Timeguard TRTD7N Manual

Installation & Operating Instructions

Digital Economy Seven

Programmer

Model: TRTD7N – White

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 l Construction and must be earthed

• Switch Rating: 13A Resistive (3kW) Immersion Heaters

• Switch Type: Micro-disconnection ON control.

Disconnection to immersion heater(s)

via double pole rocker switch

• 24 hour Programme: 10 selectable pre-set tariff

programmes (0 – 9)

• Boost Times: 30, 60, 120 minutes

• Economy Output Light: Blue LED

• Battery Backup: 2 year reserve, factory ﬁtted

rechargeable non-replaceable

• IP30 Rated suitable for restricted internal applications

• CE Compliant

• Dimensions (H x W x D): 111.5 x 170 x 60mm

4. Installation

Suitable for use with single, dual, or twin element immersion heaters.

4.1 Ensure the mains supply is switched off and the circuit supply fuses

are removed or the circuit breaker turned off.

4.2 Remove the 2 ﬁxing screws holding the front panel to the back box.

4.3 Decide which mounting holes you would like to use and select a suitable

cable entry point by drilling into the back box ensuring not damage or

infringe on any of the internal components.

4.4 Mark the position of the mounting holes on the wall using the back

box as a template. Drill out the mounting holes taking care to avoid any

joists, electrical cables or water/gas pipes that may be hidden beneath

the surface. Insert the rawl plugs into the holes.

4.5 Pass the 230V 50Hz mains supply and load cables through the cable

entry point(s) on the back box.

4.6 Fix the back box to the wall using the correct mounting screws for the

rawl plugs installed.

4.7 Use the cable clamp in the back box to secure the cables.

4.8 Terminate the cables into the terminal block ensuring correct polarity

is observed and that all bare conductors are sleeved (See section 5.

Connection Diagram).

4.9 Select and set your preferred program and time setting using the

adjusters located on the reverse of the front panel (See section 6.

Commissioning).

12 hour display (back lit during programming) Economy light Programming buttons

Boost button (illuminated in use)

OFF/Timed switch

12345

230V~50Hz

MAINS SUPPL

LOAD

Heater

Neutral

Off Peak

Load

Earth

Link or

Bridge

Wire

5. Connection Diagram

Connect the cables to the terminal block which are marked as follows;

• 230V 50Hz mains – Single element immersion heaters only.

230V 50Hz Mains Supply

Live Supply (Brown or Red) to terminal 1

Neutral Supply (Blue or Black) to terminal 2

Earth (Green/Yellow) to

Load

Switch Live, Off peak load (Brown or Red) to terminal 5

Heater Neutral (Blue or Black) to terminal 3

Earth (Green/Yellow) to

Note: a link or bridge will need to be fitted between terminal 4

and terminal 5 if you wish to use the Boost button

(single element immersion heaters only).

12345

230V~50Hz

MAINS SUPPL

LOAD

Heater Neutral

Boost Load

Off Peak Load

Earth

• 230V 50Hz mains – Twin or Dual element immersion heaters.

230V 50Hz Mains Supply

Live Supply (Brown or Red) to terminal 1

Neutral Supply (Blue or Black) to terminal 2

Earth (Green/Yellow) to

Load

Switch Live, Off peak load –

Primary element (Brown or Red) to terminal 5

Switch Live, Boost load –

Secondary element (Brown or Red) to terminal 4

Heater Neutral (Blue or Black) to terminal 3

Earth (Green/Yellow) to

5Tariff Table

• These are pre-programmed times which can be selected and modiﬁed.

6. Commissioning

Reverse of the font panel

• Contact your energy supplier to check which energy plan you are on,

and whether the off peak times change during winter and summer.

• On the tariff table (located on the reverse of the front panel), ﬁnd which

program collates with your energy plan. Using a terminal screwdriver, turn

the program selector to the correct number for the program (if you want

a program that is not shown on the table, select the closest one to your

desired program and this can be adjusted later).

• On the back of the unit select GMT ONLY or GMT/BST depending

on your energy plan;

• GMT ONLY ﬁxes the time to GMT.

• GMT/BST sets GMT over the winter period, and GMT+1 over the

summer period.

Winter and Summer are displayed according to daylight saving periods

regardless of the switch position.

• Ensure all terminals are secured and screw the front panel of the unit

to the back box using the 2 ﬁxing screws previously removed.

Operating Modes

• OFF: With the rocker switch set to

OFF, there is no output regardless

of the program or boost. The unit

can still be programmed and the

internal battery will charge.

• TIMED: With the rocker switch

set to TIMED, the output will

be according to the program,

or the appropriate boost period.

Auto will be displayed on the

screen in this mode.

Sleep Mode

• If power is removed the screen will go blank after 10 seconds.

The screen will be revived when power is restored.

• The screen can be woken by pressing any button.

• The programmes will remain in the memory when power is off.

Illumination

• Press any button to illuminate the screen. The illumination times out

automatically 60 seconds after the last button press.

• The Economy Light illuminates during off peak times.

• The Boost Button surround illuminates during boost periods.

OFF peak times

• During OFF peak times (selected but the tariff switch) the display

will show;

7. Reset

• Press and hold the + and – buttons simultaneously until the screen

goes blank.

• The factory default settings will now be restored, and the date and time

will need re-programming.

8. Setting the current time and date

• Press the SET button once.

• Release the buttons and after a few seconds all of the digits will appear.

• The word ‘Clock’ will be displayed on the top of the screen along with the

hour ﬂashing.

• Use the + and – buttons to set the required hour

(when adjusting values, hold the + or – button to scroll faster).

• Use the + and – buttons to set the required minutes and press

the SELECT button once to save. The year will start to ﬂash.

• Use the + and – buttons to set the required year and press

the SELECT button once to save. The month will start to ﬂash.

• Use the + and – buttons to set the required month and press

the SELECT button once to save. The day will start to ﬂash.

• Use the + and – buttons to set the required day and press

the SELECT button once to save.

• Press the SELECT button once to save and the minutes will start to ﬂash.

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