AquaMAX EM50 Series - Manual (Page 27)

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power supply will provide the maximum financial savings. Discuss the
power supply requirements with the householder.
Connect the power supply wires directly to the water heaters terminal block
and earth tab connection as shown in the wiring diagram provided on the
rear of the lower electrical access cover. Ensure there are no excess wire
loops inside the front cover.
Note: The active wire from the continuous supply must be connected to the
top heating unit circuit and the active wire from the Off-Peak or time
controlled supply must be connected to the bottom heating unit circuit.
A 20mm flexible conduit is required to protect the wiring to the water
heater. The conduit is to be connected to the water heater with an
approved 20mm flexible conduit terminator.
Note: Remove yellow warning label from conduit entry before connecting
conduit and wiring.
EM50 models with a power supply lead and plug: The water heater
must plug into a 240V AC 10A general purpose outlet (GPO), which is
connected to a 240V AC, 50Hz mains power supply. Models installed
outdoors or in areas subject to water ingress must have a weatherproof
GPO with an IP rating suitable for the area in which it is installed.
Wiring Diagram
Refer to wiring diagram located behind water heater access cover.
Thermostat Adjustment
Warning: The thermostat and its protective over temperature cut out
are mounted inside the front cover(s) of the water heater. The removal of
the front cover(s) will expose 240V wiring. Access covers must only be
removed by an electrician or qualified person.
Warning: Thermostat temperature adjustment must only be performed
by an electrician or qualified person.
The main (bottom) thermostat has been factory preset to 70°C for EM50
and twin element models and 65°C for all other single element models. It is
possible to adjust this thermostat (60 ~ 75°C) but is recommended that the
main thermostat’s maximum setting does not exceed 70°C.
The boost (top) thermostat is set to 60°C and is non adjustable.
To adjust the main thermostat:
Warning: The thermostat must only be adjusted when power to the
water heater is isolated.