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Need help?Do you have a question about the Worcester ZWB 7-30 HE combi and is the answer not in the manual?
Details the Benchmark initiative for correct installation and servicing.
Steps to take if you smell gas or fumes from the appliance.
Requirements for fitting, modifications, and recommended maintenance.
Precautions on combustible materials, health safety, and combustion air.
Information on sealed heating systems, pressure, and radiator venting.
Explanation of condensate discharge and required installation clearances.
Details on connecting and using room thermostats for heating control.
Information on thermostats, radiator valves, and water flow characteristics.
How the appliance operates during a water mains supply failure.
Advice for hard water areas and ventilation requirements.
Note on pump settings not requiring manual adjustment.
Identification and function of main controls, gauges, and indicators.
Identification of service valves, gas isolation, and water inlet connections.
Step-by-step instructions for turning on gas and water valves.
How to check and maintain the correct central heating system pressure.
Procedure for turning the appliance on and indicator status.
Procedure for turning the appliance off and timer behaviour.
How to set the central heating temperature control.
Steps for setting timers, room thermostats, and radiator valves.
How to adjust the hot water temperature for combi boilers.
Explanation of ECO mode, Comfort mode, and Economy mode.
How ECO mode with demand detection and button lit functions.
Procedures for Summer Mode and Frost Protection for combi appliances.
Procedure for resetting the appliance when an indicator flashes.
Steps to take when an indicator does not flash or fault persists.
Advice on efficient boiler operation and modulating control.
Recommendations for room thermostats and radiator valves for savings.
How reducing room temperature can lead to fuel savings.
Tips on hot water temperature settings and outer case cleaning.
Importance of appliance details and the Benchmark log-book for service.
Contact details and operating hours for regional service centres.
Conditions for free parts/labour and when call-out charges apply.
How to contact the technical helpline and service centre for faults.
Details of the 24-month guarantee, conditions, and exclusions.
Instructions for completing and returning the Guarantee Registration Card.
Reminder to ensure the Benchmark log-book is completed by the installer.
Quick guide to switching the appliance on/off and controlling central heating.
Quick reference for hot water temperature and ECO button modes.
Quick instruction on how to reset the appliance during a fault condition.
General