Which date information must be included on installation tags?

• A. Month and year only
• B. Day and month only
• C. Year only
• D. Day, month, and year

Answer: (D)

The date information on installation tags must include day, month, and year. This full timestamp pinpoints exactly when the work was completed, which is essential for warranty timing, maintenance intervals, and for inspectors to verify compliance. If only month and year were recorded, multiple installations could share the same month and year, making it impossible to determine the exact age of the system. If only the year were recorded, or if the day and month were provided without the year, you’d lose crucial precision and create ambiguity about when the installation occurred. By including the complete date, there’s a clear, unambiguous record that can be used to schedule inspections, plan service life, and maintain accurate records.