Worcester Greenstar 4000 User Instructions

User Instructions Gas-fired condensing combi appliance Greenstar 4000 GR4700iW C ...

2 Preface Dedicated to heating comfort. Thank you for purchasing a Worcester product. We pride ourselves on manufacturing appliances to the strictest quality control standards throughout every stage of production. Worcester, Bosch group has led the field in innovative product design and performance for over 50 years. This heritage means all our products are of exceptional quality and proven reliability. Our products employ the latest technologies and they are reliable, extremely energy efficient, offering you economical running costs and value for money. They are amongst the top energy rated appliances ...

3 Greenstar 4000 – 6 720 891 170 (2020/09) Table of contents 1 Explanation of symbols and safety instructions . . . . . . . . . . . 4 1.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 4 2 Product Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 Appliance identification and serial number . . . . . . . . . . 6 2.2 Servicing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3 Maintaining your appliance . . . . . . . . . . . . . . . . . . . . . . . 6 2. ...

Greenstar 4000 – 6 720 891 170 (2020/09) 4 1 Explanation of symbols and safety instructions 1.1 Explanation of symbols Warnings In warnings, signal words at the beginning of a warning are used to indicate the type and seriousness of the ensuing risk if measures for minimizing danger are not taken. The following signal words are defined and can be used in this document: DANGER DANGER indicates that severe or life-threatening personal injury will occur. WARNING WARNING indicates that severe to life-threatening personal injury may occur. CAUTION CAUTION indicates that minor to medium personal injury may occ ...

5 Greenstar 4000 – 6 720 891 170 (2020/09) H Danger to life from carbon monoxide Carbon monoxide (CO) is a poisonous gas, which arises during the incomplete combustion of fossil fuels such as oil, gas or solid fuels. Dangers arise, if carbon monoxide escapes from the heating system due to a fault or a leak and collects unnoticed in enclosed spaces. You can neither see, taste nor smell carbon monoxide. To avoid danger from carbon monoxide: ▶ Have the heating system inspected and serviced regularly by an approved contractor. ▶ Use a CO detector, which gives an alarm in good time if CO escapes. ▶ If y ...

6 2 Product Information 2.1 Appliance identification and serial number Fig. 1 Position of data label The data label [1] contains information of the appliance model and serial number. This is located centrally on the bottom of the appliance in line with the control panel. For your own records Please ensure that the Commissioning Checklist has been completed by your installer or service engineer. Table 2 Appliance details The appliance model and serial number can be found on the appliance data label. 2.2 Servicing Ensure that the service engineer completes the Service Record in the Benchmark ...

7 Greenstar 4000 – 6 720 891 170 (2020/09) 3 Prepare for operation 3.1 Sealed heating system Appliances that can be connected to sealed heating systems are pre- pressurised before operation, this pressure must be maintained for safe use of the appliance. ▶ Check regularly that the pressure is maintained. ▶ Re-charge the system if the pressure indicator reads less than 0.8 bar. ▶ If a permanent significant decrease or increase in pressure is shown on the pressure indicator, contact your installer or maintenance engineer. Pressure indicator ▶ Type of pressure indicator for the system pressure. – Pressure gauge (an analog ...

Greenstar 4000 – 6 720 891 170 (2020/09) 8 3.2 Topping up the system pressure Your installer should have informed you where to find the filling system and instructed you in its use. NOTICE System fill method ▶ You must remove the “filling key” or disconnect the external filling loop after re-pressurisation, to comply with the Water Authority regulations. To aid in filling the system. ▶ Ensure the Central Heating is on. (optional accessory) Automatic filling facility The automatic filling device refills the water into the heating system as required. Your installer programmes the filling device according to your heating sy ...

9 Greenstar 4000 – 6 720 891 170 (2020/09) Fig. 7 Keyed filling link External filling loop Once the external filling loop and pressure menu has been located, follow the instructions for re-pressurising the system. Refer to figure 8. ▶ Unscrew the blanking cap [1]. ▶ Attach the hose [2] to the valve. – Usually one end of the hose is already connected to one of the system fill isolation valves. ▶ Ensure both ends [3] of the hose are screwed on hand tight. ▶ Monitor the pressure menu. – The system fill isolation valves [4] are in a closed position (the handle/screwdriver slot is across the valve). ▶ Turn the handle/sc ...

10 4 Operation These operating instructions describe the operation of the gas-fired condensing boiler. Therefore please also observe the operating instructions for the user interface. 4.1 Control panel overview Fig. 9 Overview [1] Burner display: Illuminates when the burner is alight. [2] Display. [3]  and  buttons: To navigate through menus and increase/ decrease settings. [4] d button: Return/back. [5] ok button: Selection/save settings. [6] Menu button. [7] Hot water button: Hot water mode on/off, adjusting the hot water temperature. [8] Heating button: Heating mode on/off, set the maximum f ...

4.3 Symbols on the display Table 4 Symbols on the display The heating and hot water system has been set up by the installer to its optimum settings. ▶ It is advised to make a note of these settings before adjusting so that you can return to these optimum settings in the future. 4.4 Adjusting the appliance flow temperature 4.4.1 Setting the flow temperature With underfloor heating systems observe the maximum permissible flow temperature. The maximum flow temperature can be adjusted between 30 °C and 82 °C 1). ▶ Press the (key. The set maximum flow temperature appears. ▶ Press the  or  ...

