Now, you have the freedom to adjust the tempera-
ture precisely to your preference. While your Optimal°
heater comes set at 120 degrees, you might find 105
degrees sufficient without mixing cold water.
Lowering the set temperature is a way to maximize
energy efficiency while also increasing the flow rate
capacity that can be heated.
If you live in an area with a hard water supply contain-
ing a large amount of dissolved minerals, you may
want to consider a filter. Please visit itsoptimal.com for
more information on filter options.
routine maintenance
Maintenance is essential for preventing damage due to calcification or electrolysis.
Flushing the heat exchanger with 1-2 gallons of white vinegar as necessary to remove
mineral build up will help extend the performance of the elements.
For more information, visit our website at itsoptimal.com and refer to the routine main-
tenance section.
diagnostic mode
Optimal° water heaters are designed to inform. They can provide operational informa-
tion to the user, or helpful diagnostic tools for a support case if one is ever necessary.
To run diagnostics on your product locate the diagnos-
tic button on the LED display and press once.
The first diagnostic, d-01 is your current flow rate. See
the next page for a full list of diagnostic and oper-
ational information. Use the up and down arrows to
move up and down the list.
To the see the detail, press the diagnostic button again
when you have scrolled to the item you want to see.
To exit diagnostic mode, press the power button once.
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105f