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DO NOT destroy this manual.
Please read carefully and keep in
a safe place for future reference
WARNING
If the information in these
instructions is not followed exactly,
a fire or explosion may result
causing property damage, personal
injury or death.
FOR YOUR SAFETY!
• DO NOT store or use gasoline,
other flammable vapors or liquids
or other combustible materials
in the vicinity of this or any other
appliance. Doing so may result in
a explosion or fire.
-WHAT TO DO IF YOU SMELL GAS
• DO NOT try to light any appliance.
• DO NOT touch any electrical
switch.
• DO NOT use any phone in your
home.
• Immediately call your gas
supplier from a neighbor's phone.
And follow the gas supplier's
instructions.
• If you cannot reach your gas
supplier, call the fire department.
• DO NOT return to your home until
authorized by the gas supplier or
fire department.
-ALWAYS REFER TO THIS MANUAL
• Installation and service must be
performed by a qualified installer,
service agency, or gas supplier.
AP21831 Rev 02
RESIDENTIAL
RESIDENTIAL
SUPER HIGH EFFICIENCY
SUPER HIGH EFFICIENCY
WATER HEATER
WATER HEATER
USE & CARE MANUAL
USE & CARE MANUAL
®
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Table of Contents
Related Manuals for Rheem Maximus
Summary of Contents for Rheem Maximus
- Page 1 RESIDENTIAL RESIDENTIAL DO NOT destroy this manual. Please read carefully and keep in a safe place for future reference SUPER HIGH EFFICIENCY SUPER HIGH EFFICIENCY WARNING If the information in these WATER HEATER WATER HEATER instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.
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Page 2: Table Of Contents
CONTENTS Important Safety Information User Interface General Safety Precautions ��������������������������������������������������� 2–5 Start Up ����������������������������������������������������������������������������������� 35 Temperature Adjustment ����������������������������������������������������������35 Product Information Schedule Settings���������������������������������������������������������������������36 Components Diagram �����������������������������������������������������������������6 Time/Date Settings �������������������������������������������������������������������36 Installation WiFi Status �������������������������������������������������������������������������������37 Location ��������������������������������������������������������������������������������������7 Alarms and Service Alerts ��������������������������������������������������������38 Thermal Expansion ��������������������������������������������������������������������������������������8 Maintenance Water Connections ���������������������������������������������������������������������������������������8 Routine Preventive Maintenance ���������������������������������������������... -
Page 3: General Safety Precautions
GENERAL SAFETY PRECAUTIONS To meet residential water use needs, the temperature The following chart details the relationship of water on this water heater is adjustable up to 160°F (71°C). temperature and time to scald injury and may be used as a However, water temperatures over 125°F (52°... - Page 4 GENERAL SAFETY PRECAUTIONS 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.
- Page 5 GENERAL SAFETY PRECAUTIONS WARNING: CAUTIONS: Both LP and natural gas have an odorant added to help • Label all wires prior to disconnecting for service. detection. Some people may not physically be able to smell Wiring errors can cause dangerous and improper or recognize this odorant.
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Page 6: Components Diagram
COMPONENTS DIAGRAM Front View Touch Display Space Heating Temperature Inlet Status: Standby 120° and Pressure warm very hot Relief Valve Settings Status Service Disable Jacket Leak Sensor Lower Space Thermistor Heating Outlet Exhaust Tee Assy Drain Valve Leak Sensor Top View Back Iso View Front Panel Assy... -
Page 7: Installation
Rheem Water Heating FVIR certified gas water heaters can The auxiliary drain pan installation MUST conform with be installed on a residential garage floor without the use local codes. -
Page 8: Thermal Expansion
INSTALLATION If the water heater is to be installed directly on carpeting, thereby relieving the over pressure condition and the water heater shall be installed on a metal or wood eliminating the repeated operation of the relief valve. panel extending beyond the full width and depth of the Other methods of controlling thermal expansion are water heater by at least 3 in. -
