Digital Time Switch
Model: NTT06
24 Hour General Purpose
Digital Timer
Model: NTT07
7 Day General Purpose
Digital Timer
Installation & Operating Instructions
1. General Information
These instructions should be read carefully
and retained for further reference
and maintenance.
2. Safety
• Before installation or maintenance,
ensure the mains supply to the time switch is
switched off and the circuit supply fuses are
removed or the circuit breaker turned off.
• It is recommended that a qualified electrician
is consulted or used for the installation of this
time switch and install in accordance with the
current IEE wiring and Building Regulations.
• Check that the total load on the circuit
including when this time switch is fitted
does not exceed the rating of the circuit cable,
fuse or circuit breaker.
3. Technical Specifications
1
• 230V AC 50 Hz
• This time switch is of class I construction
and must be earthed
• Switch Rating: 16A Resistive (3.68kW)
Immersion Heaters
2400W incandescent
and halogen lighting
750W fluorescent
lighting
100W Compact
fluorescent & LED lighting
The LED switching capabilities of this product
can be increased to 200W by the addition of
the Timeguard ZV900 Automatic switch load
controller – sold separately.
• Switch Type: 16A relay
• Voltage free contact if wire link is removed
• Contact Type: Normally Open
and Normally Closed
• Manual Override: Permanent ON or OFF
• Boost Times: 1 or 2 hour
• Power Status
LED Indicator: Red
• Output LED
Indicator: Green
• NTT06: 24 Hour Time Period,
Up to 48 programmes
per day
• NTT07: 7 Day Time Period
(7 Day, 5 + 2 Days
or Individual Day),
4 ON/OFF switching
programmes per day
• Operating Temperature: 0°C to +40°C
2
• CE Approved
Note: Not suitable for use with
Discharge Lighting.
Power LED
Output
LED
Illuminated
screen
Advance
button
Programme
button
Reset
button
Boost
button
Time
button
Terminal
cover
4. Installation
• Ensure the mains supply is switched off
3 4
and the circuit supply fuses are removed
or the circuit breaker turned off.
• Remove the terminal cover by undoing
the fixing screw on the bottom of the
time switch.
• Mark the position of the top wall mounting
screw. Drill out the top mounting hole taking
care to avoid any joists, electrical cables
or water/gas pipes that may be hidden
beneath the surface. Insert the rawl plug
into the hole.
• Fix the top mounting screw and leave
2.5mm proud off of the wall.
• Place the key hole in the top of the product,
over the screw head, and slide down.
• Mark the position of the lower mounting
hole on the wall using the wall plate
as a template.
• Remove the product and drill out the lower
mounting hole again taking care to avoid
any joists, electrical cables or water/gas pipes
that may be hidden beneath the surface.
Insert the rawl plug into the hole.
• The 230V 50Hz supply and load cables can
enter through the rear knock outs or the front
cable entry ports provided. If the rear knock
outs are being used, remove the blanking
plates and pass the supply and load cables
through the holes.
• Place the key hole in the top of the product
again, over the screw head, and slide down.
• Secure the unit to the wall using the lower
mounting screw.
• If the wiring is through the front cable entry
ports, use the cable clamps provided to
secure the supply and load cables.
• Terminate the supply and load cables to
4 5
the terminal block ensuring correct polarity
is observed and that all bare conductors
are sleeved. Please note the connections are
marked beneath the terminal block
(see section 5. Connection Diagram).
• Secure the terminal cover back into place
using the fixing screw.
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