! WARNING: This water heater is not suitable for use in manufactured (mobile) homes! Use & Care Manual With Installation Instructions for the Installer Residential Gas - FVIR Certified ® Water Heaters The purpose of this manual is twofold: one, to provide the installer with the basic directions and recommendations for the proper installation and adjustment of the water heater; and two, for the owner–operator, to explain the features, operation, safety precautions, maintenance and troubleshooting of the
Safety Information Safety Precautions. . . . . . . 3–6 FOR YOUR RECORDS LP Gas Models . . . . . . . . . . . . 5 Write the model and serial numbers here: # Installation Instructions Location. . . . . . . . . . . . . . . . . . 7 Water Supply Connections. . . 9 Gas Supply. . . . . . . . . . . . . . . 11 # You can find them on a label on the appliance. Staple sales slip or cancelled check here. Proof of the original purchase date is needed to obtain service under the warranty. Venting. . . . . . . . . .
IMPORTANT SAFETY INFORMATION. READ ALL INSTRUCTIONS BEFORE USING. Be sure to read and understand the entire Use and Care Manual before attempting to install or operate this water heater. It may save you time and money. Pay particular attention to the Safety Instructions. Failure to follow these warnings could result in serious bodily injury or death.
IMPORTANT SAFETY INFORMATION. READ ALL INSTRUCTIONS BEFORE USING. ! DANGER! WATER TEMPERATURE SETTING Safety and energy conservation are factors to be considered when selecting the water temperature setting of a water heater’s gas control. Water temperatures above 125°F can cause severe burns or death from scalding. Be sure to read and follow the warnings outlined on the label pictured below. This label is also located on the water heater.
DANGER! LIQUEFIED PETROLEUM (LP PROPANE OR BUTANE) AND NATURAL GAS MODELS 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 odorant to diminish in intensity, can also hide or camouflage a gas leak.
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 OF CALIFORNIA California Law requires that residential water heaters must be braced, anchored or strapped to resist falling or horizontal displacement due to earthquake motions.
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 either the American Gas Association, 400 N. Capitol Street NW, Washington, DC 20001 as ANSI standard Z223.1 or National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02269 as booklet NFPA 54.
Installing the water heater Inspect Shipment Inspect the water heater for possible damage. Check the markings on the rating plate of the water heater to be certain the type of gas supplied corresponds to the water heater requirements. 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.
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 located in the cold water inlet line can cause what is referred to as a “closed water system”. A cold water inlet line with no check valve or back flow prevention device is referred to as an “open” water system.
Installing the water heater A new combination temperature and pressure relief valve, complying with the Standard for Relief Valves for Hot Water Supply Systems, ANSI Z21.22/CSA 4.4, is factory installed and must remain in the opening provided and marked for the purpose on the water heater. No valve of any type should be installed between the relief valve and the tank.
WARNING: DO NOT attempt to convert this water heater for use with a different type of gas other than the type shown on the rating plate. Such conversion could result in hazardous operating conditions. Gas Supply The branch gas supply line to the water heater should be clean 1/2 in. black steel pipe or other approved gas piping material. A ground joint union or ANSI design certified semi-rigid or flexible gas appliance connector should be installed in the gas line close to the water heater.
Installing the water heater The water heater must be installed with the factory supplied blower assembly in place. Blower Assembly Rubber Coupling Flue Baffle Blower Assembly Installation Connect blower assembly with the electrical connector. Attach Blower Assembly to top pan using the six (6) screws provided (See diagram to the left). DO NOT overtighten screws to ensure plastic does not crack. Install rubber coupling (supplied in the box with water heater) on blower housing and secure it.
Vent Pipe Materials NOTICE: This unit can be vented using only the following recommended pipe material. 2 inch: PVC (Schedule 40, ASTM D1785) 3 inch: PVC (Schedule 40, ASTM D1785) 2 or 3 inch diameter pipe CPVC (Schedule 40, ASTM F441) ABS (Schedule 40, ASTM D2661) The fittings, other than the TERMINATION, should be equivalent to the following: PVC (Schedule 40 DWV, ASTM D2665) CPVC (Schedule 40, ASTM F438) DO NOT mix ABS pipe and fittings with PVC or CPVC pipe fittings.
