FLUSHING THE RUBBER HOSES ON A VIESSMANN VITODENS GAS BOILER Today we have been called out to Shipley in Bradford to a badly installed Viessmann 100 combi boiler, we are flushing the system, cleaning out the hoses and also giving it a service. Also advising customer to have some upgrades done to the system. Cleaning out the Viessmann rubber hoses or rubber pipes inside the boiler. Gas Plumber flushing a gas combi boiler. Flushed it all out new and we are going to go and check all the central heating system to make sure the radiators are now working. Flushing the heating system