12 Setting preheat mode or eco mode Press the ok key to switch between Eco/Preheat. In Preheat mode, the hot water heat exchanger is kept pre-heated to reduce the time taken to deliver hot water at the tap. Eco mode is an energy saving feature which disables the Preheat function. Eco mode is enabled by default, during the initial appliance start up. 4.6 Setting the heating control device Observe the operating instructions of the heating controller. This shows you: ▶ how to set the room temperature. ▶ how to heat economically and save energy. Heating/DHW via time program (Key control accessories) ...

13 Greenstar 4000 – 6 720 891 170 (2020/09) 5 Key (control accessories) Key LED status The LED on the Key displays different states with flashing or constant colours. Table 7 LED status 5.1 Setting the time program Time program The same method for setting the time program for heating is used to set the time program for hot water. ▶ Press the key. ▶ Select and confirm the Heat. time prog. or DHW time prog.menu. ▶ Select and confirm the Time program menu. The menu items Mon - Fri, Sat - Sun, Mon ... Sun are displayed. Possible items to change: • Mon - Fri to change switching times for all weekdays together • Mon ... ...

Greenstar 4000 – 6 720 891 170 (2020/09) 14 7 Clearances and ventilation information 7.1 Appliance clearances Your installer will have provided adequate space around the appliance for operation, safety and servicing/maintenance access. • The following detail the necessary clearance around the appliance for service and maintenance. CAUTION Risk of damage to appliance or property The appliance will overheat if the clearance space around the appliance is restricted by objects. ▶ Do not restrict this space with the addition of cupboards, shelves etc. next to or around the appliance. ▶ Do not store any combusti ...

15 Greenstar 4000 – 6 720 891 170 (2020/09) Reduced front maintenance minimum clearances The front servicing clearance for this appliance can be reduced to 450mm. For installations with a front servicing clearance less than 600mm (minimum of 450mm), the following additional criteria must be achieved. • The bottom of the appliance case must be between 1000mm and 1500mm from the floor. • There must be at least 450mm clearance in front of the appliance to floor level. Anything sited below the appliance must not protrude into this clear space. • There must be at least 186mm clearance to any structure which is ...

Greenstar 4000 – 6 720 891 170 (2020/09) 16 8 Malfunction or failure If you believe there is a problem with your central heating or hot water supply, before you contact your installer/maintenance engineer and report the error and appliance type carry out the following checks. Basic checks Some items to check before placing a call are: • Is the electrical power switched on to the appliance? • Is the programmer/timer set to ON or in an ON period? • Is the room thermostat set too low? • Is the cylinder thermostat (if fitted) set too low? • Is the cold water main turned on? • Sealed heating system: – Is the static sys ...

17 Greenstar 4000 – 6 720 891 170 (2020/09) ▶ Thaw the frozen pipe. – The pipe can be thawed by applying a hot water bottle, a microwaveable heating pack (the sort used for muscular aches and pains) or a cloth soaked in hot water to the exterior of the pipe, close to the point of blockage. – Hot water, but not boiling, can also be poured onto the pipe from a watering can or similar container. – Care must be taken at pedestrian areas where this water may freeze and create a slip hazard. ▶ Worcester, Bosch Group have available on our website helpful videos in the Customer service section to aid in thawing a frozen pipe. ...

Greenstar 4000 – 6 720 891 170 (2020/09) 18 Fig. 13 Gassing flow chart Is your system pressure constantly increasing even when the boiler is off for extended periods of time? NO NO NO YES YES YES Is your system pressure regularly dropping (i.e. you constantly have to top up your boilers pressure) Can you confirm that the filling link is not stuck open/passing water in any way? Does system pressure increase when the boiler is on? Does the system pressure increase to the high pressure red zone on the pressure gauge? Does the problem persist? Contact a service engineer NO YES Your boiler is fine 0010036321-001 NO Your boiler is fi ...

19 Greenstar 4000 – 6 720 891 170 (2020/09) 9 Environmental protection and disposal Environmental protection is a fundamental corporate strategy of the Bosch Group. The quality of our products, their economy and environmental safety are all of equal importance to us and all environmental protection legislation and regulations are strictly observed. We use the best possible technology and materials for protecting the environment taking account of economic considerations. Packaging Where packaging is concerned, we participate in country-specific recycling processes that ensure optimum recycling. Compostable packagi ...

20 Radiators If a radiator is sited underneath a window, its performance will be affected if the curtains are allowed to drape over the radiator. Shelves fitted above or in front of the radiator should also be avoided. It is advisable to manually adjust all thermostatic radiator valves every 2‒3 months to prevent them sticking. Ensure radiator valves are correctly set and not damaged. Draughts Try to ensure that draughts around doors, windows, letter boxes and keyholes etc. are reduced by using a suitable draught excluder. WARNING Air vents! ▶ Do not block or seal any air vents that are inst ...