Worcester 15-24 SBi (01.11.2001-21.07.2016) Operating instructions

 _ AMORCESTER———
Bosch Group
©
AMNORCESTER
15/24SBi SYSTEM BOILER
MN
(Benchmark)
Worcester Bosch supports the
Benchmark code of practice
G. C. NUMBERS
APPLIANCE NATURAL GAS L. P. G.
| 15SBi 41 311 43 41 311 45 |
| 24SBi 41 311 44 41 311 46 |
USER INSTRUCTIONS &
CUSTOMER CARE GUIDE
| 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
— [0 sta
EXCELLENCE COMES
AS STANDARD
Thank you for purchasing a Worcester gas-fired system
boiler,
Worcester system boilers are made by Worcester Heat
Systems and the strictest quality control standards are
demanded throughout every stage of production.
Indeed, Worcester Heat Systems have led the field in
innovative appliance
design and performance
for more than 30 years.
The result is that your
new Worcester system
boiler appliance offers you
the very best of everything
- quality, efficiency,
economical running costs,
proven reliability and
value for money.
What's more, you also
have the assurance of our
no-nonsense 1 year parts
and labour guarantee.
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And it's backed up by Worcester Care Call - a complete
maintenance scheme to keep your boiler operating at peak
condition and efficiency.
No wonder that more and more people are agreeing that
when it is gas, it has to be a Worcester system boiler.
CONTENTS
Page No.
Operating Instructions
porooecerereece receso ere 2-11
Fault and Breakdowns 12
Maintenance and
Extended Warranty
Information ............ 13-14
Guarantee Details ... 15-16
GENERAL
INFORMATION
GAS SAFETY (INSTALLATION AND USE)
REGULATIONS 1998
It is the law that all gas appliances must be installed by a
competent person in accordance with the above regulations. Failure to
install appliances correctly could lead to prosecution. It is in your
interest and that of safety to ensure compliance with the law. The
manufacturers notes must not be taken, in any way, as over-riding
statutory obligations.
WARNING: This appliance must be earthed and protected by a 3
amp fuse.
ELECTRICITY SUPPLY: 230V ~ 50Hz
IMPORTANT: To get the best from your Worcester system boiler
please read these instructions carefully.
In the event of a fault the appliance should not be used until the
fault has been corrected by a competent person.
GENERAL DESCRIPTION
(See Fig.1.)
The WORCESTER system boilers are sealed system central
heating aplliances. They consist of a gas fired boiler having a varying
output of between 6 - 15kW (15SBi) and 15 - 24kW (24SBi), a
circulating pump and all necessary controls to provide central heating.
They can be connected to a domestic hot water supply system
through an optional, internally fitted diverter valve or to an external S
or Y plan system.
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.
Fig. 1. System Diagram.
Gas to water
Automatic air heat exchanger
vent о /
/
>— Y —
AA
à d
A
pu
A
Boiler
A
{ Expansion
Circulating ~ vessel
She {1
Pressure
” relief valve
„4
N
vd ál al
STUNT A
и + v | +
Diverter valve cy Domestic Domestic CH Relief Valve
(optional) flow hotwater cold return discharge
out supply
GENERAL NOTES
CENTRAL HEATING SYSTEM
During the first few hours of operation of the central heating
system, check that all radiators are being heated at an even rate.
Should the upper area of a radiator be at a lower temperature than the
base of the radiator, it should be vented by releasing air through the
venting screw at the top of each radiator. Make sure your installer
shows you how to carry out the operation. Repeated venting will
reduce the quantity of water in the system and this must be
replenished for safe and satisfactory operation of the appliance.
Should water leaks be found in the system or excessive venting be
required from any radiator, a service engineer should be contacted and
the system corrected.
SEALED HEATING SYSTEM
The appliance must be fitted to a sealed heating
system which is pre-pressurised. In this case your
installer will advise you on the minimum and maximum
pressure that should be indicated on the pressure gauge.
See Fig. 3. Check regularly that this pressure is
maintained and contact your installer or maintenance
engineer if there is a permanent significant drop in
pressure indicated on the gauge. If the system loses
pressure it should be re-pressurised as instructed by the
installer (N.B. Maximum operating pressure 2.5 bar).
Pressurising The System (See Fig. 2).
(If in doubt leave this procedure to your installer).
Remove the bottom panel to gain access to the
filling loop assembly.
Insert the bayonet end of the filling key into the
corresponding cut outs in the filling loop housing and
twist to lock the key in place.
Turn the grey knob anti-clockwise to allow water
ingress and fill until the required pressure is reached.
Turn the grey knob clockwise to stop filling and
remove the filling key by lining up the bayonet end of
the key with the cut outs in the filling loop housing and
withdrawing the key.
