Table of Contents
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24-28Si II SERIES
APPLIANCE
24Si II
28Si II
USER INSTRUCTIONS &
CUSTOMER CARE GUIDE
u r
V o t e f o r y o
f t h e y e a r '
' I n s t a l l e r o
e s t e r - b o s c
w w w . w o r c
G.C. NUMBERS
NATURAL GAS
47 311 65
47 311 67
Worcester supports the
Benchmark code of practice
a t
h . c o . u k
L.P.G.
47 311 66
47 311 68
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Summary of Contents for Worcester 24Si II series
- Page 1 . w o r c 24-28Si II SERIES G.C. NUMBERS APPLIANCE NATURAL GAS L.P.G. 24Si II 47 311 65 47 311 66 28Si II 47 311 67 47 311 68 Worcester supports the Benchmark code of practice USER INSTRUCTIONS & CUSTOMER CARE GUIDE...
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Page 2: Excellence Comes As Standard
AS STANDARD Thank you for purchasing a Worcester SiII Series gas-fired combination appliance. The SiII Series appliances are made by Worcester and the strictest quality control standards are demanded throughout every stage of production. Indeed, Worcester, part of the Bosch Group have led the... -
Page 3: General Information
WARNING: This appliance must be earthed and protected by a 3 amp fuse to BS 1362. ELECTRICITY SUPPLY: 230V ~ 50Hz IMPORTANT: To get the best from your Worcester Si II appliance please read these instructions carefully. NOTE: In the event of a fault the appliance should not be used until the fault has been corrected by a competent person. - Page 4 Hot Water Mode: The appliance operates to supply only domestic hot water when the heating temperature mode is fully anti-clockwise, at the – position or the timer is programmed to OFF mode. The flow is limited within the appliance to give a hot water delivery rate to a maximum of 9.0 (±15%) litres/minute-25Si or 10.0 (±15%) litres/minute-28Si.
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Page 5: General Notes
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. -
Page 6: Room Thermostat
Flow balancing using ‘Ball-o-Fix’ type valves is recommended to avoid an excessive reduction in flow to individual outlets. For further information contact The Worcester Technical Helpline. HOT AND COLD FLOW... - Page 7 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 Technical Helpline will advise you on suitable frost precautions. For short periods the built-in frost protection of the appliance will be adequate.
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Page 8: Operation Of Controls
OPERATION OF CONTROLS The appliance is fitted with the following controls: OPERATING SWITCH In the ‘0’ position there is no mains electricity to the control board. In the ‘I’ position mains electricity is connected to the control board. CENTRAL HEATING TEMPERATURE CONTROL The position of this knob will determine the temperature of the water delivered to the radiators between fully clockwise and anti-... -
Page 9: Indicator Lights
INDICATOR LIGHTS Flame detection indicator: OFF: Burner off Burner on Fault indicator: FLASHING SLOW: Ignition lockout or (once per second) boiler overheat FLASHING FAST: Appliance fault (five times a second) Fig. 2. Controls. Mains electricity Flame detection Fault indicator and System pressure On/Off indicator... - Page 10 TO LIGHT AND STOP THE APPLIANCE TO LIGHT THE APPLIANCE Check that the water valves to the central heating circuit are open. Check that the black needle on the pressure gauge is not below the required pressure. Switch on the mains electricity. Set the room thermostat to maximum.
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Page 11: Ignition Lockout
IGNITION LOCKOUT The appliance will enter a lockout condition in the event of the burner failing to ignite. If the burner fails to light after 5 attempts the electricity supply to the gas valve will be interrupted. If ignition lockout has occurred, the fault indicator will flash slowly (approximately once per second). - Page 12 Lighting Instructions ensuring all controls are set correctly. If, after following the instructions the appliance still fails to operate correctly call the Worcester Contact 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.
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Page 13: Maintaining Your Appliance
– 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. -
Page 14: Contact Numbers
8.00am to 5.00pm 9.00am to 12.00pm Please contact our UK Contact Centre number where our friendly operators will book your call with one of our team of nationwide engineers. NOTE: Please refer to our website for our bank holiday opening hours. www.worcester-bosch.co.uk... - Page 15 3. That the householder may be asked equipment purchased and used in to prove the date of installation and mainland Great Britain. This guarantee is given in addition to all your normal statutory rights. Worcester, Bosch Group is a trading name of BBT Thermotechnology UK Ltd.
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Page 16: Guarantee Registration
CORGI Registered by calling CORGI on 01256 372300 www.worcester-bosch.co.uk 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 BBT Thermotechnology UK Limited 6 720 610 414b 10/05...
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