Page 9: Gas Supply
INSTALLATION A steady flow of water from the hot water faucet(s) indicates a full water heater. To Gas Supply Manual Gas Shut Off GAS SUPPLY Union The inlet gas pressure to the water heater must not exceed 10.5" wc (2.6 kPa) for Natural gas and 13.0" wc (3.2 kPa) for L.P. -
Page 10: High Altitude
INSTALLATION are activated only on models that require high altitude CONDENSATE NEUTRALIZER adjustments Refer to vent length chart in 'Venting and Air Intake' section for appropriate elevations, vent sizes, and lengths. WARNING: Failure to install a water heater suitable for the altitude at the location it is intended to serve, can result in improper operation of the appliance resulting in property damage and/ or producing carbon monoxide gas, which could result in... -
Page 11: Typical Installation
INSTALLATION A correct polarity 120V 50/60 Hz power supply with suitable disconnect means, must be connected to the black and white leads provided. The maximum current draw by these models is 7 Amps. The water heater, when installed, must be electrically grounded in accordance with local codes or, in the absence of local codes, with the National Electrical Code, ANSI/NFPA 70 in the United States, or CSA C22.1 Electrical Code, in Canada. -
Page 12: Space Heating Connections
INSTALLATION TYPICAL PIPING DIAGRAM FOR COMBINATION POTABLE/SPACE HEATING INSTALLATION... -
Page 13: Venting And Combustion Air Inlet
INSTALLATION VENT AND COMBUSTION AIR INLET NOTICE: NOTE: This unit can be vented either as a direct vent or power vent configuration. This unit can be vented using only the below recommended pipe material. Use only 2, 3, or 4 inch NOTE: Power vent installations are Category IV. - Page 14 INSTALLATION NOTICE: Before starting the vent installation, careful planning of the routing and termination of vent and air inlet pipes can Use of PVC cellular core (ASTM-F891), ABS Schedule 40, DWV reduce installation times. The length of the vent and air inlet cellular core (ASTM –F628), or Radel®...
- Page 15 INSTALLATION NOTICE: FOR PROPER INSTALLATION CAUTIONS: Cement must be fluid; if not, re-coat. 4. Hold the pipe fitting for 30 seconds to prevent the tapered • DO NOT use solvent cement that has become curdled, socket from pushing the pipe out of the fitting. lumpy or thickened.
- Page 16 INSTALLATION Table 1 - Residential Equivalent Vent Lengths 40G-50K AND 50G-50K; POWER VENT 40G-50K AND 50G-50K; POWER DIRECT VENT CONFIGURATION; (RIGID PIPE) CONFIGURATION; (RIGID PIPE) Nat Max Eq. Length(Feet) LP Max Eq. Length (Feet) Nat Max Eq. LP Max Eq. Elevation Vent Size Terminations...
- Page 17 INSTALLATION Direct Vent Installation Check to make sure flue gases DO NOT recirculate into the Stress levels in the pipe and fittings can be significantly air intake terminal when using direct venting. If the water increased by improper installation. If rigid pipe clamps are heater is having service issues, flue recirculation may be a used to hold the pipe in place, or if the pipe cannot move contributing factor.
- Page 18 INSTALLATION TYPICAL HORIZONTAL VENT INSTALLATION in severe damage to the structure or exterior finish of the building. In locations with extended amounts of time with temperatures under 40°F. (4°C.) and/or prevailing wind toward the outlet vent, make sure that the outlet vent terminal is at least 2 feet (0.61 m) away from anything that can be damaged by the condensate.
- Page 19 INSTALLATION Direct Vent Terminal Clearances AREA WHERE TERMINAL IS NOT PERMITTED X AIR SUPPLY INLET V VENT TERMINAL HORIZONTAL VENT TERMINAL LOCATION FOR POWER DIRECT VENT The following information should be used for determining the proper location of the vent terminal for direct vent water heaters.
- Page 20 INSTALLATION Follow local or National gas codes or latest edition of Fuel Gas Code, ANSI Z223.1/NFPA 54 • DO NOT terminate near soffit vents or crawl space or other area where condensate or vapor could create a nuisance hazard or cause property damage. •...
- Page 21 INSTALLATION Power Vent Terminal Clearances X AIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED V VENT TERMINAL HORIZONTAL VENT TERMINAL LOCATION FOR POWER VENT The following information should be used for determining the proper location of the vent terminal for direct vent water heaters.
- Page 22 INSTALLATION Typical Horizontal Direct Vent System Every 3' Max. 1 In. Max. 45° Terminal Support Bracket 2, 3 or 4 inch pipe and fittings Raise horizontal pipe upward 1/4 in. per foot (10 mm per m) min. Wall Water Heater Blower Air Inlet Connection Drain Pan...
