ACTULLY IF IT IS YOUR OWN APPLIANCE YOU ARE LEGALLY QUITE ENTITLED TO WORK ON IT HOWEVER IT IS TRUE THAT MOST PEOPLE WOULD ADVISE AGAINST IT
HOWEVER i CAN NOT SEE THAT YOU MEAN REPREASURISE BURNER OPERATION PRERSURE MAYBE REPRESURISE SYSTEM PRESURE OR REPREASURISE EXPANSION VESSEL
BURNED PRESURES CAN BE ADJUSTED ON HIGH AND LOW FLAME POSITION ON THIS MODEL HOWEVER YOU WOULD NOT NEED TO DO THIS UNLESS REPLACING OPERATING PCB
TONY TSP HEATING
June 2007