installation and servicing icos (V3 Flue System) Your Ideal installation and HE15, HE18, HE24 For users guide see reverse of book When replacing anyInstallation and servicing, Icos • Read online or download PDF • IDEAL INDUSTRIES ICOS HE18 User Manual. Boiler Manuals for the Ideal Icos HE12, HE15, HE18, HE24 range. To view the associated documentation and manuals for your boiler, please select from a Ideal he18 Pdf User Manuals. View online or download Ideal he18 User Manual. User manual for the device IDEAL INDUSTRIES ICOS HE18. Online user manual database. Ideal Icos HE18 Manuals ; Icos HE18 User Guide · Download - 231.63 KB ; Icos HE18 Installation and Servicing Guide · Download - 3.82 MB ; Icos HE18 Parts List. The icos range of boilers are a fully automatically controlled, wall mounted, low water content, balanced flue, fanned, condensing gas boiler. It has full