Horstmann CentaurPlus C21 Series 2 User Operating Instructions Manual Download Page 3

Manual Overrides

BOOST FUNCTION

 

- 1 HOUr TeMPOrary OverrIde (HOT WaTer ONLy)

The boost facility will allow the user to boost the hot water channel which is currently 
‘OFF’ for 1 hour. To indicate the boost being activated BOOST will be shown on the display 
for the duration of the boost period. The hot water channel ON indicator will also be 
illuminated.

advaNCe FUNCTION

 

– BrINgS FOrWard THe NexT ON Or OFF OPeraTION  

(CeNTraL HeaTINg ONLy)

The advance facility will allow the user to switch the central heating channel ‘ON’ which 
is currently ‘OFF’ or switch the central heating channel ‘OFF’ which is currently ‘ON’. To 
indicate the advance feature being activated ADVANCE will be shown on the display 
until the next programme switching time. The central heating ON indicator will also be 
illuminated.

Fully Pumped or gravity System

The installer will have set the programmer to suit the installed system. This is normally a 
Fully Pumped system which will allow independent control of the central heating and hot 
water, however on an old Gravity system the central heating and hot water are linked so 
that it is not possible to use the central heating independently. This will allow only one 
common time setting for both hot water and central heating, and will become apparent 
when setting the ON and OFF times as both will be indicated together.

Press BOOST 
button once  
for 1 hour of  
hot water

Press advaNCe 
button once to 
move to the 
next ON/OFF 
time

at any time 
during a BOOST 
period press 
BOOST again to 
return to normal 
programming

To cancel the 
advance press the 
advaNCe button 
again. This will 
return the unit 
to its normal 
programme

AUTO
ALL DAY
24 HRS
OFF

HW CH

AUTO
ALL DAY
24 HRS
OFF

6:35

6:35

PM

PM

RUN

CLOCK

HW PROG

CH PROG

RUN

CLOCK

HW PROG

CH PROG

BOOST

ADVANCE

HW CH

Summary of Contents for CentaurPlus C21 Series 2

Page 1: ...control over hot water and heating with up to 3 ON OFF settings per 24 hours It also has a 1 hour manual boost button for the hot water and an advance button for the central heating There is also a pr...

Page 2: ...ch period symbol 4 SET button 5 Hot Water BOOST or adjust button 6 Central Heating ADVANCE or adjust button 7 Hot Water HW programme select button or ENTER button 8 Central Heating CH programme select...

Page 3: ...d Fully Pumped or Gravity System The installer will have set the programmer to suit the installed system This is normally a Fully Pumped system which will allow independent control of the central heat...

Page 4: ...independent it is possible to have them set differently if necessary All of the settings above will be permanent i e unaffected by programme times until alteration by the user The diagram below illus...

Page 5: ...Use the and buttons to adjust the minutes and press ENTER Use the and buttons to set the date and press ENTER Use the and buttons to set the month and press ENTER Use the and buttons to set the year...

Page 6: ...e the buttons and the programmer will return to preset factory settings General Information BATTERY The programmer is fitted with a non rechargeable long life battery which will maintain the programme...

Page 7: ...der 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 Tim...

Page 8: ...Email sales horstmann co uk Website www horstmann co uk Horstmann Controls Limited Bristol BS4 1UP Leaflet number P84362 Issue 1 8...

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