Horstmann CENTAURSTAT 1 User manual

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LEAFLET No P82161
ISSUE 1
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can be programmed to create a comfortable yet efficient
environment in your home.
1 SET indicator
2 SET positions
3 SET button
4 OVERRIDE (MINUS) button
5 OVERRIDE (PLUS) button
6 ENTER button
7 Time or current temperature
display
8 Target Temperature
9 System ON symbol
10 PM Indicator
11 Temperature Lock Symbol
1
9
87
6
5
4
2
3
Horstmann Controls Limited
Bristol
BS4 1UP
Email: [email protected].uk
Website: www.horstmann.co.uk
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This product 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.
Your CentaurStat is battery operated. The batteries
supplied with the unit should last for approximately two
years.
When the batteries are nearing the end of their life a
BATTERY LOW symbol will flash on the display
(see diagram opposite).
automatically return to your CentaurStat.
PPLLEEAASSEENNOOTTEE::
If the battery fitting time has exceeded 5 minutes some time and temperature adjustment may be
necessary, please refer to the relevant sections located on page 2 and 3 of this user guide.
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between the battery terminals.
(see diagram).
Once batteries have been fitted, offer the left
hand side of the unit up to the mounting
plate ensuring that the two guide lugs are
fitted into the corresponding slots in the side
of the mounting plate.
Now swing the right hand side of the
CentaurStat up against the mounting plate
until the release button clicks into place.
After a few seconds the display will
Press the RELEASE BUTTON on the right hand side of the
unit and swing the front cover away from the mounting
plate by gently pulling on the right.
Remove the old batteries (with the batteries removed
your CentaurStat will retain its programme for
approximately five minutes) and replace them with
three new AA size alkaline batteries, ensure they are
fitted correctly as shown on the label positioned
Located under flap
11
10

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Press the SET
button until SET
indicator is next to
the clock position
on the display.
Use PLUS
and MINUS
buttons to
adjust time
Press the SET button
until the SET indicator is
returned to the RUN
position.
Press
ENTER
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NOTE: When setting the time or altering the temperature settings, if a period exceeding 65 seconds is
allowed to elapse between button presses then the CentaurStat will automatically return to the run
position. Any alterations made since the last press of the ENTER button will not be recognised.
Press
ENTER
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The CentaurStat 1 has six temperature settings per 24 hours.
These all have different start times and temperature settings.
The default factory settings are shown opposite. Should you
want to alter these default times and temperatures, proceed as
instructed by the following sections on page 3.
Press the SET
button until the
SET indicator is
next to the PROG
position
Repeat for remaining
5 time and temperature
periods
Press
ENTER
The target temperature
setting for the 1st period will
now flash
Use the PLUS and MINUS buttons
to alter the target temperature
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PAGE 2
Ensure the SET
indicator is in the normal
RUN position.
Use the PLUS and MINUS buttons to
increase or decrease the
temperature settings
The CentaurStat will operate
on this new setting until the
next time period
The temperature lock facility allows you to ‘lock in’ the target
or override temperature of the current heating period.
With the SET indicator in the RUN position press the ENTER
button. The temperature lock symbol will appear on the right
hand side of the display. All controls buttons other then the
ENTER button will be inoperative.
The locked temperature will now override all other temperature settings until the lock is cancelled.
To cancel the temperature lock, and return to normal settings, simply press the ENTER button.
If an override temperature had been set before the lock was activated, the altered setting will remain
until the next switching period is reached.
PAGE 3
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1 6:00am 20oC
2 8:30am 18oC
3 11:30am 20oC
4 1:30pm 18oC
5 5:00pm 21oC
6 10:00pm 15oC
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.
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Press the SET and ENTER buttons together,
release the buttons and the CentaurStat will
return to preset factory default time settings.
The time setting for 1st
period the will now flash
Use the PLUS and MINUS
buttons to alter the start
time
Press the SET
button until the
SET indicator is
returned to the
RUN position
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The CentaurStat has 2 user
displays, by pressing the
PLUS and MINUS buttons
simultaneously, the user
can toggle between either
Display 1 or Display 2. Display 1 - Shows current
time and target temperature
Display 2 - Shows current
and target temperature
Where an override temperature has been set, this altered setting will remain until the next time and
temperature setting is reached.