General Operating Instructions; Maintenance - Rheem RTEX 8 Instructions D'installation Et Guide D'utilisation

7- GENERAL OPERATING INSTRUCTIONS

Operating your new tankless water heater is similar to using any traditional water heating system. However, it is
very important that you carefully read all of the setup procedures and operating instructions and tips to ensure
the maximum performance and energy savings from your new water heater. We recommend that all members
of the household read these General Operating Instructions.
How your new water heater works: Your tankless water heater does not store hot water like a conventional
tank-type water heater. It contains heating elements that are capable of heating water on-demand. As soon as
you turn on a hot water faucet, a sophisticated flow sensor recognizes that you have turned on the water. This
sensor measures flow rate while another sensor measures the incoming water temperature. This information is
transmitted continually to the computer logic controls which decide how much power to send to the heating
elements to heat the water to your desired temperature. Once the water faucet is turned off your water heater
will turn off as well.
Water Quality: Quality of water should be taken into consideration when installing and maintaining the water
heater. Water conditions outside the recommended levels outlined below are not permitted and can damage
the water heater. Manufacture reserves the right to deny any warranty claim regarding damage suffered due to
use in water conditions not in accordance with the table below.
If water heater is installed in an area that is known to have hard water that cause scale build-up, the water must
be treated and/or the heater exchanger flushed regularly to prevent damage to heat exchanger and/or heating
elements.
A water treatment device or water softener should be installed to maintain optimal performance of the water
heater in hard water areas. Contact customer service for additional information on these accessory kits.

8- MAINTENANCE

To ensure maximum performance of your water heater and to reduce the risk of a water leak, we recommend
the following maintenance:
Inspect the connections on the inlet and outlet of the water heater at least on an annual basis for any signs of
damage or failure. Any signs of damage, cracks, leakage or weakness should be addressed. Take care not to over
tighten the connections. Serious internal damage to your water heater can occur if you over tighten the water
heater connections at the unit.
IMPORTANT NOTES:
DANGER As with all electrical appliances, under no circumstances should you attempt to install, repair or
disassemble this water heater without first shutting off all power to the unit directly at the fuse or circuit
breaker. SERIOUS BODILY INJURY OR DEATH COULD OCCUR IF YOU IGNORE THIS WARNING.
When any maintenance is performed on the water heater or the home's plumbing system that may introduce air
into the plumbing pipes, it is important to turn the power off to the water heater and purge the air out of the
lines before allowing the unit to power up. FAILURE TO DO SO COULD CAUSE PERMANENT DAMAGE TO THE
HEATING ELEMENT AND VOID YOUR WARRANTY.
If you have a water supply with a high level of mineralization (hard water), you should increase the frequency of
your maintenance.
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