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THE LP522Si 5/2-DAY ELECTRONIC PROGRAMMER Cont...
Changing the timings
Press the SET? button and you’ll see ‘SET PROG?’.
Set the weekday central heating
Press the YES button, and the display will ask ‘SET CH MON to
FRI PROG?’.
Press YES and you’ll see ON1, the start of your first central heat-
ing period. Adjust it in 1-minute steps using the – and + but-
tons. If the – and + buttons are held down, the time changes in
10-minute steps.
PROG?
MON TUE WED THU FRI
CH
PROG?
THE LP241Si 24hr ELECTRONIC PROGRAMMER Cont...
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 on
the standard program ON2 and OFF2 are set to the same time for
both central heating and hot water. * This means your system won’t
respond, but if you want to activate that middle period, or change
any other timings – read on.
Changing the timings
Press the SET? button and you’ll see ‘SET PROG?’.
Set the central heating
Press the YES button, and the display will ask ‘SET CH PROG?’.
Press YES and you’ll see ON1, the start of your first central heat-
ing period. Adjust it in 1-minute steps using the – and + but-
tons. If the – and + buttons are held down, the time changes in
10-minute steps.
PROG?
PROG?
CH
Press SET?, and you’ll see OFF1, the end of your first central
heating period. Adjust this in the same way, press SET?, then
repeat the procedure for ON2, OFF2, ON3 and OFF3.
Set weekday hot water
When you press SET? after setting OFF3 for the central heating,
the display will ask ‘SET HW MON to FRI PROG?’.
Press YES, then set your times in the same way. Remember, in
this mode you can have different times to your central heating if
you wish.
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
