425 Coronet
Electro-mechanical Timeswitch
User Operating Instructions
The 425 Coronet timeswitch is a single circuit central
heating timeswitch able to switch ON and OFF twice
every 24 hours. An advance switch is provided to make
temporary overrides to the ON or OFF periods and a
selector switch gives a further choice of programmes.
1
The 425 Coronet Timeswitch
The simple instructions contained in this user guide are
designed to help with the programming and operation of
this unit.
DIAL
PROGRAMME
TAPPETS
ADVANCE
CONTROL
SELECTORS
TIME
POINTER
Setting The Time Of Day
The dial rotates clockwise and makes one complete
revolution every 24 hours.
To set the correct time
turn the dial clockwise
by hand (using the
levers on the clock face)
until the correct time of
day is against the line
marked TIME. (See
diagram opposite).
2
Setting The On/Off Times
The four setting tappets, coloured
red and blue, are moved around
the circumference of the dial to set
your required ON and OFF times.
These tappets work in pairs to
switch the system ON and OFF.
- No 1 (red) 1st ON and No 2 (blue)
1st OFF
- No 3 (red) 2nd ON and No 4
(blue) 2nd OFF
The tappets may be moved in either direction. (See diagram)
Please ensure that you press and hold down any tappet that is to
be moved, release tappet only once correct time position has
been reached.
Tappets cannot be moved across the Time line. The position of
the dial may have to be altered to set the initial ON/OFF time.
Please ensure the clock is set to the correct current time after
altering the ON/OFF settings.
Lightly Press
Down On
No 1 Tappet.
Move Tappet
Until Reaching
The Desired
On Time
Lightly Press
Down On
No 2 Tappet.
Move Tappet
Until Reaching
The Desired
Off Time
Repeat
Previous
Instructions
For 2nd On/Off
Settings.
Using Tappets
3 And 4
Move The
Programme
Selection
Switch To
The
Required
Position
3
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