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Operating instructions
as combi boilers and gas boilers
with integrated cylinder connection
CGU-2-18/24
CGG-2-18/24
CGU-2K-18/24
CGG-2K-18/24
Wolf GmbH · Postfach 1380 · 84048 Mainburg · Tel. 08751/74-0 · Fax 08751/741600 · Internet: www.wolf-heiztechnik.de
Part no: 3062348_0511
Subject to modifications
GB
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Summary of Contents for Wolf CGU-2-18
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Page 1: Operating Instructions
Operating instructions as combi boilers and gas boilers with integrated cylinder connection CGU-2-18/24 CGG-2-18/24 CGU-2K-18/24 CGG-2K-18/24 Wolf GmbH · Postfach 1380 · 84048 Mainburg · Tel. 08751/74-0 · Fax 08751/741600 · Internet: www.wolf-heiztechnik.de Part no: 3062348_0511 Subject to modifications... -
Page 2: Table Of Contents
Index Index ...................... Page General information ....................2 Safety instructions ...................... 3 Installation information / Maintenance information ..........4-5 Hydraulic connections ....................6 Control unit operation ....................7 Information for energy-efficient operation ............... 8-9 Faults / Fault codes ....................9 Enclosed documents These operating instructions are for the attention of the system user. The installation and maintenance instructions are documents intended for the contractor. General notes Gas is an environmentally-friendly fuel which does not represent any danger unless handled with gross negligence. Your gas fired boiler is a high-quality product which incorporates the latest safety technology. -
Page 3: Safety Instructions
Safety instrucions SAFETY INSTRUCTIONS If you smell gas - Never turn on a light switch. - Never operate electrical switches. - Keep naked flames away. - Close the gas shut-off valve. - Open windows and doors. - Inform your gas supply utility; use a telephone outside the danger area. Caution - risk of poisoning, suffocation and explosion.! If you smell flue gas - Shut the system down. - Open windows and doors. - Notify your local contractor. Caution - risk of poisoning. -
Page 4: Installation Information / Maintenance Information
Installation information / Maintenance information Positioning / modifications - Your gas fired boiler should only be installed and modified by an approved heating contractor, as only they have the essential knowledge to carry out such work. - Gas components must not be modified. - Never close or restrict the ventilation apertures in doors or walls when operating the boiler in the open flue mode; only start the boiler when the flue has been fully installed. -
Page 5: Installation Information / Maintenance Information
Installation information / Maintenance information Care Clean the casing with a damp cloth and a mild cleaning agent (which must not contain chlorine). Then dry immediately afterwards. The gas fired boiler components may only be cleaned by a heating contractor. Maintenance Caution - only the heating contractor has the required knowledge and expertise! - According to the regional regulations, the user is obliged to arrange regular mainte- nance of the system, in order to ensure the reliable and safe function of the gas fired boiler. - Your boiler should be serviced annually. - Maintenance is explicitly detailed in the installation and maintenance instructions. - Isolate the boiler power supply before any maintenance work is carried out. - After completing maintenance, and before the gas fired boiler is restarted, ensure that all components that have been removed for maintenance have been properly refitted. -
Page 6: Hydraulic Connections
Hydraulic connections Please note before commissioning Filling the system The heating system must be completely filled with water. If necessary top up with water. When filling the heating system, the shut-off valves must be open. The system pressure must be 1.5 to 2.5 bar. The connection between the tap water and heating water required for filling must be removed after the fill has been completed. Otherwise there is a risk that your tap water will be contaminated by heating water. The system may overheat if the boiler is operated without water. Note Inhibitors are not permissible. Otherwise there is a risk of damage to the boiler. -
Page 7: Control Unit Operation
Control unit operation Control unit operation ON / OFF switch Reset button Thermometer DHW temperature Pressure selector gauge Illuminated Heating water signal ring temperature selector Illuminated signal ring as status Illuminated signal ring Explanation indicator Standby (power supply ON, burner OFF, Flashing green e.g. summer mode) Constant green light Winter mode: Pump running, burner OFF Flashing yellow Emissions test mode Constant yellow light Burner operates, flame ON Flashing red Fault Summer mode (heating OFF) Winter mode position 2 to 8 Emissions test mode... -
Page 8: Information For Energy-Efficient Operation
Information for energy-efficient operation Heating mode Saving energy with modern heating technology: A Wolf boiler saves you hard cash. With modern condensing technology energy is used efficiently for heating. Use as little electrical energy as possible. Operate the system with the heating pump at the lowest possible level. Regular heating system maintenance pays for itself. A contaminated burner or poorly adjusted gas boiler can reduce the heating system efficiency. Regular heating system maintenance through your local contractor quickly pays for itself. Heating at the lowest energy level Operate your heating system, where possible, with a return temperature of less than 45 °C, to achieve the highest possible energy utilisation. -
Page 9: Information For Energy-Efficient Operation
Information for energy-efficient operation Keep the heat inside the room - at night too At night, closing shutters and drawing curtains noticeably reduces heat loss via the window areas. Insulating the radiator recesses and light coloured paintwork can reduce your heating bills by up to 4%. Airtight joints at windows and doors also help to keep energy inside the room. Minimise energy loss through sensible ventilation Ventilating for hours loses heat stored in walls and objects. As a result, the ambient climate will only become comfortable again after prolonged heating. Short and thorough airing is more effective and pleasant. Venting the radiators Regularly vent the radiators in every room. This safeguards the perfect function of radiators and thermostats, particularly in the upper apartments of apartment blocks. - Page 10 Notes 3062348_0511...
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