American Water Heater HCG3 130T 300 instruction manual

Page 19

Outdoor Air Through Two Vertical Ducts

 

Air From Other Indoor Spaces

The illustrations shown in this section of the manual are a reference for the openings that provide fresh air into confined spaces only.

Do not refer to these illustrations for the purpose of vent installation. See Venting Installation on page 21 for complete venting installation instructions.

Figure 13

The confined space shall be provided with two permanent vertical ducts, one commencing within 12 inches (300 mm) of the top and one commencing within 12 inches (300 mm) of the bottom of the enclosure. The vertical ducts shall communicate directly with the outdoors. See Figure 13.

Each duct opening shall have a minimum free area of 1 square inch per 4,000 Btu/hr (550 mm2 per kW) of the aggregate input rating of all appliances installed in the enclosure.

When ducts are used, they shall be of the same cross sectional area as the free area of the openings to which they connect. The minimum dimension of rectangular air ducts shall be not less than 3 inches.

Figure 14

The confined space shall be provided with two permanent openings, one commencing within 12 inches (300 mm) of the top and one commencing within 12 inches (300 mm) of the bottom of the enclosure. See Figure 14.

Each opening shall communicate directly with an additional room(s) of sufficient volume so that the combined volume of all spaces meets the criteria for an Unconfined Space.

Each opening shall have a minimum free area of 1 square inch per 1,000 Btu/hr (1100 mm2 per kW) of the aggregate input rating of all appliances installed in the enclosure. Each opening shall not be less than 100 square inches (645 cm2).

19

Image 19
Contents Commercial gas water heaters Table Of Contents ANSI/NSF-5 Safe Installation, Use and ServiceOptional Precautions General Safety InformationHydrogen Gas Flammable Fire and Explosion Hazard Fire or Explosion HazardAbbreviations Used Preparing For The InstallationQualified Installer or Service Agency IntroductionBasic Operation Features And ComponentsTop View Components Top ViewSide Views Gas Line Connection Size Installation ConsiderationsRough In Dimensions Recovery CapacitiesIntake Air and Vent Pipe Clearances Service ClearanceLocating The Water Heater Clearance To Combustible MaterialsCirculation Pumps Extended Vent TerminationsOptional Concentric Terminations Hard WaterSupply Gas Line Installation RequirementsPower Supply Gas Pressure RequirementsThermal Expansion Mixing ValvesDishwashing Machines Closed Water SystemsValve Discharge Pipe Requirements Temperature-Pressure Relief ValveCondensate Drain Water Trap Condensate DrainCombustible Material Storage Contaminated AirUnconfined Space Air RequirementsConfined Space Outdoor Air Through Two Horizontal Ducts Fresh Air Openings For Confined SpacesOutdoor Air Through Two Openings Outdoor Air Through One OpeningPage Inspection Commonwealth of MassachusettsGeneral Venting Information Venting InstallationGeneral Venting Instructions Venting Requirements Power Vent Installation Venting Installation SequenceDirect Vent Installation Intake AIR Screen Balance Plate Vertical Termination InstallationVertical Termination Direct Vent Sidewall Termination Installation Sidewall Termination InstallationInch Concentric Termination Flat Roof Clearance Concentric Termination InstallationInch Concentric Termination KIT Inch Concentric Termination InstallationVent Pipe is 4 Inch Schedule 40 PVC Inch Concentric Termination Sidewall InstallationEight Concentric Terminations TWO Concentric TerminationsThree Concentric Terminations Four Concentric TerminationsTwo Concentric Terminations Multiple Concentric Termination ArrangementsEight Concentric Terminations Venting Arrangements Power Vent HorizontalDirect Vent Horizontal Direct Vent Horizontal Vent Vertical Intake Direct Vent Vertical Vent Horizontal IntakeDirect Vent Horizontal Concentric Power Vent Termination Clearances Sidewall Power VentDirect Vent Termination Clearances Sidewall Direct VentInstallation Instructions Water Heater InstallationCondensate Drain Installation Installation NotesSupply Gas Line Sizing Metric Units Supply Gas Line InstallationGas Line Sizing Supply Gas Line Sizing U. S. UnitsGas Line Leak Testing Supply Gas Regulator InstallationGas Line Connection Connecting An External Supervisory Control Electrical WiringPower Supply Connections Enable/Disable CircuitThermometers not Supplied Water Piping DiagramsWater Line Connections Valve Discharge PipeThermostat Control Temperature RegulationHigh Temperature Limit Control ECO High Temperature ApplicationsUser Input Buttons Control System OperationOverview Control System NavigationIcon Description Status IconsMenu Description Operating StatesState Description Control System MenusDescription/Action Display User Settings & Control System MenusUpdate Cancel Back HelpChange Back Help Heater Information Description/Action Display Display Settings Description/ActionYES Back AdvancedView Back Help ECOName UpdateService Contact Information Select Back HelpPrior to Start up Start UpInitial Start Up Multiple Appliance Installations Supply Gas Pressure AdjustmentManifold Gas Pressure Adjustment Checking The Firing Rate High Altitude InstallationsTo Turn Off Gas Lighting & Operation Label Lighting The Water HeaterHoneywell Installation Checklist TroubleshootingSequence Of Operation YES no Sequence Of Operation Flow ChartMomentary Ignition Operational ProblemsInstallation Errors Rough Starting, Rough OperationFault And Alert Conditions Possible Causes Check/Repair Displayed Fault/Alert Message Fault And Alert MessagesBlower Prover Failure Draining And Flushing MaintenanceMaintenance Schedule GeneralSediment Removal Filling The Water HeaterLime Scale Removal Vent System Powered Anode RodsDrain Valve and Access Panels Temperature-Pressure Relief Valve TestCCB Central Control Board Layout DiagramsUser Interface Modul AHCG3 130T 300 Wiring DiagramUser AHCG3 130T 400 Wiring DiagramCirculation Pump Wiring Diagrams Water Piping Diagrams Temperature & Pressure Tank Temperature ALT. Cold Water American Storage Tank Water Piping Diagrams Line Temperature Control HOT Water Outlet Pipe T&P to Open Drain Finished Floor Limited Warranty