Horstmann CentaurPlus C27 User manual

1.SET indicator 10.Central heating ON indicator
2.Time of day 11.SET positions
3.Switch Period symbol 12.PROGRAMME positions
4.SET Button 13.BOOST symbol
5.Hot water BOOST or adjust (-) button 14.ADVANCE symbol
6.Central heating ADVANCE or adjust (+) button 15.AM/PM symbol
7.Hot water (HW) select or ENTER Button 16.Day of week indicator
8.Central heating (CH) select or COPY button 17.PROGRAMME indicators
9.Hot water ON indicator
CCEENNTTAAUURRPPLLUUSSCC2277
UUSSEERRIINNSSTTRRUUCCTTIIOONNSS
QQUUEESSTTIIOONNSSAANNDDAANNSSWWEERRSS
The unit display has become frozen
The indicator neon fails to illuminate
on Hot water or Central heating
channel
The indicator neon will illuminate but
the pump and/or boiler fails to
operate
There is no display on the
programmer
How do I know if the programmer is
still under warranty
How is the programmer removed
from the wall
This could be due to local electrical interference
Using the RESET procedure may rectify the fault.
Using the RESET procedure may rectify the fault. If the problem persists the programmer will
need replacing.
This may indicate a problem elsewhere in your system;
E.g. A zone valve, etc. please contact a registered installer for advice.
Try the RESET procedure on page 2, if this fails to rectify the problem please have the mains
supply checked
The CentaurPlus range 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
WWAARRNNIINNGG::The CentaurPlus programmer must only be removed from it’s backplate by either
a qualified electrician or heating engineer; The programmer plugs in to a 6 pin backplate
located on the rear of the unit and is secured using 2 screws located on the bottom surface
of the unit. Undo these screws and pull forward and up in an arc motion
LEAFLET No P60498
ISSUE 4
FRONT VIEW OF PROGRAMMER
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This programmer is NOT user serviceable. Please do not dismantle the unit.
In the unlikely event of a fault developing please refer to the RESETTING THE PROGRAMMER section of
this user guide located on page 2. If this fails to resolve the problem please contact a local heating
engineer or a qualified electrician.
BBAATTTTEERRYY
The programmer is fitted with a non-rechargeable, long life battery, which will maintain the
programmed time settings for a minimum of ten months with the supply disconnected.
THIS SHOULD BE SUFFICIENT TO COVER POWER INTERRUPTIONS DURING THE LIFE OF THE UNIT.
During power interruptions the display will be blank, after 3 days the current time of day will be lost.
These measures are to prolong the battery life. HHoorrssttmmaannnn’’ssCC2277--TTwwooCChhaannnneellPPrrooggrraammmmeerrOffers up to three
programmed operating periods per day, seven days a week,
with Hot water Boost and Heating Advance control on a fully
pumped system.
1
12
9
11
8
10
76
54
2
13 14
15
3
16 17
Horstmann Controls Limited
Bristol
BS4 1UP
Email: [email protected].uk
Website: www.horstmann.co.uk

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Electronic equipment can in some circumstances be affected by electrical interference. If the
programmer’s display becomes frozen or scrambled; or if you wish to revert back to the default time
settings please use the following procedure.
SETTING DAY AND TIME OF DAY
Should you encounter any problems, please refer to the
QQuueessttiioonnaannddAAnnsswweerrsection located on page 4.
RESETTING THE PROGRAMMER
Press SELECT once.
Programme goes from
AUTO to ALL DAY
Press SELECT again.
Programme goes from
ALL DAY to 24 HRS
Press SELECT again.
Programme goes from
24 HRS to OFF
Press SELECT again.
Programme goes from
OFF to AUTO
Channel will operate
from first ON until last
OFF period
Channel will be
continuously ON
Channel will be
continuously OFF
Programmer will return
to normal ON and OFF
times
BOOST FUNCTION - 1hour temporary override
Press BOOST button:
Your Hot Water will be
Boosted for 1 hour
At any time during a BOOST
period press BOOST again to
return to normal
programming
ADVANCE FUNCTION - Brings forward next ON or OFF operation
Press ADVANCE button
to move to the next
Heating ON/OFF time
To cancel the advance press the ADVANCE
button again. This will return the unit to
its normal programme
INFORMATION AND ADVICE
Programming ON/OFF times
If a Heating or Hot water period is not required it can be cancelled by setting the ON and OFF
settings to the same time. Example ON 10:00am OFF 10:00am
FULLY PUMPED OR GRAVITY SYSTEM
The installer will have set the programmer to suit the installed system. If this is a Fully pumped
system this will allow independent control of the Central heating and Hot water, however on a 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.
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Press the SET
button until the SET
indicator is next to the
CLOCK position.
Use
PLUS and
MINUS
buttons to
adjust time
Use PLUS
and MINUS
buttons to
adjust day
Press
ENTER
Press SET button
until the SET
indicator is next to
the Central Heating
or Hot Water
position
Repeat this
process for 2nd
and 3rd settings
Press
ENTER
Press
ENTER
Press
ENTER
SETTING THE ON AND OFF TIMES
The SET indicator must remain in the RUN position for the following instructions.
The following actions work independently on either Hot Water or Central Heating.
SPECIAL FEATURES
Use PLUS
and MINUS
buttons to
adjust day
Use PLUS and
MINUS
buttons to adjust
the 1st ON time.
Use the PLUS
and MINUS
buttons to adjust
the 1st OFF time.
Programme the
remaining days.
If you require this
programme on any other
day of the week use the
PLUS and MINUS buttons to
select day and press COPY
Press the SET
button until the SET
indicator is next to the
RUN position.
Press
ENTER
Press SET button
until the SET
indicator is returned
to RUN position
6:35
M T W T F S Su M T W T F S Su
SET
CH
M T W T F S Su M T W T F S Su M T W T F S Su M T W T F S Su
M T W T F S Su
AUTO
ALL DAY
24 HRS
OFF
AUTO
ALL DAY
24 HRS
OFF
AUTO
ALL DAY
24 HRS
OFF
AUTO
ALL DAY
24 HRS
OFF
HW CH HW CH HW CH HW CH
PM
12:00
PM
RUN
CLOCK
HW PROG
CH PROG
M T W T F S Su
DAY
RUN
CLOCK
HW PROG
CH PROG
M T W T F S Su
6:30
AM
RUN
CLOCK
HW PROG
CH PROG
RUN
CLOCK
HW PROG
CH PROG
1ON
6:35
PM 6:35
PM 6:35
PM 6:35
PM
AUTO
ALL DAY
24 HRS
OFF
6:35
PM
RUN
CLOCK
HW PROG
CH PROG BOOST
M T W T F S Su
AUTO
ALL DAY
24 HRS
OFF
6:35
PM
RUN
CLOCK
HW PROG
CH PROG ADVANCE
HW CH
HW CH
Press the SET and CH buttons together
then release the buttons and the programmer
will return to preset factory settings.
MON-FRI
SAT/SUN
1st ON 1st OFF 2nd ON 2nd OFF 3rd ON 3rd OFF
6:30 AAMM8:30 AAMM12:00 PPMM12:00 PPMM4:30 PPMM10:30 PPMM
7:30 AAMM10:30 AAMM12:00 PPMM12:00 PPMM5:00 PPMM11:00 PPMM
DDEEFFAAUULLTTTTIIMMEESSEETTTTIINNGGSS
The default factory settings
are shown, however if you
wish to change these
proceed as instructed below.