DAY-TO-DAY VARIATIONS
Switching on and off
On the front of the programmer there are two
Advance/Boost
buttons – one for central heating and one for hot water. They
allow you to switch your system either on or off, irrespective of the
program. So if the heating or hot water is off, and you want
warmth or hot water now, you can either –
1. Press
Advance
to switch it on (ADV will be displayed), and it will
stay on until the end of the next period. Or if the heating/hot water
is on and you don’t need it, press Advance and it will go off until
the beginning of the next ON period.
Advance will only operate in TIMED or ONCE modes.
2. Press & Hold
Boost
to switch on for an extra hour ( & BST will
be displayed), then Press again for two ( ) or three ( ) hours.
To cancel Boost, Press Boost again ( ). Or if the heating/hot
water is already on, using Boost will extend the ON time by one,
two or three hours.
Over-riding the program
Sometimes you might need to change the way you use your
central heating or hot water temporarily – perhaps due to an
unusually cold day, or exceptional demand for hot water.
Here’s how to do it – without affecting your program.
On each side of the display there
are four operating modes-
one group for central heating, the
other for hot water. You can
change modes with immediate effect by using the appropriate
SELECT button. This won’t alter the timings in your program,
which you can return to by selecting TIMED
.
OFF
= continuously off.
TIMED
= on for up to 3 periods a day.
ONCE
= on for 1 period a day, from the start of ON1
to the end of OFF3.
ON
= continuously on.
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