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Rinnai 14 HOTFLO (HFE Series) Electric Storage Water Heater OIM
This appliance MUSTBE installed by a qualied 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 NOTsuitable for use as a spa or swimming pool heater�
LOCATION
The Rinnai Hoto (HFE Series) storage water heater range have an ingress protection rating of IPX4. The 25 and
50 litre models are suitable for internal installation only� All other larger models are 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 minimise 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 ow 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 oor level. It MUSTBE installed in a vertically
upright position� The water heater MUSTBE accessible without the use of a ladder or scaold. Installation into roof
spaces MUST comply with local regulatory authority requirements�
Ensure the PTR valve, isolating valves, access covers, thermostats and heating elements have sucient 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 (overow 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 aect 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 lter should be incorporated in the
water supply to the water heater�
Scaling water is dened 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 tted 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 tted. The ECV is to be supplied and tted by the installer.
MAINS PRESSURE
The Rinnai Hoto (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 tted.
The mains water supply pressure should be greater than 350kPa for true mains pressure operational performance
to be achieved�
INSTALLATION
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