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Posted by jtown on November 16, 2003 at 07:45:55:
In Reply to: Leak in the system? posted by Dan H on November 15, 2003 at 06:36:49:
If the pressure relief valve is piped to a drain, open it up. Empty expansion tank of all water, close drain and add water and pressurize. When heated the water will expand. If you have a glass on the tank you will see that it is fine. If you lose pressure, you have a leak, possibly the water is going up the chimmney. Pressurize and do not fire, watch floor and open boiler if possible to look for water. Check crawl spaces.
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