Three Position Switch - Potterton Gold 24 HE Installation & Service Instructions Manual

Time Pointer
Constant
Timed
Off
0
IN
Rotate to adjust time
GRASSLIN
Off Position
8
0
On Position
Time Pointer
Setting the Timer
The Electro-Mechanical Timer allows the central
heating system to be set every 15 minutes.
Using the three position switch the timer will allow
either constant operation, timed operation or
central heating off.
Move the switch button by sliding to the desired
position.
Three position switch (Fig. 17)
Fig. 17
0
To set the time of day
Turn the timer outer bezel clockwise, to align the
pointer with the correct time to the nearest 15
minutes
ensuring that A.M./P.M. is considered.
Do not at any time attempt to turn the bezel
anti-clockwise.
To set the timed heating program
Decide which times of the day the central heating
is required.
The heating will operate when the white tappets
are set to the outer edge of the bezel.
To ensure the heating stays OFF set the required
tappets inwards towards the centre of the bezel.
Each tappet represents 15 minutes.
For example: If the heating is not required between
10 A.M. and 11 A.M. the four tappets anticlockwise
from the 10 A.M. will be set inwards (Fig. 18).
Fig. 18
Constant (Top position): The heating will
be on constantly irrespective of the position
of the tappets.The heating will be controlled
by the main thermostat on the appliance
and/or any external controls.
Timed (Central position): The heating will
operate according to the position of the
tappets and be controlled as above.
Off (Bottom position): No central heating.
Domestic hot water will operate on demand.
Publication No. 5116283