Suitable for the following standard efficiency boilers:

Ariston EuroCombi A23/A27

Ariston SX20

Ariston Genus 23/27/30 MFFI

Ariston Microgenus 23/27

Ariston Microgenus II 24/28/31

Ariston MicroCombi 23/27

Ariston DIA 20/24

Ariston DIA 27 RFFI System

Ariston MicroSystem 10/15

Ariston MicroSystem 21/28

Ariston Genus 27 BFFI UK & Plus

Ariston Genus 27 RFFI System

TP Intessa 24/30 MFFI

NEXT EVO X 11/16