Gas Water Heater Exhaust Vent Installation

The trick is to provide the right amount of size height and draft in your ventilation.

Gas water heater exhaust vent installation.

Gas water heater draft hoods come in different sizes and if you are replacing water heater make sure that the draft hood and the water heater vent pipe match each other. Isolate the water heater by closing doors and windows shutting off the furnace and letting the water heater run solo. On standard gas water heaters the fumes are commonly exhausted through a back draft insert and flue. You can also run a manual test.

A direct vent water heater draws air for combustion from outside your home rather than inside. The back draft insert prevents air from entering the top of the water heater and improves heat distribution in the tank. Hot water heater venting. Use the plumb bob to be certain the center of the pipe at the ceiling and the center or the boot on the water heater are lined up.

If you feel warm air near the draft hood then your system is back drafting. In the attic use the plumb bob to mark the center of the hole to be cut for the roof vent boot. If the draft hood that came with your water heater has a top opening diameter designed for 3 vent pipe and you have 4 vent pipe installed use an adapter increaser to join both of them together. Direct vent gas water heaters are a type of gas water heater best suited for use when there is insufficient ventilation within the installation space in your home.

Backdraft means the exhaust gasses move downward in the exhaust pipe. Discover the differences between single wall vents. The exhaust gases and excess heat produced by your water heater are then vented back outdoors. Before properly venting a gas water heater it s important to determine if there is a proper natural draw.

With a vent pipe that is too large the water heater does not produce enough heat to sufficiently warm the vent pipe to get water heater exhaust gases to rise out of the home. In this case the exhaust gases backdraft into the home. 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. The n the gasses end up inside the home near.

A direct vent system pulls in. Cut the hole with the jigsaw.