24 Hour
Mechanical Time
Switch
Model: NTT05
General Purpose Timer
Installation & Operating Instructions
NTT05 – General
Purpose Timer
Power LED
Terminal
cover
ON
segment
1
Time control segments:
1 segment = 15 minutes,
push segment down
for ON, pull up for OFF.
1. General:
This time switch is a compact and easy to use
segment timer, for wall mounting. It can control
outputs of up to 16A which makes it suitable for
domestic immersion heaters.
The NTT05 comes with a link in place which
can be removed to provide volt free contacts if
required, making it suitable for a wider range of
switching applications. If volt free is not required,
the link must be left in place.
Programme
ring
Time
indicator
Control switch:
1 = permanently ON,
Timer symbol = timed
control,
0 = permanently OFF.
2. Features:
Permanent ON/OFF facility. This enables the heater
under control to be turned OFF when alternative
methods of heating are available, or during a
holiday period. It also enables the heater to be
permanently turned ON.
Shortest switching time of 15 minutes increasing
in 15 minute steps.
Up to 48 programmes per day.
3. Installation:
We recommend that this unit be fitted by a
qualified electrician. Install in accordance
to wiring and current building regulations.
Please read the instructions carefully. If in
any doubt contact the Timeguard Helpline.
Important: Switch off mains electricity
before commencing work.
2
Remove the terminal cover. Fix the unit to the wall
with the mounting screws provided. Fix the top
screw first and leave 2.5mm proud, place the key
hole in the top of the product over the screw head
and slide down. Then mark and drill the lower
fixing. Secure unit to the wall.
The wiring can enter through the rear knock outs
or the cable entry ports provided. If the wiring is
not through the knock outs, use the cable clamps
provided to secure the cables.
Connect the installation wiring to the terminals
provided, according to the legend on the terminal.
Note: the NTT05 is supplied with a wire link
in place. This should not be removed unless
voltage free contacts are required. If the
link is removed then the output light will
no longer function.
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
of an ON period, and pull them up for the duration
3
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.
5. Permanent Override:
The main slider on the timer can be set to permanent
ON by sliding it to the left, aligning the arrow head
to the 1 symbol.
In the middle position, with the arrow head pointing
at the timer symbol, the timer is in automatic mode.
If the slider is moved to the right, and the arrow head
points at the 0 symbol, the timer is permanently OFF.
6. Specifications:
Operating temperature: 0°C to 40°C
Operating voltage: 230V 50Hz
Switch rating: 16A resistive,
8A inductive,
1 HP, 750W incandescent,
750W halogen,
4
750W fluorescent,
100W compact fluorescent.
Switch type: 22A micro switch
Voltage free contact: Yes, if wire link is
removed
Contact type: Normally open and
normally closed
Power ON light: Yes
Output Light: No
Time period: 24 hours
Note:
Product not suitable for discharge lighting.
3 Year Guarantee
In the unlikely event of this product
becoming faulty due to defective material
or manufacture within 3 years of the date of purchase,
please return it to your supplier in the first year with
proof of purchase and it will be replaced free of
charge. For years 2 and 3 or any difficulty in the first
year telephone the helpline on 020 8450 0515.
Note: a proof of purchase is required in all cases. For all eligible
replacements (where agreed by Timeguard) the customer is responsible
for all shipping/postage charges outside the UK. All shipping costs are
to be paid in advance before a replacement is sent.
For assistance with the product please contact:
HELPLINE
020 8450 0515
or email helpline@timeguard.com
For a product brochure please contact:
Timeguard Limited.
Victory Park, 400 Edgware Road,
London NW2 6ND
Sales Offi ce: 020 8452 1112
or email csc@timeguard.com
67.058.481 (issue 2).
Zerofour – April 2013
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