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INSTALLATION
HAZARDOUS VOLTAGE, RISK OF ELECTRICAL SHOCK
Disconnect all sources of supply, prior to the commencement of any electrical work
ELECTRICAL CONNECTIONS
AllelectricalworkincludingpermanentwiringandconnectionstothewaterheaterMUST BE
performed only by a authorised person in accordance with local regulatory requirements and
WARNING
AS/NZS3000wiringrules.
The electrical power supply to the water heater MUST NOT be switched on until it is filled
with water and insulation resistance has been tested as satisfactory (a satisfactory electrical
insulationtestreading).
The water heater must be directly connected to a 3 phase 415 Volt AC star supply with one heating element per
phase for the models with 3 heating elements and a common Neutral� An isolating switch MUSTBE installed at
the switchboard�
A means of disconnection MUSTBE incorporated in the fixed wiring. Ensure the building wiring to the water heater
is capable of withstanding the electrical load (refer to "Table 2 Ratings & Other Specifications" on page 11 for
electrical load details)�
The above method of connection is recommended, however it is possible to convert and connect these water
hearers to a single phase 230/240 Volt AC supply. Contact Rinnai for necessary additional requirements and
details�
Check the available tariffs with the local electricity supplier. The Off-Peak (overnight) tariff is usually the most
economical for the customer�
Use a suitable conduit for any external electrical cable connections to the water heater� Electrical cable entry to the
water heater is via a 25mm hole provided beneath the front cover, fitting of an approved M25 weatherproof cable
gland at the electrical cable entry point is also required.
The power rating of the heating elements is shown on the data label of the heater and are rated for a 230/240 Volt
AC power supply�
THE WATER HEATER IS NOT SUITABLE FOR POWER SUPPLIES UTILISING A
415 VOLT DELTA CONNECTED SUPPLY.
IMPORTANT
Remove the front cover to access terminal blocks and connect all ACTIVE and NEUTRAL wires in accordance with
the wiring diagram on the next page, a copy of which is also located on the inside of the front cover. Ensure that
the Earth wire is securely fixed to the earth post provided on the heater case.
The thermostat is adjustable from 60°C to 80°C� Turning the adjustment knob anticlockwise decreases the
temperature setting and turning it clockwise increases the temperature setting� Rinnai advise that the thermostat
be set at 70°C as this temperature is sufficient for most commercial applications.
Inspect and ensure that all wiring links are secure, ensure the Over-temperature Energy Cut-Off is reset by pressing
the red 'reset' button on the Thermostat and ensure the water heater is filled with water.
Replace the front cover after electrical work is completed and ensure the water heater is filled with water before
turning the power on�
Rinnai
18
SS QRE HW IM
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