Gas Furnace Sediment Trap

Improperly installed sediment trap on new gas tankless water heater.

Gas furnace sediment trap.

Drip legs technically call just a drip are installed to collect condensation in a gas piping system so they are installed in a low point to prevent condensation from running back into the gas meter. It is actually a very useful component of the gas line known as a sediment trap. Gas fittings and nipples what s included. Most water heaters do not have a sediment trap in them.

He has a horizontal run of 1 gas line actually several going to rooftop package units and he just put a tee right in the middle of the horizontal run with a nipple and cap stemming down from it. The most frequent improperly configured sediment trap is where the gas supply connects to a tee fitting installed with the tee tap facing down the gas supply is connected to one end of the horizontal tee the appliance is connected to the other end of the horizontal tee and a short nipple is installed into the down facing tee tap the nipple. Gas piping installed underground shall be a minimum of 12 in depth 18 where external damage could. Different areas have different contaminants in the gas and the traps help catch these.

Black nipple 1 2 in. Gas leak detector spray csa yellow gas thread seal tape 1 2 in. Sediment traps sometimes mistakenly referred to as drip legs are designed to catch sediment in natural gas before it enters into the water heater or furnace gas valve. Black cap 1 2 in.

I have recently run across a contractor who wants to argue over the proper way to build a sediment trap. In the above image the trap is perpendicular to the flow of gas. Missing sediment trap on gas water heater. It s called a sediment trap.

The nipple and cap should be directly down in the directional flow of the gas line. Hi everyone i am the local mechanical inspector in my city. Handy kit contains everything you need to build a sediment trap onto your home s water heater. Sediment traps are intentionally installed to help prevent sediment in the gas piping from getting into the gas valve or burner area of an appliance and fouling things up.

Did the plumber possibly leave it in case you wanted to add to the line. Have you ever looked at your gas furnace or gas water heater and wondered what the short piece of gas pipe going to nothing was for.