How do I top up pressure on a Vokera Excell 80 SP?

The water comes from the cold water supply, there should be two taps from this supply on the bottom right of the boiler, one for the domestic hot water on a vertical pipe, the other on a horizontal pipe goes to a flexible pipe that goes left (the filling line) and fills the sealed system.
The pilot is probably going out due to suffocation; the fan is meant to run slowly when only the pilot is lit to supply air to the flame. A sticky fan bearing, an open 560 Ohm slow run wirewound resistor, a dry joint on that resistor, a dodgy (intermittent/broken) boiler pump flow sense microswitch, a sticky boiler pump flow microstick actuating rod etc could all cause this problem. Read the manual, or get a Vokera approved man (not any old corgi but someone who knows the model well) to service it. the boiler has a few quirks (flue venturi cleaning , DHW flow diaphrams) that need regular attention, but these are cheap and come as part of a proper service. The microswitches don't seem too reliable. There are mains voltages inside, be careful; failure to reassemble correctly could result in a carbon monoxide leak.

cd
January 2007

there should be a filling loop located near the boiler
but this should not stop you lighting the boiler. turn the boiler of at the power supply and try light the boiler without the fan runing if it lights sounds like the boiler is due a service

s.c
January 2007