- Page 23 INSTALLATION Typical Vertical Direct Vent System Installation 90° Intake Terminal 24" (61 cm) Min (Support required). "D" Support Bracket Roof "D" Min. 12 in. (30 cm) for US and Min. 18 in. (46 cm) for Canada Water above Roof Heater Min.
- Page 24 INSTALLATION Direct Vent Vertical Vent Horizontal Intake Roof Wall Direct Vent Horizontal Vent Vertical Intake Roof Wall...
- Page 25 INSTALLATION Typical Horizontal Power Vent System 2, 3, or 4* Every 3' Max. Inch Pipe And Fittings Support Bracket Slope horizontal pipe downward 1/8 in. per 45° Terminal foot (10 mm per m) min. 1 In. Max. Drain Tube IMPORTANT: In cold weather climates vent must slope back towards water heaters.
- Page 26 INSTALLATION Typical Vertical Power Vent System Installation Min. 12" (30.5 cm) for US Straight Exhaust Terminal and Min 18" (46 cm) for Canada above roof. Min. of 12" (30.5 cm) above anticipated snow level. Support Bracket Max. 24" (61 cm) above roof without additional Recommended support bracket be support.
- Page 27 INSTALLATION Concentric Vent Terminal Installation CAUTION: PROCEDURE Improper installation, adjustment, service, or DO NOT operate this water heater with the rain cap maintenance can cause property damage, personal removed or recirculation of combustion products may injury, or death. Consult a qualified installer, service occur.
- Page 28 INSTALLATION WARNING HORIZONTAL AIR INLET PIPE INSTALLATION 1" Maximum These instructions are intended as an aid to qualified service Combustion Field Supplied Air-Inlet to personnel for proper installation, adjustment, and operation of Strap Water Heater this kit. Read these instructions thoroughly before attempting installation, adjustment, or operation.
- Page 29 INSTALLATION WARNING: STEP 6: Complete the installation of the remainder of the vent and DO NOT operate the water heater with the rain cap combustion air-inlet systems as required in this manual. removed or recirculation of combustion products may occur. The vent air pipes may also take in water, causing VERTICAL damage to the water heater.
- Page 30 INSTALLATION Alternative Vertical Vent Termination Alternative vertical vent termination kits are commercially available. Please refer to the instruction sheet packaged with the kit for complete installation instructions. WARNING: Under no circumstances should the exhaust pipe and the air intake pipe be connected together. Minimum Clearance 18 inches above roof Concentric Vent Termination Adjustable Roof Flashing...
- Page 31 INSTALLATION Alternative Horizontal Vent Installations Alternative flat horizontal vent termination kits are commercially available for 2" and 3" pipes. Refer to the instruction sheet packaged with the kit for complete installation instructions. Support Hanger Exhaust Vent Flat Flat Horizontal Air Intake Exhaust Upward Slope Termination...
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Page 32: Check List
INSTALLATION CHECK LIST A. Water Heater Location E. Venting ❑ Close to vent locations ❑ Water heater vented separately from all other appliances ❑ Located indoors and protected from freezing temperatures ❑ All vent and air intake pipe connections are secure ❑... -
Page 33: Lighting Instructions
OPERATION Before operating this water heater, be sure to read and follow the instructions on the label pictured below and all other labels and warnings on the water heater and printed in this manual. Failure to DO so can result in unsafe operation of the water heater resulting in property damage, bodily injury, or death. -
Page 34: Safety Precautions
OPERATION SAFETY PRECAUTIONS F. If there is any difficulty in understanding or following A. DO turn off manual gas shut-off valve if water heater has the OPERATION or MAINTENANCE instructions, it is been subjected to over heating, fire, flood, physical recommended that a qualified person or serviceman damage or if gas supply fails to shut off. -
Page 35: Start Up
USER INTERFACE NAVIGATING THE HOME SCREEN: Health Indicator Icons Operating Status Status: Standby Wifi Indicator and Settings 120° Rapid Temperature Adjustment Temperature Setting warm very hot Temperature Adjustment Settings Status Disable Service Setting Menu Button Status Button Service Menu Enable/Disable Button Button STARTUP... -
Page 36: Schedule Settings
USER INTERFACE BASIC SETTINGS: The basic settings in your water heater can Schedule - The recirculation pump will run on a 15 min On/15 allow you to change the temperature unit, screen adjustment min Off cycle whenever the heater is set to the "Home" mode lock/unlock, enabling/disabling the alarm beep, and your (see SCHEDULE SETTINGS). -
Page 37: Wifi Status
