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Worcester Greenstar 24i Junior User Instructions

Wall hung rsf gas fired condensing combination boiler
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See also: Installation, Commissioning & Servicing Instructions , Instructions for Installation and Servicing

USER INSTRUCTIONS

WALL HUNG RSF GAS FIRED CONDENSING COMBINATION BOILER
GREENSTAR 24i Junior/28i Junior
FOR SEALED CENTRAL HEATING SYSTEMS AND MAINS FED DOMESTIC HOT WATER
The appliance is for use with Natural Gas or
L.P.G. (Cat II 2H3P type C13, C33 & C53)
Natural Gas
Liquid Petroleum Gas
UK/IE
Model
GC Number
24i Junior
47-406-54
28i Junior
47-406-56
24i Junior
47-406-55
28i Junior
47-406-57

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Summary of Contents for Worcester Greenstar 24i Junior

  • Page 1: User Instructions

    USER INSTRUCTIONS WALL HUNG RSF GAS FIRED CONDENSING COMBINATION BOILER GREENSTAR 24i Junior/28i Junior FOR SEALED CENTRAL HEATING SYSTEMS AND MAINS FED DOMESTIC HOT WATER The appliance is for use with Natural Gas or L.P.G. (Cat II 2H3P type C13, C33 & C53)
  • Page 2 89.1%, It is therefore amongst the top energy rated boilers available. There is also the reassurance of our no-nonsense 2 years parts and labour guarantee - backed up by Worcester Total Cover, an optional complete maintenance scheme to keep your boiler operating at peak condition and efficiency.

  • Page 3: Table Of Contents

    CONTENTS CONTENTS Symbols and safety precautions ..4 10 Your Guarantee ..... . . 18 Explanation of symbols .

  • Page 4: Symbols And Safety Precautions

    (second level) warranty. Table 1 Symbols ▶ Do not modify the boiler or flue system in any way. Worcester, Bosch Group accepts no liability arising from any such actions. This does not affect your statutory rights. 6 720 802 048 (2013/05)

  • Page 5: General Information

    Installation, Commissioning and Servicing Instructions. ▶ The boiler must be serviced regularly by a competent, qualified person, such as a Worcester service engineer or other Gas Safe registered engineer. ▶ Always use original spares, to help maintain the economy, safety and reliability of the boiler and have the Service Record completed in the Benchmark Checklist.

  • Page 6: Controls

    CONTROLS CONTROLS ▶ To gain access to the boiler controls push the top centre of the flap and release. Fig. 1 Control panel fascia Central heating temperature control ECO button Burner indicator (Green) Reset button Boiler Controls Service button Hot water temperature control Cover or optional Programmer System pressure gauge Power ON and fault indicator (Blue)

  • Page 7: Operating The Boiler

    CONTROLS 3.1 OPERATING THE BOILER 3.1.1 SETTING THE CENTRAL HEATING TEMPERATURE 1. Turn the central heating temperature control knob to the desired level. Temperatures given in the figure below are approximate. 2. The Burner indicator (green) will illuminate to show that the boiler is running. 40 °C 47 °C 53 °C...

  • Page 8: Setting The Hot Water Temperature

    CONTROLS 3.1.4 SETTING THE HOT WATER TEMPERATURE 1. Turn the hot water temperature control knob to the desired level. reset Fig. 4 Hot water temperature 3.1.5 DOMESTIC HOT WATER PRE-HEAT The hot water heat exchanger is kept “pre-heated” to reduce the time taken to deliver hot water at the tap. Pre-heat is enabled by default, during the initial boiler start up and the ECO button is not illuminated.

  • Page 9: Boiler Reset

    2. The mains indicator will no longer be flashing. reset Fig. 6 Reset button and mains light If the fault remains and cannot be cleared by pressing the reset button, contact Worcester, Bosch Group for assistance. 6 720 802 048 (2013/05)

  • Page 10: System Pressure

    SYSTEM PRESSURE SYSTEM PRESSURE 4.1 SEALED HEATING SYSTEMS This boiler is fitted to a sealed heating system which is pre-pressurised. Your installer will advise you of the minimum and maximum pressure indicated on the pressure gauge. ▶ Check regularly that the pressure is maintained. ▶...

  • Page 11: Optional Integral Keyless Filling Link

    SYSTEM PRESSURE 4.3 OPTIONAL INTEGRAL KEYLESS FILLING LINK Locate filling link and follow instructions for re-pressurising. 1. If the needle on the appliance pressure gauge reads less than 1 bar, re-charge the system. 2. Pull the blue lever down to start the filling process. 3.

  • Page 12: Optional Integral Keyed Filling Link

    SYSTEM PRESSURE 4.4 OPTIONAL INTEGRAL KEYED FILLING LINK Locate filling key and follow instructions for re-pressurising. 1. Push the filling key firmly into the body of the filling link, ensuring the arrow on the key shaft lines up with the open padlock symbol.

  • Page 13: External Filling Loop

    SYSTEM PRESSURE 4.5 EXTERNAL FILLING LOOP Once the external filling loop has been located, follow the instructions for re-pressurising the system. 1. Unscrew blanking cap. 2. Attach the hose to the valves, screw on hand-tight. 3. Turn the handle/screwdriver slot through 90° to open the valves. 4.

  • Page 14: Service Clearances

    2 year guarantee period. If you would like to know more about a Worcester, Bosch Group service contract, please tick the appropriate box on your warranty registration card.

  • Page 15: Fault Finding

    ▶ Once the pipe has been thawed the boiler must be reset, press the reset button for five seconds and wait two to three minutes for the boiler to restart. ▶ If the boiler does not restart, contact Worcester’s Technical Support Team (0844 892 3366) for assistance. ▶ Contact your installer in order to find a permanent solution to the problem.

  • Page 16: Fault Or Breakdown

    In the case of a suspected fault, refer to the fault finding section of this guide. In the event of a boiler fault or breakdown please contact Worcester, Bosch Group appointments team on 0844 892 3000. Your advisor will arrange for an engineer to call with the minimum of delay; under normal circumstances this will be from 1 - 3 working days (excluding weekends) for priority breakdown situations (no hot water and/or heating).

  • Page 17: Tips On Energy Saving

    TIPS ON ENERGY SAVING TIPS ON ENERGY SAVING HEATING ECONOMICALLY The boiler provides a high level of comfort whilst keeping gas consumption and the environment effects as low as possible. The gas supply to the burner is controlled according to the level of demand for heat. The boiler operates with a low flame if the demand for heat reduces.

  • Page 18: Your Guarantee

    YOUR GUARANTEE 10 YOUR GUARANTEE This boiler is guaranteed against faulty materials or workmanship for a period of 2 years from the date of installation subject to the following terms and conditions. • During the period of this guarantee any components of the boiler which are proven to be faulty or defective in manufacture will be exchanged or repaired free of charge by Bosch Thermotechnology Ltd.

  • Page 19: Glossary

    GLOSSARY 12 GLOSSARY Central heating systems All radiators must be heated at an even rate. If the top of a radiator is at a lower temperature than the bottom then it should be vented by releasing air through the venting screw at the top of the radiator. Ask your installer to show you how this is done. This boiler is fitted to a sealed system.
  • Page 20 0844 892 9800 TRAINING: 01905 752526 SALES: 01905 752640 Worcester, Bosch Group Cotswold Way, Warndon, Worcester WR4 9SW. Tel. 0844 892 9900 Worcester, Bosch Group is a brand name of Bosch Thermotechnology Ltd. worcester-bosch.co.uk Document No. 6 720 802 048 (2013/05)

This manual is also suitable for:

Greenstar 28i junior

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