Posted by Tony Conner on October 23, 2001 at 13:28:33:
In Reply to: How do i stop loosing my pass tubes??? posted by Beezil on October 23, 2001 at 09:58:20:
Is the boiler shut down for the summer with the water left in it? If so, the upper layer of water will slowly absorb oxygen from the air, and this will pit the boiler at the water line.
The easiest thing to do is lay the boiler up dry. If there's some reason you don't want to do that, you need to keep extra suphite in the boiler (and you need to check the residual chemical level regularly), and/or fire it up just enough to make the water boil a few times a week. This will drive off any dissolved oxygen. If it was my boiler, I'd drain it, flush it out, and leave the manhole and handhole covers off between heating seasons.
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