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Manual Horstmann Electronic 7 Thermostat

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Manual

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: [email protected]k

Website: www.horstmann.co.uk

Download manual in English (PDF, 0.1 MB)

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Join the conversation about this product

Here you can share what you think about the Horstmann Electronic 7 Thermostat. If you have a question, first carefully read the manual. Requesting a manual can be done by using our contact form.

Ness L 10-07-2020
Hi, my Horstman boiler was working up until a power cut. After power cut, time was reset and boiler runs during off peak hours eg 2-7am. I’ve checked and confirm this. What I don’t understand is why the water is not hot at all if the boiler is functioning, what can be the reason for not hot water? In the morning the boiler feels warm to touch. Any advice would be greatly appreciated.

reply | This was helpful (0)

More about this manual

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Specifications

Brand	Horstmann
Model	Electronic 7
Category	Thermostats
File type	PDF
File size	0.1 MB

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Frequently Asked Questions about Horstmann Electronic 7 Thermostat

Our support team searches for useful product information and answers to frequently asked questions. If you find an inaccuracy in our frequently asked questions, please let us know by using our contact form.

What is the dead zone of a thermostat? Verified

Many modern thermostats have a dead zone. If the temperature deviates less than 4°C from the set temperature, the system will not heat or cool. This so called dead zone of the thermostat prevents the system from turning on and off too often, saving energy.

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What is the best place to mount a thermostat? Verified

The best place for a thermostat is approximately 1,5 meter above the ground. Never place the thermostat nead a radiator or other heat emitting equipment or in direct sunlight. Choose a room that is used often. In most cases this is the living room.

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