Raypak 302-902 manual Support of Vent Stack, Vent Terminal Location General

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Support of Vent Stack

The weight of the vent stack or chimney must not rest on the boiler vent connection. Support must be provided in compliance with applicable codes. The vent should also be supported to maintain proper clearances from combustible materials.

Use insulated vent pipe spacers where the vent passes through combustible roofs and walls.

Vent Terminal Location

NOTICE:

General

During winter months check the vent cap and make sure no blockage occurs from build up of snow. Condensate can freeze on the vent cap. Frozen condensate on the vent cap can result in a blocked flue condition.

Give special attention to the location of the vent termination to avoid possibility of property damage or personal injury.

a)Gases may form a white vapor plume in winter. The plume could obstruct a window view if the termination is installed in close proximity to windows.

b)Prevailing winds could cause freezing of condensate and water/ice build-up on building, plants or roof.

c)The bottom of the vent terminal and the air intake shall be located at least 12 inches above grade.

d)Un-insulated single-wall metal vent pipe shall not be used outdoors on cold climates for venting gas utilization equip- ment.

e)Through-the-wall vents for Category II and IV appliances and non-categorized condensing appliances shall not termi- nate over public walkways or over an area where condensate or vapor could create a nuisance or hazard or could be detrimental to the operation of regulators, relief valves, or other equipment. Where local experience indicates that condensate is a problem with Category I and III appliances, this provision shall also apply.

f)Locate and guard vent termination to prevent accidental contact by people or pets.

g)DO NOT terminate vent in window well, stairwell, alcove, courtyard or other recessed area, unless previously approved by local authority.

h)DO NOT terminate above any door, window, or gravity air intake. Condensate can freeze, causing ice formations.

i)Locate or guard vent to prevent condensate from damaging exterior finishes. Use a 2’ x 2’ rust resistant sheet metal backing plate against brick or masonry surfaces.

j)DO NOT extend exposed vent pipe outside of building. Condensate could freeze and block vent pipe.

US Installations - Refer to latest edition of National Fuel Gas Code

Vent termination requirements are as follows:

a)Vent must terminate at least four (4) feet below, four (4) feet horizontally, or one (1) foot above any door, window or gravity air inlet to the building.

b)The vent must not be less than seven (7) feet above grade when located adjacent to public walkways.

c)Terminate vent at least three (3) feet above any forced air inlet located within ten (10) feet.

d)Vent must terminate at least four (4) feet horizontally, and in no case above or below unless four (4) feet horizontal distance is maintained, from electric meters, gas meters, regulators, and relief equipment.

e)Terminate vent at least six (6) feet away from adjacent walls.

f)DO NOT terminate vent closer than five (5) feet below roof overhang.

g)The vent terminal of a direct vent appliance with an input over 50,000 Btu per hour shall require a 12-inch vent terminal clearance.

h)Terminate vent at least one (1) foot above grade, including normal snow line.

i)Multiple direct vent installations require a four (4) foot clearance between vent caps.

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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 Section D Water Piping General LOW Temperature SystemTemperature & Pressure Gauge 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 Check Power Source Section I Electrical Power ConnectionsCheck the 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 Ignition Control Module High Limit Manual ResetFlow Switch 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 Preparation for START-UP Section N HI-DELTA Initial START-UPTools Needed 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 ScheduleSemi-Annually Preventive Maintenance ScheduleWeekly 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.

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