Installing the water heater Condensate Management and Vent Risers There is no condensate collection and disposal required for Rheem water heaters under most conditions. Installations where the vent run is short or it runs through conditioned space in the home, such as basements or interior walls, DO NOT typically cause condensation and will not require any condensation disposal methods regardless of vent pipe slope.
Maximum and Minimum Vent Lengths for Residential 40 & 50 Gallon Power Vents Minimum vent length for 2 in.vent pipe is one (1) foot of vertical pipe, one (1) 90°elbow, and three (3) feet of horizontal pipe. Maximum Venting information for 2 in. Vents* Maximum Vent Pipe Maximum Vent Pipe Length in Feet (ft) Length in Feet (ft) 0’ - 2,000’ 2,001’ and above.
Installing the water heater Additional Venting Requirements Installations requiring less than one (1) foot of vertical pipe before the first elbow, subtract six (6) feet from the maximum vent length. Less than 1 ft. vertical pipe before first elbow Minimum Vent Restrictor Install the vent restrictor only at the minimum vent lengths listed on page 15 for the model numbers listed below.
Vent Terminal Clearances G v H A D E V B B B RA OPE C V L LE RAB OPE F B A M I X K X v B v v v ED FIX D SE CLO v ED FIX ED S CLO v BLE J B V=Vent Terminal X = Air Supply Inlet Αrea Where Terminal Is Not Permitted US Installations 12 in.
Installing the water heater Additional Considerations DO NOT install vent terminal under any patio or deck. Caulk To help prevent moisture from freezing on walls and under eaves, DO NOT locate vent terminal on the side of a build ing with prevailing winter winds.
Vertical Vent Installation Once the vent terminal location has been determined, make a hole through the roof and interior ceiling to accommodate the vent pipe. Complete the vent pipe installation to the water heater's vent connector fitting on the blower outlet. Support vertical or horizontal lengths as previously mentioned. Install adequate flashing where the vent pipe passes through the roof. Determine the vent terminal height and cut vent pipe accordingly.
Installing the water heater Wiring If local codes permit, the 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 disconnecting means, must be connected to the black and white leads in the heater control enclosure.
120 NEUTRAL Diagram With Optional Electronic Display CAUTION! Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.
Installing the water heater Insulation Blankets WARNING: If local codes require external application of insulation blanket kits the manufacturer’s instructions included with the kit must be carefully followed. Insulation blankets, available to the general public, for external use on gas water heaters are not necessary. The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank heaters.
Installing the Optional User Display The following instructions apply only to water heater models factory supplied with the electronic display option. IMPORTANT NOTICE: This electronic display cannot be added to a water heater not supplied from the factory with an electronic display. NOTICE: DO NOT over tighten to avoid cracking plastic enclosure. Mounting Holes for Transformer Components supplied with user display models: a. O ptional Water Heater Mounting Bracket – AP14752 b.
Installing the Optional User Display 10. T he Water Heater Mounting Bracket features a wiring slot on the top flange and an opening for the wire. Pass the thermostat wire though the Water Heater Mounting Bracket opening. 11. Clean any dust or dirt from water heater jacket to allow proper tape adhesion. 12. R emove tape backing and carefully attach to the heater jacket above the Rheem logo. Allow the thermostat wire to be positioned in the wire slot located on the bracket top flange. 15.
Water Heater Optional User Display - Operation Instructions Display Temperature Setting Limits After power on, all segments on the LCD will be displayed for 2 seconds, (See Diagram A) followed by software revision shown for 2 seconds (See Diagram B). CAUTION: Risk of Scalding I n c r e a s e s w i t h H o t t e r Wa t e r Est.
Water Heater Optional User Display - Operation Instructions Display Temperature Setting Limits The user display setpoint temperature cannot exceed maximum water heater valve setpoint temperature at any time. Max Setting icon appears when the user display setpoint exceeds the water heater gas valve knob setpoint. The water heater gas valve knob below is set to HOT therefore the user display shows Hot as the maximum available setpoint. The customer in this example has chosen to set the temperature to Hot.
Estimated Hot Water Three bars shown on the user display are an estimate of hot water available relative to the temperature setpoint. The chart below describes what each symbol means. Est. Hot Water Tank is full of hot water Est. Hot Water Two thirds of the tank volume available Est. Hot Water One third of the tank volume available Est. Hot Water No hot water available Vacation Mode Error Display The user display features a vacation mode which sets the water heater temperature to Low.
