American Water Heater VG6250T100 maintenance, Temperature-Pressure Relief Valve Test

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maintenance

maintenance

Temperature-Pressure Relief Valve Test

Temperature-Pressure Relief Valve TestManual background Burn hazard.

Manual background Hot water discharge.

Manual background Keep clear of Temperature- Pressure Relief Valve discharge outlet.

It is recommended that the Temperature-Pressure Relief Valve should be checked to ensure that it is in operating condition every 6 months.

When checking the Temperature-Pressure Relief Valve operation, make sure that (1) no one is in front of or around the outlet of the Temperature- Pressure Relief Valve discharge line, and (2) that the water discharge will not cause any property damage, as the water may be extremely hot. Use care when operating valve as the valve may be hot.

To check the relief valve, lift the lever at the end of the valve several times, see Figure 37. The valve should seat properly and operate freely.

If after manually operating the valve, it fails to completely reset and continues to release water, immediately close the cold water inlet to the water heater and drain the water heater, see Draining And Flushing on page 47. Replace the Temperature-Pressure Relief Valve with a properly rated/sized new one, see Temperature- Pressure Relief Valve on page 17 for instructions on replacement.

TEMPERATURE-PRESSURE

RELIEF VALVE

DISCHARGE PIPE

Figure 38.

If the Temperature-Pressure Relief Valve on the water heater weeps or discharges periodically, this may be due to thermal expansion.

Note: Excessive water pressure is the most common cause of Temperature-Pressure Relief Valve leakage. Excessive water system pressure is most often caused by “thermal expansion” in a “closed system.” See Closed Water Systems and Thermal Expansion on pages 15 and 16. The Temperature-Pressure Relief Valve is not intended for the constant relief of thermal expansion.

Temperature-Pressure Relief Valve leakage due to pressure build up in a closed system that does not have a thermal expansion tank installed is not covered under the limited warranty. Thermal expansion tanks must be installed on all closed water systems.

Do not plug the Temperature-Pressure Relief Valve opening. This can cause property damage, serious injury or death.

Explosion Hazard

Manual background Temperature-Pressure Relief Valve must comply with ANSI Z21.22- CSA 4.4 and ASME code.

Properly sized temperature- pressure relief valve must be installed in opening provided.

Can result in overheating and excessive tank pressure.

Can cause serious injury or death.

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Contents For Your Safety whenever maintenance adjustment or service is requiredRESIDENTIAL GAS WATER HEATERS Instruction Manualtable of contents safe installation, use and service APPROVALSDANGER general safety information PrecautionsImproper installation, use and service may result in property damage Explosion Hazardgeneral safety information General Safety Information Fire or Explosion HazardBreathing Hazard - Carbon Monoxide Gas Electrical Shock HazardPreparing For The Installation introductionAbbreviations Used Qualificationsfeatures and components REPLACEMENT PARTS AND DELIMING PRODUCTSGet To Know Your Water Heater - Gas Models Control Assemblyinstallation consideration Rough In DimensionsTable 1 - Rough-In-Dimensions Table 2 - Capacity, Gas and Electrical CharacteristicsProperty Damage Hazard Locating The Water HeaterCombustion Air and Ventilation Insulation BlanketsUnconfined Space 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 PipingMixing Valves Dishwashing MachinesSpace Heating and Potable Water System Time to Produce 2nd & 3rdClosed Water Systems Thermal ExpansionT & P Valve and Pipe Insulation if supplied Water Damage Hazard Explosion HazardTemperature-Pressure Relief Valve T&P Valve Discharge Pipe RequirementsGas Piping Supply Gas RegulatorCondensate Piping SEDIMENT TRAPSHigh Altitude Installations Filling the Water HeaterVenting If using 2” inch vent pipeIf using 3” inch vent pipe VENT PIPE TERMINATIONINSTALLATION OF VENT SYSTEM VENT TERMINAL INSTALLATION, SIDEWALLInstallation Requirements - Commonwealth of Massachusetts Installation of Carbon Monoxide DetectorsCommonwealth of Massachusetts Approved Carbon Monoxide DetectorsTermination Clearances Sidewall Power Vent POWER VENTTermination Clearances Sidewall Direct Vent Installation Sequence SEQUENCE OF INSTALLATIONS, FIGURE 15AVent Termination - Figure 15A DIRECT VENT terminal installation Figure 15BVERTICAL VENT TERMINAL INSTALLATION Flat Roof InstallationConcentric vent installation SAFETY CONSIDERATIONSINSTALLATION PROCEDURE 1 ROOF TERMINATION, see Figure Table 6 - KIT COMPONENTSCONCENTRIC TERMINATION FLAT ROOF CLEARANCE PROCEDURE 2 SIDE WALL TERMINATION, see FigureFigure 23A MULTI-CONCENTRIC VENT TERMINATIONS direct vent diagram Vent Pipe Preparation RECOMMENDED BRUSH* SIZE FOR PRIMER AND CEMENT APPLICATIONS1. INITIAL PREPARATION 2. SELECTION OF MATERIALSD. Inspection, cleaning, priming STEP E F. Joint assemblySTEP F G. Cleanup and joint movement B. DeburringControls and Switches BLOWER PROVER SWITCHBLOCKED EXHAUST SWITCH BLOCKED INTAKE SWITCHPower Vent Wiring Schematic - Figure WIRE TO GROUND CHECK INDICATES ZERO VOLTAGETHIS WATER HEATER IS POLARITY SENSITVE BEFORE APPLYING ELECTRICITY TO THIS HEATER BE CERTAIN THAT SUPPLY NEUTRALFOR YOUR SAFETY READ BEFORE LIGHTING OPERATING INSTRUCTIONSTO TURN OFF GAS TO APPLIANCE WARNING TURN OFF ALL ELECTRIC POWER BEFORE SERVICINGtemperature regulation HI LIMIT SWITCH ECOTime to Produce 2nd & 3rd Degreeadjust user settings control system operationOperating Set Point 120FIcon DescriptionStatus Icons State MenuOperating States Control System MenusUser Settings & Control System Menus MENUHELP Main Menu140F Heater StatusDisplay Settings Heater InformationTemperature Units Backlight DelayFault History Fault OccurrenceRestore Factory Defaults Blocked ExhaustService Contact Information Show Contact InformationChange Contact Name Current Contact Infofor your information Start Up ConditionsOperational Conditions SMOKE/ODORperiodic maintenance Venting System InspectionAnode Rod Inspection Temperature-Pressure Relief Valve OperationService Draining and FlushingBurn harzard Hot water discharge Keep hands clear of drain valve dischargemaintenance Temperature-Pressure Relief Valve Testleakage checkpoints troubleshooting Installation ChecklistWater Heater Location VentingSequence Of Operation Flow Chart YESNOOperational Problems Fault and Alert ConditionsBurn Hazard Replacement PartsElectrical Shock Hazard Resetting Control System Lock OutsDiagnostic Checks AC Reversed Ignition FailureLow Igniter Current Blocked ExhaustBlower Prover Failure Blower Prover OpenBlocked Air Intake Energy Cut Out ECOPage Page Page LIMITED RESIDENTIAL GAS WARRANTY SERVICE AND LABOR RESPONSIBILITYCLAIM PROCEDURE CONDITIONS AND EXCEPTIONSAmerican Water Heater Product Service and Support PO Box 1597, 500 Princeton Road Johnson City, TNCopyright 2011 American Water Heaters. All rights reserved