All Heatline Boilers are Condensing models
This link shows all 14 of them...
http://www.homeheatingguide.co.uk/efficiency-tables.php
They show two - Sargon 24 (Condensing Combi) and Sargon 24S (Condensing Conventional)
Both manufactured from 2008 onwards - it says.
Peccavi, March 2009