Serial Number Locator: Viessmann Vertomat
Floor-standing gas-fired condensing boiler with stainless steel heat exchanger surface.
Location #1 of serial number
The 12-digit serial number can be found on the label and metal rating plate on the boiler's lower front cover.
Location #2 of serial number
The 12-digit serial number can also be found on a rating plate on the boiler's interior metal shell (lower front cover removed).