Specifications

4
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.
MODEL TYPE
Your Rheem
®
air sourced split heat pump storage tank is suitable for indoor or outdoor installation and the
heat pump module designed for outdoor installation only. The model you have chosen is a 561 series model.
This water heater is recommended for connection to a 24 hour per day power supply.
A Rheem heat pump water heater consumes less energy than an electric water heater. The impact on an
electricity account will depend on the tariff arrangement of the water heater replaced and where you live.
Contact your energy provider for more information on tariff arrangements and cost comparisons.
The air sourced heat pump water heater has a Rheemglas
®
vitreous enamel lined steel cylinder. The heat
pump module‟s evaporator absorbs heat from the surrounding air and transfers this heat into the water in the
storage tank.
When hot water is drawn off and cold water enters the tank,
the thermostat activates a fan, a compressor and a circulator.
The fan draws outside air in through the air inlet louvres at
the side and rear of the heat pump module and the pump
circulates water from the bottom of the storage tank through a
heat exchanger. Heat is absorbed from the air by an
evaporator and transferred into the water through the heat
exchanger. The resulting cold air is then discharged through
the air outlet grille back to atmosphere and the heated water
is circulated back into the storage tank. This process
continues while heating is required until the water in the
storage tank reaches a temperature of 60°C.
Even on cloudy or cold days, heat is drawn from the
surrounding air. The heat pump will operate when the
ambient air temperature is between a minimum of 3°C to 5°C
and maximum of 45°C to 55°C. The booster heating unit will
operate when the ambient air temperature is outside of this
temperature range, if heating is required. The efficiency of the
water heater increases as the surrounding ambient air
temperature increases within the operating range of the heat
pump.
Automatic safety controls are fitted to the water heater to provide safe and efficient operation.
ELECTRIC BOOSTING
Ice may begin to form on the evaporator reducing the heat pump efficiency, when the ambient air
temperature falls below 7°C and the heat pump has been operating for an extended period. At ambient air
temperatures below 3°C to 5°C, the water heater deactivates the heat pump operation and switches to the
booster heating unit. During this period the evaporator will defrost if necessary.
At ambient air temperature above 45°C to 55°C, the water heater deactivates the heat pump operation and
switches to the booster heating unit.
The water inside the tank will be heated to a temperature of 60°C by the electric booster heating unit if
heating is required. The temperature setting of the sensor controlling the booster heating unit is not
adjustable and is set at 60°C.
The boost capacity of the booster heating unit in a 325 litre storage tank is 180 litres.
Note: The boost capacity of a low watts density or other than a 2.4 kW or 3.6 kW heating unit, if used, is
100 litres.