User Manual

9
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
The Rheem
®
continuous flow gas water heater model you have chosen
is for outdoor installation only.
The water heater has a maximum preset outlet temperature setting of:
 874 series 75°C
 876 series 50°C
Note: The 876 series water heater is marked “THIS APPLIANCE
DELIVERS WATER NOT EXCEEDING 50°C IN ACCORDANCE WITH
AS 3498” on the front panel.
 An 876 series model must not be installed as an in-series gas
booster to a solar water heater, as water temperature greater than
50°C can be delivered from the water heater contravening its
compliance to AS 3498.
WATER HEATER OPERATION
The water heater operates automatically, heating water as it passes through the water heater. When a hot tap
is opened, the gas burners ignite to provide immediate heating of the water. The heat produced by the burner
is transferred to the water through the heat exchanger. The water is heated to a constant temperature by the
automatic adjustment of the gas supply to the burner to suit the water flow rate (refer to “Temperature Control”
on pages 15 to 44). The gas burners extinguish when the hot tap is closed.
Automatic safety controls are fitted to the water heater to provide safe and efficient operation.
USER TEMPERATURE CONTROL
The water heater may be installed with one or more user adjustable temperature controllers, which allow you
to choose the most suitable water temperature for your hot water needs (refer to “Temperature Control” on
page 15).
For an 874 series – NZ or an 876 series water heater, if temperature controllers have not been installed and
where they may not be an ideal option to retrofit to your water heater installation, the Rheem EZiSET
TM
system
is an alternative temperature control system. The Rheem EZiSET allows you to control the water temperature
and bath water levels directly from your Smartphone. An appropriately licensed tradesperson must firstly install
the Rheem EZiSET control module into your water heater and a PLT adaptor (supplied in the EZiSET kit) must
also be connected to your Wi-Fi modem before you download the free app onto your Smartphone. No
additional wiring is required.
For further information, visit AU – www.rheem.com.au/Continuous-Flow-Accessories, or NZ –
www.rheem.co.nz/gas-water-heaters/.
Note – The Rheem EZiSET system:
 is suitable for a single water heater installation only.
 cannot be used on the 874 series – NZ or an 876 series water heaters if two of these water heaters are
installed with the Rheem EZ Link system, or if multiple water heaters are manifolded together.
 is not suitable for installation on an 874 series – AU water heater.