Timeguard NTTHDA Manuale utente
24 Hour / 7 Day
Compact Digital
Heavy Duty Timeswitches
I n s t a llation & Ope r ating Instruction s
NTTHDS
Surface Version
NTTHDM
Module Version
NTTHDA
Patress Version
1
1. General Information
These instructions should be read carefully and retained for further
reference and maintenance.
Timeguard reserve the right to alter these instructions at any
time. Up to date instructions will always be available for download at
www.timeguard.com
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.
• To clean use a clean dry cloth only. Do not use liquid cleaners.
3. Technical Specifications
Note:
• Mains Supply: 230V AC 50Hz
• The NTTHDS is of class I construction and must be earthed.
The NTTHDA and NTTHDM are of class II construction.
• Switch Type: 20A Relay
• Voltage free contacts
• Contact Type: Normally Open NTTHDA
Changeover NTTHDM, NTTHDS
• Led Status Indicators: Red (Power), Green (Output)
• Operating Temperature: 0°C to +40ºC
2
• Switch Rating: 20A Resistive (4.6kW)
8A Inductive, 200W LED,
3000W halogen lighting,
750W fluorescent lighting,
100W CFL lighting.
1HP motor (750W)
28V DC 20A (Volt Free)
• The LED switching capabilities of this product can be
increased to 200W by the addition of the Timeguard
ZV900 Automatic load controller - sold separately.
• Manual Override: Permanent ON or OFF
• Boost Times: 1 or 2 hour
• Programme Modes: 24 Hr / 7 day programme
times, 5+2 days, individual
days. Up to 8 programmes
per day. Loop mode and
programme suspension mode.
• Power Reserve: Up to 720 hours
• Standby Consumption: <1W
• CE / UKCA Approved
• Dimensions:
NTTHDM: H 60mm x W 60mm x D 47.6mm
NTTHDA: H 92mm x W 92mm x D 56.2mm
NTTHDS: H 120mm x W 74mm x D 53mm
Note not suitable for use with Discharge Lighting.
3
4b. Installation (NTTHDA only)
• Ensure the mains supply is switched off and the circuit supply
fuses are removed or the circuit breaker turned off.
• Remove the two bezel fixing screws, and remove bezel from
the timer module and wall plate.
Please note that the
model NTTHDM is
pictured. However,
the controls apply
to all models in the
range.
Power LED Output LED
Advance
button
Boost
button
Programme
button
Illuminated
screen
Reset
button
Time
button
4a. Installation (NTTHDM only)
4. Installation
• Connect the installation wiring to the module, according to the
legend printed on the rear side of the time switch, or (see
section 5a. Connection Diagram).
• Ensure the mains supply is switched off and the circuit supply
fuses are removed or the circuit breaker turned off.
• Follow section 4a for the NTTHDM installation, section 4b for
the NTTHDA installation and section 4c for the NTTHDS
installation.
4
4c. Installation (NTTHDS only)
• Ensure the mains supply is switched off 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.
• Ease the module forward without disconnecting, so you have
access to the wall plate and loosen the screws on the terminal
block for both supply and load cables.
• Fit the wall mounting screws through the wall plate and into
the wall box threaded holes, and tighten until the wall plate is
firmly fastened.
• Re-position the module back into place ensuring the time
indicator is on the bottom right hand side, and the locating
holes on the timer are set correctly on the pegs on the back
plate.
• Re-fit the bezel over the timer module, and secure to the wall
plate with the two fixing screws previously removed.
• Ensuring that the free terminals on the wall plate are at the
top, terminate the 230V 50Hz supply and load cables to the
terminal block ensuring correct polarity is observed and that
all bare conductors are sleeved. Please note the connections
are marked on the rear side of the wall plate (see section 5b.
Connection Diagram).
5
• 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 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 5c. Connection
Diagram).
• Secure the terminal cover back into place using the fixing screw.
6
5a. Connection Diagram (NTTHDM)
5b. Connection Diagram (NTTHDA)
LLive Supply (Brown or Red)
NNeutral Supply (Blue or Black)
1COM (Mains or Voltage Free Input)
2Normally Open
3Normally Closed
3 2 1 N L
NTTHDA - 230V Mains Voltage Switching
Note: this device needs to be left to
charge for a minimum of 15 minutes
once powered up, before it will operate.
Note: this device needs to be left to charge for a minimum of 15 minutes once
powered up, before it will operate.
230V 50Hz Mains Supply
Live (Brown or Red) to L
Fit a ‘Link’ or ‘Bridge’
between
L & S IN
Neutral (Blue or Black) to
N
Load
Switch Live
(Brown or Red) to
S OUT
Neutral
(Blue or Black) to
N
S S
INOUT
N L
Link or ‘bridge wir e’
Load
230V 50Hz
Mains Supply
7
NTTHDA - Voltage Free Switching
Note: this device needs to be left to
charge for a minimum of 15 minutes
once powered up, before it will operate.
230V 50Hz Mains Supply
Live
(Brown or Red) to
L
Neutral
(Blue or Black) to
N
Load
Voltage free input S IN
Voltage free output
S OUT
S S
INOUT
N L
Load
230V 50Hz
Mains Supply
8
5c. Connection Diagram (NTTHDS)
230V 50Hz Mains Supply
Live (Brown or Red) to L
Neutral (Blue or Black) to N
Earth (Green/Yellow) to
Load
Switch Live (Brown or Red) to either;
Normally OPEN to mains voltage
appliance e.g. Immersion Heater 2
Normally CLOSED to mains voltage
appliance e.g. Fan 3
Leave the ‘Link’ or ‘Bridge’
wire between L & 1
Neutral (Blue or Black) to N
Earth (Green/Yellow) to
E N L 1 2 3
Link or ‘bridge wir e’
230V 50Hz
Mains Supply Load
NTTHDS - Mains Voltage Switching
Note: this device needs
to be left to charge for
a minimum of 15
minutes once powered
up, before it will operate.
9
NTTHDS - Voltage Free Switching
Note: this device needs
to be left to charge for
a minimum of 15
minutes once powered
up, before it will operate.
230V 50Hz Mains Supply
Live (Brown or Red) to L
Neutral (Blue or Black) to N
Earth (Green/Yellow) to
Load
Remove the ‘Link’ or ‘Bridge’
from between L & 1
Voltage free input 1
Normally OPEN to voltage
free output
2
Normally CLOSED to voltage
free ouput
3
230V 50Hz
Mains Supply
E N L 1 2 3
Load
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