Revision History

This page provides a summary of revisions made, listing the month and year of each update along with a brief description of the changes made.

Month & Year	Description
October, 2026	Added information related to the application of the NTEP label in Apply NTEP Label chapter.
May, 2026	Updated IMPORTANT SAFETY INSTRUCTIONS section to revise the warning regarding installation and servicing by a certified technician and to add warranty implication.
September, 2025	Combined standalone FRUs and created the CT4000 Service Guide