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uSEr cONTrOLS
3.0
The user controls consist of a central heating programmer, boiler 'on-off' switch
and a 4 digit display as shown in figure 3.1. The boiler 'on-off' switch should be
left in the ON position which is indicated by a flame symbol for normal operation,
otherwise the built in boiler frost protection will not function. The four digit
display indicates the status of the boiler and the pressure in the heating system.
The push buttons below the display are used for setting and resetting the
controller and these functions are shown in figures 3.3A and 3.3B. For further
details see the 'User Instruction Manual' supplied with this appliance.
Central Heating
Figure 3.1
Programmer
3.1 cENTrAL HEATING PrOGrAMMEr (FIGurE 3.2)
The programmer controls the central heating system only and can be
set to control at 15 minute intervals. The 3 position switch allows the
central heating to be either permanently off, timed or constantly on.
a)
constant (top) position:
The heating will be on constantly irrespective of the position of
the tappets. The central heating will only be controlled by the main
appliance controls and/or any external controls e.g. room thermostat.
b)
Timed (central position):
The heating will operate according to the position of the tappets and
will be controlled during the on period by the main appliance controls
and/or room thermostat.
c)
Off (Bottom position):
No central heating available.
Note: Domestic hot water will operate on demand irrespective of the
position of the 3 position switch.
To set the time of day:
Turn the minute hand clockwise to align the pointer with the correct
time to the nearest 15 minutes ensuring that AM/PM is considered.
DO NOT at any time attempt to rotate the bezel anti-clockwise.
To set heating times:
Decide the central heating 'on' and 'off' times of the day the central heating
is required. Move the 3 position switch to the timed (central) position. The
central heating will operate when the tappets are set to the outer edge of the
bezel. Each tappet represents 15 minutes. Therefore set the tappets towards
the outer edge for the time periods the heating is required to be 'on' and set
the tappets towards the centre for the time heating is required to be 'off' .
Boiler
4 Digit
On/Off Switch
Display
D1 D2 D3 D4
S2
S1
S3
Set/Reset
Page 1
Figure 3.2
Tappets
Minute Hand
I : Constant
Top Position
3 Position Switch shown at
Timed Central Position
0 : Off
Bottom Position
Figure 3.3a
Boiler Display
Indicator
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