Gas Water Heater Exhaust Pipe Installation

Horizontal exhaust outlet 12 minimum above the ground or expected snow level for cold climates.

Gas water heater exhaust pipe installation.

All water heater venting systems use a vent duct or pipe also called a chimney or flue to bring exhaust gases from the water heater to the outdoors. Type b gas vent pipe has a smaller pipe inside a larger pipe also know as double wall pipe for insulation and safety. The function of these fins on the gas water heater flue vent connector is to try to increase the transfer of heat from the water heater exhaust into the surrounding area maybe to make it warmer in a fantasy that we re cutting heating cost by exracting heat perhaps in hope of preventing frozen pipes nearby. How much does a water heater permit cost.

The duct may be metal or plastic depending on the type of vent system. This type of pipe is called b vent. 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. You re only looking at 20 to 100 out of pocket as opposed to several hundred dollars to call in a plumber.

Attach a garden hose to the drain valve and empty the tank either into buckets a floor drain or an appropriate place outside. The first permit is for the water heater itself. Turn off the water and gas supply shut off valves to the water heater. 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.

Gas water heaters need proper venting for operation. The hot exhaust gases from a natural draft water heater rise through an open draft diverter and out through a metal duct. Turn on the nearest hot water faucet. To check the venting on your existing unit close all windows and doors and turn on all gas appliances and exhaust fans and turn up the temperature on your water heater for a few minutes.

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. Gas water heater power vent induced draft gas water heater pvc pipe exterior terminations. Again check the manual but some of the most common water heater power vent pvc pipe requirements are. Begin the gas water heater installation by draining the old water heater tank.

Then hold an extinguished match near the vent hood. This ensures the water heater can heat the vent pipe enough to get exhaust gasses to rise out of the house. Power vented water heaters work the same as ordinary water heaters but the exhaust gases are blown out with a small fan instead of rising upwards through metal pipes.