Rheem Professional Classic Plus Series: Atmospheric Use and Care Manual Page 1

AP13311-2 (10/06)FOR YOUR SAFETY!— Do not store or use gasoline or otherflammable vapours or liquids or othercombustible materials in the vicinity of

10Installing the water heater.A new combination temperature and pressure relief valve, complying with the Standard for Relief Valvesand Automatic Gas

11WARNING: Do not attempt to convert this water heater for use with a different type of gas other than the typeshown on the rating plate. Such convers

12Installing the water heater.The water heater must be installed with the factory supplied draft hood in place.VentingInsulation BlanketsVent connecto

13For increased energy efficiency, somewater heaters have been supplied withtwo 24” (61 cm) sections of pipeinsulation.Please install the insulation,

14Installation ChecklistA. Water Heater LocationB. Water SupplyC. Gas SupplyD. Relief ValveE. Venting❑ Close to area of vent.❑ Indoors and protecte

Tee fitting for vertical hotwater supply lines.Hot watersupply to houseFrom HOToutlet on water heaterHot watersupply to heatingunitSupplemental instru

16Lighting the water heater.Before operating this water heater, be sure to read and follow the instructions on the label picturedbelow and all other l

17Time/Temperature Relationship in ScaldsWater Temperature Time To Produce a Serious Burn120°F(49°C) More than 5 minutes125°F(52°C) 11/2 to 2 minutes1

18Operating the water heater.Water Temperature Setting…Maximum water temperatures occur justafter the burner has shut off. To determinethe water tempe

19Care and cleaning of the water heater.Draining the Water HeaterCAUTION: Shut off gas to the waterheater at the gas control (thermostat) gascock or m

Safety InformationSafety Precautions. . . . . . . 3–6LP Gas Models . . . . . . . . . . . 5Installation InstructionsLocation . . . . . . . . . . . .

20Venting System InspectionThe water heater’s internal flue must beinspected annually to be certain it is cleanby removing the draft hood and fluebaff

21Problem Possible Causes What To DoCondensation This usually happens when  This is normal. After the water in the tank warms a new water heater is

Problem Possible Causes What To DoRumbling noise Scale and sediment  Clean tank.in tank.Relief valve Pressure build up  This is an unacceptable con

23Replacement Parts.For 30, 40,50, and 60 gallon models using natural or LP gas.Instructions For Placing a Parts OrderCall 1-800-268-6966.All parts or

IF YOU NEED SERVICE1. Should you have any questions about your new water heater, or if it requiresadjustment, repair, or routine maintenance, it is su

Be sure to read and understand the entire Use and Care Manual before attempting to install or operatethis water heater. It may save you time and money

Time/Temperature Relationship in ScaldsWater Temperature Time To Produce a Serious Burn120°F (49°C) More than 5 minutes125°F (52°C) 11/2 to 2 minutes1

5LP and Natural gas have an odorant added to aid in detecting a gas leak. Some peoplemay not physically be able to smell or recognize this odorant. If

6Have the installer show you the location of the gas shut-off valve and how to shut it off ifnecessary. Turn off the manual shut-off valve if the wate

Installing the water heater.This water heater must be installed in accordance with these instructions, local codes, utility companyrequirements, and/o

8Installing the water heater.Combustion and Ventilation AirProper operation of the water heaterrequires air for combustion andventilation. Provisions

9Thermal ExpansionDetermine if a check valve exists in the inlet water line. Check with your local water utilitycompany. It may have been installed i