A.O. Smith 317443-000 instruction manual Venting, Vent Pipe Termination, Planning the Vent System

Page 20

VENTING

Never operate the water heater unless it is vented to the outdoors.

The instructions in this section of the manual must be followed to avoid choked combustion or recirculation of flue gases. Such conditions cause sooting of the combustion chamber, burners and flue tubes and creates a risk of asphyxiation.

VENT PIPE TERMINATION

The first step is to determine where the vent pipe will terminate. See Figures 15, 16, and 17. The vent may terminate through a sidewall as shown in Figures 15 and 16 or through the roof as shown in Figures 17 and 18.

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, 12.9.1 through 12.9.4). See Figures 13 and 14.

Instructions on proper installation through a sidewall are provided in Figures 15A, 15B, 15C, and 16.

Plan the vent system layout so that proper clearances are maintained from plumbing and wiring.

Vent pipes serving power vented appliances are classified by building codes as “vent connectors”. Required clearances from combustible materials must be provided in accordance with information in this manual under Facts to Consider About Location and INSTALLING THE WATER HEATER, and with the National Fuel Gas Code and local codes.

PLANNING THE VENT SYSTEM

Plan the route of the vent system from the exhaust elbow to the

planned location of the vent terminal.

1.Layout total vent system to use a minimum of vent pipe and elbows.

2.This water heater is capable of venting flue gases equivalent to 45’ (13.7 m) of 2” pipe, 128’ (39 m) of 3” pipe as listed in Table 2.

Table 2

Number of

2” Maximum

3” Maximum

90° Elbows

Pipe - ft. (m)

Pipe - ft. (m)

1

40 (12.19)

120 (36.57)

2

35 (10.66)

115 (35.05)

3

30 (9.14)

110 (33.52)

4

25 (7.62)

105 (32)

5

20 (6.09)

100 (30.48)

6

15 (4.57)

95 (28.95)

The minimum vent length for each pipe size is one 90° plus 2’ (61 cm) of straight pipe and the appropriate termination.

NOTE: The equivalent feet (m) of pipe listed above are exclusive of the termination. That is, the termination, with an installed screen, is assumed to be in the system and the remainder of the system must not exceed the lengths discussed above.

3.The exhaust elbow assembly is designed to accept only straight sections of 2” pipe. To start, a minimum 2” (5.1cm) maximum

6” long of 2” pipe must be inserted and glued to the exhaust elbow assembly if utilizing 3” vent pipe. Use the same method with the blower inlet if a direct vent configuration is utilized.

If using 2” inch vent pipe:

A minimum of 2” (5.1cm) diameter vent pipe must be attached to the exhaust elbow assembly. The total system cannot exceed the lengths discussed above, where each elbow is equal to 5 equivalent feet (1.5m) of straight pipe.

If using 3” inch vent pipe:

Two inches (5.1cm) of 2” pipe must be attached to the exhaust elbow assembly before adding a reducer to acquire the desired pipe diameter. An appropriately sized 45 degree elbow (supplied locally-a schedule 40 DWV) vent terminal must be obtained with an equivalent screen (supplied in vent kit). The total system cannot exceed the equivalent pipe lengths discussed above where each elbow is equal to 5 feet (1.5m) of straight pipe (3” vent pipe).

NOTE: This unit can be vented with PVC pipe materials (DWV ASTM-D2665 or CSA B181.2; Schedule 40, 80, 120 ASTM-D1785 or CSA B137.3; or SDR Series ASTM-D2241 or CSA B137.3), CPVC pipe materials (CPVC41 ASTM-D2846 or CSA B137.6; Schedule 40, 80 ASTM-F441 or CSA B137.6; or SDR Series ASTM-F442), ABS pipe materials (Schedule 40 DWV ASTM-D2661 or CSA B181.1. The fittings, other than the TERMINATION should be equivalent to PVC-DWV fittings meeting ASTM D-2665 (Use CPVC fittings, ASTM F-438 for CPVC pipe and ABS fittings, ASTM D-2661/3311 for ABS pipe). If CPVC or ABS pipe and fittings are used, then proper cement must be used for all joints, including joining the pipe to Termination (PVC Material). If local codes do not allow the use of the PVC termination when a material other than PVC is used for venting, then an equivalent fitting of that material may be substituted if the screen in the PVC terminal is removed and inserted into the new fitting.

