4
Where to locate the unit
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We recommend that the unit is installed on a suitable wall, at shoulder height and over a sink.
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Adjacent to the means for disconnecting the fixed wiring in all poles in accordance with the wiring
rules (ie: 13A fused double pole isolating switch).
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Available mains cold water supply and drainage facility.
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DO NOT install the unit within reach of a person using a bath or shower.
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This unit must not be installed in an area cleaned by a water jet.
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DO NOT obstruct the ventilation channels on the top of the cover plate.
Installing the water supply and steam vent pipes
The unit must be connected to cold, mains fed, drinking water only.
Pressure range between 0.2 MPa (2.0 bar / 29psi) and 1.0 MPa (10.0 bar / 140 psi).
DO NOT connect to a storage tank
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Isolate the water supply
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Lay in the Ø15mm water supply pipe to the location of the inlet connection.
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Lay in the Ø15mm drainage pipe to the location of the steam vent connection.
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The steam vent connection must be taken directly to the sink below, if there is one,
or via a tundish to a suitable drain.
If a sink is used it must be able to withstand boiling water and have an overflow connection.
Installing the mains supply
If a mains supply is not already available.
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Install a means for disconnecting the fixed wiring in all poles
(eg. 13A fused double pole isolating switch) adjacent to where the unit will be fixed.
Removing the front cover
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Ensure unit is disconnected from mains electricity supply.
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Ensure unit is emptied of water through opening of tap and allow unit to cool.
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Unscrew the front tap.
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Remove the screws from the bottom and top edge of the unit.
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Disconnect the neon light, carefully unclipping it from the front cover.
9
Maintenance / Descaling Process
To Drain the unit
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Turn off the water and electricity power supplies.
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Turn on the tap on the front of the unit to drain the tank.
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Unscrew and remove the tap and remove 4 fixing screws on outer cover.
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Shield the electronic controller from possible water damage.
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Carefully remove the drain plug from the bottom of the tank and drain.
WARNING: Beware of splashing water as it may be near boiling point.
Descaling
If scale comes out with the hot water then the unit may need to be descaled.
As with all water heaters scale will build inside the tank.
How quickly this build up occurs will depend on the hardness of the water and the frequency
of use.
Please follow the procedure below:-
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A suitably qualified person should carry out the descaling.
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Ensure the mains electricity supply is isolated.
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Unscrew and remove tap.
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Remove 4 fixing screws on outer cover.
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Remove draining plug on bottom of water tank.
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After water has drained out replace plug.
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Mix 2 teaspoons (approximately 10ml) food grade citric acid into a cup of water.
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Feed citric acid through tap hole (either by funnel or placing tap half way on the thread, turning
upside down with the tap lever permanently open).
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Tighten tap, leaving outside cover off.
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Turn power on, unit will cycle and fill. Allow unit to boil for 10 minutes then drain.
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Turn power off.
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Drain unit and remove tap.
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Replace outside cover.
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Replace tap, turn power on.
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Wait until unit has filled with water – drain once again from tap, allow unit to refill.
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Unit is ready for use.
Cleaning:
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Before cleaning, switch off the electricity at the isolating switch.
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It is recommended that the unit surfaces are cleaned with a soft cloth.
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Do not use abrasive or solvent cleaning fluids.
