Weil-McLain gas fired boiler serial #CP624682.
The Weil-McLain serial number look up site is at:
http://www.weil-mclain.com/en/resources/professional/tools/cp-lookup.aspx
but in this case, unfortunately, refers you to “Please contact your Sales Representative for information on this CP number” :roll:
Call (or email) Weil McLain and they will tell you the date of manufacture. Phone: 219-879-6561 ask for Technical Services.
Have the boiler CP number handy.