
Single Channel Timeswitch
The Horstmann CentaurPlus C17 timeswitch will allow up to 3 ON/OFF
settings per day for each day of the week and has a 1 hour manual boost
and advance button to temporarily override current settings.
There is also a programming switch allowing permanent selection of:
OFF/ON/AUTO/ALL DAY.
CentaurPlus C17 Series 2
User Operating Instructions
1

2
The CentaurPlus C17 Timeswitch
The simple instructions contained in this user guide are designed to help with the
programming and operation of the unit.
1 SET indicator - RUN is the normal position
2 Time of day
3 Switch period symbol
4 SET button
5 BOOST or adjust (-) button
6 ADVANCE or adjust (+) button
7 ENTER button
8 SELECT or COPY button
9 System ON indicator
10 SET positions
11 PROGRAMME positions
12 BOOST symbol
13 ADVANCE symbol
14 AM/PM symbol
15 Day of week indicator
16 PROGRAMME indicator
1 14
10
3
11
12
13
9
4 5 6 7 8
2 1615

Manual Overrides
BOOST FUNCTION - 1 HOUR TEMPORARY OVERRIDE
The boost facility will allow the user to boost the system 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 system ON indicator will also be illuminated.
ADVANCE FUNCTION – BRINGS FORWARD THE NEXT ON OR OFF OPERATION
The advance facility will allow the user to advance the system to ‘ON’ when currently ‘OFF’
or switch the system ‘OFF’ when currently ‘ON’. To indicate the advance feature being
activated ADVANCE will be shown on the display until the next programme switching time.
The system ON indicator will also be illuminated.
3
Press BOOST
button:
Your system will
be boosted for
1 hour
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
AUTO
ALL DAY
24 HRS
OFF
6:35
6:35
PM
PM
RUN
CLOCK
PROG
RUN
CLOCK
PROG
BOOST
ADVANCE