Gledhill High Efficiency Condensing Boiler - Gledhill Spare Parts

REPLACEMENT OF PARTS9.1. GeneralA competent person must carry out replacement of parts. Before replacing anyparts the boiler must be isolated from the mains electric supply and the gasmust be turned off at the service valve on the boiler. Unless stated otherwiseparts are replaced in the reverse order of removal. After replacing any partsalways test for gas soundness and if necessary carry out a functional test ofthe controls. For replacement of parts the front cover, inner casingpanel and lower casing panel will need to be removed.The front cover is held with locating pins at the top andretaining screws at the bottom. The retaining screwsshould be removed from the bottom and the panellifted clear of the locating pins. To remove the innercasing undo the four retaining screws holding theinner casing panel and the lower casing panel is heldby a further three screws.NOTE: The gas valve and Venturi are a single assemblywhich is factory set and sealed. This must not betampered with and must be changed as a singleassembly.Burner9.1.1The burner, fan, gas valve and venturi form part of a sub-assembly that mustbe removed before one of them can be replaced. To remove the sub-assemblyremove the electrical plugs from the fan and gas valve and remove the earthconnections from the gas valve and fan. Remove the gas connection, then thesix nuts securing the combustion chamber front cover with a 10mm AF spanner.Carefully withdraw the sub-assembly from the combustion chamber.Note: The burner will require a new gasket when refitted.VenturiGas valvePage 33Burner sub assemblyCONDENSING BOILER