The phrase "addition to the installation" is correct and usable in written English.
It can be used when referring to something that is being added or included as part of an installation process or setup.
Example: "In addition to the installation, we will also provide training for all users."
Alternatives: "supplement to the installation" or "enhancement to the installation".
In addition to the installation and equipment charge, there is also a monthly service charge.
In addition to the installation in Aden, American ships also regularly stop at a port outside Djibouti, officials said.
The campaign includes, in addition to the installation, television commercials, print ads, posters, bus wraps, apps and a presence in social media and store windows.
In the CR scenario, in addition to the installation of anaerobic digestion plants to produce biogas, it was considered that the biological treatment process of the MBT plants consists also anaerobic treatment.
Ultimately, your likelihood of recouping the money you spent on maintenance, in addition to the installation costs, is pretty low.
In addition to the installation of anti-tank and other passive obstacles, fourteen coastal batteries, each of two guns, were constructed.
In addition to the installations, there will be events surrounding the artwork.
In addition to the installations, the 1982 bridge will feature an exhibit of vintage concert fliers and a stage where people can hear punk and New Wave bands, see an original ballet inspired by punk musician Nina Hagen and perform 1980s songs with a karaoke machine.
In addition to the main installation, 10 close-up photographs appliqued to wood appear on the ground floor of the theater.
In addition to the light installations there will be the artist's "Mapping Spaces" portfolio and other work related to his "Roden Crater" project.
In addition to the two installations of Horn's work - a rubber floor scattered with childishly rendered words in Icelandic and English, and the glacial water housed in its top-lit, floor-to-ceiling columns - the space will be used by the local community for activities ranging from yoga classes and AA meetings to gatherings of the local (women-only) chess association and reading groups.
