A.O. Smith GDV-40 Sediment Traps Filling the Water Heater, Venting, High Altitude Installations

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SEDIMENT TRAPS

 

FILLING THE WATER HEATER

A drip leg (sediment trap) shall be installed as close to the inlet of the water heater as practical at the time of water heater installa- tion. The sediment trap shall be either a tee fitting with a capped nipple in the bottom outlet or other device recognized as an ef- fective sediment trap. If a tee fitting is used, it shall be installed in conformance with one of the methods of installation shown in Figures 8 and 9.

Contaminants in the gas lines may cause improper operation of the gas control valve that may result in fire or explosion. Before attaching the gas line be sure that all gas pipe is clean on the inside. To trap any dirt or foreign material in the gas supply line, a drip leg (sometimes called a sediment trap) must be incor- porated in the piping. The drip leg must be readily accessible. Install in accordance with the “Gas Piping” section. Refer to the current edition of the “Natural Gas and Propane Installation Code” CAN/CSA-B149.1

HOT WATER

COLD WATER

OUTLET

INTLET

UNION

SHUTOFF

VALVE

 

 

UNION

 

TEMPERATURE

 

AND PRESSURE

 

RELIEF VALVE

DISCHARGE PIPE (DO NOT CAP OR PLUG)

 

DRAIN PAN

DRAIN VALVE

6” MAXIMUM

 

AIR GAP

FLOOR DRAIN

 

FIGURE 10

Never use this water heater unless it is completely full of water. To prevent damage to the tank, the tank must be filled with water. Water must flow from the hot water faucet before turning “ON” gas to the water heater.

To fill the water heater with water:

1.Close the water heater drain valve by turning the handle clockwise (). The drain valve is on the lower front of the water heater.

2.Open the cold water supply valve to the water heater. NOTE: The cold water supply valve must be left open when the water heater is in use.

3.To insure complete filling of the tank, allow air to exit by open- ing the nearest hot water faucet. Allow water to run until a constant flow is obtained. This will let air out of the water heater and the piping.

4.Check all water piping and connections for leaks. Repair as needed.

VENTING

NEVER OPERATE THE HEATER UNLESS IT IS VENTED TO THE OUTDOORS AND HAS ADEQUATE AIR SUPPLY TO AVOID RISKS OF IMPROPER OPERATION, FIRE, EXPLOSION OR ASPHYXIATION.

DO NOT OBSTRUCT THE FLOW OF COMBUSTION AND VENTILATING AIR. ADEQUATE AIR FOR COMBUSTION AND VENTILATION MUST BE PROVIDED FOR SAFE OPERATION.

HIGH ALTITUDE INSTALLATIONS

Installations above 7,700 ft. (2347 m) require replacement of the burner orifice in accordance with the “Natural Gas and Pro- pane Installation Code” CAN/CSA-B149.1. Failure to replace the orifice could result in improper and inefficient operation of the appliance, producing carbon monoxide gas in excess of safe limits, which could result in serious personal injury or death. Contact your gas supplier for any specific changes which may be required in your area.

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Contents Residential GAS Water Heaters Important Definitions Safe INSTALLATION, USE and ServiceGeneral Safety Introduction Table of ContentsGET to Know Your Water Heater Replacement Parts Typical InstallationHotter Water can Scald Mixing Valve UsageFacts to Consider about the Location Locating the NEW Water HeaterVentilation for Appliances Located in Confined Spaces Insulation BlanketsVent Termination Required Ability Installing the NEW Water HeaterInspect Shipment GeneralValve and Pipe Insulation if Supplied TEMPERATURE-PRESSURE Relief ValveClosed Water System Water Potable Heating and Space HeatingGAS Piping GAS Piping with Flexible Connector Sediment Traps Filling the Water Heater High Altitude InstallationsVenting Vent Terminal Clearances Combustion AIR and VentilationVent Connections DV Termination Safety CoverLocating Clearance Hole for Vent High Rise Vent ArrangementSecuring Vent Termination Assembly to the Exterior Wall Vent AssemblyStandard Vent Arrangement Uncompressing the Corrugated TubingOffset Vent Arrangement Figure a Temperature Regulation Temperature RegulationExternal Damage For Your InformationStart UP Conditions Operational ConditionsAIR in HOT Water Faucets Venting System Inspection MaintenancePilot and Main Burner Anode ROD Maintenance Temperature & Pressure Relief ValveDraining Cathodic Protection AnodeDrain Valve Washer Replacement Leakage Checkpoints ServiceProblem Possible Causes Correction Troubleshooting GuidelinesERY Slow HOT Water RecovDrip from Relief Valve Thermostat Fails toPage XCV, XCVL, XCVH, XVR Series Tank PartsXCVT, Xcvx Conditions and ExceptionsClaim Procedure Service and Labor ResponsibilityInstallation Information Limitation on Implied WarrantiesTennessee Waltz Parkway Ashland CITY, TN

186589-004, GDVT-50, GDV-75, GDV-40, GDV-50 specifications

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