15/24SBi SY
STEM B
OIL
ER
USER INSTRUCTIONS &
CUSTOMER CARE GUIDE
13
4
Central Heating
When a demand is made for heating by the system controls
(i.e. a programmer or room thermostat). The pump will energise
circulating primary water around the heating system and the burner
will light. The heat output from the appliance in this mode has been
factory set to mid-range or as reset by your installer. The appliance
will operate as necessary
to maintain the
temperature of the
radiators at the level set
by the adjustment of the
Heating Temperature
Control Knob. (See Fig. 2.)
If the system no
longer requires output to
maintain the desired
room temperature, the
burner will extinguish.
The pump will continue
to run for a short period
to dissipate the residual
heat from the appliance
and then switch off.
The appliance will
supply heat to the central
heating system as
required.
Hot Water
A hot water cylinder will
be maintained full of hot
water under the control of
a cylinder thermostat.
IMPORTANT:
THIS APPLIANCE IS FOR USE WITH NATURAL GAS OR LPG.
THESE INSTRUCTIONS APPLY IN THE UK ONLY.
THESE INSTRUCTIONS ARE TO BE LEFT WITH THE USER OR AT THE GAS METER
GUAR
ANTEE
REGISTRA
TION
You should complete and return the postpaid Guarantee
Registration Card within 30 days of purchase.
The card will register you as the owner of your new
Worcester system boiler and, while this will not affect your
statutory rights in any way, it will assist us to maintain an
effective and efficient customer service by establishing a
reference and permanent record for your boiler.
IMPORTANT:
SERIALNUMBER. Copy the number off the
Guarantee Card.
FOR YOUR OWN RECORD
MODEL
SERIAL NUMBER
(See identity label inside appliance casing)
TYPE/SIZE
DATE OF INSTALLATION
MAINTAINING YOUR
APPLIANCE
Your new Worcester system boiler represents a long-term
investment in a reliable, high quality product.
In order to realise its maximum working life, and to ensure
it continues to operate at peak efficiency and performance, it is
essential that your boiler receives regular, competent servicing
and annual maintenance checks beyond the initial 12 month
guarantee period.
Regular service contracts can be arranged with your installer
– however if you have difficulty making a satisfactory
arrangement simply contact Worcester on
08457 256206
for
help.
If you would like to know more about Worcester’s extended
warranty options please tick the appropriate box on your
warranty registration card.
Fig. 1. System Diagram.
Automatic air
vent
Gas to water
heat exchanger
Circulating
pump
Diverter valve
(optional)
CH
flow
Domestic
hot water
out
Domestic
cold
supply
CH
return
Relief Valve
discharge
Pressure
relief valve
Boiler
Expansion
vessel
G. C. NUMBERS
APPLIANCE
NA
TURAL GA
S
L. P . G.
15SBi
41 311 43
41 311 45
24SBi
41 311 44
41 311 46
8 716 145 192e 10/05
SBi
CORGICONT
ACT
All
CORGIRegistered
installers carry a
CORGIID
card and
have a registration number. Both should be recorded in your
central heating log book. You can check your installer is
CORGIRegistered
by calling
CORGI
on
01256 372300
Worcester, Bosch Group, Cotswold Way, Warndon, Worcester WR4 9SW.
Telephone: 01905 754624 Fax: 01905 753130.
Technical Helpline 08705 266241.
Worcester, Bosch Group is a trading name of BBTThermotechnology UK Limited
www.worcester-bosc
h.co
.uk
Worcester supports the
Benchmark code of practice
Vote for your
‘Installer of the year’ at
www.worcester-bosch.co.uk
