Bosch Appliances Boiler 15SBI User Manual

15SBi & 24SBi SYSTEM BOILERS  
TWIN CHANNEL DIGITAL  
PROGRAMMER INSTALLATION &  
OPERATING INSTRUCTIONS  
General information is given in the users instruction leaflet despatched with the  
appliance and/or on the lighting instruction plate fitted to the appliance.  
I AUTO O  
RUN DHW CH  
M
T
W
Th  
F
S
Su  
8:37  
P
DAY  
HR  
MIN  
ADV  
Set  
Reset  
THESE INSTRUCTIONS APPLY IN THE UK ONLY THESE INSTRUCTIONS  
ARE TO BE LEFT WITH THE USER OR AT THE APPLIANCE  
 
PROGRAMMER OPERATING INSTRUCTIONS  
TO SET PRESENT TIME AND DAY  
Set right switch to RUN.  
Press HR & MIN buttons together (until colon stops flashing)  
After 15 seconds the colon will start flashing again signifying the settings cannot be changed. Repeat this step if you still want  
to set time and day.  
Press DAY button until arrow points to correct day.  
Press HR and MIN buttons separately until correct time is displayed.  
Set right switch to DHW then back to RUN (or leave for 15 seconds) to start the clock.  
Normal run mode  
Permanent off  
Fig. 2.  
Set DHW programme  
Set CH programme  
Timed programme  
Permanent on  
I AUTO O  
RUN DHW CH  
Channel 1 (DHW)  
Channel 2 (CH)  
Monday to Sunday  
M
T
W
Th  
F
S
Su  
1 2  
3
Actual time or set time  
8:37  
Demand symbol (light bulb)  
Advanced symbol  
P
DAY  
HR  
MIN  
ADV  
Set  
Step through programme  
Reset  
Programmer step number  
Advance button  
Set actual or  
programme day  
Set time or  
programme hours  
Set time or  
programme minutes  
TO SET PROGRAMME TIMES  
This programmer provides eight switch periods per channel, with a day selection of Mon...Fri, Mon...Sat,  
Sat/sun, all days together or all days individually. If it is considered confusing to programme all variations, the  
following describes two levels of setting the programme; simple or full-function;  
SIMPLE PROGRAMME SETTING  
The programmer has an in-built programme of ‘standard’ switching times shown in the table. These may be  
changed to suit your specific requirements.  
PROGRAMME STEP  
STANDARD PROGRAMME  
DHW MON-FRI CH MON-FRI  
1
2
3
4
6.30am  
6.30am  
8.30am  
4.30pm  
10.30pm  
SAT-SUN  
7.00am  
8.30am  
4.30pm  
10.30pm  
SAT-SUN  
7.00am  
5
6
7
8
9.00am  
4.00pm  
11.00pm  
9.00am  
4.00pm  
11.00pm  
2
 
Set right switch to DHW.  
The display shows weekdays Mon...Fri and the first standard on-time (programme step 1)  
Press HR & MIN buttons for your required first on time for the week.  
Press  
P
Display shows the first standard off-time (programme step 2)  
Press HR & MIN buttons for your required off time.  
Use buttons P HR and MIN as above for next weekday switch period, then the two weekend  
periods, finishing with programme step 8.  
Odd programme step numbers are on times and even numbers are off times.  
Set right switch to CH and repeat above for all central heating programmes.  
Set right switch to RUN.  
NOTE: The standard programme also contains further programme steps 9-16. These should be ‘switched off’ ie  
the display should flash 0.00 at each of these steps. To check this press P again to view these switch points. If  
required, these can be switched off by pressing ADV then P TOGETHER for 5 seconds, then release the buttons.  
In case of confusion or errors you can completely reset the programmer. See ‘Reset’ section.  
FULL-FUNCTION PROGRAMME SETTING  
It is possible to set your programme requirements to 8 switch periods (per channel) over  
combinations of days, weeks and weekends.  
Set right switch to DHW.  
Use the P , DAY, HR and MIN buttons to create the desired programme times as follows;  
P to step to the next switch time.  
DAY to set the day (or days) at which the switch time occurs  
HR & MIN to set the hours and minutes for the switch time.  
Set right switch to CH and repeat above for all central heating programmes.  
Right switch to RUN.  
IMPORTANT NOTES  
An ‘odd’ programme step number is always the ON time.  
An ‘even’ programme step number is always the corresponding OFF time.  
Hence the eight switch periods are programme steps 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16.  
The day (or days) setting must be indentical for the on time and corresponding off time.  
TO VIEW PROGRAMME TIMES  
Set right switch to DHW or CH as required.  
Repeatedly press  
automatically scrolls through the switch times).  
P
to scroll through the on and off times (or keep  
P
depressed and the unit  
If switch times are to be changed, simply use HR and MIN buttons when displayed.  
Set right switch to RUN.  
NORMAL RUNNING  
Right switch must be in the RUN position  
Left switch should be in AUTO position  
The programmer will automatically operate according to your set programme periods. In addition  
to actual time and day, various smaller characters may also be displayed on the right of the screen.  
See Fig 2.  
ADVANCE FACILITY  
It is possible to change the programme to the next on or off period in advance of the set time.  
The switches must be in the AUTO and RUN positions.  
3
 
To advance HW mode, press ADV once.  
To advance CH mode, press ADV twice.  
When a channel is ‘advanced’ the  
symbol appears at the bottom right of the display, and the channel number  
will change to on (or off).  
PERMANENT ON  
Right switch must be in the RUN position.  
Set left slide switch to I.  
For permanent HW demand, press ADV once  
For permanent CH demand, press ADV twice.  
The channel number will flash for 3 seconds and then stay on.  
To cancel, set left slide switch back to AUTO  
PERMANENT OFF  
Right switch must be in the RUN position.  
Set left slide switch to O.  
For permanent HW off, press ADV once  
For permanent CH off, press ADV twice.  
When set to permanent off, the selected channel will permanently flash.  
To cancel, set left slide switch back to AUTO  
RESET  
In case of confusion or errors, the programmer can be completely reset by pressing the Reset  
button with a small implement such as a biro  
The right switch must be in the RUN position.  
The display will flash zeros and the programme times will reset to their standard times.  
Start again at section ‘To Set Present Time and Day’.  
HELPFUL HINTS  
G Channel 1 is DHW, channel 2 is CH.  
G If you get stuck whilst programming, set right switch to RUN then back to DHW (or CH)  
G An ‘odd’ programme step number is always the ON time.  
An ‘even’ programme step number is always the corresponding OFF time.  
G For every odd number (on time) the corresponding even number (off time) must use the  
same day(s).  
4
 
WORCESTER HEAT SYSTEMS LTD (Bosch Group) Cotswold Way, Warndon, Worcester WR4 9SW.  
This booklet is accurate at the date of printing but will be superseded and should be disregarded if specifications  
and/or appearances are changed in the interests of continued improvement. All goods sold are subject to our official  
Conditions of Sale, a copy of which may be obtained on application  
8 716 115 024a (05/08)  
 

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