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Theben Timeguard NTT05 Installation & Operating Instructions Manual page 4

24 hour mechanical time switch

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for other wiring, the terminals are marked as follows:
E Earth continuity.
N Neutral supply.
L Live supply.
1 Live Input for volt free output
(if required, if not, leave wire link in place).
2 Normally open switch live output to heater or
other appliance.
3 Normally closed switch live output to heater or
other appliance.
4. Programming the time
switch:
a) Decide what times you would like the time switch
to switch ON and Off.
b) Push the required segments down for the duration
3
of an ON period, and pull them up for the duration
of an Off period. The minimum switching interval
is 15 minutes, and this can be increased in
15 minute steps. Segments which are down send
output voltage to terminal 2, segments which are
up send output voltage to terminal 3.
c) Set the correct time, by rotating the dial clockwise
until the correct time is indicated by the triangular
pointer. Note that as the dial is rotated there will
be an increased resistance to turning as ON/Off
periods are passed.
Points to note:
The segment dial can be turned whilst the time
controller is operating.
In case of power failure, re-adjust the time controller
to the correct time of day by turning the dial in a
clockwise direction until the correct time is indicated
by the pointer.

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