The old foreman swore by a 3/8-inch gap for boiler tube expansion, but the new spec sheet says 1/4-inch is fine.

We followed the spec on a job in Cincinnati and now I'm hearing a faint ticking on cool-down cycles. Anyone else run into this and have a fix, or is the old way just better?

3 comments

3 Comments

seth_harris3629d ago

@jamiew53 splitting the gap is just guessing until we know what the real issue was.

jamiew531mo ago

Heard that same ticking on a retrofit last year. We split the difference and went with 5/16 inch on the next one, ticking stopped. The old guy was leaving room for the really bad scale buildup they used to get.

abbyg601mo ago

Was the ticking even that big a deal?