You link is requesting to download a viewer, personally I won't download this.
Could you post the model and reference number of the boiler and maybe somebody could find a site that has the documentation that is more easily accessible.
Dell XPS 13 9370 (2018) review
No need to scan sketches into your computer with Moleskine's new smart pen
WWDC history: Apple's product launches since 2005
Comment importer des contacts d’un iPhone à un autre iPhone ?