ABOUT YOUR WATER HEATER
6
WARNING
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 side
cover will expose 240 V wiring. It must only be removed by a qualified person.
Care should be taken not to touch the pipe work connecting the solar storage tank and the solar collectors.
Very high temperature hot water can be generated by the solar collectors under certain conditions and flow
through the pipe work from the solar collectors to the solar storage tank.
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 solar storage tank is damaged, it must be replaced by a qualified person in
order to avoid a hazard. Phone Rheem Service or their nearest Accredited Service Agent to arrange for an
inspection.
Warning:
For continued safety of this water heater it must be installed, operated and maintained in
accordance with the Owner‟s Guide and Installation Instructions.
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.
PRECAUTIONS
Where damage to property can occur in the event of the water heater leaking, the water heater must be
installed in a safe tray. Construction, installation and draining of a safe tray must comply with AS/NZS 3500.4
and all local codes and regulatory authority requirements.
The water heater must be maintained in accordance with the Owner‟s Guide and Installation Instructions.
Refer to
“Regular Care”
on page 10.
If this water heater is to be used where an uninterrupted hot water supply is necessary for your application or
business you should ensure that you have back up redundancy within the hot water system design. This
should ensure the continuity of hot water supply in the event that this water heater were to become
inoperable for any reason. We recommend you seek advice from your plumber or specifier about your needs
and building back up redundancy into your hot water supply system.
TEMPERATURE RUN DOWN
Temperature run down is the reduction in water temperature as the hotter water at the top of the storage
cylinder transfers some of its heat to the cooler water in the lower section of the cylinder.
This effect is often perceived as heat loss, but is actually the redistribution of stored heat more evenly over
the entire contents of the storage tank. This heat is not lost to the system. This may make it necessary to use
the booster to raise the water in the top section of the cylinder back to an acceptable temperature.
Over-night temperature run down is most evident in the morning if the booster switch or time clock is left OFF
over-night. It is more prevalent the more hot water is used the night before and also in the cooler months.
Day time temperature run down is quite evident on days of lower solar radiation particularly during the cooler
months if the power to the booster heating element is not available, or the booster switch or time clock is left
OFF.
If higher temperature water is required, particularly in the morning, then use of the booster heating unit is
necessary to raise the temperature of the water in the top section of the cylinder. Refer to
“Booster Control”
on page 7.
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