Rheem Professional Classic Plus Series: Heavy Duty Ultra Low NOx Atmospheric- Manuals

5 WARNING VERY HOT WARM D E F COOLER HOTTER B C Temperature Setting for 180°F Thermostat Display ▼ B C D E F Burns on Adult Skin ▼ = approx. 120°F (49°C) ● ○ ○ ○ ○ ○ More than 5 minutes B = approx. 130°F (54°C) ● ● ○ ○ ○ ○ About 30 seconds C = approx. 140°F (60°C) ○ ● ○ ○ ○ ○ Less than 5 seconds D =...

6 LP and Natural gas have an odorant added to aid in detecting a gas leak. Some people may not physically be able to smell or recognize this odorant. If you are unsure or unfamiliar with the smell of LP or natural gas, ask the gas supplier. Other conditions, such as “odorant fade”, which causes the ...

7 ! WARNING! For your safety, the information in this manual must be followed to minimize the risk of fire or explosion, electric shock, or to prevent property damage, personal injury, or loss of life. FOR INSTALLATIONS IN THE STATE OF CALIFORNIA California Law requires that residential water heater...

8 Installing the water heater. This water heater must be installed in accordance with these instructions, local codes, utility company requirements, and/or in the absence of local codes, use the latest edition of the American National Standard/National Fuel Gas Code. A copy can be purchased from eit...

14 Installing the water heater. Wiring This water heater may be connected to electric service with the power cord provided ( DO NOT use an extension cord). A grounding receptacle is required.If local codes do not permit the use of cord connections, a 120 v, 50/60 Hz power supply, with suitable disco...

15 For increased energy efficiency, some water heaters have been supplied with two 24” sections of pipe insulation. Please install the insulation, according to the illustrations above, that best meets your requirements. Typical vertical piping arrangement Typical horizontal piping arrangement Hot an...

17 Installation Checklist A. Water Heater Location B. Water Supply C. Gas Supply D. Relief Valve E. Venting q Close to area of vent. q Indoors and protected from freezing temperatures. q Proper clearance from combustible surfaces observed and water heater not installed on carpeted floor. q Sufficien...

Tee fitting for vertical hot water supply lines. Hot water supply to house From HOT outlet on water heater Hot water supply to heating unit Supplemental instructions for gas water heaters installed in potable/space heating applications. Local codes or plumbing authority requirements may vary from th...

19 Lighting the water heater. Before operating this water heater, be sure to read and follow the instructions on the label pictured below and all other labels on the water heater, as well as the warnings printed in this manual. Failure to do so can result in unsafe operation of the water heater resu...

20 Safety Precautions DO turn off manual gas shut-off valve if water heater has been subjected to over heating, fire, flood, physical damage or if the gas supply fails to shut off. DO NOT turn on water heater unless it is completely filled with water. DO NOT turn on water heater if cold water supply...

21 Water Temperature Setting… Maximum water temperatures occur just after the burner has shut off. To determine the water temperature, turn on a hot water faucet and place a thermometer in the water stream.To avoid any unintentional changes in water temperature settings, the combination gas control ...

22 Sequence of Operation During initial start-up or a call for heat, the control will verify the vent vacuum switch is open.Once the control verifies the vent vacuum switch is open, the control will energize the blower motor for the pre-purge sequence (approximately 5 seconds).The control will verif...

23 Care and cleaning of the water heater. Draining the Water Heater ! CAUTION: Shut off gas to the water heater at the gas control (thermostat) manual shut-off valve before draining water. ! DANGER: Before manually operating the temperature and pressure relief valve, make certain no one will be expo...

24 Venting System Inspection Inspect the gas venting system and the chimney.Make certain the vent connector from the draft hood to the chimney is properly positioned and securely attached.If after inspection of the vent system you found soot or deterioration; call the local gas utility to correct th...

25 Before You Call For Service… Troubleshooting TipsSave time and money! Review the charts on the following pages first and you may not need to call for service. This water heater incorporates a combustion shut off device that shuts the operation of the water heater down if undesirable combustion co...

27 Gas Valve LED Error Codes LED Status Problem Solution ○ ○ ▼ A B C ● ○ ○ ● ○ ○ An open earth ground circuit to the ignition system. 1. Check that the earth ground connection is properly connected. 2. Check that the ground conductor on the water heater is properly connected. ○ ○ ▼ A B C ● ○ ● ○ ● ○...

31 Replacement Parts. For 75 and 98 gallon models using natural gas. Instructions For Placing a Parts Order All parts orders should include: The model and serial number of the water heater from the rating plate. Specify type of gas (natural or LP) as marked on the rating plate. Part description (as ...

32 IF YOU NEED SERvICE 1. Should you have any questions about your new water heater, or if it requires adjustment, repair, or routine maintenance, it is suggested that you first contact your installer, plumbing contractor or previously agreed upon service agency. In the event the firm has moved, or ...