Rheem 491 Owner's Manual And Installation Instructions page 10

ABOUT YOUR WATER HEATER
SAFETY
This water heater is supplied with a thermostat, an over-temperature cut-out and
a combination temperature pressure relief valve. These devices must not be
tampered with or removed. The water heater must not be operated unless each
of these devices is fitted and is in working order.
The operation of the over-temperature cut-out on the thermostat indicates a
possibly dangerous situation. If the over-temperature cut-out operates, it must
not be reset and the water heater must be serviced by a qualified person.
If the electrical conduit to the water heater is damaged, it must be replaced by a
qualified person in order to avoid a hazard. Phone Rheem Service or their
nearest Rheem Service Centre to arrange for an inspection.
The Rheem warranty may not cover faults if relief valves or other safety
devices are tampered with or if the installation is not in accordance with
these instructions.
WARNINGS

This water heater is only intended to be operated by persons who have the
experience or the knowledge and the capabilities to do so.

This water heater is not intended to be operated by persons with reduced
physical, sensory or mental capabilities i.e. the infirm, or by children. Children
should be supervised to ensure they do not interfere with the water heater.

This water heater uses 240 V AC power for the electrically operated
components. The removal of the front cover(s) will expose 240 V wiring. It
must only be removed by a qualified person.

For continued safety of this water heater it must be installed, operated and
maintained in accordance with the Owner's Guide and Installation
Instructions.
MAINS PRESSURE
The water heater is designed to operate at mains pressure by connecting directly
to the mains water supply. If the mains supply pressure in your area exceeds
that shown on page 25, a pressure limiting valve must be fitted. The supply
pressure should be greater than 350 kPa for true mains pressure operation to be
achieved.
10