MOUNTING
The Electronic 7 should be removed from the mounting box by opening the front flap and unscrewing
the 2 captive screws securing the unit to the mounting box. The flap, which is hinged along the
bottom edge may be opened by inserting fingernails simultaneously behind the flap on both sides
and gently levering forward.
CONDUIT BOX MOUNTING
Use either holes marked ‘A’ in Fig.1 to secure to a single gang box, or the two holes marked ‘C’ for a
double gang box. Cable entry is through the cut-out between the 2 fixing holes ‘A’
SPECIFICATION
13A 230V AC 50Hz
Suitable for immersion heaters up to 3kW
Live Parts - enclosed
Dirt protection - normal situation
Moisture protection - ordinary
Shock protection - Class 1
Contacts - Micro-disconnection
Battery Reserve - approximately 2 years total power dis-connection
Size - 170mm x 115mm x 60mm (excluding rocker switch)
ENSURE CORRECT SUMMER OR WINTER
TIME SETTING BY USING THE
SUMMER/WINTER BUTTON
ENSURE WINTER APPEARS
ON THE DISPLAY USING THE
SUMMER/WINTER BUTTON
ENSURE SLIDE SWITCH IS IN
THE MANUAL BOOST
SELECTION POSITION.
REPEAT FOR
REMAINING ON/OFF
PERIODS
USE THE HRS AND MINS
BUTTONS TO SET CORRECT TIME
SETTING THE TIME OF DAY
ENSURE THAT THE AM/PM SETTING ARE CORRECT (THIS COULD EFFECT YOUR OFF-PEAK PROGRAMMING)
SETTING THE OFF-PEAK TIMES
PRESS THE RECESSED SET BUTTON, USING A
PENCIL OR BALL POINT PEN (LOCATED NEXT
TO THE SUMMER/WINTER BUTTON)
USE THE HRS AND MINS
BUTTONS TO SET REQUIRED
1 ON TIME
PRESS THE SET
BUTTON AGAIN
USE THE HRS AND MINS
BUTTONS TO SET REQUIRED
1 OFF TIME
ENSURE CLOCK IS
DISPLAYED WHEN
COMPLETE
SHOULD YOU NOT REQUIRE ANY FURTHER OFF-PEAK SETTINGS ENSURE THAT THE REMAINING PERIODS ARE
SET AT THE SAME TIME EG; 2 ON 12:00PM - 2 OFF 12:00PM,
3 ON 12:00PM - 3 OFF 12:00PM (THESE ARE THE FACTORY DEFAULT SETTINGS)
ONCE THE CLOCK DISPLAY HAS BEEN RESTORED PLEASE ENSURE THE CORRECT SUMMER/WINTER SETTING IS
ON THE DISPLAY.
COMPLETING THE INSTALLATION
To assemble the controller to its mounting box first push the connectors numbered 1 - 5 into the
corresponding numbered terminal as shown in Fig.1
Carefully offer the controller to the box and secure with the fixing screws, ensuring the wiring does
not become damaged.
Switch on the mains supply, put the rocker switch in the TIMED position.
QUESTIONSANDANSWERS
The unit display has become frozen
There is no display on the
programmer
How do I know if the is still under warranty
This could be due to local electrical interference
Using the RESET procedure on page 3, may rectify the fault.
The commissioning switch located on the rear of the unit needs to be set in either
the GMT or GMT/BST position. The Electronic 7 must only be removed from it’s back-
box by a qualified electrician.
The Electronic 7 comes with a 2 year guarantee from the date of manufacture. This
date is located on the rear of the unit, indicated by a month over a year. The
Electronic 7 must only be removed from it’s backbox by a qualified electrician.
The Horstmann Electronic 7 is an advanced water
heating control, which can be programmed to take
advantage of cheap night-rate electricity, so that
there is a tank of hot water available for the morning.
PAGE 1PAGE 4
LEAFLET No P30910
ISSUE 8
INSTALLATION AND CONNECTION SHOULD ONLY BE CARRIED OUT BY A SUITABLY QUALIFIED PERSON
AND IN ACCORDANCE WITH THE CURRENT EDITION OF THE IEE WIRING REGULATIONS.
WARNING:ISOLATE MAINS SUPPLY BEFORE COMMENCING INSTALLATION
ENSURE THE UNIT IS PROPERLY EARTHED.
The Electronic 7 is supplied with it’s own surface mounting box, which can also be mounted over a
single or double gang flush wall box. It should NOT be mounted on an unearthed metal surface.
Means of disconnection from the supply having at least 3mm contact separation in both poles must be
incorporated in the fixed wiring.
We recommend a separate fused circuit from the consumer unit (24 Hour supply) protected by a 15
amp HRC fuse or, preferably a 16 amp MCB. In some cases immersion heater failure can damage the
ELECTRONIC 7. Installation of a 100 mA RCD will provide additional protection for the unit. If the
ELECTRONIC 7 is to be connected to a ring main then the spur feeding the controller should be
protected in the same way.
SURFACE MOUNTING
Use the two holes marked ‘B’ in Fig.1 Cable entry is through the most appropriate cut-out
REMOVE THE APPROPRIATE CABLE ENTRY CUT-OUTS BEFORE FIXING THE BOX, WHERE POSSIBLE DRILL THE
BOX TO PROVIDE A CLOSE FITTING ENTRY FOR CABLES AND HEAT-RESISTANT FLEXIBLE CORDS. TAKE CARE TO
REMOVE SHARP EDGES.
Horstmann Controls Limited
Bristol
BS4 1UP
t:0117 9788 773 - f:0117 9788 701
Email: sales@horstmann.co.uk
Website: www.horstmann.co.uk
To Next Page
Need help?
General