20

Page 19 Page 21
Image 20
Page 19 Page 21
Contents 317443-000 Whenever maintenance adjustment or service is requiredPrinted Table of contents Safe installation, use and service ApprovalsGrounding Instructions General safety informationPrecautions Hydrogen Gas Flammable General safety information Fire or Explosion Hazard Preparing For The Installation IntroductionAbbreviations Used QualificationsFeatures and components Replacement Parts and Deliming ProductsInstallation consideration Rough in DimensionsRough-In-Dimensions Recovery capacity based on 96% thermal efficiencyProperty Damage Hazard Locating The Water HeaterUnconfined Space Combustion AIR and VentilationInsulation Blankets Confined Space Fresh Air Openings For Confined SpacesOutdoor Air Through Two Openings Outdoor Air Through One OpeningOutdoor Air Through Two Horizontal Ducts Air From Other Indoor SpacesInstalling the new water heater Power SupplyChemical Vapor Corrosion Water PipingSpace heating and potable water system Mixing ValvesDishwashing Machines Valve and Pipe Insulation if supplied Closed Water SystemsThermal Expansion Temperature-Pressure Relief Valve Valve Discharge Pipe RequirementsGas piping Condensate PipingHigh Altitude Installations Sediment Traps Filling the Water HeaterPlanning the Vent System VentingVent Pipe Termination Installation of Vent System Vent Terminal INSTALLATION, SidewallInstallation Requirements Commonwealth of Massachusetts Installation of Carbon Monoxide DetectorsApproved Carbon Monoxide Detectors SignageTermination Clearances Sidewall Power Vent Power VentTermination Clearances Sidewall Direct Vent Direct VentInstallation Sequence Sequence of INSTALLATIONS, aVent Termination a Direct Vent terminal installation Vent Terminals Supplied with Heater Must be UsedFlat Roof Installation Concentric vent installation Safety ConsiderationsKIT Components Description QtyConcentric Termination Flat Roof Clearance MULTI-CONCENTRIC Vent Terminations Direct vent diagram Vent Pipe Preparation Step B Step EStep F Step GBlower Prover Switch Blocked Exhaust SwitchBlocked Intake Switch ON/OFF SwitchPower Vent Wiring Schematic Figure Do not TRY to Light the Burner by Hand Do not try to light the burner by handWhat to do if YOU Smell GAS Temperature regulation HI Limit Switch ECOControl System Navigation Control system operationOverview Icon Description Status IconsOperating States Control System MenusUser Settings & Control System Menus Temperatures Operating Set Point And Differential AdjustmentTemperatures Heater StatusECO Contact , Blocked Inlet PS , Blocked Outlet PS , Blower Blower Low On , Blower High On displays whetherDisplay Settings Heater InformationCurrent Fault Fault HistoryFault Occurrence Restore Factory DefaultsService Contact Information Service Contact InformationOperational Conditions For your informationStart UP Conditions Periodic maintenance Temperature-Pressure Relief Valve OperationVenting System Inspection Anode ROD InspectionTo Flush the Water Heater Storage Tank ServiceTo drain the water heater storage tank Maintenance Temperature-Pressure Relief Valve TestLeakage checkpoints Troubleshooting Installation ChecklistSequence Of Operation Flow Chart YES noOperational Problems Fault And Alert ConditionsResetting Control System Lock Outs Diagnostic ChecksFault And Alert Messages AC ReversedBlower Prover Failure Page Page Page Limited Warranty Fill in Warranty and Keep for Future Reference

100 Power Vent DV Series 120, 317443-000 specifications

The A.O. Smith 317443-000,100 Power Vent DV Series 120 is an advanced water heating solution designed to enhance efficiency and performance for residential applications. As part of A.O. Smith's renowned lineup, this model embodies the company's commitment to innovation and energy conservation.

One of the main features of the DV Series 120 is its power venting capability. This technology allows for flexible installation options, as it can vent vertically or horizontally, accommodating various home configurations. It utilizes a fan-assisted venting system, which efficiently expels exhaust gases, ensuring safe operation even in tight spaces.

The unit's energy efficiency is another standout characteristic. Equipped with a high-efficiency gas burner, the DV Series 120 optimizes fuel consumption, resulting in lower utility bills while providing reliable hot water when needed. Its impressive Energy Factor (EF) ratings make it an environmentally friendly choice, aligning with modern standards for green building practices.

Durability is also a significant focus of the A.O. Smith 317443-000,100 Power Vent model. Constructed with a glass-lined tank and a robust anode rod, this water heater is designed to resist corrosion and extend its lifespan. This construction enhances performance reliability while minimizing maintenance needs, making it a smart investment for homeowners.

Smart technologies are integrated into the DV Series 120, featuring an intelligent control system that provides various operational insights. The built-in diagnostic features allow homeowners to monitor performance and identify potential issues early, reducing the likelihood of unexpected failures. This control system can also enable more precise temperature management, enhancing both comfort and efficiency.

Safety is paramount in the design of the A.O. Smith 317443-000,100. The unit comes equipped with safety features such as a built-in flame rollout sensor and an automatic shut-off system to protect against potential hazards. These features ensure peace of mind for users, allowing them to confidently rely on their hot water supply.

In summary, the A.O. Smith 317443-000,100 Power Vent DV Series 120 stands out as a high-efficiency water heating solution, combining innovative venting technologies, durability, smart features, and safety mechanisms. This model is an ideal choice for homeowners seeking a reliable and efficient hot water system that meets modern energy standards.
Top Page Image Contents