A.O. Smith W/HOT Installation of Vent SYSTEM, Sidewall, Installation of Vertical Vent System

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INSTALLATION OF VENT SYSTEM, SIDEWALL

With the route of the venting system and selection of materials completed, as discussed in the section of this manual titled PLANNING THE VENT SYSTEM, the through the wall vent terminal in place and the first section of piping, up to first elbow, installed at the blower it is time to complete the installation of the venting system for the sidewall installation.

FIGURE 20

Before completing the installation of the venting system be sure to read the sections of this manual discussing the proper method of cutting and cementing PVC pipe and fittings: VENT PIPE PREPARATION.

It is recommended that the completion of the venting system start at the blower assembly and run to the coupling on the inside wall of the vent terminal, Figure18.

The vent system piping should be supported every 5 feet (1.5 m) of vertical run and every 3 feet (91 cm) of horizontal run. All piping and fittings must be joined by the proper procedures as described under: VENT PIPE PREPARATION.

INSTALLATION OF VERTICAL VENT SYSTEM

A proper flashing or "BOOT" should be used to seal the pipe where

it exits the roof. The total vent system should not exceed the equivalent feet of pipe as listed in Table 1.

Provide support for all pipe protruding through the roof. All piping should be properly secured. The vent system piping should be supported every 5 feet (1.5 m) of vertical run and every 3 feet (91 cm) of horizontal run. All piping and fittings must be joined by the proper procedures as described under: VENT PIPE PREPARATION.

FIGURE 21

IMPORTANT

The vent system must terminate so that proper clearances are maintained as cited in local codes or the current edition of the National Fuel Gas Code (ANSI Z223.1) or the Natural Gas and Propane Installation Code (CAN/CSA-B149.1) and as listed below:

1.Vent Termination must extend a minimum of 18 inches (46 cm) above roof or 18 inches (46 cm) above the anticipated snow level to prevent blockage of the vent termination, as shown in Figures 20 and 21.

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Contents Commercial GAS Water Heaters Power Vented GAS Models W/HOT Surface IgnitionImportant Definitions Safe INSTALLATION, USE and ServiceGeneral Safety General Safety Introduction Table of ContentsTypical Installation Replacement Parts and Deliming ProductsRelief Valve Elbow Access Door Condensate Hose and Drain PAN ROUGH-IN-DIMENSIONS Rough-In-DimensionsCapacity and Gas and Electrical Characteristics Mixing Valve Usage Facts to Consider about the Location Locating the NEW Water HeaterInsulation Blankets ALL AIR from Outdoors See Figures 7, 8 ALL AIR from Inside Buildings SeeInstalling the NEW Water Heater Chemical Vapor CorrosionWater Piping Valve and Pipe Insulation if supplied TEMPERATURE-PRESSURE Relief ValveGAS Piping GAS Piping with Flexible ConnectorSediment Traps Vent Pipe AssemblyFilling the Water Heater VentingHorizontal Vent Clearances Canadian Horizontal Vent Clearances Vent Pipe TerminationVent Hoods MAY be Extremely HOT During Operation Condensate Planning the Vent SystemBlower Assembly Installation Installation of Vent SystemVent Terminal INSTALLATION, Sidewall Vent Termination Figure Power Vent Wiring Schematic FigureInstallation of Vertical Vent System Installation of Vent SYSTEM, SidewallVertical VAA Installations Recommended Vent Attenuation Assembly InstallationInch vent Horizontal VAA Installations Inch vent Vertical VAA InstallationsRecommended BRUSH* Size for Primer Cement Applications Vent Pipe PreparationStep E Step BStep F Step GBurner. Do not try to light the burner by hand Power Before ServicingWhat to do if YOU Smell GAS Do not TRY to Light the Burner by HandTemperature Indicators Temperature Adjustment Buttons Temperature RegulationDisplay D E FFor Your Information Start UP ConditionsOperational Conditions Burner Cleaning Periodic MaintenanceVenting System Inspection Burner Operation and InspectionTEMPERATURE-PRESSURE Relief Valve Operation Anode ROD InspectionDraining Leakage Checkpoints ServiceTrouble Shooting Troubleshooting GuidelinesD E F Troubleshooting Guidelines Claim Procedure Service and Repair ExpensesTank ALL Other Parts

W/HOT specifications

A.O. Smith, a leading manufacturer of water heating solutions, has made its mark in the industry with innovative products that combine efficiency, reliability, and advanced technology. Among its standout offerings is the A.O. Smith W/HOT series, designed to meet the diverse needs of residential and commercial customers.

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Overall, the A.O. Smith W/HOT series represents a commitment to innovation and quality in water heating solutions. Its combination of tankless design, advanced technology, and safety features makes it an excellent choice for those seeking efficient and reliable hot water access. Whether for residential or commercial use, A.O. Smith continues to lead the way in delivering top-tier water heating solutions that meet the evolving needs of consumers.