USER INTERFACE In case there is an active alarm, the "Service" button will blink on the home screen. Pressing the "Service" button will show a Status: Water Heater Disabled new screen containing the active alarms and alarm history. Air Intake Press. Switch Closed Exhaust Press. -
Page 38: Alarms And Service Alerts
USER INTERFACE ALARMS: The current alarms function allows you to see any SYSTEM HEALTH: The system health function allows you to see problems that have been detected by your water heater. Also, the current health of your hot water heater’s combustion health. by selecting on the current alarm you can press “more info”... -
Page 39: Routine Preventive Maintenance
MAINTENANCE Properly maintained, this water heater will provide years of Drain few quarts of water from the water heaters tank every dependable, trouble free service. It is strongly month to clean the tank off these deposits. suggested that a regular routine maintenance program be established and followed by the owner. -
Page 40: Troubleshooting Tips
BEFORE YOU CALL FOR SERVICE… Troubleshooting Tips Status: Standby Save time and money! Review the charts on the following pages first and you may not need to call for service. 120° If one of the health indicators is blinking on the home screen or Status: Standby the service icon is blinking there is an issue with the operation of your water heater. - Page 41 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. Problem Possible Cause What To DO Gas control problem Contact a qualified service technician. Unable to light Unit or electrical supply line not properly Verify that the electrical supply line and unit have...
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Page 42: Error Codes
BEFORE YOU CALL FOR SERVICE… Alarm (‘A’) and Alert Description Current Alarm Screen Display (‘T’) Codes A001 Ignition lockout. Ignition lockout due to a total of 9 consecutive failed ->Clear error code by turning the unit off/on. If A001 ignitions. This will disable the heater. problem persists, contact technical support or service provider. - Page 43 BEFORE YOU CALL FOR SERVICE… Alarm (‘A’) and Alert Description Current Alarm Screen Display (‘T’) Codes A016 High Tank Temperature. Call Tech Service. Energy Cutout (ECO) switch is open. This will disable ->Clear error code by pressing clear button. Refer A016 the heater.
- Page 44 BEFORE YOU CALL FOR SERVICE… Alarm (‘A’) and Alert Description Current Alarm Screen Display (‘T’) Codes A025 No Blower RPM feedback. Call Tech Service Control does not detect blower RPM. This will disable A025 the heater. ->Contact technical support or service provider. A026 Blower expected RPM vs actual RPM mismatch Blower RPM feedback (actual RPM) is ≥300 RPM from A026...
- Page 45 BEFORE YOU CALL FOR SERVICE… Alarm (‘A’) and Alert Description Current Alarm Screen Display (‘T’) Codes A038 Gas Relay 2 stuck closed. Call Tech Svc. Gas relay #2 stuck closed. This could inadvertently A038 allow the gas valve to open. This will disable the ->If problem persists, please contact technical heater.
- Page 46 BEFORE YOU CALL FOR SERVICE… Alarm (‘A’) and Alert Description Current Alarm Screen Display (‘T’) Codes Presence of water detected by the leak sensor in the A104 Water Leak Detected bottom pan. If water is seen locate source and take A104 ->The presence of water has been detected by the appropriate action to correct the issue.
- Page 47 BEFORE YOU CALL FOR SERVICE… Alarm (‘A’) and Alert Description Current Alarm Screen Display (‘T’) Codes T117 Time to Drain and Inspect Tank Periodic maintenance, inspection, and upkeep on the ->Refer to the use and care manual for T117 unit. instructions, or contact technical support or service provider.
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Page 48: Replacement Parts
REPLACEMENT PARTS Instructions For Placing a Parts Order CAUTION All parts orders should include: The model and serial number of the water heater For your safety DO NOT attempt repair of gas piping, gas from the rating plate. control burner, vent connectors or other safety devices. Specify type of gas (natural or LP) as marked on Refer repairs to qualified service personnel. -
Page 49: Wiring And Schematic Diagrams
WIRING AND SCHEMATIC DIAGRAMS... - Page 50 NOTES...
- Page 51 NOTES...
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Page 52: How To Obtain Service Assistance
Manufacturer’s National Service Department at one of the performed. following addresses: e. Details of the problem as you can best describe them. Rheem Manufacturing Co., Water Heater Division ATTN: Technical Service f. List of people, with dates, who have been 800 Interstate Park Drive contacted regarding your problem.