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CONNECTIONS – ELECTRICAL
42
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 local
authority requirements.
The water heater requires a 240 V AC, 50 Hz mains power supply for
operation. The solar storage tank with an electric booster heating unit must be
directly connected to a 240 V AC 50 Hz mains power supply with an isolating
switch installed at the switchboard. This water heater is a single phase
appliance. It is not suitable for separate phase supply to the booster heating
unit and solar controls.
A flexible 20 mm conduit is required for the electrical cable to the solar storage
tank. The conduit is to be connected to the unit with a 20 mm terminator.
Connect the power supply wires directly to the terminal block and earth tab
connection, ensuring there are no excess wire loops inside the front cover.
The power consumption of the water heater is:
Component
Power
consumption
Comments
Solar controller 3 Watts Constant load
Solar pump 165 Watts Maximum load at solar heating cycle start up
(for approximately two (2) minutes)
50 Watts Average load during the solar heating cycle
Heating unit 2400 or 3600 or
4800 Watts
Load when heating unit is operating
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 power supply to the booster heating unit can be either a
continuous / time
of use
or an Extended Off-Peak (overnight and day) power supply. An
Extended Off-Peak (overnight and day) power supply will provide more
financial savings. Discuss the power supply requirements to the booster
heating unit with the householder. The power supply to the solar controls must
be a continuous power supply.