Rheem Essential Guidelines for Safe Operation of Your Gas Tankless Water Heater

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DANGER!

NATURAL GAS AND 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. Other conditions, such as odorant fade , which causes the odorant to diminish in intensity, can also hide or camouflage a gas leak.

Water heaters utilizing LP gas are different from natural gas models. A natural gas water heater will not function safely on LP gas and vice versa.

No attempt should ever be made to convert the water heater from natural gas to LP gas. To avoid possible equipment damage, personal injury or f ire, do not connect the water heater to a fuel type not in accordance with the unit data plate; propane for propane units and natural gas for natural gas units. These units are not certified for any other fuel type.

LP appliances should not be installed below grade (for example, in a basement) if such installation is prohibited by federal, state and/or local laws, rules, regulations or customs.

Propane or LP gas must be used with great caution. It is heavier than air and will collect first in lower areas making it hard to detect at nose level.

Before attempting to light the water heater, make sure to look and smell for gas leaks. Use a soapy solution to check all gas fittings and connections. Bubbling at a connection indicates a leak that must be corrected. When smelling to detect a gas leak, be sure to sniff near the floor also.

Gas detectors are recommended in LP and natural gas applications and their installation should be in accordance with the detector manufacturer's recommendations and/or local laws, rules, regulations or customs.

It is recommended that more than one method, such as soapy solution, gas detectors, etc., be used to detect leaks in gas applications.

Notice: If a gas leak is present or suspected:

Do not attempt to find the cause yourself.

Do not try to light any appliance.

Do not touch any electrical switch.

Do not use any phone in your building.

Leave the house immediately and make sure your family and pets leave also.

Leave the doors open for ventilation and contact the gas supplier, a qualified service agency or the fire department.

Stay away from the house (or building) until the service call has been made, the leak is corrected and a qualified agency has determined the area to be safe.

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Contents Tankless Water Heater Installation Instructions Safety InformationCare and Cleaning Troubleshooting TipsInstall and Properly Vent the Water Heater Water Temperature Setting Natural GAS and Liquefied Petroleum Models Read and Follow this Safety Information Carefully Location Installing the water heaterCorrosive Atmospheres Combustion and Ventilation AirWater pressure is not recommended Mounting the Water HeaterWater Supply Connections Relief Valve Govern the installation of relief valvesPressure Testing the Gas Supply System Leak TestingGas Supply High AltitudeVenting Lengths VentingMaximum Vent Length Minimum Vent LengthDraining the Condensate Venting Through Closed SpacesVent Adapter Additional Considerations Horizontal Vent Terminal Location