I agree with Yodon, but would expand a little bit. There is probably a definition of "installation" in ISO9002:1994 but I don't have a copy of that. There is no definition of "installation" in the US FDA regulations that I can find and 13485 points to 9000.
You might, in your own SOPs, differentiate between "installation" and "unpacking". If your company provides delivery and unpacking services, but the unpacking does not involve any performance testing or calibration, I'd say that is not installation. But if the delivery and unpacking includes any calibration, adjustment, connection to AC mains, or anything that might affect the performance and safety of the device, then consider that installation and keep records. By having this in your own SOP, you at least demonstrate that you've considered it, even if an auditor doesn't agree with your conclusion.