Raypak 902B, 302B manual Venting Installation Tips, Venting Configurations

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5.Remove the screws, retaining ring and rain gasket from top of heater.

6.Remove the screws, flue collar and gasket from the run side of the tee located in the flue box on top of the heater.

7.Reverse the components and reattach in the new location.

8.Make sure that the stainless steel cover, now lo- cated on the run side of the tee, is sealed to avoid any flue gas spillage.

CAUTION: The silicone vent gaskets must be prop- erly reinstalled to prevent flue gas leakage. Replace any torn or worn vent gaskets.

Venting Installation Tips

Support piping:

•horizontal runs - at least every 5 ft

•vertical runs - use braces

•under or near elbows

WARNING: Examine the venting system at least once a year. Check all joints and vent pipe connections for tightness, corrosion or deterioration.

Venting Configurations

For heaters connected to gas vents or chimneys, vent installations shall be in accordance with the NFGC (U.S.), or B149 (Canada), or applicable provisions of local building codes.

Natural Draft Vertical Venting (Category I)

Installation

The maximum and minimum venting length for Cate- gory I appliances shall be determined per the NFGC (U.S.) or B149 (Canada).

The diameter of vent flue pipe should be sized accord- ing to the NFGC (U.S.) and B149 (Canada). The minimum flue pipe diameter for conventional negative draft venting using double-wall Type B vent is: 5 in. for Model 302B, 6 in. for Models 402B and 502B, and 8 in. for Models 652B, 752B and 902B.

NOTE: A vent adapter (field-supplied) must be used to connect Type B vent to the unit.

Fig. 24: Natural Draft Vertical Venting

(Category I)

Natural draft venting uses the natural buoyancy of the heated flue products to create a thermal driving head that expels the exhaust gases from the flue. The nega- tive draft must be within the range of -.01 to -.08 in. WC as measured 12 in. above the appliance flue out- let to ensure proper operation. Vent material must be listed by a nationally recognized test agency.

The connection from the appliance vent to the stack must be as direct as possible and shall be the same di- ameter as, or larger than, the vent outlet. The horizontal breaching of a vent must have an upward slope of not less than 1/4 inch per linear foot from the heater to the vent terminal. The horizontal portions of the vent shall also be supported for the design and weight of the material employed to maintain clear- ances and to prevent physical damage or separation of joints.

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Contents Installation & Operating Instructions Deletions None Contents Pay Attention to These Terms Before Installation Installations at ElevationProduct Receipt Model IdentificationComponent Locations Component Locations BackGeneral Information Time/Temperature Relationships in Scalds General SafetyWater Time to Produce Serious Temp Burn Installation Installation CodesEquipment Base StackingOutdoor Installations Indoor InstallationsClearances Ft 91 cm within a Combustion and Ventilation Air Indoor UnitsReversing Air Filter Direct VentInstallations Conventional Combustion Air SupplyTruSeal Combustion Air All Air from Inside the BuildingCanadian Installations Water PipingGeneral Reversing Water ConnectionsRelief Valve Piping Hydrostatic Test Cold Water OperationTemperature & Pressure Gauge Hydronic HeatingPump Selection Cold Water StartsPressure Drop in Feet of Head Feedwater Regulator PipingAir-Separation/Expansion Tank Three-Way ValvesPotable Water and Space Heating Pool HeatingAutomatic Chlorinators and Chemical Feeders Winterizing Your HeaterPool/Spa Water Chemistry Water HardnessPH of Water Total Dissolved SolidsGas Supply Gas Supply ConnectionModel Table K Maximum Equivalent Pipe LengthGas Supply Pressure Electrical Power ConnectionsField-Connected Controllers Check the Power Source Field Wiring ConnectionMaking the Electrical Connections Stage Tankstat Venting Flue Exhaust TeeModel Diameter Order Number Appliance CategoriesSupport of Vent Stack Vent Terminal LocationCanadian Installations InstallationsChanging the Flue Outlet Venting Installation Tips Venting ConfigurationsInstallation Natural Draft Vertical Venting CategoryTermination Common Venting SystemCertified Vertical Venting Combustion Air Air Inlet HeightHorizontal Through-the-Wall Venting Category Horizontal Through-the-Wall Venting CategoryDirect Vent Horizontal Through- the-Wall Model Certified Maximum Combustion Air InletVenting EquivalentDirect Vent Vertical Direct Vent VerticalControls Outdoor InstallationFreeze Protection Heater Sequence of Operation Models 302B-902BExternal Lights Color Indication Ignition Module Code ConditionHigh Limit Manual Reset Flow SwitchHigh and Low Gas Pressure Switches Low Water Cut-Off OptionalUDB Fault History UDB Diagnostic BoardPump Time Delay Table R UDB Fault Messages 87%-Efficiency Boilers Special Instructions Water PipingVenting Appliance Categories Model 10F 20F 30F Min. Flow Max Flow GpmVent Terminal Location Vertical Venting CategoryCondensate Management Certified Maximum Combustion Air Air Inlet Model Venting 752BE Combustion Air 902BE 30’ 80’Direct Vent Horizontal Through- the-Wall ABS Cpvc Wiring Diagram START-UP Pre Start-upMain Burner Adjustment Blower AdjustmentStart-Up Safety Inspection Leak Test Procedure Dual-Seat Gas ValvesFollow-Up Pilot Turn-Down TestPost Start-Up Check Leak TestLighting Instructions OperationTo Turn Off Gas To Appliance Troubleshooting StepSuggested Minimum Maintenance Schedule MaintenancePreventive Maintenance Schedule Weekly Semi-AnnuallyAnnually As RequiredAppendix Inside Air ContaminationLimited Parts Warranty HI Delta Types H and WH Limited Parts Warranty HI Delta Type P START-UP Checklist for FAN-ASSISTED Raypak Products Important Instructions for the Commonwealth of Massachusetts
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302B, 902B specifications

Raypak is a prominent name in the heating industry, particularly known for its advanced technology and robust design in residential and commercial heating solutions. Two of their notable models, the Raypak 302B and 402B, exemplify innovation and efficiency in hydronic heating systems, designed to meet diverse needs while ensuring optimal performance.

The Raypak 302B and 402B are high-efficiency boilers that utilize gas-fueled systems. The 302B model has a heating capacity of 302,000 BTU/h, while the 402B boasts a maximum capacity of 402,000 BTU/h. This range of heating output makes these models suitable for a variety of applications, from residential heating needs to larger commercial spaces that require a reliable heat source.

One of the standout features of the Raypak 302B and 402B is their use of fire-tube heat exchanger technology. This design promotes efficient heat transfer and allows for lower emissions, thus minimizing the environmental impact. The fire-tube design also contributes to a longer lifespan and reduced maintenance costs, making these boilers a cost-effective solution over time.

Equipped with advanced control systems, the Raypak 302B and 402B ensure precise temperature regulation and improved energy usage. The digital display provides real-time feedback and diagnostics, enhancing user experience and simplifying troubleshooting. These models are also compatible with various building management systems, providing users with versatility in integration to optimize building performance.

In addition to their technological advancements, these boilers are designed with user safety and convenience in mind. They include features such as built-in safety controls, easy access for service and maintenance, and a compact footprint to fit into tight spaces. Their robust construction ensures durability, which is crucial for systems that operate under high demand.

Moreover, both models have been engineered to succeed in various climates, making them reliable choices for users in diverse geographical locations. With their energy-efficient operation, reliable performance, and advanced features, the Raypak 302B and 402B embody quality and innovation in the heating market, ensuring comfortable environments while lowering energy costs and environmental footprints.
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