N.B. The key must always be removed from the
filling loop housing after the system has been filled to
prevent accidental filling and to comply with Byelaw
14 of the Water Byelaws Scheme.
Store the key in a safe place for future use and refit
the bottom panel
CLEARANCES
Your installer will 15SBi 24SBi
have provided adequate | Left-hand side 10 10
space around the appliance Richt-hand side 10 10
for safety and servicing. Do 5
not restrict this space by [In Front 600 600
the addition of cupboards, |Above 180 180
shelves etc. close to the Below 200 200
appliance.
Minimum clearances in millimetres.
ROOM THERMOSTAT
A room thermostat may be fitted for control of the central heating
temperature. It will be located in one room of the home. The method
of setting a room thermostat varies with the type and manufacture.
Refer to the instructions supplied with the room thermostat.
THERMOSTATIC RADIATOR VALVES
If thermostatic radiator valves are to be fitted to the system then
they must conform to the requirements of BS2767:1972. It is advisable
to leave one valve permanently set at maximum to prevent the boiler
short cycling.
VENTILATION OF ROOM SEALED FANNED
FLUE (RSF) APPLIANCES
These are room sealed appliances and any ventilation openings
in a wall or door must not be obstructed. Do not allow the flue
terminal fitted on the outside wall to become obstructed or damaged.
NOTE: Do not place anything on top of the appliance. If the
appliance is fitted in a compartment do not use the compartment for
storage purposes unless it conforms to the requirements of
BS 6798:1987: Section 6. It is essential that the airing space is
separated from the boiler space by a perforated non-combustible
partition as described in BS 6798:1987.
CIRCULATING PUMP
This may be fitted with a speed adjuster. If so it will be factory
set at maximum and should be adjusted by the installer to suit the
heating load.
FROST PRECAUTIONS
If the appliance is not to be used for a long period of time and
there is a likelihood of freezing, then the appliance should be drained.
The Worcester Heat Systems Technical Helpline will advise you on
suitable frost precautions.
SERVICE
Annual servicing is important in order to ensure continuing high
efficiency and long life for your appliance. In the event of any
difficulty in making suitable servicing arrangements, Worcester Heat
Systems Limited or other competent persons will discuss regular
servicing arrangements and offer a comprehensive maintenance
contract.
WARNING
If a gas leak exists, or is suspected, turn off the gas supply to the
appliance at the service cock and consult your local service engineer.
Do not touch any electrical switches to turn them either on or off.
Open all windows and doors. Do not smoke. Extinguish all naked lights.
CLEANING
Do not use abrasive cleaners on the outer casing. Use a damp
cloth and a little detergent.
OPERATION OF
CONTROLS
(See also label on inside of appliance front panel).
The appliance is fitted with the following controls:
CENTRAL HEATING TEMPERATURE
CONTROL
The position of this knob will determine the temperature of the
water delivered to the radiators between the ‘I’ and ‘MAX’ position.
When the knob is turned anti-clockwise past the ‘I’ position to the
‘OFF’ (Summer Position) the appliance is off.
FACIA MOUNTED PROGRAMMER (if fitted)
Your installer may have mounted a mechanical programmer into
the facia of your appliance. Operating instructions are supplied with
the programmer.
RESET BUTTON
Press and release this button if the appliance fails to operate - if
the appliance still fails to operate then contact Worcester Heat
Systems or your installer.
Fig. 3. Controls.
Mains electricity
Reset indicator
button
|
an Y 7 0°|
д
/ |
7 |
CH temperature System pressure
control knob gauge
TO LIGHT AND STOP THE
APPLIANCE
INDICATOR LIGHTS
Green light:
MAINS : ‘ON’
TO LIGHT THE APPLIANCE
Check that the water valves to the central heating circuit are open.
Check that the grey needle on the pressure gauge is not below
the required pressure.
Switch on the mains electricity. Set the room thermostat, if
fitted, to maximum. Turn the central heating temperature control
knob to ‘MAX’. The burner will light.. Set the central heating and hot
water temperature control knobs and the room thermostat/cylinder
thermostat, if fitted, to the desired temperature.
TO STOP THE APPLIANCE
For Short Periods
Turn the central heating temperature control knob fully anti-
clockwise to the ‘O’ position.
For Long Periods
Turn the CH temperature control knob
switch to the ‘O’ position. Switch off
A facia mounted mechanical
programmer will require resetting if
Clip
(6)
Circulating
pump
Locating peg
©
) mains supply has been disconnected.
ELECTRICITY SUPPLY
FAILURE
If the electricity supply fails the
appliance will not operate. Once the
supply is restored the appliance will
return to normal operation. If a
Expansion
vence! programmer is fitted, check that the
VÁ settings have been maintained.
