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24CDi, 28CDi & 35CDi II
COMBI
Worcester supports the
Benchmark code of practice
G.C. NUMBERS
APPLIANCE NATURAL GAS L.P.G.
24CDi Fanned Flued (RSF) 47 311 30 47 311 31
24CDi Balanced Flued (BF) 47 311 29
24CDi Open Flued (OF) 47 311 32 47 311 33
28CDi Fanned Flue (RSF) 47 311 34 47 311 35
35CDi II Fanned Flue (RSF) 47 311 58 47 311 59
USER INSTRUCTIONS &
CUSTOMER CARE GUIDE
Vote for your
‘Installer of the year’ at
www.worcester-bosch.co.uk
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EXCELLENCE COMES AS STANDARD Thank you for purchasing a Worcester CDi gas-fired combi- nation appliance. The CDi 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 field in innovative appli- ance design and perform- ance for more than 40 years. The result is that your new Worcester CDi appliance offers you the very best of every- thing - quality, efficiency, econom
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GENERAL INFORMATION GAS SAFETY (INSTALLATION AND USE) REGULATIONS 1998 It is the law, in GB, 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 manufacturer’s notes must not be taken, in any way, as over-riding statutory obligations. In GB, a competent person is someone registered with CORGI. All
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Hot Water Mode: The appliance operates to supply only domestic hot water when the heating temperature mode is fully anti-clockwise, at the – posi- tion or the timer is programmed to OFF mode. A flow restrictor is fitted within the appliance which limits a hot water delivery rate to a maximum of: 24CDi 9.0 (±15%) litres/minute 28CDi 10.0 (±15%) litres/minute 35CDi II 12.0 (±15%) litres/minute Hot Water and Central Heating mode: When a demand is made for heating by the system con- trols (i.e. a pr
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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
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CLEARANCES 24,28CDi RSF 35CDi II 24CDi OF 24CDiBF Left-hand side 10 10 10 10 Right-hand side 10 10 10 10 In Front 600 600 600 600 Above 180 180 300 100 Below 200 200 200 200 Minimum clearances in millimetres. Your installer will have provided adequate space around the appliance for safety and servicing. Do not restrict this space by the addition of cupboards, shelves etc. close to the appliance. ROOM THERMOSTAT A room thermostat may be fitted for control of
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The water hardness may be determined using the standard test paper or by reference to the local Water Company. Further information may be obtained from Worcester Bosch Technical Helpline. AIR SUPPLY FOR OPEN FLUED (O.F.) APPLIANCES Your installer will have made arrangements for an adequate sup- ply of fresh air to the appliance. Fresh air is required for combustion. Do not block up any air ways which may be let into a wall or door. Do not hang clothes or other combustible materials over the appl
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OPERATION OF CONTROLS OPERATING SWITCH In the ‘’ position there is no mains electricity to the appliance. In the ‘I’ position mains electricity is connected to the appliance. 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 towards the ‘’ (Summer Position), then the appliance will operate in the HOT WATER mode only a
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INDICATOR LIGHTS Mains electricity indicator: OFF : No mains electricity to the appliance ON : Mains electricity is connected to the appliance Central heating demand indicator: OFF : No demand for heat to the central heating circuit ON : Central heating demand FLASHING SLOW : Ignition lockout (once per second) FLASHING FAST : Appliance fault (other than ignition (five times per second) lockout) Domestic hot water demand indicator: OFF : No demand for domestic hot water ON : Domestic hot water
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TO LIGHT AND STOP THE APPLIANCE TO LIGHT THE APPLIANCE Check that the water valves to the central heating circuit are open. On sealed systems check that the grey needle on the pressure gauge is not below the required pressure. Switch on the mains electricity. The green power on indicator will light. Set the room thermostat, if fitted, to maximum. Turn the central heating temperature control knob to ‘MAX’. The red central heating demand indicator will light. The burner will light and the red flam
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The appliance can be reset by pressing the reset button and holding in for 5 seconds. IGNITION LOCKOUT The appliance will enter a lockout condition in the event of the burner failing to ignite. If the burner fails to light within a preset time of 10 seconds the electricity supply to the gas valve will be interrupted. If ignition lockout has occurred, the central heating demand indicator will flash slowly (approximately once per second). The appliance can be reset by pressing the reset button and
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APPLIANCE FAILS TO OPERATE A diagnostic system is provided which gives a flashing light dis- play on the facia panel. Press the reset button to attempt to restart the appliance. If the appliance does not return to normal operation then contact your installer or Worcester Bosch. More than 30% of all calls made to our contact centre reporting 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 m
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MAINTAINING YOUR APPLIANCE Your new Worcester CDi gas-fired appliance 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 difficu
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SERVICE CENTRES CONTACT NUMBERS: UK Contact Centre Tel. 08457 256 206 UK Contact Centre Fax. 01905 757536 Scotland only Fax. 01506 441 687 Eire Tel: 01 494 0099 OPERATING HOURS: Mon - Fri 7.00am to 8.00pm Sat 8.00am to 5.00pm Sun 9.00am to 12.00pm Please contact our UK Contact Centre number where our friendly oper- ators 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 14
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YOUR WORCESTER CDi COMBI GUARANTEE This appliance is guaranteed from the date of installation subject to the following conditions & exceptions. 1. The appliance is guaranteed for a that the appliance was correctly period of 24 calendar months sub- commissioned. This information ject to the return of the guarantee must then be documented in the card within 30 days of installation Benchmark Gas Boiler and the first 12 months service and Commissioning Checklist. inspection having been carried out
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GUARANTEE REGISTRATION 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 CDi appliance and, while this will not affect your statutory rights in any way, it will assist us to maintain an effec- tive 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
