Rheem Residential Indoor Gas Tankless Water Heater Install and Properly Vent the Water Heater

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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. Should you have problems understanding the instructions in this manual, or have any questions, STOP, and get help from a qualified service technician, or the local gas utility.

DANGER!

INSTALL AND PROPERLY VENT THE WATER HEATER...

Failure to properly install the water heater outdoors as outlined in the Installation Instructions in this manual can result in unsafe operation of the water heater. To avoid the risk of fire, explosion, or asphyxiation from carbon monoxide, never operate this water heater unless it is installed properly and has an adequate air supply for proper operation. Be sure to inspect the flue terminal for proper installation at initial start-up; and at least annually thereafter. Refer to the Care and Cleaning section of this manual for more information regarding flue terminal inspection.

WARNING!

Gasoline, as well as other flammable materials and liquids (adhesives, solvents, paint thinners etc.), and the vapors they produce are extremely dangerous. DO NOT handle, use or store gasoline or other flammable or combustible materials any where near or in the vicinity of a water heater or any other appliance. Be sure to read and follow the labels on the water heater, as well as the warnings printed in this manual. Failure to do so can result in property damage, bodily injury or death.

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Contents Tankless Water Heater Troubleshooting Tips Safety InformationInstallation Instructions Care and CleaningInstall 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 AirMounting the Water Heater Water Supply ConnectionsWater pressure is not recommended Relief Valve Govern the installation of relief valvesHigh Altitude Leak TestingPressure Testing the Gas Supply System Gas SupplyMinimum Vent Length VentingVenting Lengths Maximum Vent LengthVenting Through Closed Spaces Vent AdapterDraining the Condensate Additional Considerations Horizontal Vent Terminal Location