Posted by Harold Kestenholz - Hydronic Network on May 30, 2001 at 10:25:34:
In Reply to: Weil-McClain Condensate posted by Wayne Meier on May 30, 2001 at 07:39:12:
The GV boiler has a thermostat to recirculate boiler water until the boiler rises to temperature to prevent condensation in the boiler on cold start. The thermostat may have failed permitting the combustion gases to drop below dew point for a longer 'wet time.' Replacing the thermostat may do the trick.
Deoxygenated and non-corrosive water extends the life of ferrous metals such as steel and cast-iron. Try to keep the good water as long as possible, testing a small sample each year. Flushing the system with fresh water will increase corrosion. When you have the thermostat replaced, air will be purged from the system with its oxygen. There is an air purging procedure at
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