Worcester 15SBi Manual

Bosch Group
15SBi & 24SBi
System Boilers
TWIN CHANNEL MECHANICAL
TIMESWITCH INSTALLATION &
OPERATING INSTR CTIONS
THESE INSTRUCTIONS APPLY IN THE U.K. ONLY
THESE INSTRUCTIONS ARE TO BE LEFT WITH
THE USER OR AT THE APPLIANCE
General information i given in the u er in truction leaflet di patched
with the appliance and on the lighting in truction plate fitted on the
appliance.
7716 192 020

Gas Safety (Installation and Use) Regulations 1998: All gas appliances must be installed
by a competent person in accordance with the above regulations. Failure to install the
appliance correctly could lead to prosecution. The manufacturers notes must not be
taken in any way as overriding statutory obligations.
IMPORTANT: Read these instructions carefully in order to get the best from your appliance.
WAR N I N G: This appliance must be earthed and protected by a 3A fuse if a 13A plug is used,
or, if any other type of plug is used, by a 5A fuse either in the plug or adaptor or at the
distribution board.
24 hour twin channel mechanical timeswitch. User maintenance is not possible.
CONTROL
Any number of ON and OFF periods can be chosen within a 24 hour period.
There will be at least a 15 minute separation between the operations.
Before starting work, turn off the mains electricity supply to the appliance.
Remove the front panel from the appliance by sliding it upwards to clear the locating pegs and
securing clips.
Remove the three screws securing the bottom panel to the fascia.
Remove the two screws securing the fascia assembly to the appliance and lower it forwards to
the servicing position.
Remove the timeswitch blanking plate from the front of the fascia by carefully releasing the clips
at the rear right-hand side and withdrawing the plate from the front.
Feed the electrical lead from the timeswitch through the fascia to exit directly underneath it and
fit the timeswitch by hooking the top two lugs up into the facia slots and then push the bottom
two clips until they snap into position.
From the rear of the fascia, remove the plastic splash cover to reveal the electrical connection
box and remove the two screws securing the cover to the box.
Secure the cable from the timeswitch using the clamping positions on the underside of the fascia
and the rear of the electrical connection box and plug the cable into the corresponding five-way
socket on the rear of the fascia.
Replace the electrical box cover, splash cover and fascia bottom panel, secure the fascia using
the two screws and refit the front panel
TIMESWITCH
TO FIT THE TIMESWITCH
Clamp cable here
Connect plug from
timeswitch here

The selector switch allows the timer to control either the hot water only or both the
central heating and the hot water.
TO SET THE CLOCK
Turn the dial clockwise until the correct time of day is at the pointer.
TO SET THE DEMAND PERIODS
To set the ON periods push the grey tappets towards the centre from the start of the peri-
od until the end of each period. Each tappet represents a 15 minute time period.
OPERATIONAL NOTES
Switching:
The switching options are:
0Off all the time
AUTO On and Off as selected by the adjustment of the tappets
IOn all the time
Refer to the User operating instruction leaflet or the lighting instruction plate on the
appliance.
TO SET THE TIMESWITCH
TO LIGHT AND STOP THE APPLIANCE
Selector switch
Hot Water only
Time pointer
Hot Water
and heating
Dial
Switching options
Tappets
(push towards
centre for ON)

Bosch Group
WORCESTER HEAT SYSTEMS
Cotswold Way,
Warndon,
Worcester WR4 9SW
Tel: [phone] Fax: [phone] 145 202b 09/01