11
Programmers allow you to set ‘On’ and ‘Off’ time periods.
Some models switch the central heating and domestic hot
water on and off at the same time, while others allow the
domestic hot water and heating to come on and go off at
different times.
Set the ‘On’ and ‘Off’ time periods to suit your own lifestyle.
On some programmers you must also set whether you want
the heating and hot water to run continuously, run under the
chosen ‘On’ and ‘Off’ heating periods, or be permanently off.
The time on the programmer must be correct. Some types
have to be adjusted in spring and autumn at the changes
between Greenwich Mean Time and British Summer Time.
You may be able to temporarily adjust the heating pro-
gramme, for example, ‘Override’, ‘Advance’ or ‘Boost’. These
are explained in the manufacturer’s instructions.
The heating will not work if the room thermostat has switched
the heating off. And, if you have a hot-water cylinder, the
water heating will not work if the cylinder thermostat detects
that the hot water has reached the correct temperature.
User’s Instructions
DUAL
CHANNEL
First you set the times that are going to be the same for each
weekday, then you can select each day individually and make
any further adjustments. If you want each day to be quite
different, go straight to ‘Set each day’.
Press the YES button, and the display will ask ‘SET MON to FRI
PROG?’.
Press YES and you’ll see ON1, the start of your first heating peri-
od. Adjust it in 1-minute steps using the – and + buttons.
If the – and + buttons are held down, the time changes in
10-minute steps.
Press SET?, and you’ll see OFF1, the end of your first heating
period. Adjust this in the same way, press SET?, then repeat
the procedure for ON2, OFF2, ON3 and OFF3.
Set each day
If, after you’ve set OFF3 you want to fine-tune one or more
weekdays, press SET? until you find the first day you want to
adjust – then go through the procedure, altering any time you
wish. Press SET? to move on to the next day. When you’ve
finished, press SET? until you see ‘SET SAT SUN PROG?’.
If you don’t want to alter any individual days, keep pressing
SET? until you see ‘SET SAT SUN PROG?’.
Set weekend
PROG?
MON
PROG?
MON TUE WED THU FRI
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 is
already on, using Boost will extend the ON time by one, two or
three hours.
Over-riding the program
At the side of the display there
are four operating modes:
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.
Use the SELECT button under the flap to change the
mode.
This won’t alter the timings in your program, which you
can return to by selecting TIMED.
THE LP111Si 24hr ELECTRONIC TIMESWITCH
LP111Si – a 24hr program, up to 3 heating periods each day,
and every day the same.
Want to leave a timing as it is? Just press SET? and move on
to the next one.
If you need to reset your timings to the standard program
and start again, press ‘SET’ and ‘+’ together to go back to
the pre-set program.
The standard program
Your system will come on for up to 3 heating periods every
24hrs. ON1 starts the first one, OFF1 finishes it, and so on.
Notice that ON2 and OFF2 are set to the same time.* This
means your system won’t respond, but if you want to activate
that middle period or change any other timings – read on.
SWITCHING
STANDARD PROGRAM
ON 1
– start of first timed period
6.30am
OFF 1
– end of first timed period
8.30am
ON 2
– start of second timed period*
12.00pm
OFF 2
– end of second timed period*
12.00pm
ON 3
– start of third timed period
4.30pm
OFF 3
– final switch-off of the day
10.30pm
