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Need help?Do you have a question about the Worcester GREENSTAR HE combi Series and is the answer not in the manual?
Safety advice for responding to the smell of gas.
Detailed technical specifications for the ZWB 7/11-25 model.
Detailed technical specifications for the ZWB 7/11-30 model.
Legal requirements for gas appliance installation.
Key considerations before starting appliance installation.
Guidance on choosing a suitable location for the appliance.
Procedures for routing and terminating the appliance's condensate pipe.
Instructions for physically fitting the boiler to the wall.
Procedures for verifying all appliance connections are secure.
Information on approved flue systems and installation requirements.
Guidelines for positioning the flue terminal correctly.
Detailed instructions for installing the flue system.
Steps for preparing and assembling the flue duct components.
Instructions for making the main electrical connection to the appliance.
Initial steps and checks required after installation.
Adjusting domestic hot water temperature and flow rate settings.
Procedure for responding to and clearing appliance faults.
Adjustments to physical components like the expansion vessel.
How to adjust the central heating flow temperature.
Configuring settings via the Bosch Heatronic control system.
Adjusting the gas/air ratio for different gas types.
A checklist for pre-service inspection of the appliance.
General guidance on replacing appliance components.
Table listing appliance fault codes and their remedies.
General