ABOUT YOUR WATER HEATER
WATER HEATER APPLICATION
This water heater is designed for use in a single family domestic dwelling for the purpose of heating potable
water. Its use in an application other than this may shorten its life.
Your Rheem® Premier Loline solar water heater is designed for the solar collectors to be roof mounted and
the solar storage tank to be installed at ground or floor level. The solar storage tank is suitable for installation
either outdoor or indoor and with either S200 / SPA2000 or T200 / SCA2000 solar collectors. The system is
suitable for installation in areas subject to frost or freeze conditions. Freeze conditions occur below 6°C.
This water heater is designed to be installed with an in-series booster. For information relating to the function
and operation of the in-series booster, refer to the Owners Guide and Installation Instructions supplied with the
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 19, a pressure limiting valve must be
fitted. The supply pressure should be greater than 350 kPa for true mains pressure operation to be achieved.
The Rheem Premier Loline solar water heater has its vitreous enamel lined solar storage tank installed at
ground or floor level, remotely from the solar collectors. This water heater is a closed circuit solar hot water
system with a heat exchanger in the solar storage tank.
The heat exchanger is filled with closed circuit fluid and is connected to the solar collectors forming a closed
circuit. The closed circuit fluid is a solution of a blue, non-toxic food grade propylene glycol concentrate mixed
with water. The closed circuit concentrate is used to lower the freezing temperature of the closed circuit fluid
and provides protection against freezing.
As the sun heats the solar collectors, the increase in temperature activates
the pump. The pump switches on whenever the solar collectors are hotter
than the water in the tank. The pump moves the closed circuit fluid from the
solar storage tank heat exchanger through an insulated copper pipe to the
solar collectors to be heated by the sun’s energy and then back to the heat
exchanger. Heat transfers from the closed circuit fluid in the heat exchanger
to the water stored in the solar storage tank.
This process continues while solar energy is available and until the water in
the solar storage tank reaches a temperature of approximately 75°C. The
pump is then deactivated and the closed circuit fluid in the solar collectors
and solar pipe work drains back into the heat exchanger in the solar storage
The closed circuit provides protection to the solar collectors and solar circuit
in harsh water areas. The drain back principle provides protection to the
system in freezing conditions.
Automatic safety controls are fitted to the water heater to provide safe and efficient operation.
BOOSTER WATER HEATER OPERATION
Water stored in the solar storage tank passes through the in-series booster when a hot tap is opened. The in-
series booster is for heating the water at times of low solar energy gain, such as during cloudy or rainy weather,
or during colder months.
Solar heated water can reach temperatures up to 75°C in the solar storage tank. When the solar heated water
temperature is above the temperature setting of the in-series booster, the booster will not boost the water