Sorry I don't remember any more hints. I explored a little bit today and found the healer but I didn't find the flaming equipment.

The secret to Dun Candrae is that the rooms are layered. I don't know the technical terms, but leaving "breadcrumbs" i.e. a piece of gold on the floor as you go can give you hints to where different paths are layered. I only remember there being a hidden healer in a room that can be found by ...