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Oanfoss Randall

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102E 24-HOUR ELECTRONIC MINI-PROGRAMMER

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Contents

FOLDING BACK THIS FLYLEAF WILL ASSIST IN FOLLOWING THE INSTRUCTIONS ON PAGES 4 TO 10.

PICTURE OF UNIT AND ITS CONTROLS

PROGRAMME SETTING OPTIONS .

SETTING TIME OF DAY

SETTING THE PROGRAMMES .

TO REVIEW SET PROGRAMMES

TO CANCEL EVENT TIMES .

SELECTING THE PROGRAMMES .

OVERRIDES '+ 1 HOUR'

'ADVANCE'

BATTERY RESERVE .

TO RE-SET THE UNIT .

TYPICAL PROGRAMMES .

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. page 3 (overleaf)

. page 4

· page 5

· page 6 & 7

. page 8

page 8

. page 9

page 10

·. page 10

. page 11

. . page 12

· . page 13

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The Controls

• Providing the unit is connected to a mains power supply then whenever a button is pressed or a slide switch is moved, the display will illuminate for a short period (about 10-15 seconds).

• The slide switch at the bottom left of the unit must be returned to the Run position before the unit can operate or the lower flap be closed.

• The Mains Supply must be switched OFF before attempting to remove the module from the wall plate.

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Slide Switch for Indicators for Programme Programme and Over-ride Seleclion

o Of'F o AUTO • All OAV • CONSTANT

+ 1 HOUR ADVANCE WATER ONLY•IIIIIIQ GIIIID mill) WATEA•HEATeL_j

I • RUN HOURS ON REVIEW

GIDID (111111) GIIIIID e SET

TIUf,; MINUTES 0" DELETE

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\1/ I _J Slide Switch for Selling Selling Time/ Butlons Programmes

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Programme Setting Options

1. Up to 12 event times. i.e. times when the Mini-Programmer will switch ON or OFF. are available within a 24 hour period running from

12.00 a.m. (midnight) to 11.59 p.m. 2. These event times will switch ON and OFF either the Water and

Heating services together or .the Water service only. This is determin· ed by the setting of the SLIDE SWITCH marked 'WATER ONLY'/'WATER & HEAT'.

3. The unit is supplied with 4 of the 12 event times already set. This means that even if no further event times are added. and with the selector switch set to AUTO the unit will switch ON and OFF as follows:

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ON at 6.30 a.m. OFF at 8.30 a.m. ON at 5.00 p.m. OFF at 10.30 p.m.

(N.B. This is only when the unit is in the AUTO programme selection. If set to OFF, ALL DAY. or CONSTANT. it will switch ON and OFF as stated on Page 9). If the pre-set programme is left unaltered. a total of four event times are used. which means you can set up to eight further event times in the 24 hour period. Any or all of the pre-set times can be cancelled if required. However. each pre-set event that is cancelled reduces the number of available events by one. so if all 4 pre-set times are cancelled this will leave a total of 8 event times that can be set. You do not have to use all of these if you do not want to; just set the times which you require. A typical programme. utilising the unit's features. is shown as an example on Page 13.

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Setting the Time of Day

The TIME OF DAY is shown on the digital time display. This is a 12 hour display with AM or PM shown next to the time. When the unit is first connected to the mains power supply, the time shown will be 12.00 a.m. with the colon (between the 12 and 00) blinking on and off. To set the time of day:-1. Lower the hinged flap at the bottom of the unit. This shows a slider

switch and six setting buttons. 2 Move this slider switch to the SET TIME position. The colon on the

time display (between the 12 and 00) will now be steady, signifying the clock has stopped.

3. Set the actual time of the day by pressing the buttons labelled HOURS and MINUTES. Press the HOURS button once and' it will advance by ONE HOUR. Press the button and hold it do,wn to advance in one hour steps through the 24 hour cycle. The time display shows the time being set. Remember to check the AM or PM pisplay shown to ensure the correct hour is set.

I 4. Similarly, press the MINUTES button to set the time in minutes past

the correct hour. When the minutes display passes from 59 to 00, the hours display stays the same, so if you overshoot, you do not have to reset the hours setting.

5. When the correct time has been set. move the slider switch to RUN (the clock does not start running until you do this) and close the flap .

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Setting the Programmes

1. Lower the hinged flap at the bottom of the unit. This shows a slider sw1tch and six sett1ng buttons (see diagram on Page 3).

2. Move this slider switch to the SET PROG position. 3. Set the first time in the day you wish the unit to switch ON by pressing

the buttons labelled HOURS and MINUTES. Press the HOURS button once and it will advance by ONE HOUR. Press the button and hold it down to advance in one hour steps through the 24 hour cycle. The time dispiay shows the time being set; remember to check the AM or PM display shown to ensure the correct hour is set.

