Timeguard NTT04 Electronic Compact 7-Day Timer Instruction Manual

1. Introduction

The Timeguard NTT04 is a compact electronic 7-day timer designed for precise control of electrical circuits. It features voltage-free contacts, making it suitable for a wide range of applications. This timer offers up to 4 ON/OFF program periods per day, totaling 28 ON and 28 OFF programs per week, with a minimum switching time of 1 minute.

Its extra-large 'Easy View' display with blue LED backlight ensures clear visibility, complemented by red 'mains on' and green 'output' LED indicators. The unit also includes a self-cancelling override function, a 1 or 2-hour boost option, and automatic summer/winter time adjustment. A 720-hour battery memory backup ensures settings are retained during power outages.

2. Safety Information

• Always disconnect the power supply before installation or maintenance.
• Installation should be carried out by a qualified electrician in accordance with national wiring regulations.
• Do not exceed the maximum load rating of the timer.
• This timer is not suitable for discharge lighting.
• Keep the device away from moisture and extreme temperatures.

3. Product Overview

Familiarize yourself with the timer's display and control buttons:

Figure 1: Timeguard NTT04 Front Panel
The image displays the front of the Timeguard NTT04 timer. It features a central digital display showing the current time (e.g., 13:07) and day (e.g., Tu for Tuesday), along with an 'ON' indicator. Above the display are 'Power' (red LED) and 'On' (green LED) indicators. On the sides are two elongated blue buttons labeled 'Adv/Ovr' (Advance/Override) and 'Boost'. Below the display are three smaller blue buttons labeled 'Prog' (Program), 'Rst' (Reset), and 'Time'. The 'Timeguard' logo is visible at the bottom right.

Key Components:

• Digital Display: Shows current time, day, and program status.
• Power LED (Red): Indicates mains power supply.
• On LED (Green): Indicates output is active.
• Adv/Ovr Button: Advance to the next program or temporarily override the current state.
• Boost Button: Activates a temporary 1 or 2-hour ON period.
• Prog Button: Used to enter and navigate program settings.
• Rst Button: Resets the timer (often a recessed button requiring a pointed object).
• Time Button: Used to set the current time and day.

4. Installation

The NTT04 timer is designed for installation into a standard flush or surface mount box with a minimum depth of 32mm. Ensure all wiring is performed by a qualified electrician and complies with local regulations.

Wiring Instructions:

1. Ensure the mains power supply is switched off at the consumer unit.
2. Connect the live (L) and neutral (N) wires from the mains supply to the corresponding terminals on the timer.
3. Connect the load wires (e.g., to a light fitting or appliance) to the voltage-free contact terminals (typically marked NO, NC, COM). Refer to the wiring diagram provided with the physical product for specific terminal identification.
4. Secure the timer into the mounting box.
5. Restore power and proceed with initial setup.

5. Initial Setup

5.1. Setting Current Time and Day

1. Press the Time button. The hour digits will flash.
2. Use the Adv/Ovr and Boost buttons to adjust the hour.
3. Press Time again to confirm the hour and move to minutes.
4. Adjust minutes using Adv/Ovr and Boost.
5. Press Time again to confirm minutes and move to day.
6. Adjust the day (e.g., Mo, Tu, We) using Adv/Ovr and Boost.
7. Press Time one last time to save the settings and return to normal operation.

5.2. Automatic Summer/Winter Time Adjustment

The NTT04 timer features automatic summer/winter time adjustment. This function typically activates automatically, but refer to the full product manual for details on enabling or disabling this feature if necessary.

6. Operating the Timer

6.1. Programming ON/OFF Periods

The timer allows for up to 4 ON and 4 OFF program periods per day, accumulating to 28 ON and 28 OFF programs weekly. The shortest switching time is 1 minute.

1. Press the Prog button. The display will show '1 ON' and the time will flash.
2. Use Adv/Ovr and Boost to set the desired ON time for program 1.
3. Press Prog to confirm and move to '1 OFF'.
4. Set the desired OFF time for program 1 using Adv/Ovr and Boost.
5. Continue this process for all 4 ON/OFF programs (1 ON, 1 OFF, 2 ON, 2 OFF, etc.).
6. After setting the last program, press Time to exit programming mode and save all settings.
7. To apply programs to specific days or groups of days, press Prog repeatedly while setting the ON/OFF times to cycle through day options (e.g., Mon-Sun, Mon-Fri, Sat-Sun, individual days).

6.2. Using the Boost Function

The Boost button provides a temporary ON period, typically 1 or 2 hours, overriding the current program. Pressing the Boost button once will activate the boost. Pressing it again may extend the boost or cancel it, depending on the model's specific configuration. The display will indicate the remaining boost time.

6.3. Using the Advance/Override Function

The Adv/Ovr button allows you to temporarily switch the output state (from ON to OFF or OFF to ON) until the next programmed event. This is useful for immediate control without altering the programmed schedule. Pressing it once will change the state, and it will revert to the programmed schedule at the next ON or OFF event.

7. Maintenance

• The timer is generally maintenance-free.
• Clean the unit with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• The internal battery provides a 720-hour memory backup. If the display is blank or settings are lost frequently after power outages, the battery may need replacement by a qualified technician.

8. Troubleshooting

If problems persist, consult a qualified electrician or contact Timeguard customer support.

9. Specifications

• Brand: Timeguard
• Model Number: NTT04
• Voltage: 230 Volts
• Switching Capacity: 16 (4) A Resistive Load
• Minimum Switching Time: 1 minute
• Program Periods: 4 ON/OFF per day, 28 ON/OFF per week
• Display: Extra large "Easy View" with blue LED backlight
• Battery Backup: 720 hours
• Mounting: Standard flush or surface mount box, min. 32mm deep
• Contacts: Voltage-free
• Dimensions (L x W x H): 50 x 50 x 50 cm (approximate)
• Weight: 168 g

10. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the documentation included with your purchase or visit the official Timeguard website. Keep your proof of purchase for warranty claims.