What must be done prior to installing an appliance that requires a variance?

Prior to installing an appliance that requires a variance, it is essential to apply for and obtain acceptance from the Technical Standards and Safety Authority (TSSA). A variance is a special permission that allows a deviation from the standard code or regulation, typically issued when compliance with the standard is not feasible due to unique conditions or circumstances related to the installation. Without this approval, the installation may not meet safety regulations and could result in penalties or unsafe conditions.

In this context, the approval from TSSA ensures that the installation meets all necessary safety standards despite the variance. Other options do not address the critical need for formal approval from a regulatory body prior to proceeding with installations that deviate from established codes, which is a prerequisite to ensure safety and compliance.