Installation Sheet

12 Rinnai Tankless Water Heater Installaon and Operaon Manual
Contaminant Maximum Level
Total Hardness Up to 200 mg/L
Aluminum * Up to 0.2 mg/L
Chlorides * Up to 250 mg/LL
Copper * Up to 1.0 mg/L
Dissolved Carbon Dioxide (CO2) Up to 15.0 mg/L
Iron * Up to 0.3 mg/L
Manganese * Up to 0.05 mg/L
pH * 6.5 to 8.5
TDS (Total Dissolved Solids) * Up to 500 mg/L
Zinc * Up to mg/L
When selecng an installaon locaon, you must ensure that clearances will be met and that the vent length will be
within required limits. Consider the installaon environment, water quality, and need for freeze protecon.
Requirements for the gas line, water lines, electrical connecon, and condensate disposal can be found in their
respecve installaon secons in this manual.
Water Quality Guidelines
Consideraon of care for your water heater should include evaluaon of water quality. The water must be potable,
free of corrosive chemicals, sand, dirt, or other contaminants. It is up to the installer to ensure the water does not
contain corrosive chemicals or elements that can aect or damage the Rinnai Tankless Water Heater. Water that
contains chemicals exceeding the levels below can damage the Rinnai Tankless Water Heater. Replacement of
components due to water quality damage is not covered by the warranty.
Environment
* Source: Part 143 Naonal Secondary Drinking Water Regulaons
This secon provides informaon on the importance of water quality to the Rinnai Tankless Water Heater. The
informaon is intended to serve as general guidelines only and is not a complete list of water quality guidelines.
3.2 Choose an Installaon Locaon
Air surrounding the water heater, venng, and vent terminaon(s) is used for combuson and must be free of any
compounds that cause corrosion of internal components. These include corrosive compounds that are found in aerosol
sprays, detergents, bleaches, cleaning solvents, oil based paints/varnishes, and refrigerants. The air in beauty shops,
dry cleaning stores, photo processing labs, and storage areas for pool supplies oen contains these compounds.
Therefore, it is recommended that external (outdoor) models be used for these locaons where possible. In
applicaons ulizing room air where there are high levels of parculates, Rinnai oers a room air screen.
The water heater, venng, and vent terminaon(s) should not be installed in any areas where the air may contain
these corrosive compounds.
If you install this water heater in an area that is known to have hard water or that causes scale build-up, the water
must be treated and may require a more frequent ushing schedule.
This water heater includes a service indicator (Service Soon, SS). When selected in the parameter sengs, an SS code
will display on the controller indicang that it is me to ush and service the water heater. Scale build-up is caused by
hard water and can be accelerated if the water heater is set at a high temperature.
Rinnai oers Southeastern Filtraon’s “ScaleCuer Water Condioning System” that oers superior lime scale
prevenon and corrosion control by feeding a blend of control compounds into the cold water supply.