4. Similarly. press the MINUTES button to set the time in minutes past the set hour. When the minutes display passes from 59 to 00, the hours display stays the same. so if you overshoot, you do not need to reset the hours setting.

5. When the correct time has been set, as shown on the time display. press the ON button once. When you press the ON button, an indicator bar will appear in the display area under the label marked ON i.e.

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+1 HOUR ON • • 11-1• lfiRM ''- ·C,

Th1s confirms the unit will switch ON at this time. and the indicator bar will stay in this position throughout the time the unit is ON.

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6. To set the time when you require the unit to turn OFF, set the time by using the HOURS and MINUTES buttons. as above, and then press the OFF button once. The unit will then turn OFF at this time, and the indicator bar under the word ON will disappear. This bar will not show throughout the time the unit remains OFF.

7. Enter all the times you require the unit to turn ON and OFF, one after the other. pressing the ON and OFF buttons as appropriate depending upon whether you want the unit to switch ON or OFF at that time. The indicator bar will show when you press ON, and will disappear when you press OFF.

8. If you try to enter more than the total allowable ON and OFF event times. the display will show F:FF This means you cannot enter any more event times unless you first cancel one or more of the times already entered (see page 8).

9. When all the programmes have been set, move the slider switch back to RUN and close the flap.

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To Review Set Programmes

If. at any time. you wish to check or rev1ew the programme set. you may do so by: 1. H1nge down the lower flap and move the slider sw1tch to SET PROG. 2. Press the REVIEW button once. The next event time. ON or OFF after

the current time of day will appear 1n the display If the indicator bar appears in the display under the word 'ON' this shows that the unit will switch ON at that time: 1f the bar is not displayed. it will switch OFF

3. Press the REVIEW button once agam. and the next event time will appear in the display. Continual pressing will review the complete programme set. 1n order. over the 24 hour period.

N.B. The pre-set times (see Page 4) will also appear in their turn (unless they have previously been deleted). along with the times you have set. 4. Remember to return the slider switch to the RUN position and close

the flap.

To Delete, or Cancel, Event Times

If there is an event time. ON or OFF which you no longer require. this may be cancelled by the following: 1. Hinge down the lower flap and move the slider switch to SET PROG. 2. Press the REVIEW button until the event time that you wish to cancel

is on display. 3. Press the DELETE button once. This will cancel the event time shown

and the display will automatically move on to show the next event time programmed.

4. Each press of the DELETE button will cancel the time on display and move along to the next event.

5. If all the event times have been .deleted. further pressing of the DELETE button will cause the display to show E:EE. signifying that there are no events set.

N.B. the pre-set times (see Page 4) will also appear. and one or more of these may be cancelled. if desired. using the method described above. 6 Remember to return the slider swtich to the RUN position and close

the flap 8

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Selecting the Programmes

By using the SLIDE SWITCH marked 'WATER ONLY'/'WATER + HEAT', you can select the services you require. With the switch set to 'WATER ONLY', this gives control of the Hot Water with the Heating switched OFF (normal Summer position). When set to 'WATER + HEAT', both the Hot Water and Heating services will be controlled together (normal Winter setting). By using the SLIDE SWITCH at the top left of the unit, you can now select alternative programmes. The slider switch can be set in one of four positions. OFF position. The unit will remain OFF. irrespective of the times

set. AUTO position. The unit will switch ON and OFF throughout the

day. in line with the programme times set. ALL DAY position. The unit will switch On at the first ON time set at

or after 12.00 a.m. and continue ON until the last OFF time set at or before 11.59 p.m.

CONSTANT position.

Remember

The unit will remain ON, irrespective of the times set.

Whenever the unit is ON. the indicator bar appears on the display under the word ON.

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Override Facilities

There are two overrides which allow temporary changes to be made to the set programme. Both are self-cancelling. wh1ch means that the unit automatically reverts back to the set programme after the overnde period has elapseci. The hinged lower flap remains closed throughout. Neither overrides are operative if the programme selections are set to the OFF or CONSTANT positions + 1 Hour Override A s1ngle press of th& + 1 HOUR button turns the unit ON for an additional hour. Th1s does not alter the set programme times in any way. 1. If the unit is OFF and the + 1 HOUR button pressed once. it will

immediately switch ON for one hour. At the end of the one hour period. it will automatically switch OFF. During this penod. two indicator bars will appear on the display. one will appear under ON to show the unit is ON. An indicator bar will also appear under the word +1 HOUR. signifying that the +1 Hour override has been activated

2. II the unit is already ON. and the +1 HOUR button is pressed once. it will stay ON for a further one hour after it was programmed to switch OFF. At the end of this extra one hour period. the unit will switch OFF. and revert back to the set programme. The + 1 HOUR indicator bar will appear in the display for the whole of the remaining programmed ON time plus the extra hour.

