A model of CWU’s boiler system with the addition of the CONDEX system. Glossary Flue gases: mixture of products of combustion passing through the smokestack. Supply control dampers: automated valves ...

How do I keep spiders out of my gas fireplace? To keep spiders out of your gas fireplace, try a chimney top damper. This device creates a closed seal, making it hard for spiders to get in your ...