I n st a l l a t i o n & O p e ra t i n g I n st r u c t i o n s
Digital Time Switch Model: NTT08 7 Day Immersion Timer
NTT08 – 7 Day
Immersion Timer
|
Power LED |
Output |
Illuminated |
|
|
LED |
screen |
|
Advance |
|
Boost |
|
button |
|
button |
|
Programme |
|
Time |
|
button |
|
button |
|
Reset |
|
Terminal |
1 |
button |
|
cover |
Sliding cover
1. General:
This time switch is an easy to use digital timer, designed for wall mounting. It can control outputs of up to 16A which makes it suitable for domestic immersion heaters.
NTT08 programming can be 7 day, 5 + 2, or 24 hour.
2. Features:
4 On/OFF switching programmes, which can be made to operate over all 7 days (24 hour operation), 5 weekdays 2 weekend days, or any individual day (7 day operation).
Advance feature advances to next programmed operation.
Boost feature provides 1 or 2 hour boost. Battery back up retains programmes and clock times during loss of mains.
Option of automatic summer time update (ASCO). Shortest switching time of 1 minute.
Programme review.
23. 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.
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.
The terminals are marked as follows: L Live supply.
N Neutral supply.
N Neutral supply to immersion heater. L1 Switched Live to immersion heater. E Earth continuity.
Note: this device needs to be left to charge for a minimum of 15 minutes once powered up,
before it will operate.
3
4. Battery:
The time switch has a factory fitted rechargeable battery to give clock operation and programme memory back up during loss of mains supply.
Before programming for the first time, connect the unit to the mains for at least 15 minutes prior to pressing the Rst button and programming the unit.
If the display is not visible or very faint, charge for 4 hours prior to pressing Rst and programming.
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