The Date Code is indicated on a label bearing the heading Date Code (16201 will also appear along the right edge of this label). The 4-digit number imprinted on the label is the date code. The first pair of numbers represents the week of the year of manufacture. The second pair represents the year of manufacture.

 Refer to a separate FAQ outlining the length of oil and gas burner warranties. Refer to you owners manual for complete Wayne Combustion Systems warranty details.