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The difference is that a power vent water heater pulls in combustion air from the space around the appliance, then uses a fan to propel the exhaust through the vent. A direct vent system pulls in ...
Standard water heaters—the most common type—often use a method known as atmospheric venting. The vent consists of a vertical or upward-sloping vent duct that typically ties into a common vent. The system works solely through natural convection—based on the principle that hot air rises. Hot exhaust from the water heater naturally rises up ...
3. Direct vent water heater. A direct vent gas hot water heater draws air from outside your home and expels the combustion gases back outside through a sealed pipe. This is ideal for homes with limited ventilation inside the living space. Advantages: Sealed system prevents air from inside the home from being used for combustion.
1. Overheating: Improper venting can cause a water heater to become overheated to the point that it is damaged beyond repair. 2. Warranty Protection: If your water heater malfunctions, any manufacturer warranty that is still in place may be voided if it wasn't properly installed with adequate venting. 3.
A. O. Smith power vent gas water heaters are equipped with an electric blower fan that is installed on top of the water heater, which requires an electrical outlet to be close to the water heater. The blower pushes the exhaust and excess heat through the exhaust venting. The venting can run either vertically or horizontally with a longer line ...
However, atmospheric venting is highly susceptible to backdrafting. 2. Direct Venting. Direct Venting is the process of removing exhaust gases from a water heater by installing an inlet vent pipe and an outlet vent pipe (through the wall) in order to create an airflow. Direct venting is another form of water heater venting.
Step 4: Connect the Vent Pipe to the Water Heater. Apply sealant to the flange on the water heater exhaust port and connect the vent pipe to it. Secure the connection with screws or nails. Step 5: Run the Vent Pipe Vertically. Run the vent pipe vertically up through the attic or crawl space. Use a level to ensure the pipe is straight and plumb.
Here is another tip on how to properly vent a gas water heater: conduct a spillage test or draft test. Let the unit run for up to 15 mins so it can create a steady upward draft of combustion gases. Put a lit match or piece of paper close to the relief opening of the draft hood. If the steady flame or smoke is drawn into the opening, you see the ...
For safety, gas water heaters must be vented to the exterior of your home to remove the carbon monoxide produced when the water is heated. Learn how to be s...
Hot exhaust from the water heater naturally rises up through the vent and into the air outdoors, creating a draw that promotes this upward airflow. The power of the draw increases as the vent duct heats up. Atmospheric vent systems work well (and without electricity) if they are properly designed and the home does not have backdraft issues.