Raypak 751 manual Vent Switch Adjustment, Connecting Add-on Condensing Heat Exchanger to ADB

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10.Connect the flue vent (Category IV venting, UL 1738 Certified Venting Material) to the 15° elbow of the CHX flue outlet.

11.Connect the PVC pipe (not supplied) for conden- sate water disposal (check with local authority regarding condensate disposal).

12.Replace the shroud.

13.Allow the silicone (RTV) to cure over-night.

Vent Switch Adjustment:

In order to ensure proper operation of the ADB boiler with a CHX attached to it, the vent switch must be adjusted to proper setting. The vent switch is located on the J-box, just outside the ignition module. Use the following steps:

•Turn power off; disconnect the electrical wiring and the rubber hose.

•Remove the switch (it has a black plastic orifice at the hose connection).

•On the backside, remove the (purple) seal from atop the adjusting screw.

•Turn the plastic hex screw 1-1/2 turn clockwise.

•Seal with silicone.

•Reinstall in reverse order.

Table W: CHX Rate of Flow and Pressure Drop

Fig. 39: Connecting Add-on Condensing Heat Exchanger to ADB

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Contents Advanced Design Boiler Page Contents Pay Attention to These Terms Installations at Elevation Before InstallationProduct Receipt Model IdentificationComponent Locations Component LocationsTime/Temperature Relationships in Scalds General SafetyInstallation Codes InstallationIndoor Installations Equipment BaseCombustion and Ventilation Air Outdoor InstallationsIndoor Units Direct VentInstallations1 Canadian Installations2 Conventional Combustion Air Supply InstallationsCanadian Installations Temperature & Pressure Gauge Low Temperature SystemWater Piping GeneralHydronic Heating Single Boiler Primary/Secondary Piping Dual Boiler Piping Domestic HOT Water Piping Single Boiler Domestic Hot Water with One Storage Tank Page Automatic Chlorinators and Chemical Feeders Pool HeatingWinterizing Your Heater Pool and Spa Water ChemistrySingle Boiler Pool Application Double Boiler Pool Application GAS Supply ConnectionsGas Supply Pressure Gas Supply ConnectionElectrical Power Connections Electrical Connections Domestic Hot Water Field Wiring ConnectionsGeneral Definition of Appliance Categories Venting ConnectionsVent Terminal Location Venting Configurations Venting Installation TipsADB-1501 Natural Draft Vertical Vent Termination Natural Draft Vertical Venting System InstallationADB-1501 Horizontal Thru-Wall Direct Venting/Combustion Air Category Horizontal Thru-wall Direct Vent TerminationÁDB-1501 Vertical Direct Venting/Combustion Air Category Vertical Direct Vent Termination Vertical Direct Venting System InstallationContact the manufacturer for details Horizontal Thru-wall Venting System Category IV Installation PVC, ABS Page Galvanized ADB-751 Venting Material e.g Subtract 10 ft per Condensate Trap Alignment Condensate DrainCPW Board Central Point Wiring CPWControls Freeze Protection Feature Pump Turn-off DelayBlower Fan Pre-purge Blower Fan Post-purgeLight Color Indication Diagnostics BoardFigure L-2 Wiring DiagramHigh Limit Manual Reset Flow SwitchHigh Limit Auto Reset Ignition Control ModulePRE-START-UP High and Low Gas Pressure Switches Manual ResetLow Water Cut Off Optional Fill the SystemBlower T Fitting Detail Pre-Start-up CheckPreparation for Start-up ADB Initial START-UPTools Needed Page Safety Inspection Main Burner AdjustmentPost START-UP Check Follow-upSuggested Minimum Maintenance Schedule MaintenanceOperation Operating InstructionsCleaning Boiler Heating Surfaces Connecting the Condensing Heat Exchanger CHXDaily MonthlyConnecting Add-on Condensing Heat Exchanger to ADB Vent Switch AdjustmentInside Combustion Air Contamination AppendixEmissions Settings and Test Information Bluff Head Body Burner Warranty

751 specifications

The Raypak 751 is a high-efficiency, gas-powered pool and spa heater renowned for its advanced technology and durability. Designed with innovative features, the Raypak 751 prioritizes user convenience and energy efficiency, making it an excellent choice for pool owners seeking reliable heating solutions.

One of the standout features of the Raypak 751 is its robust heat exchanger, built from the finest materials to ensure long-lasting performance. This model utilizes a copper heat exchanger which is highly conductive, allowing for rapid heating of water and maintenance of consistent temperatures. Its design also minimizes scale buildup, extending the longevity of the heater.

The Raypak 751 is equipped with advanced digital controls that make it user-friendly. The intuitive interface allows for precise temperature settings and monitoring, ensuring optimal performance. Additionally, the heater features a temperature display that provides real-time updates, giving users peace of mind when adjusting their pool's environment.

Energy efficiency is a hallmark of the Raypak 751, thanks to its low NOx burner technology. This feature meets stringent environmental regulations while also lowering operational costs. By optimizing fuel usage, the heater not only contributes to reducing greenhouse gas emissions but also provides a more economical heating option for pool and spa owners.

The rugged construction of the Raypak 751 is another characteristic that sets it apart. Its heavy-duty cabinet is designed to withstand the elements, ensuring reliable operation in various weather conditions. The heater is available in multiple configurations, including both natural gas and propane options, allowing for flexible installation depending on the user's needs.

Furthermore, the Raypak 751 incorporates safety features, such as an integrated pressure switch that prevents operation when water flow is insufficient. This protects both the heater and associated plumbing from damage due to overheating or dry firing.

In summary, the Raypak 751 combines cutting-edge technology with user-centric features to deliver a superior pool heating experience. Its high-efficiency performance, durable construction, and advanced safety features make it a top choice for anyone looking to enhance their pool or spa. Whether for residential or commercial applications, the Raypak 751 ensures warmth and comfort, enriching the overall swimming experience.
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