pramuz
Jan 18, 2010, 10:06 PM
How a power vent water heater works
pramuz
Jan 18, 2010, 10:07 PM
Diagram of a power vent water heater
hvac1000
Jan 18, 2010, 10:07 PM
Do a Google to answer all your questions since there are many different types with too much info to post here.