Hi,

If an AHU (initially outside of the scope of work) had to be modified in order to comply with the ventilation requirements of Standard 62.1-2007, does it have to comply with the requirements of Standard 90.1-2007, Section 6?

In that case, would it have to comply with all of the points in Section 6, or only with those related to the components of the system that were modified?

Thanks for your help!