Demand Duo
™
R
-
Series Installation and Operation Manual
39
•
Before operating, smell all around the
appliance area for gas. Be sure to smell next
to the floor because some gas is heavier than
air and will settle on the floor.
•
Keep the area around the appliance clear and
free from combustible materials, gasoline,
and other flammable vapors and liquids.
•
Always check the water temperature before
entering a shower or bath.
•
Do not use this appliance if any part has been
under water. Immediately call a licensed
professional to inspect the appliance and to
replace any part of the control system and
any gas control which has been under water.
•
Should overheating occur or the gas supply
fail to shut off, turn off the manual gas control
valve to the appliance.
•
Do not adjust the DIP switch unless
specifically instructed to do so.
•
Do not use an extension cord or an adapter
plug with this appliance.
•
Any alteration to the appliance or its controls
can be dangerous and will void the warranty.
WARNING
Topics in this section
•
Safety Precautions
•
Control Panel
•
Basic Operation Settings
•
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/
or the heat exchanger flushed regularly. Rin-
nai provides a
“
Scale Control System
”
that
offers superior lime scale prevention and cor-
rosion control by feeding a blend of control
compounds into the water supply. Damage
and repair due to corrosive compounds in the
air is not covered by warranty.
•
Keep the air intake
location free of chemicals
such as chlorine or bleach that produce
fumes. These fumes can damage compo-
nents and reduce the life of your appliance.
Damage and repair due to scale in the heat
exchanger is not covered by warranty.
WARNING
