10
Using the Programmer
The 2 switches are used to select how the 4033 controls your
hot water and heating. The heating and hot water can be
operated independently, in various combinations.
Each of the selector switches can be put into one of three
positions marked ‘TIMED’, ‘OFF’ and ‘ON’. They operate
completely independently of one another, letting you select
different programmes for each service.
HEATING switch
TIMED - the Heating will be switched ON and OFF
according to the times at which the tappets have been
set.
OFF - the Heating will ignore the tappet positions and
remain OFF (this enables the heating to be switched off
during the Summer).
ON - the Heating will be ON constantly. This enables
you to switch the Heating ON during a period when the
time clock is off.
Using the programmer
ON
OFF
TIMED
ON
TIMED
OFF
HEATING
WATER
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