Rinnai new Zealand Limited
Hotflo Electric Storage Water Heater
Operation and Installation: 11151-C 03-10
7
Introduction
Rinnai is committed to providing quality heating solutions. The Rinnai Hotflo Electric Storage
Water Heater range offers innovation, quality and energy efficiency.
This manual has been developed to:
• Help you understand how your Hotflo Electric Storage Water Heater operates
• Identify what you need to do to maintain your Hotflo Electric Storage Water Heater
• assist in troubleshooting in the unlikely event that a problem should occur
Some facts about your storage water heater
How it works
a vitreous enamel lined steel tank stores water. This water is heated by an electric element
located at the base of the cylinder.
The temperature of the water is controlled by an automatic thermostat that is preset to 65 °C
to disinfect water for Legionella.
Safety devices
For safe operation your electric storage tank is fitted with a:
• Temperature Pressure and Relief (TPR) Valve that ensures the water remains at a safe
pressure and temperature
• automatic thermostat to maintain water temperature
• Temperature override cutout for the heating element
danGER: The operation of the thermal cutout indicates a possibly dangerous situation. do
not reset the thermal cutout until the water heater has been serviced by a qualified person.
It is important that you do not tamper with or remove these devices. In the case of the TPR
valve, do not block or seal either the valve or drain pipe.
Anode
your electric storage cylinder is fitted with a sacrificial anode designed to extend the life of the
tank. It will slowly dissipate protecting the cylinder and should be changed every five years
(more frequently in hard/aggressive water areas).
Space should be left above the cylinder to allow anode replacement.
If the tank is being used in a solar installation
Please refer to the Solar Operation and Installation Manuals as there are different operating
and installation requirements.
