You will find the serial number either on your paperwork from your purchase, or on the holiday
home itself.
It will be in one of these formats: WT1234/001, WB1234/001, B1234/001,
PR1234/001, 1234/001, BK12334/001.
Your serial number can be found in the boiler cupboard, under the side exterior door or
on the rear external panel of your holiday home.
The diagram below should help you locate this information: