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WORCESTER BOSCH GREENSTAR 12i & 24i  SYSTEM
8 716 115 171a (06/2008)

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TIPS ON ENERGY SAVING

DRAUGHTS

Try to ensure that draughts around doors, windows, letterboxes and keyholes etc. are
reduced by using a suitable draught excluder. Warning - Do not block or seal any air
vents that are installed to ensure the central heating boiler operates safely.

ROOM THERMOSTATS

Reducing the setting of the room thermostat by 1°C can reduce fuel consumption by up
to 10%.

NEW CONTROL SYSTEMS

Upgrade your heating control system if necessary with the latest equipment available.
The minimum level of control is a programmer, interlocking room thermostat and
thermostatic radiator valves.

RADIATORS

More often than not radiators will be sited underneath a window, so the warm air from
the radiator heats the colder incoming air from the window. The performance of the
radiator will be affected if the curtains are allowed to drape over the radiator or shelves
are fitted above it. The positioning of furniture and tables in front of the radiator should
also be avoided.

It is advisable to manually adjust all radiator thermostatic valves every 2-3 months to
prevent them sticking. It is also important that the plastic tops of all valves are always in
position and not cracked or damaged to prevent accidents. Care should be taken when
vacuum cleaning carpets to avoid damage to valves and pipework.

The heating system and the outputs of the radiators have been carefully selected by
your installer. The temperature obtainable in any given room is dependent on all
radiators being operated at the same time. If you decide to turn off radiators in unused
rooms, spare bedrooms etc., you may experience slightly lower room temperatures in
rooms adjacent to unheated rooms.

TIPS ON ENERGY SAVING

Summary of Contents for WORCESTER benchmark Greenstar 12i

Page 1: ...EMS INDIRECT FED DOMESTIC HOT WATER USER INSTRUCTIONS CUSTOMER CARE GUIDE THIS BOILER IS USED WITH NATURAL GAS OR LPG Cat II 2H3P TYPE C13 C33 C53 NATURAL GAS 12i System GC NUMBER 41 311 67 24i System GC NUMBER 41 311 68 LIQUID PETROLEUM GAS 12i System GC NUMBER 41 311 69 24i System GC NUMBER 41 311 70 ...

Page 2: ...CEPT FOR ANY STATUTORY OBLIGATION IF YOU ARE IN ANY DOUBT CONTACT THE WORCESTER BOSCH TECHNICAL SUPPORT DISTANCE LEARNING AND TRAINING COURSES ARE AVAILABLE FROM WORCESTER BOSCH GROUP THIS BOILER MUST BE INSTALLED BY A CORGI REGISTERED COMPETENT PERSON FAILURE TO INSTALL CORRECTLY COULD LEAD TO PROSECUTION PLEASE LEAVE THIS GUIDE THE INSTALLATION INSTRUCTIONS AND THE COMPLETED BENCHMARK LOG BOOK W...

Page 3: ...r manufactured by Worcester Bosch Group The company prides itself on manufacturing boilers to the strictest quality control standards throughout every stage of production Worcester Bosch Group has led the field in innovative boiler design and performance for more than 40 years This heritage means all products are of exceptional quality and proven reliability The Greenstar range in particular is ex...

Page 4: ...f the boiler Chemically aggressive substances can corrode the boiler and invalidate any warranty FITTING MODIFICATIONS Fitting the boiler any controls to the boiler and removal of the outer casing may only be carried out by a competent engineer in accordance with the Gas Safety Installation and Use Regulations Flue systems must not be modified in any way other than as described in the Installation...

Page 5: ...rk and may be required by the local Building Control Inspector NOTE The Benchmark checklist and service interval record can be found at the rear of the Installation Commissioning and Servicing Instructions BENCHMARK STANDARD Benchmark is a code of practice for correctly installing commissioning and servicing of domestic water heating boilers A Benchmark Checklist is provided by the manufacturer fo...

Page 6: ...ontacted to inspect the installation and rectify any fault Only additives that are compatible with aluminium may be used in the system Any incompatible additive used will invalidate the guarantee CONDENSATE DRAIN This is a condensing boiler and the terminal will at times give out a plume of water vapour This is quite normal The boiler also produces quantities of condensate which is discharged regu...

Page 7: ...e around the boiler VENTILATION This is a room sealed boiler and does not require any air for combustion from inside the property If the boiler is fitted into a cupboard or a compartment is built around the boiler after installation then the compartment must be separated from the boiler space by a perforated non combustible partition as described in BS 6798 Notwithstanding the requirements of BS 6...

Page 8: ...h at the top of the flap and release 1 MAIN POWER ON OFF BUTTON 2 TEMPERATURE CONTROL KNOB 3 MAINS ON OFF INDICATOR FAULT DIAGNOSTIC LIGHT 4 BURNER ON INDICATOR LIGHT GREEN 5 NOT APPLICABLE ON SYSTEM BOILERS 6 FAULT RESET BUTTON 7 SYSTEM PRESSURE GAUGE 8 POSITION FOR OPTIONAL PROGRAMMER USING YOUR BOILER 1 2 4 6 8 7 5 3 PUSH ...

Page 9: ...te When the burner is lit the green indicator light underneath the on off button is illuminated CONTROLLING CENTRAL HEATING Set the timer to the correct time Set room thermostat to the desired room temperature Set the thermostatic radiator valves to the desired settings FROST PROTECTION Leave master switch on Turn the temperature control to If the temperature falls to below 5 C within the boiler i...

Page 10: ... The reset button will no longer be illuminated and the mains indicator will stop flashing The boiler will function normally dependent on programmer and room thermostat settings If the electrical power to the boiler has been interrupted a reset fault condition will exist Reset the boiler as described above If the fault remains and cannot be cleared by pressing the reset button or if fault remains ...

Page 11: ...ing and maintenance checks from a competent person beyond the initial 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 If your Greenstar gas fired boiler should fail to operate correctly or requires servicing please contact the Worcester Bosch Group Service Department see inside ...

Page 12: ...perature too low Radiators are too hot Programmer is incorrectly set Momentary power failure Programmer setting Cylinder thermostat set too low Adjust cylinder thermostat Hot water temperature too high Cylinder thermostat set too high Increase thermostatic radiator valve setting s room thermostat Increase CH flow temperature control setting Bleed radiators and recharge heating system Turn down the...

Page 13: ...ice Engineer finds no fault with the boiler see Note OR The cause of breakdown is misuse or with other parts of your plumbing heating system or with equipment not supplied by Worcester Bosch Group NOTE NO BOILER FAULT IS FOUND ON OVER 30 OF SERVICE CALL OUTS Please read this guide carefully to gain a good understanding of the operation of your boiler In the case of a suspected fault refer to the f...

Page 14: ...ly switches on and off CENTRAL HEATING SYSTEMS WITH ROOM THERMOSTATS THERMOSTATIC RADIATOR VALVES The temperature control on the boiler should be set to the maximum rated temperature of the central heating system The temperature of each room can be set individually except primary room with the room thermostat using the thermostatic radiator valves ROOF INSULATION Around 30 of the heat loss from a ...

Page 15: ... heats the colder incoming air from the window The performance of the radiator will be affected if the curtains are allowed to drape over the radiator or shelves are fitted above it The positioning of furniture and tables in front of the radiator should also be avoided It is advisable to manually adjust all radiator thermostatic valves every 2 3 months to prevent them sticking It is also important...

Page 16: ...appropriate the first year s service inspection has been carried out to the satisfaction of Bosch Thermotechnology Ltd when requested These should be part of the Benchmark Checklist Any product or part returned for servicing under the guarantee must be accompanied by a claim stating the model serial number date of installation Bosch Thermotechnology Ltd will not accept responsibility for damage ca...

Page 17: ...ystem boiler and will assist us in maintaining an effective and efficient customer service by establishing a reference and permanent record for your boiler This does not affect your statutory rights For your own record Please ensure that the Benchmark Checklist has been completed by your installer or service engineer GUARANTEE REGISTRATION Model Serial No See identity label inside boiler casing Ty...

Page 18: ...WORCESTER BOSCH GREENSTAR 12i 24i SYSTEM 8 716 115 171a 06 2008 NOTES ...

Page 19: ...NOTES WORCESTER BOSCH GREENSTAR 12i 24i SYSTEM 8 716 115 171a 06 2008 ...

Page 20: ...Dedicated to heating comfort Worcester Bosch Group Cotswold Way Warndon Worcester WR4 9SW Tel 01905 754624 Fax 01905 754619 www worcester bosch co uk Worcester Bosch Group is a brand name of Bosch Thermotechnology Ltd 8 716 115 171a 06 2008 ...

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