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Immersion heater
Ecoline GEO is provided with a single immersion heater located above the heating coil. The
element is designed as an auxiliary heater to supplement the energy from the heat pump if this is
insufficient to heat the domestic water to the required level.
Wiring instructions for the immersion heater is located on the reverse side of the lower lid. Follow
the wiring instructions connecting the live, neutral and earth as indicated. The electrical connection
to the immersion heater must conform to current IEE wiring regulations. The unit must be
permanently connected to the electrical supply through a double-pole linked switch with a
minimum break capacity of 13 amps. All internal wiring is factory mounted. Each immersion
heater has a working thermostat adjustable between 40°C - 70°C. A safety cut-out is also
incorporated within the thermostat and will operate at 85°C ± 3°C. Should this happen, press the
reset button.
Important: Before resetting the safety cut-out or altering the thermostat setting, isolate
electrical supply to the unit prior to removal of the lid. Ensure the lid to the electrical box
is replaced correctly and the retaining screw is fitted.
Heating coil
Heat sources to unvented hot water cylinders must be controlled by a thermal cut-out as well as
a thermostat. The OSO Ecoline GEO with sensor bosses and pockets to house temperature
sensors linked to the heat pump.
OSO Hotwater (UK) Limited can not be responsible if alternative wiring plans are used.
Important: Before resetting the safety cut-out or altering the thermostat setting isolate
electrical supply to the unit before removal of the lid.
ELECTRICAL INSTALLATION
