This part fits
Baxi HE PLUS ISS 02 100/2
Baxi HE PLUS 50/2
Baxi HE PLUS 80/2
Baxi SOLO HE 18
Baxi SOLO HE 24
Baxi SOLO HE 30
Main COMBI 24
Potterton PROMAX HE 15
Potterton PROMAX HE PLUS 41320
Potterton PROMAX HE 24
Potterton PROMAX HE PLUS 41329
Potterton PROMAX FSB 30
Potterton PROMAX HE PLUS 30
Potterton PROMAX HE SYSTEM