American Water Heater 6510238 installation instructions Closed System/Thermal Expansion

Page 13

Please note the following:

DO NOT install this water heater with iron piping. The system should be installed only with piping that is suitable for potable (drinkable) water such as copper, CPVC, or polybutylene. DO NOT use PVC water piping.

DO NOT use any pumps, valves, or fittings that are not compatible with potable water.

DO NOT use valves that may cause excessive restriction to water flow. Use full flow ball or gate valves only.

DO NOT use 50/50 tin-lead solder (or any lead based solder) in potable water lines. Use 95/5 tin-antimony or other equivalent material.

DO NOT tamper with the gas valve/thermostat, igniter, thermocouple, or temperature and pressure relief valve. Tampering voids all warranties. Only qualified technicians should service these components.

DO NOT use with piping that has been treated with chromates, boiler seal, or other chemicals.

DO NOT add any chemicals to the system piping which will contaminate the potable water supply.

Closed System/Thermal Expansion

Periodic discharge of the temperature and pressure relief valve may be due to thermal expansion in a closed water supply system. The water utility supply meter may contain a check valve, backflow preventer or water pressure reducing valve. This will create a closed water system. During the heating cycle of the water heater, the water expands causing pressure inside the water heater to increase. This may cause the temperature and pressure relief valve to discharge small quantities of hot water. To prevent this, it is recommended that a diaphragm-type expansion tank (suitable for potable water) be installed on the cold water supply line. The expansion tank must have a minimum capacity of 1.5 U.S. gallons for every 50 gallons of stored water. Contact the local water supplier or plumbing inspector for information on other methods to control this situation.

Important: Do not plug or remove the temperature and pressure relief valve.

13

Image 13
Contents Installation 12-14 Unpacking the Water Heater Installing Your GAS Water HeaterConsumer Information Consumer ResponsibilitiesSite Location Residential Garage InstallationVent Cap Termination Clearances and AccessibilityVent Cap Termination Locations Gas Piping Gas RequirementsGas Pressure Natural GAS Pipe Capacity Table CU. FT./HR Gas Pressure TestingVent Pipe System Combustion Air Supply and VentilationThrough the Wall Venting Optional Vertical Extension Kit Vertical InstallationThrough the Roof Venting Water System Piping Piping InstallationClosed System/Thermal Expansion Temperature & Pressure Relief Valve Temperature and Pressure Relief ValveSpecial Applications Solar InstallationCombination Space Heating/ Potable Water System Water Heater Location Installation ChecklistLighting Instructions Operating Your Water HeaterSteps 3 G. Bottled Propane ModelsBurner Flames Water Temperature RegulationStacking Emergency Shut DownOperational Conditions Self-cleaning Some Models Maintenance of Your Water HeaterDraining and Flushing Month InspectionRemoving the Manifold Assembly Replacement PartsRemoving the Burner from the Manifold Assembly Replacing the Thermocouple Replacing the Manifold AssemblyPiezoelectric Igniter System Testing the Igniter SystemRemoving and Replacing the Gas Control Valve/Thermostat Problem Possible Causes Corrective Action Troubleshooting ChartDefective thermostat Replace thermostat Improper calibration Repair Parts List Repair Parts IllustrationAmerican Water Heater Company. All Rights Reserved