I'm using Sharepoint Designer 2010, I have created site worklow from the designer.
- How can I operate this workflow if site workflow do not associate to a list?
- How can I convert a site workflow to a list workflow?
From Improvements in SharePoint 2010 by Paul Andrew:
You can get to the activated site workflows by choosing Site Workflows from the Site Actions menu in SharePoint. It shows you new workflows you can start, any running site workflows and completed workflows. Since site workflows don’t have a list item or document to start from, they must be started manually through the SharePoint user interface or via the SharePoint API.
I don't think it is possible to change site workflow to list workflow (maybe some workaround exist). To have more flexibility you can design Reusable workflows as described in Options for Deploying Reusable Workflows in SharePoint 2010 by Geoff Varosky.
Site Workflows are started through the SharePoint web UI by going to View All Site Contents and then click on the Site Workflows.
Here is what you need to do if you are looking to start the site workflow programmatically.