Do you have a question about the Worcester ZWB 7-25 HE combi and is the answer not in the manual?
Explains the 'Benchmark' initiative for correct boiler installation, commissioning, and servicing.
Actions for gas leaks (turn off gas) and fume detection (switch off appliance, inform engineer).
Guidelines on competent person installation, no flue modification, and recommended maintenance contracts.
Safety regarding combustible materials, health aspects (no asbestos), and combustion air quality.
Details on sealed heating systems, pressure checks, and central heating system venting.
Information on the condensate drain and required clearances around the appliance for servicing.
Guidance on fitting and using room thermostats for central heating control.
Notes on cylinder thermostats, radiator valves, and water flow for combination boilers.
How the appliance functions in central heating mode during a water mains supply failure.
Strategies for scale prevention in hard water areas and appliance ventilation requirements.
Identification of main controls like pressure gauge, master switch, temperature controls, and valves.
Identification of indicator lamps for status and operational buttons like 'Chimney sweep' and 'ECO'.
Instructions for preparing the appliance, including turning on gas and system valves.
Guidance on checking the system pressure gauge and understanding maximum operating pressure limits.
Procedure for switching the appliance on and off using the master switch and observing indicator lamps.
Switching on central heating and controlling it via timers, thermostats, and radiator valves.
Setting hot water temperature on combi models, including the 'ECO' button for mode selection.
Operating in summer mode for hot water only and applying frost protection measures.
Identifying and rectifying fault conditions indicated by the display and fault codes.
Maximising heating efficiency through boiler modulating control and thermostat settings.
Using room thermostats and thermostatic radiator valves effectively for energy savings.
Achieving fuel savings by reducing room temperature, with minimum temperature recommendations.
Tips for energy saving on hot water and instructions for cleaning the appliance's outer case.
Importance of providing appliance details (model, serial number) for customer service assistance.
Details of service centres, contact numbers, and operating hours for regional support and maintenance.
Conditions for free warranty service and when call-out charges apply for faults or breakdowns.
Procedure for contacting the Service Centre for appliance faults or breakdowns and expected response times.
Details of the 24-month guarantee, covering faulty material, workmanship, and exclusions.
Instructions for completing and returning the guarantee card, and recording appliance details.