Raypak 992B-1262B 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.

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: 10 in. for Model 992B; 12 in. for Models 1262B and 1532B; 14 in. for Models 2002B and 2072B; and 16 in. for 2342B.

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

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

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.

Fig. 27: Natural Draft Vertical Venting

(Category I)

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 Page Contents Pay Attention to These Terms Before Installation Installations at ElevationProduct Receipt Model IdentificationComponent Locations Component Locations BackGeneral Information Model Quantity Vent Size Gas Burners BlowersValves Model Burners per Valve Stages Fire at StageTime/Temperature Relationships in Scalds General SafetyWater Time to Produce Serious Temp Burn Installation Installation CodesEquipment Base StackingTable D Vent/Air Inlet Termination Clearances Outdoor Installations Indoor InstallationsClearances 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 OperationHydronic Heating Temperature & Pressure GaugePump Selection Pressure 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 HeaterGas Supply Pool/Spa Water Chemistry Water HardnessPH of Water Total Dissolved SolidsGas Supply Connection Reversing Gas Supply ConnectionModel Table I Maximum Equivalent Pipe LengthElectrical Power Connections Check the Power SourceGas Supply Pressure Field-Connected ControllersField Wiring Connection Making the Electrical ConnectionsOn-Off Wiring Connections Venting Flue Exhaust TeeModel Diameter Order Number Appliance CategoriesSupport of Vent Stack Vent Terminal LocationCombustion Exhaust Certified Combustion AirCanadian Installations InstallationsChanging the Flue Outlet Venting Installation Tips Venting ConfigurationsInstallation Natural Draft Vertical Venting CategoryTermination Common Venting SystemCertified Vertical Venting Combustion Air Air Inlet Model HeightHorizontal Through-the-Wall Venting Category Horizontal Through-the-Wall Venting CategoryDirect Vent Horizontal Through- the-Wall Model Certified Maximum Combustion Air InletVenting Equivalent Material Vent Length Intake PipeDirect Vent Vertical Direct Vent VerticalControls Outdoor InstallationFreeze Protection Heater Sequence of Operation Models 992B-1262BExternal Lights Color Indication Models 1532B 1802B Page Page Models 2002B 2342B Page Page High Limit Manual Reset Flow SwitchIgnition Module Operating ControlHigh and Low Gas Pressure Switches Low Water Cut-Off OptionalUDB Diagnostic Board UDB Fault HistoryWater Piping 87%-Efficiency Boilers Special InstructionsVenting Appliance Categories Vent Terminal Location Vertical Venting CategoryCondensate Management Equivalent Certified Maximum Combustion Air Air Inlet Model VentingMax. Length Material Vent Length Direct Vent Horizontal Through- the-Wall 992BE 75’ 100’ 1262BE Galvanized Steel 1532BE Category 25’ Wiring Diagram Models 992B-1262B Wiring Diagram Models 1532B-2342B 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 Page
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