Gas valve
iN
APPLIANCE LOCKOUT
The appliance can be reset by pressing the reset button. Check
that the gas supply has not been interrupted.
If this condition continues to occur, then call a service engineer.
REMOVAL AND REPLACEMENT
OF THE FRONT PANEL (see Fig. 4)
Removal:
Holding the panel at the edges, slide it upwards to disengage the
clips and ease the top edge forwards and upwards to raise it clear of
the two pegs on the top edge of the facia.
Replacement:
Locate the two holes in the bottom edge of the front panel over
the two pegs on the top edge of the facia and reverse the removal
procedure.
11
12
APPLIANCE FAILS TO
OPERATE
More than 30% of all calls made to Worcester Heat Systems to
report appliance faults or breakdowns prove to be false alarms, as there
is often a simple explanation for the apparent malfunction.
So, to help you save time and money — not to mention frustration
and inconvenience — please refer to the General Information, Notes and
Lighting Instructions ensuring all controls are set correctly.
If, after following the instructions the appliance still fails to operate
correctly call the Worcester Heat Systems Service Centre. Arrangements
will be made for an engineer to call as soon as possible.
CALL-OUT CHARGES
All of our field service engineers are factory trained.
If you request a visit from an engineer and your appliance has been
installed within the last 12 months, no charge will be made for parts
and/or labour, providing:
* The appliance was commissioned correctly on installation.
* An appliance fault is found and the appliance has been installed
within the past 12 months.
A call-out charge will be made where:
* The appliance has been installed for over 12 months, or
* Our Field Service Engineer finds no fault with the appliance (see
note), or
* The cause of breakdown is with other parts of your
plumbing/heating system, or with equipment not supplied by Worcester.
NOTE: Invoices for attendance and/or repair work carried out on
your appliance by any third party will not be accepted.
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.
[EAT SYSTEMS LID | 1
Way, Warndon,
Lr WR4 95W
—" |
/
Regular service contracts can be arranged with your installer
— however if you have difficulty making a satisfactory
arrangement simply contact Worcester Heat Systems on
0345 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.
13
S
A SERVICE CENTRES
CONTACT NUMBERS:
UK Call Centre Tel. 08457 256 206
UK Call Centre Fax. 01905 757536
Scotland only Fax. 01506 441 687
OPERATING HOURS:
Mon - Fri 8.00am to 6.00pm
Sat 8.30am to 1.00pm
Please contact our UK Call Centre number where our friendly operators
will book your call with one of our team of nationwide engineers.
NOTE:
Sunday and Bank Holiday cover is not available
IMPORTANT
Do not touch or adjust any sealed component
14
YOUR WORCESTER
SYSTEM BOILER
GUARANTEE
Já
This appliance is guaranteed against faulty materíals or
workmanship for a period of twelve calendar months from the
date of installation subject to the following conditions and
exceptions.
. That during the currency of this
guarantee any components of the
unit which are proved to be faulty
or defective in manufacture will be
exchanged or repaired free of
material charges and free of labour
charges by Worcester Heat Systems
Limited.
. That the householder may be asked
to prove the date of installation,
that the appliance was correctly
commissioned and, where
appropriate, the first 12 month
service has been carried out to the
satisfaction of Worcester Heat
Systems Limited when requested.
. That any product or part thereof
returned for servicing under the
guarantee must be accompanied by
a claim stating the Model, Serial
Number, Date of Installation.
. That Worcester Heat Systems
Limited will not accept
responsibility for damage caused by
faulty installation, neglect, misuse
or accidental damage, the non-
observance of the instructions
contained in the installation and
Operating Instructions Leaflets.
5. That the appliance has been used
only for normal domestic purposes
for which it was designed.
6. That this guarantee applies only to
equipment purchased and used in
mainland Great Britain,
This guarantee is given in addition to all your normal statutory rights.
15
LJ GUARANTEE
REGISTRATION
You should complete and return the postpaid Guarantee
Registration Card within 14 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: SERIAL NUMBER. Copy the number off the
Guarantee Card.
FOR YOUR OWN RECORD
MODEL SERTAL NUMBER
(See identity label inside appliance casing)
TYPE/SIZE DATE OF INSTALLATION
CORGI CONTACT
All CORGI Registered installers carry a CORGI ID card and
have a registration number. Both should be recorded in your
central heating log book. You can check your installer is
CORGI Registered by calling CORGI on 01256 372300
WORCESTER
Bosch Group
EXCELLENCE COMES AS STANDARD
Worcester Heat Systems Limited. Cotswold Way, Warndon, Worcester WR4 9SW.
Telephone: (01905) 754624. Fax: (01905) 754619.
Technical Service Helpline 08705 266241.
www.worcester-bosch.co.uk 8716 145 192d 11/(