User Operating Instructions
Contents
1. Horstmann 425 Coronet Electro mechanical Timeswitch The Horstmann 425 Coronet timeswitch is a single circuit central heating timeswitch able to switch ON and OFF twice every 24 hours An advance switch is provided to make temporary overrides to the ON or OFF periods and a selector switch gives a further choice of programmes The 425 Coronet Timeswitch The simple instructions contained in this user guide are designed to help with the programming and operation of these units DIAL programme 24 hrs all day wice PROGRAMME TAPPETS of SELECTOR TIME POINTER ADVANCE CONTROL SETTING THE TIME OF DAY The dial rotates clockwise and makes one complete revolution every 24 hours To set the correct time turn the dial clockwise by hand using the levers on the clock face until the correct time of day is against the line marked TIME See diagram opposite SETTING THE ON OFF TIMES YY The four setting tappets coloured red and blue are moved around the circumference of the dial to set your required ON and OFF times These tappets work in pairs to switch the system ON and OFF No 1 red 1st ON and No 2 blue 1st OFF No 3 red 2nd ON and No 4 blue 2nd OFF The tappets may be moved in either direction See diagram Please ensure that you press and hold down any tappet that is to be moved release tappet only once correct time position has been reached Tappets cannot be moved across the Time line2. EXAMPLE If you turn the system ON again after the preset night shut down time when you turn it OFF before retiring ny make sure to operate the advance switch SWITCH again until the number 4 is displayed in STATE the switch state indicator so that the red INDICATOR tappet number 1 will switch the system ON in the morning DO NOT OPERATE THE ADVANCE SWITCH WHEN A TAPPET IS AGAINST THE TIME LINE SWITCH STATE INDICATOR Located above the ADVANCE switch the switch state indicator shows you the number of the tappet which operated last Eg If the system was switched ON by tappet 1 at 7 00am and it is now 9 00am providing that no further tappets operations have past a number 1 should show in the aperture If the switch state indicator does not agree with the programme set on the dial rotate the dial one whole turn and reset to the correct time of day This will ensure that the switch state corresponds to the last tappet operation PROGRAMME OVERRIDE FACILITIES The following programme options are available 24 Hrs The system will be permanently ON All Day The system will switch ON from tappet 1 red and OFF at tappet 4 blue Tappets 2 and 3 are ignored Twice The system switches ON at tappet 1 red OFF at tappet 2 blue ON at tappet 3 red and OFF at tappet 4 blue Off The timer continues to operate but the system will be permanently OFF What is a programmer an explantion for househ
3. The position of the dial may have to be altered to set the initial ON OFF time NN Fa et ya g es AN lk U q LOW Please ensure the clock is set to the correct current time after altering the ON OFF settings LIGHTLY PRESS LIGHTLY PRESS DOWN ON DOWN ON No 1 TAPPET No 2 TAPPET MOVE TAPPET MOVE TAPPET UNTIL REACHING UNTIL REACHING THE DESIRED THE DESIRED ON TIME OFF TIME REPEAT PREVIOUS INSTRUCTIONS FOR 2nd ON OFF SETTINGS USING TAPPETS 3 AND 4 MOVE THE PROGRAMME SELECTION SWITCH TO THE REQUIRED POSITION Manual Overrides ADVANCE CONTROL The advance control allows you to start an ON or OFF period early without altering the tappet time or programme selection settings Moving the advance control to the extreme right brings forward the operation of the next tappet The switch state indicator then changes to the appropriate number When the next tappet passes the time line normal operation returns When the programme selector is in the All Day position tappets 2 and 3 do not operate If you require switching the system OFF for the day after the morning switch ON you will need to step forward with the advance switch until the number 4 is shown in the switch state indicator If you wish to switch ON and OFF by hand or vice versa before the next automatic switching operation the advance control must be operated until the switch state indicator is returned to the correct automatic sequence
4. Park Roman Farm Road Bristol BS4 1UP E mail sales horstmann co uk Web site www horstmann co uk C Leaflet number P83664 Issue 1
5. olders Programmers allow you to set On and Off time periods Some models switch the central heating and domestic hot water on and off at the same time while others allow the domestic hot water and heating to come on and go off at different times Set the On and Off time periods to suit your own lifestyle On some programmers you must also set whether you want the heating and hot water to run continuously run under the chosen On and Off heating periods or be permanently off The time on the programmer must be correct Some types have to be adjusted in Spring and Autumn at the changes between Greenwich Mean Time and British Summer Time You may be able to temporarily adjust the heating programme for example Override Advance or Boost These are explained in the manufacturer s instructions The heating will not work if the room thermostat has switched the heating off And if you have a hot water cylinder the water heating will not work if the cylinder thermostat detects that the hot water has reached the correct temperature The above explanation also applies to your timeswitch which operates as a single circuit programmer Service and Repair This programmer is NOT user serviceable Please do not dismantle the unit In the event of a fault developing please contact a local heating engineer or a qualified electrician HORSTMANN Horstmann Controls Limited South Bristol Business
Download Pdf Manuals
Related Search