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CONNECTIONS – ELECTRICAL
The power supply to the water heater must not be switched on until the water heater is filled with
water and a satisfactory megger reading is obtained.
Note: AS 3498 requires that a water heater provides the means to inhibit the growth of Legionella bacteria in
potable water. This water heater can satisfy this AS 3498 requirement provided it is operating and the
thermostat setting is 60°C or higher, including when it is used as an in-series booster water heater for a solar
water heater.
ELECTRICAL CONNECTION
All electrical work and permanent wiring must be carried out by a qualified person and in accordance with the
Wiring Rules AS/NZS 3000 and all local codes and regulatory authority requirements.
The water heater, supplied with a 1.8 metre power cord, requires a 240 V general power outlet (GPO) to be
located within 1.2 metres of the installation. The GPO is required to be weatherproof for an outdoor
installation.
Should it be necessary to provide permanent wiring, the water heater must be directly connected to a
240V AC 50 Hz mains power supply with a double pole isolating switch installed adjacent to and accessible
from the water heater. A 20 mm flexible conduit is required for the electrical cable to the water heater. The
conduit is to be connected to the unit with a 20 mm terminator. Ensure there are no excess wire loops inside
the front cover.
The power consumption of the water heater is:
Model
Power
consumption
Comments
621, 631 265
150 Watts
gas control operation
621 275
150 Watts
gas control operation and includes flue damper
631 275
250 Watts
gas control operation and includes fan
The water heater will only operate on a sine wave at 50 Hz. Devices generating a square wave cannot be
used to supply power to the water heater.
The water heater can be wired for use with a remote control thermostat or a remote time switch. The water
heater thermostat should be adjusted to a temperature higher than the setting on a remote thermostat.
Method of Wiring for Remote Control or Time Switch