Product Information: The pressure gauge provides the user with a visual measurement of the pressure built up within your heating system. keeps dropping is usually due to a leak on your central heating system.
This part is present in 4 different boilers in the Saunier Duval range including the Saunier Duval THEMAPLUS F 23 E , THEMA C 23 , THEMA F 23 E , COMBITEK F 23 E .