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Gas Residential
Water Heaters
Model: HG Series, GG Series, GP Series, PG Series, SG Series,
The purpose of this manual is twofold: one, for the installing contractor, to provide requirements 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
trouble shooting of the water heater. This manual includes a parts list.
It is imperative that all persons who are expected to install, operate or adjust this water heater read
the instructions carefully so that they may understand how to do so.
Any questions regarding the operation, maintenance, service or warranty of this water heater should
be directed to the entity from whom it was purchased. If additional information is required, refer to
the section on How to Obtain Service Assistance.
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 or other flammable
vapors or liquids or other combustible materials
in the vicinity of this or any other appliance. To
do so may result in an 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 building.
Immediately call your gas supplier from a
neighbor' s phone. Follow the gas supplier' s
instructions.
Printed in USA
Use & Care Manual
With Installation Instructions for the Contractor
Residential 30, 40 and 50 Gallon
SG Series with SmartWater™ Ignition System
Recognize this symbol as an indication of Important Safety Information!
Proposition 65: This appliance contains fiberglass insulation. Respirable particles of
fiberglass are known to the State of California to cause cancer. Exhaust gas from this
appliance contains chemicals, including carbon monoxide, known to the State of California to
cause birth defects or other reproductive harm.
Manufactured under trademark license by:
Rheem Manufacturing Company
P .O. Box 244020, Montgomery, AL 36124-4020
Part No. AP12171-4 (3/01)
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.
— Improper installation, adjustment, alteration,
service or maintenance can cause injury,
property damage or death. Refer to this
manual. Installation and service must be
performed by a qualified installer, service
agency or the gas supplier.
Pub. No. 49-50008-4 03-01 JR
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Table of Contents
Related Manuals for Rheem HG Series
Summary of Contents for Rheem HG Series
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Page 1: Water Heaters
Water Heaters Residential 30, 40 and 50 Gallon Model: HG Series, GG Series, GP Series, PG Series, SG Series, SG Series with SmartWater™ Ignition System The purpose of this manual is twofold: one, for the installing contractor, to provide requirements and recommendations for the proper installation and adjustment of the water heater;... -
Page 2: Table Of Contents
Safety Information IMPORTANT! Safety Precautions..3–6 Fill out and return the Consumer Product Registration Card that is in the back of this manual. LP Gas Models ... 4 FOR YOUR RECORDS Installation Instructions Write the model and serial numbers here:... - Page 3 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 cost. Pay particular attention to the Safety Instructions. Failure to follow these warnings could result in serious bodily injury or death.
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Page 4: Lp Gas Models
IMPORTANT SAFETY INFORMATION. READ ALL INSTRUCTIONS BEFORE USING. DANGER! LIQUEFIED PETROLEUM MODELS Both 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. -
Page 5: Water Temperature Adjustment
WARNING! WATER TEMPERATURE ADJUSTMENT Safety and energy conservation are factors to be considered when selecting the water temperature setting of water heater’ s thermostat. 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. -
Page 6: Safety Precautions
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. -
Page 7: Location
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, 1515 Wilson Blvd., Arlington, VA 22209 as booklet Z223.1 or National Fire Prevention Association, Batterymarch Park, Quincy, MA 02269 as booklet NFPA No. -
Page 8: Combustion And Ventilation Air
Installing the water heater. 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. Combustion and Ventilation Air NOTE: If the water heater is installed in If air is supplied from outdoors, directly an unconfined space within a building of or through vertical ducts, there must be... -
Page 9: Water Connections
WARNING: The water heater should not be installed in a space where liquids which give off flammable vapors are to be used or stored. Thermal Expansion Determine if a check valve exists in the inlet water line. 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. -
Page 10: Relief Valve
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 water heater. No valve of any type should be installed between the relief valve and the tank. -
Page 11: Gas Supply
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 A sediment trap should be installed at heater should be clean 1/2 black steel the bottom of the gas line. -
Page 12: Installing The Water Heater
Installing the water heater. The water heater must be installed with the factory supplied draft hood in place. Venting DANGER: Failure to install the draft hood and Vent connectors must be attached to Horizontal vent connectors must be properly vent the water the draft hood outlet to connect the pitched upward to the chimney at least heater to the outdoors as... -
Page 13: Potable Space Heating
Supplemental instructions for gas water heaters installed in potable/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 and Space Heating Application Hot water supply to Tee fitting must be installed as shown. -
Page 14: Operating Instructions
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, bodily injury, or death. - Page 15 Lighting the water heater. (With SmartWater™ Ignition System) 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, bodily injury, or death.
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Page 16: Water Temperature
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. -
Page 17: Adjustments
Operating the water heater. If adjustment is necessary… Maximum water temperatures occur just The thermostat is also equipped with a after the burner has shut off. To single use gas shut off device that will determine the hot water temperature shut off the gas supply to the burner if turn on a hot water faucet and place a the water heater exceeds normal... -
Page 18: Care And Cleaning
Care and cleaning of the water heater. Draining the Water Heater In order to drain the water heater, turn CAUTION: Shut off gas to the water off the cold water supply. Open a hot heater at the thermostat gas cock or water faucet or lift the handle on the manual shut-off valve before draining relief valve to admit air to the tank. -
Page 19: Burner Inspection
Venting System Inspection The water heater’ s internal flue must be Make certain the vent connector from inspected annually to be certain it is the draft hood to the chimney is clean by removing the draft hood and properly positioned and securely flue baffle. -
Page 20: Troubleshooting Tips
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 Causes What To Do Condensation This usually happens when This is normal. After the water in the tank warms a new water heater is up the condensation will disappear. - Page 21 Problem Possible Causes What To Do Rumbling noise Scale and sediment Clean tank. in tank. Relief valve Pressure build up This is an unacceptable condition and must be producing popping caused by thermal corrected. Contact the water supplier or plumbing noise or draining expansion to a contractor on how to correct this.
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Page 22: Parts List
Replacement Parts. For 30, 40 and 50 gallon models using natural or LP gas. Instructions For Placing a Parts Order To place orders using a Visa/MasterCard Part description (as noted below) call 800-431-1549. and number of parts desired. CAUTION: For your safety DO All parts orders should include: NOT attempt repair of gas piping, The model and serial number of the... -
Page 23: Product Registration
Cut here Please place in envelope and mail to: Rheem Manufacturing Company Warranty Registration Department P .O. Box 34070 Louisville, KY 40232-4070... - Page 24 Consumer Product Ownership Registration Follow these three steps to protect your new appliance investment: 1 2 3 Complete and mail After mailing the Read your Owner's this Consumer registration below, Manual carefully. Product Ownership store this document It will help you Registration today.