Where can I find it?There are no stickers on it... I know it's old, but I would think the model number would be engraved somewhere??
There should be a tag on one of the panels if not google the approx year of your boiler and you may find a model. If no luck, you will have to take off the stove pipe and top cover. Here you should find a brass tag with a number on it (BTU rating) towards the front (burner side) and if still no luck count the sections of the boiler. These are approx 3 inch Vertical boiler sections with a front and back part. Here you can maybe call a plumbing supply and they can look it up. Im just curious, why do you need the model number? Most people don't ask unless you have an issue with the boiler
