A licensed professional must install the water heater according to the exact instructions on pages 4 20.
Outdoor tankless water heater installation.
Second turn off the water supply and drain the water from the water heater.
Choose a location for the new water heater that will allow you to vent it to the outside easily.
If you re upgrading your current system and it is a tank based water heater then an outdoor installation point may be easier to complete.
Place a cover over the vent termination for intake and exhaust to keep debris out.
Homeowners without a good drainage point should also consider an outdoor tankless model before an indoor model in most instances.
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Build a platform with 2 x 4 inch pieces of lumber that will allow you to mount the new tankless water heater about four inches from the wall.
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Outdoor tankless water heater installation and operation manual for outdoor applications only v53de.
In general purchasing and installing a tankless water heater costs about 2 to 2 5 times as much as a standard water heater because of the higher production costs of the unit venting and resizing the gas line and gas meter required to support the unit s demand.
The consumer must read the entire manual to properly operate the water heater and to have regular maintenance performed.
To begin winterizing your tankless water heater first turn the unit off and unplug its power source.