Installing the water heater continued Heat Traps For increased energy efficiency, some water heaters have been supplied with factory installed 3/4 in. NPT heat traps in the hot outlet line and cold water inlet line. These heat traps may require a minimum of one (1) 90° 3/4 in. NPT elbow and may require an additional 90° 3/4 in. NPT elbow or a 3/4 in. coupling depending on your installation needs. See Illustration of nipples and heat traps on page 41. During Installation of this water heater...........
Installation Checklist A. Water Heater Location ❑ 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. ❑ Sufficient fresh air supply for proper operation of water heater. ❑ Air supply free of corrosive elements and flammable vapours. ❑ Provisions made to protect area from water damage. ❑ Sufficient room to service heater.
Supplemental instructions for gas water heaters installed in potable water/space heating applications. Local codes or plumbing authority requirements may vary from the instructions or diagrams provided in this manual and take precedent over these instructions. Combination Potable Water and Space Heating Application Hot water supply to house Hot water supply to heating unit Tee fitting must be installed as shown.
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 resulting in property damage, personal injury, or death. Should you have any problems reading or following the instructions in this manual, STOP, and get help from a qualified person.
Operating the water heater CAUTION: Hydrogen gas can be produced in a hot water system served by this water heater that has not been used for a long period of time (generally two weeks or more). HYDROGEN GAS IS EXTREMELY FLAMMABLE!! To dissipate such gas and to reduce risk of injury, it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system.
Water Temperature Setting… The following is additional information which aid in determining a safe working temperature to meet each household need. 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.
Operating the water heater Sequence of Operation… 34 1. During initial start-up or a call for heat, the control will verify the vacuum switch is open. This water heater is equipped with a flammable vapour sensor that is monitored continuously by the electronic control in all modes of operation. 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).
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 shut-off valve before draining water. ! DANGER: Before manually operating the temperature and pressure relief valve, make certain no one will be exposed to the hot water released by the valve. The water drained from the tank may be hot enough to present a scald hazard and should be directed to a suitable drain to prevent injury or damage.
Care and cleaning of the water heater ! DANGER: Combustible materials, such as clothing, cleaning materials, or flammable liquids, etc., must not be placed against or next to the water heater. Housekeeping Visually inspect the pilot. To ensure sufficient ventilation and combustion air supply, proper clearances must be maintained. DO NOT obstruct or block the Flammable Vapour Sensor. The sensor does not require any maintenance or cleaning. DO NOT expose to cleaning agents.
Vacation and Extended Shut-Down NOTICE: Refer to the Hydrogen Gas Caution in the Operating Instructions. If the water heater is to remain idle for an extended period of time, the power and water to the appliance should be turned off to conserve energy and prevent a build-up of dangerous hydrogen gas. The water heater and piping should be drained if they might be subjected to freezing temperatures.
Before You Call For Service… Troubleshooting Tips Save 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 conditions occur, such as the presence of flammable vapours or blockage of the combustion air inlet openings. Please contact a Qualified Service Technician if this occurs.
Before You Call For Service… Troubleshooting Tips Save 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 conditions occur, such as the presence of flammable vapours or blockage of the combustion air inlet openings. Please contact a Qualified Service Technician if this occurs.
Gas Valve LED Codes LCD CODE For Optional Display None None GAS VALVE LED Short flash once every four seconds “Heartbeat”, alternates bright/dim STATUS/PROBLEM PROBABLE CAUSE SOLUTION IDLE (no call for heat, no fault conditions) Call For Heat (no fault conditions) Low flame signal (control continues to operate) Temperature setpoint achieved and burner is off No solution required Water temperature is below setpoint and burner is on No solution required Pilot tube restriction, carbon buildup on ele
Replacement Parts For 40 and 50 gallon models using natural or LP gas. Instructions For Placing a Parts Order All parts orders should include: he model and serial number of the T water heater from the rating plate. pecify type of gas (natural or LP) as S marked on the rating plate. art description (as noted below) and P number of parts desired. Refer to page 44.
Notes… 42
Notes… 43
IF YOU NEED SERVICE 1 S hould 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, refer to the telephone directory, commercial listings or local utility for qualified service assistance. 2.
