Rinnai 16
HOTFLO (HFE Series) Electric Storage Water Heater OIM
This appliance
MUSTBE
installed by a qualified person in accordance with:
•
Manufacturers installation instructions
•
Current AS/NZS 3000 wiring rules
•
Current AS/NZS 3500�4 Plumbing and drainage
•
All local regulatory requirements
This appliance is
NOT
suitable for use as a spa or swimming pool heater�
LOCATION
The Rinnai Hotflo (HFE Series) storage water heater range have an ingress protection rating of IPX4 making them
suitable for internal or external installation�
The water heater should be placed as close as practicable to the most frequently used hot water outlet point or
points to minimize the delay time for hot water delivery� This will usually be the kitchen tap� For installations where
the distance between the water heater and the outlets is considerable, a flow and return system can be used which
will minimize the waiting time for hot water delivery�
It is recommended that the water heater is installed at ground or floor level. It
MUSTBE
installed in a vertically
upright position� The water heater
MUSTBE
accessible without the use of a ladder or scaffold� Installation into roof
spaces
MUST
comply with local regulatory authority requirements�
Ensure the PTR valve, isolating valves, access covers, thermostats and heating elements have sufficient clearances
and are accessible for service and removal� The information on the rating plates
MUST
also be readable�
The water heater
MUST BE
installed in free standing mode on a level and stable base in a manner that is
acceptable to local authorities� Avoid situations that may result in pooling of water around the base of the water
heater�
Where property damage can occur as a result of water leakage, the water heater
MUSTBE
installed with a safe
tray (overflow tray) and drain. Construction, installation and draining of the safe tray
MUST
comply with local
regulatory requirements and� AS/NZS 3500�4 also requires the use of a safe tray for particular situations�
WATER QUALITY
The water quality of most public supplies is suitable for the water heater� Water quality from bore wells is generally
unsuitable� Refer to the ‘Warranty Conditions’ for water quality parameters and how they affect warranty� If in doubt
about water quality, have it checked against the parameters listed in the warranty conditions�
If sludge or foreign matter is present in the water supply, a suitable strainer or filter should be incorporated in the
water supply to the water heater�
Scaling water is defined as having a total hardness in excess of 200 mg/litre (expressed as calcium carbonate) or
a Saturation Index in excess of +0�4� Areas that have a scaling water supply include South Australia and Western
Australia� In a scaling water supply, calcium carbonate and possibly other compounds are deposited out of the
water onto any hot metallic surfaces and form a scale�
In areas of scaling water an ECV
MUSTBE
fitted on the cold water line between the non‑return valve and the
connection to the water heater to protect the PTR valve and the water heater� Local regulatory authorities may
require that an ECV be fitted. The ECV is to be supplied and fitted by the installer.
MAINS PRESSURE
The Rinnai Hotflo (HFE Series) electric storage water heater range utilise mains pressure by connecting directly to
the mains water supply� If the mains water supply pressure in your area exceeds the rated pressure of the water
heater a PLV
MUSTBE
fitted.
The mains water supply pressure should be greater than 350kPa for true mains pressure operational performance
to be achieved�
INSTALLATION
