatures over 125°F can cause severe burns instantly or death from scalds. The preferred starting point for setting the control for supplying general purpose hot water is 125°F.

Safety and energy conservation are factors to be considered 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 consistent with the application.

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

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

See instruction manual before setting temperature at water heater.

Feel water before bathing or showering.

Temperature limiting valves are available, see note below.

Maximum water temperatures occur just after the boiler’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.

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.

Temperature

Time to Produce Serious Burn

 

Temperature

Time to Produce Serious Burn

120°F. More than 5 minutes

140°F. Less than 5 seconds

125°F. 1-1/2 to 2 minutes

145°F. Less than 3 seconds

130°F.

About 30 seconds

150°F.

About 1-1/2 seconds

135°F.

About 10 seconds

155°F.

About 1 second

Table courtesy of The Shriners Burn Institute

TIME/TEMPERATURE RELATIONSHIPS IN SCALDS

The temperature of the water in the hot water boiler can be regulated by setting the temperature dial on front of the thermostat. To comply with safety regulations the thermostat was set at its lowest setting before the hot water boiler was shipped from the factory. The illustration below shows the thermostat and how to adjust the water temperature.

To adjust the water temperature, insert a small straight screwdriver into slotted screw in hole in front of thermostat and turn wheel to desired setting.

CAUTION!!

- Hotter water Increases the risk of SCALDING!

 

 

There is a Hot Water SCALD Potential if the thermostat is set too high.

Adjustment

Screw

NOTE: When this hot water boiler is supplying general purpose hot water requirements for use by individuals, a thermo- statically 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.

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Contents Installation Operating Instructions Table of Contents Page Section a Before Installing the Boiler Model Identification High Delta Component Location General Information Stacking Equipment BaseBoiler Side 302-902 Boiler SizeOutdoor Installation Minimum Clearances OutdoorinstallationsCombustion and Ventilation AIR Indoor Units Direct VENT-INSTALLATONSection C Combustion and Ventilation AIR Page Temperature & Pressure Gauge LOW Temperature SystemSection D Water Piping General Reliefvalve PipingSection E Hydronic Heating Piping Fig. #9223 DUALBOILERPRIMARY/SECONDARYPIPINGSingle Domestic HOT Water Heater with ONE Storage Tank Section F Domestic HOT Water PipingPotable Water and Space Heatingapplication Bypass Section G Pool HeatingSpawater Chemistry Singlepoolheaterapplication Automatic Chlorinators and ChemicalfeedersWinterizingyour Heater GAS Supply Pressure Section H GAS Supply ConnectionsGAS Supply Connection GAS Pressure Regulator Check the Power Source Section I Electrical Power ConnectionsCheck Power Source FIELD-CONNECTEDCONTROLLERSMaking the Electrical Connections Field Wiring ConnectionShockhazard Electrical Connections Domestic HOT WaterDefinition ofAppliance Categories Section J Venting ConnectionsTable J-1 Vent Terminal Location General Support of Vent StackVenting Configurations Venting Installation TipsNatural Draft Verticalvent Section J-1 Natural Draft Vertical Venting CategoryNatural Draft Vertical Vent Termination Natural Draft Vertical Venting System InstallationPage HORIZONTALTHRU-WALLVENTING Category III Table Section J-2Fig. #9436 HI Delta Sleeve Flue ConversionHorizontal Thru-wall Direct Vent Termination HORIZONTALTHRU-WALLVENTING Table Section J-3 Direct VentHorizontal Thru-wall Direct Vent Termination Verticalventing Table Direct VentVertical Direct Vent Termination Vertical Direct Vent System InstallationHideltaoutdoorventkitandinstructions Section J-5Heater as shipped HI Delta Outdoor Vent InstructionsFinished assembly HI Delta Filter BOX Instructions HI Delta Filter BOX KITThiskitincludes Model Partnumber Filter Section K Controls HI-DELTAModel Boiler Sequence of OperationsHI-DELTAModel HI-DELTAModel902 Flow Switch High Limit Manual ResetIgnition Control Module Operating ControlLOW Water CUT OFF Optional LOW Water Cutoff High and LOW GAS Pressure SwitchesGAS Pressure Switch Wire Diagram Model Reference Drawing Number M152470-Rev. J H3/W3 Reference Drawing Number M152464-Rev R H3/HW3 Reference Drawing Number M152465 Rev-P H3/W3 TIME/TEMPERATURE Relationships in Scalds Section L General Safety PrecautionsSection M PRE-START-UP Tools Needed Section N HI-DELTA Initial START-UPPreparation for START-UP Turn Off Main Gas ValveYour Hi-Delta is tuned START-UPPilot Turn Down Test for Raypak HI Delta Boilers Leak Test Procedure DUAL-SEAT GAS ValvesPage Section O Post START-UP Check Toturn Offgastoappliance Section P OperationSuggested Minimum Maintenance Schedule Section Q MaintenanceWeekly Preventive Maintenance ScheduleSemi-Annually AnnuallyInsidecombustionaircontamination Appendix aCorporate Headquarters

302-902 specifications

The Raypak 302-902 is a highly efficient, reliable, and versatile heating solution commonly used in residential and commercial pool heating applications. Known for its exceptional performance and advanced technology, the Raypak 302-902 has become a favored choice among pool owners looking to extend their swimming season and enhance comfort.

One of the main features of the Raypak 302-902 is its robust construction. Built with a copper heat exchanger, it is designed to withstand the rigors of continuous use while offering superior heat transfer capabilities. The heat exchanger is also designed for easy maintenance, enabling pool owners to keep their systems running efficiently for years.

The Raypak 302-902 employs advanced digital controls, which provide precise temperature regulation. This modern control system allows users to set their desired water temperature with accuracy and maintain it consistently, ensuring a pleasant swimming experience. Additionally, these digital controls feature self-diagnostic capabilities, alerting users to potential issues, which aids in quick troubleshooting and maintenance.

In terms of energy efficiency, the Raypak 302-902 stands out with its ability to harness energy effectively, leading to significant savings in operational costs. It is equipped with an efficient gas burner, which optimizes fuel consumption while delivering rapid heating performance. This efficiency is complemented by its ability to operate with natural gas or propane, making it adaptable to various setups and preferences.

The unit also prides itself on its environmentally friendly operation. It meets stringent regulations for emissions, ensuring that pool owners can enjoy a pool heating solution that is both effective and reduces its ecological footprint. This focus on sustainability has made it a popular choice among environmentally conscious consumers.

Moreover, the Raypak 302-902 is designed for versatility. It can be easily integrated with existing pool systems and is compatible with both in-ground and above-ground pools. This flexibility allows it to cater to a wide range of pool sizes and configurations, making it suitable for both residential and commercial applications.

In conclusion, the Raypak 302-902 offers an array of features, technologies, and characteristics that make it a top contender in the pool heating market. With its durable construction, advanced digital controls, energy efficiency, and environmentally friendly operation, it remains a reliable choice for those seeking comfort and convenience in their swimming experience. Whether for a backyard oasis or a commercial facility, the Raypak 302-902 delivers consistent performance and accessibility.
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