3. If the + 1 HOUR button is pressed a second time. the + 1 Hour override is cancelled and the unit immediately reverts to the set programme.

Advance Override A single press of the ADVANCE button will change the unit from ON to OFF. or vice versa. and the unit will remain in that altered condition until the next programmed change is reached. The override will then be cancelled automatically and the unit will revert to the set programme. During the override period. if the unit is switched ON. the indicator bar will appear for the whole of the ON period. Conversely, the indicator bar will not appear if the ADVANCE button has been pressed to switch the service OFF. If the ADVANCE button is pressed a second time. the Advance override is cancelled and the unit will revert to the set programme.

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Battery Reserve

An internal battery is fitted to the unit. This is automatically charged whilst the unit is connected to the Mains Supply and will last the life of the unit. The battery is fitted to memorise. for up to 8 hours, the Time of Day and Set Programmes. in the event of an interruption of the electricity supply or disconnection of the unit from the mains, for any reason. The unit is supplied with the battery not fully charged, and it will take up to 10 days after connection to the mains for the battery to become fully charged. It will, however have retained sufficient charge after 24 hours to perform a memory function, in the event of a short interruption to the Mains Supply.

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To Re-set the Unit

After a severe electrical storm or senous fluctuations to the electricity supply. there is a slight possibility that the display may either stay at a f1xed time (indicated by the colon not flashing) or show spurious Information e.g. 18:88. Should this occur. the unit can easily be re-set. Alternatively. you may wish to re-mstate the factory pre-set programme wh1ch has been deleted. To do this 1. Switch off the Mains Supply to the unit. 2. Remove the unit from its wallplate by unscrewing the fixing screw in

the base of the unit. Th1s releases the wiring cover and allows the module to be removed by sliding it upwards away from the wallplate.

3 Turn the unit over to reveal the small hole in the back of the unit, about one inch down the unit. i.e.

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4 Insert a thin probe 1.e. a matchstiCk into the hole. This causes all Time of Day and Programming memory to disappear. The unit will revert back to the pre-set programme and a time of 12.00 a.m., once it is re-connected to the Mains Supply.

5. To re-fit the module locate onto the wallplate and when flush with it slide the module down. ensuring the hook at the top of the w311plate engages with the slot in the back of the module. Replace the wiring cover and tighten the fixing screw.

6 Switch on the Mains Supply to the unit and re-set the Time of Day and programmes you require.

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1Ypical Programmes

A typical programme. utilising many of the unit's features. could be as follows:-

Event No. 1 2 3 4 5 Time 12.30 6.30 8.30 12.30 1.45

am am am pm pm (See Notes) :f: * * Prog. OFF ON OFF ON OFF

---Event No. 6 7 8 9 10 Time 5.30 11 00 11.01 Available but

pm pm pm not used in (See Notes) • • this example

Prog. ON OFF ON

:f: For a. switch oil time after 11.59 p.m. this has to be set at the beginning of the day.

* Factory pre-set event times. As two pre-set times have been used a total of 10. are available.

• · By setting two event times 1 minute apart this enables an evening switch off to occur after 11.59 p.m. (providing the off time is entered at the beginni'ng cif the day as shown) but at the same time allowing for a sensible programme· when All Day is selected. (In this example with All Day selected the unit would be on from 6.30 a.m. until 11.00 pm.).

N.B. Pre-set times are: ON at 6.30 a.m. ON at 5.00 p.m.

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OFF at 8.30 a.m. OFF at 10.30 p.m.

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Danfoss Randall

Subject to our conditions of sale, this unit is warranted against defective materials and workmanship. The date of warranty expiry is shown on the rear of the module. Where service is required, it is recommended that you contact the heating engineer who installed the unit to arrange for a replacement unit to be fitted. In cases of difficulty, contact our Consumer Sales Department who will be pleased to advise on the procedure for obtaining a replacement unit.

In accordance w•th our pol•cy of cont•nu.ng development we reserve the nghr to aUer the speolrcat•on of our products w•thout pr•or nol•ce All mformat•on. data and 111usrrat•ons g1ven m th•s bookie! are subtect to vanahon and are Intended lor general gu•dance only

Published by: DANFOSS RANDALL LIMITED Ampthill Road BEDFORD MK42 9ER Tel: (0234) 364621 Telex: 826341 Fax: (0234) 219705 Ref. 1 02E/UB/3 Part No. 2575

August 1991

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