Raypak 302-902 manual Boiler Sequence of Operations, HI-DELTAModel

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Boiler Sequence of Operations

HI-DELTAModel 302-402

The black (hot) wire leads you directly to the Main Power Switch. This switch is located at the bottom right-front corner of the control compartment. When the main power switch is placed in the “ON” position, both the 120 v and 24 v terminal blocks on the Main Circuit Board will be powered and the power light will turn on. When the Auto On- Off switch is turned ON, the following 24 v safety components are immediately energized: Low Water Cut-off, Blocked Vent Switch, Manual Reset Limit Control, Low Gas Pressure Switch (optional) and the High Gas Pressure Switch (optional). At this point if all the preceding safety switches are closed, then Relay K. 1 (n.c.) will be energized and the safety light will turn off. The boiler is now ready for a call for heat.

When STAGE 1 calls for heat, the CALL FOR HEAT LIGHT will turn on. The Economaster Board will be energized and the pump will turn on. If the pump generates enough flow to activate the flow switch, the flow light would turn on, then power will be applied to the thermostat terminal of the Ignition Module and the Blower will activate. The Air Pressure Switch would then close and the pressure switch terminal on the Ignition Module will be energized, the blower light will turn on. The Unit will now undergo a 15 second pre-purge. After the pre-purge cycle, Hot Surface Igniter will heat up. The heat-up period takes about 30 seconds after which a trial for ignition is initiated. During the trial for ignition, which lasts for four seconds, power is applied to Firing Valve No. 1. If within four seconds, the Remote Sensor establishes flame rectification, Firing Valve No. 1 stays open and the Stage 1 light will turn on. Also, the Valve terminal from the Ignition Module will power Relay K2.

When Stage 2 calls for heat, power will be applied to Firing Valve No. 2 (Solenoid Gas Valve located on the lower manifold), and the Stage 2 light will turn on.

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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 Equipment Base StackingBoiler Size Boiler Side 302-902Outdoorinstallations Outdoor Installation Minimum ClearancesCombustion and Ventilation AIR Indoor Units Direct VENT-INSTALLATONSection C Combustion and Ventilation AIR Page LOW Temperature System Temperature & Pressure GaugeSection D Water Piping General Reliefvalve PipingSection E Hydronic Heating Piping DUALBOILERPRIMARY/SECONDARYPIPING Fig. #9223Single Domestic HOT Water Heater with ONE Storage Tank Section F Domestic HOT Water PipingPotable Water and Space Heatingapplication Section G Pool Heating BypassSpawater Chemistry Singlepoolheaterapplication Automatic Chlorinators and ChemicalfeedersWinterizingyour Heater GAS Supply Pressure Section H GAS Supply ConnectionsGAS Supply Connection GAS Pressure Regulator Section I Electrical Power Connections Check the Power SourceCheck Power Source FIELD-CONNECTEDCONTROLLERSField Wiring Connection Making the Electrical ConnectionsElectrical Connections Domestic HOT Water ShockhazardSection J Venting Connections Definition ofAppliance CategoriesTable J-1 Support of Vent Stack Vent Terminal Location GeneralVenting Installation Tips Venting ConfigurationsSection J-1 Natural Draft Vertical Venting Category Natural Draft VerticalventNatural Draft Vertical Venting System Installation Natural Draft Vertical Vent TerminationPage Section J-2 HORIZONTALTHRU-WALLVENTING Category III TableHI Delta Sleeve Flue Conversion Fig. #9436Horizontal Thru-wall Direct Vent Termination Section J-3 Direct Vent HORIZONTALTHRU-WALLVENTING TableHorizontal Thru-wall Direct Vent Termination Direct Vent Verticalventing TableVertical Direct Vent System Installation Vertical Direct Vent TerminationSection J-5 HideltaoutdoorventkitandinstructionsHI Delta Outdoor Vent Instructions Heater as shippedFinished assembly HI Delta Filter BOX Instructions HI Delta Filter BOX KITThiskitincludes Model Partnumber Filter Section K Controls Boiler Sequence of Operations HI-DELTAModelHI-DELTAModel HI-DELTAModel902 High Limit Manual Reset Flow SwitchIgnition 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 Section L General Safety Precautions TIME/TEMPERATURE Relationships in ScaldsSection M PRE-START-UP Section N HI-DELTA Initial START-UP Tools NeededPreparation for START-UP Turn Off Main Gas ValveSTART-UP Your Hi-Delta is tunedLeak Test Procedure DUAL-SEAT GAS Valves Pilot Turn Down Test for Raypak HI Delta BoilersPage Section O Post START-UP Check Section P Operation Toturn OffgastoapplianceSection Q Maintenance Suggested Minimum Maintenance SchedulePreventive Maintenance Schedule WeeklySemi-Annually AnnuallyAppendix a InsidecombustionaircontaminationCorporate 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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