Electronic 7
User Operating Instructions
The Electronic 7 Water Heater Controller has been especially developed to
control the immersion heater as economically and conveniently as possible.
During the night, water in the tank will be heated by cheap night-rate
electricity, ensuring a tank of hot water is available for the morning.
Depending on the size of the tank and usage of hot water, this will usually last
a day; however, if required, more hot water can be heated at any time by using
the ‘boost’ button which switches on the immersion heater for one hour.
Alternatively if it is known that extra hot water will be required every day, the
‘boost’ element (in the tank) can be programmed so that it will heat only a
small part of your tank. This is normally the upper element in the tank and can
be programmed to come on once each day at a set time.
Some tariffs offer additional cheaper electricity periods during the day time;
the Electronic 7 has extra off peak switching periods available to
accommodate this.
1
The Electronic 7 - an overview
The simple instructions in this user guide are designed to help you
with programming and operation of the unit.
ELECTRONIC 7
ISOLATE
MAINS
BEFORE
OPENING
OR
SERVICING
IMMERSION
HEATER(S)
TIMED
OFF PEAK PROGRAMME
3
OFF
SWITCHED
OUTPUT
TIMED
1
BOOST PROGRAMME
BOOST
4
CLOCK
RUN
SET
2
AM
MINUS PLUS SELECT
SUMMER
WINTER
TIMED BOOST
LCD Display: The LCD display allows you to view the current time
and set programme times.
Indicators: Illuminated indicators give a visual feedback, indicating
the status of the programmes or boost operation.
Key: 1 - Timed display indicator 2 - LCD Display 3 - Boost Button
4 - Switched Output control
Manual Boost:
To use the manual boost, press the “BOOST” button on the unit
which will then boost your tank for 1 hour and then switch off.
THE BOOST WILL NOT OPERATE OR WILL BE CANCELLED
DURING TIMED HEATING PERIODS
2
Programme Security Lock
If the 4 black squares are showing in the display then this indicates
that the automatic programme of switching times has been locked on
installation and cannot be altered by the user. This will ensure that the
programme stays matched to any preferential tariffs which should
mean that your water is heated as economically as possible. The
manual boost button will still be operative allowing one hour of extra
hot water each time the boost is operated.
TIMED
BOOST PROGRAMME
OFF PEAK PROGRAMME
RUN
CLOCK
AM
SUMMER
WINTER
TIMED BOOST
Switched Output
In the “OFF” position the electrical supply to the immersion heater(s)
is disconnected even though the clock, display and indicator lights
continue to operate. In the “TIMED” position the over-night immersion
heater will be switched on and off at the programmed switch-time
settings, at other times the boost facility is available.
OFF
SWITCHED
OUTPUT
TIMED
3
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