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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

•  230V AC 50 Hz
•  This time switch is of class I construction  

and must be earthed

•  Switch Rating: 

16A Resistive (3.68kW)  

   

Immersion Heaters

•  Switch Type: 

16A relay

•  Voltage free contact if wire link is removed
•  Contact Type: 

Normally Open

•  Manual Override: 

Permanent ON or OFF

•  Boost Times: 

1 or 2 hour

•  Power Status  

LED Indicator: 

Red

•  Output LED  

Indicator: Green

•  7 Day Time Period (7 Day, 5 + 2 Days  

or Individual Day) – 4 ON/OFF switching

All manuals and user guides at all-guides.com

Summary of Contents for NTT08

Page 1: ...I n s t a l l a t i o n O p e r a t i n g I n s t r u c t i o n s 7 Day Digital Time Switch Model NTT08 All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 2: ...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 Specificati...

Page 3: ...ased to 200W by the addition of the Timeguard ZV900 Automatic switch load controller sold separately 4 Installation Ensure the mains supply is switched off and the circuit supply fuses are removed or...

Page 4: ...er 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...

Page 5: ...ed to L Neutral Supply Blue or Black to N Neutral Load to immersion heater Blue or Black to N Switch Live to immersion heater Red or Brown to L1 Earth Green Yellow to Note this device needs to be left...

Page 6: ...g Approximately 720 hour battery reserve 7 Reset The time switch must be reset before programming for the first time or after subsequent discharge for more than 5 days and following a 4 hour period of...

Page 7: ...the Adv Ovr or boost button to set the correct month Press the Time button once to save the month and the screen will show the day Press the Time button once to save the day and the screen will show t...

Page 8: ...After 3 seconds release the Time button and the screen will show the year Press the Time button repeatedly until the minutes are shown Use Adv Ovr or Boost to change the minutes to the correct value P...

Page 9: ...s The display will show Prog 1 with dashes for the hours and minutes Note the example shown is for 5 day 2 day programming 9 Programming ON OFF times The NTT08 has 4 independent On Off periods availab...

Page 10: ...amme 2 ON Programme 2 OFF Programme 3 ON Programme 3 OFF Programme 4 ON and programme 4 OFF adding in times as required Note If further times are not required just leave the dashes in place and scroll...

Page 11: ...ss the Adv button once and set it too ON ADVANCE Note The time switch will now automatically turn OFF at your desired OFF time and will resume the next programme as normal In the same way as for indiv...

Page 12: ...omatically display the mode in which it was last programmed For instance if it was programmed in 5 2 then it will show Mo Tu We Th Fr Either Accept this by pressing the Prg button once and review the...

Page 13: ...ive of the programming A third push of the Adv Ovr button selects a permanent OFF mode OFF OVERRIDE where the output is OFF irrespective of the programming A fourth push of the Adv Ovr button returns...

Page 14: ...be replaced free of charge For the second and third years 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 eligibl...

Page 15: ...14 All manuals and user guides at all guides com...

Page 16: ...rochure please contact Qualified Customer Support Co ordinators will be on line to assist in resolving your query If you experience problems do not immediately return the unit to the store Telephone t...

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