Pre-Set Programs; Setting Ch Mon - Fri; Setting Hw Mon - Fri - Worcester DT20 Instruction Manual

1
1
1st 1st 2nd 2nd
ON OFF ON OFF
Central Heating:
MON to FRI
Time 6:30 8:30 12:00 12:00 16:30 22:30
SAT & SUN
Time 7:00 9:00 12:00 12:00 16:00 23:00
Hot Water:
MON to FRI
Time 6:30 8:30 12:00 12:00 16:30 22:30
SAT & SUN
Time 7:00 9:00 12:00 12:00 16:00 23:00
6

PRE-SET PROGRAMS

FITTING & OPERATING INSTRUCTIONS FOR WORCESTER BOSCH
PRE-SET PROGRAMS
If you need to restore the factory
pre-set program times then:
1 Press the '-' and '+' buttons
together to restore the default
program times to those shown in
the table opposite.
The default ON/OFF periods pre-
programmed for CH and DHW are
shown in the table opposite.
Note: two ON/OFF periods can be
used instead of 3 by setting the 2nd
ON & OFF periods to 12.00 as
shown in the default program table.
One ON/OFF period can be
achieved by setting the 2nd and 3rd
ON & OFF periods to the same time.
Note: The clock time is pre-
programmed and should not
require adjustment.
3rd 3rd See 'SETTING PROGRAMS' in the
ON OFF USER INSTRUCTIONS section if
changes are required to the clock
time or pre-programmed settings.
TWIN CHANNEL DT20 PROGRAMMER
8-716-106-647 issue b (11.04) UK
1
2
3
4
5 5
6
7 7
8
3rd CH OFF
9
FITTING & OPERATING INSTRUCTIONS FOR WORCESTER BOSCH
TWIN CHANNEL DT20 PROGRAMMER
8-716-106-647 issue b (11.04) UK
SETTING PROGRAMS
Note: if you require different ON/OFF
times during the week, see ‘Setting
individual days’

Setting CH MON - FRI:

1 Press 'set?' until ‘SET’ & 'PROG?'
are shown in the display
2 Press 'OK' to enter program
3 Press 'OK' to select MON-FRI
4 Press 'OK' to select CH
Note: speed up the display by holding
down the ‘+’ or ‘-’ buttons.
5 Press ‘+’ or ‘-’ to change the ON
time
6 Press ‘set?’ to set the ON time and
select the OFF time
7 Press ‘+’ or ‘-’ to change the OFF
time
8 Press ‘set?’ to set the OFF time and
select the next ON time
Repeat operations 5 to 8 to set the
2nd and 3rd CH ON/OFF times.
Note: after pressing ‘set?’ for the 3rd
CH OFF time the display shows ‘SET’
HW MON-FRI

Setting HW MON - FRI

9 Press ‘OK’ to select the first ON time
Repeat operations 5 to 8 to set the
1st, 2nd and 3rd HW ON/OFF times.
Note: after pressing ‘set?’ for the 3rd
HW OFF time the display shows ‘SET’
MON . . . see next page
7
SETTING PROGRAMS