Assertion: furnace's combustion chamber | /r/HasProperty | open
Facets:
value: to the caz
type: LOCATION
Source sentences:
text: Because Category I furnaces have an open combustion chamber (the burners are visible in the photo), the big blower fan can easily overcome the small induced-draft fan and back draft the furnace pulling carbon monoxide into the open return on the furnace and distributing it throughout the house via the supply ducts.
text: The combustion chamber is also open to the CAZ; i.e., if you are standing next to the furnace, you can peer in and see the burner and the flames.