rsf84e loss of water ?

IN MORNING PREASURE IS ON 0 BAR I TOP IT UP TO 1 BAR ,20 MINUTES LATER IT GOES PAST 3 BAR BURNER DOES NOT GO OUT THEN WATER STARTS COMMING OUT OF RELIEF VALVE.RUNS OK MOST OF DAY ,IN MORNING SAME AGAIN.

MARK
April 2008

I have an RSF84E(T) and it is a sealed system which is topped up from a mains water loop which should normally be closed. If there is water coming from the safety overflow everytime it starts up it must be being replaced from somewhere? Check the mains water loop is closed. I run my system at 1 Bar only.

Allen F.
April 2008