Rheem Professional Classic Plus Series: Induced Draft- Manuals

6 IMPORTANT SAFETY INFORMATION. READ ALL INSTRUCTIONS BEFORE USING. ! 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 O...

Combustion Air Inlet Openings 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 cop...

8 Installing the water heater Combustion and Ventilation Air Proper operation of the water heater requires air for combustion and ventilation. Provisions for combustion and ventilation air must comply with referenced codes and standards.DO NOT block or obstruct any of the combustion air inlet openin...

Thermal Expansion Determine if a check valve exists in the inlet water line. Check with your local water utility company. It may have been installed in the cold water line as a separate back flow preventer, or it may be part of a pressure reducing valve, water meter or water softener. A check valve ...

10 Installing the water heater A new combination temperature and pressure relief valve, complying with the Standard for Relief Valves and Automatic Gas Shut-Off Devices for Hot Water Supply Systems, ANSI Z21.22, is supplied and must remain in the opening provided and marked for the purpose on the wa...

Pressure Testing the Gas Supply System The water heater and its manual gas shut- off valve must be disconnected from the gas supply piping system during any pressure testing of that system at pressures in excess of 3/8 psi (10.5” w.c.) for natural gas, or 1/2 psi (14” w.c.) for LP gas. The water hea...

12 Installing the water heater Venting Double wall vent connectors must be securely attached to the inducer outlet to connect the water heater to the gas vent (see figures below). The vent connectors must be the same size (diameter) as the outlet or larger, never smaller.Excerpts of the most commonl...

Installing the water heater 14 CAUTION! Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING! If local codes permit, the water heater may be connected to electric service with the power cord ...

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...

Installing the water heater 16 DO ❑ DO check inlet gas pressure with main burner ON to ensure that it is within the range specified on the rating plate. ❑ DO provide adequate air for combustion and ventilation as discussed in the Use and Care Manual and the National Fuel Gas Code. ❑ DO maintain prop...

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

18 Typical Piping Diagram for Combination Potable/Space Heating Installation Spring loaded check valve in heating unit hot water supply line and cold water return line (not supplied with water heater) NOTE: This check valve is incorporated in some heating units. Refer to the installation instruction...

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 resul...

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 Time/Temperature Relationship in Scalds Water Temperature Time To Produce a Serious Burn 120°F More than 5 minutes 125°F 1 1 / 2 to 2 minutes 130°F About 30 seconds 135°F About 10 seconds 140°F Less than 5 seconds 145°F Less than 3 seconds 150°F About 1 1 / 2 seconds 155°F About 1 second Table co...

22 Sequence of Operation… 1. During initial start-up or a call for heat, the control will verify the vacuum switch is open. 2. Once the control verifies the blower vacuum switch is open, the control will energize the blower motor for the pre-purge sequence (approximately 5 seconds). 3. The control w...

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) gas cock or manual shutoff valve before draining water. ! DANGER: Before manually operating the temperature and pressure relief valve, make certain no one w...

24 Care and cleaning of the water heater Housekeeping Visually inspect the pilot.To ensure sufficient ventilation and combustion air supply, proper clearances must be maintained. When installed in a closet, DO NOT block or obstruct any of the combustion air inlet openings located around the perimete...

26 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...

28 Gas Valve LED Codes CAUTION: Make certain power to water heater is “OFF” before removing protective cover FOR ANY REASON. CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING. CAU...

29 Replacement Parts For 29 gallon models using natural or LP 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 no...

32 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 is unavailable, refe...