3
The boost facility will allow the user to boost the hot water channel which is currently
‘OFF’ for 1 hour. To indicate the boost being activated BOOST will be shown on the display
for the duration of the boost period. The hot water channel ON indicator will also be
illuminated.
The advance facility will allow the user to switch the central heating channel ‘ON’ which
is currently ‘OFF’ or switch the central heating channel ‘OFF’ which is currently ‘ON’. To
indicate the advance feature being activated ADVANCE will be shown on the display
until the next programme switching time. The central heating ON indicator will also be
illuminated.
The installer will have set the programmer to suit the installed system. This is normally a
Fully Pumped system which will allow independent control of the central heating and hot
water, however on an old Gravity system the central heating and hot water are linked so
that it is not possible to use the central heating independently. This will allow only one
common time setting for both hot water and central heating, and will become apparent
when setting the ON and OFF times as both will be indicated together.
AUTO
ALL DAY
24 HRS
OFF
HW CH
AUTO
ALL DAY
24 HRS
OFF
6:35
6:35
PM
PM
RUN
CLOCK
HW PROG
CH PROG
RUN
CLOCK
HW PROG
CH PROG
BOOST
ADVANCE
HW CH
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