Rheem 310 Owner's Manual And Installation Instructions page 6

ABOUT YOUR WATER HEATER
TO TURN OFF THE WATER HEATER
If you plan to be away from home for only a few nights, we suggest you leave the water heater switched on.
If it is necessary to turn off the water heater:
Switch off the electrical supply at the isolating switch to the water heater.
Close the cold water isolation valve at the inlet to the water heater.
TO TURN ON THE WATER HEATER
Open the cold water isolation valve fully on the cold water line to the water heater.
Switch on the electrical supply at the isolating switch to the water heater.
The heat pump may take up to 30 seconds to commence operating when the power supply is switched on.
The heat pump will only operate when the water in the storage tank requires heating, the heat pump
compressor is cool and power is available at the water heater. If the ambient air temperature is below the
minimum operating temperature of 5°C and the system calls for heating, the booster heating unit will operate
instead.
When the heat pump is operating, the system may switch to the booster heating unit if it detects that the
ambient air temperature is below the minimum operating temperature of 5°C. It may also switch back to heat
pump operation from the booster heating unit if it detects the ambient air temperature has moved back to
within the heat pump‟s operating temperature range.
Note: The heat pump may not turn on after having just completed a heating cycle and more hot water is
drawn from the water heater. The heat pump will wait until the compressor has cooled down and the
conditions for start up are favourable, in order to protect the compressor from damage. This may take up to
20 minutes from the last heating cycle.
TIMER CONTROL
A timer can be installed in the electrical circuit to the water heater. The timer must be weatherproof if it is
installed outdoors.
It may be desirable for the water heater not to operate between certain hours, such as during the peak
period when connected to a Time of Use electricity supply due to a more expensive tariff rate applying. A
timer will affect the operating times of both the heat pump circuit and the booster heating unit.
Note: The 551 310 model heat pump water heater is recommended for connection to a minimum 16 hour per
day power supply.
GOING ON HOLIDAYS
If you plan to be away from home for a few nights, we suggest you leave the water heater switched on. If you
plan to be away for a longer period, conserve energy by switching off the isolating switch to the water heater
"To Turn Off The Water Heater"
(refer to
HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY?
Installation requirements are
and the installation must comply with Standards AS/NZS 3500.4, AS/NZS 3000 and all local codes and
regulatory authority requirements. In New Zealand, the installation must conform with Clause G12 of the New
Zealand Building Code.
DOES THE WATER CHEMISTRY AFFECT THE WATER HEATER?
The water heater is suitable for most public water supplies, however some water chemistries may have
detrimental effects on the water heater and fittings. Refer to
sure, have your water chemistry checked against the conditions
HOW LONG WILL THE WATER HEATER LAST?
There are a number of factors that will affect the length of service the water heater will provide. These
include the water chemistry, the water pressure, temperature (inlet and outlet) and the water usage pattern.
However, your water heater is supported by a comprehensive warranty
on page 6).
shown on page 19. The water heater must be installed by an authorised person
"Water Supplies"
described on pages
(refer to page
6
on page 9. If you are not
9 to 10.
40).