Receiving Helpdesk

how do you purge the air from a gas water heater

by Dr. Tabitha Auer DDS Published 4 years ago Updated 3 years ago

Part 1 of 2: Flushing the Heater Download Article

  1. Locate the breaker/fuse box for an electrical heater or the thermostat for a gas heater. ...
  2. Disable the circuit or fuse that powers the electrical water heater, or turn the thermostat to "Pilot" on a gas heater.
  3. Turn off your cold water supply by rotating the water shut-off valve clockwise. ...
  4. Open the hot water faucet in your sink or tub. ...

More items...

Part of a video titled Remove Air from your Boiler and Heating System | How To
7:21
16:25
And just open it for a second or two and then close it back up and the reason why we do that isMoreAnd just open it for a second or two and then close it back up and the reason why we do that is because we can get some air trapped in this short leg of piping here between this valve and this valve.

Full Answer

How to purge air from a hot water heating system?

How to Purge Air From a Hot Water Heating System 1 Shut your boiler off and record what the water pressure was. 2 Make sure that the self-feeding water valve is connected to the boiler so that water is available. 3 Open up all the valves that go to the different heating zones in your home, then close all of the shutoff valves. More items...

How do I clean the air out of my boiler water feed?

Once you have the water feed valve fed into your boiler you will be ready to get the air cleaned out of it. Either right at the top or towards the top of your boiler you will be able to see either a wrench adjusted nut or a spring loaded pressure valve.

What is the best way to purge a propane line?

The safest way is to continue to hold the pilot buttom down and bled the air through the little pilot tube. Three full minutes should purge your line. You could also apply a continuous flame to the thermocouple allowing you to bled the air through the gas valve but this results in burnt eyebrows and mustaches sometimes.

What does it mean to purge a boiler?

Basically, purging your boiler will involve getting all of the air out of it so the water that is in the boiler will be able to run through it freely. Any air bubbles trapped inside of your boiler will only end up stopping the water flow, and will cause your boiler to need to be purged so it can function properly.

How do I purge the air out of my gas water heater?

0:131:40How to Get Air Out of the Lines for the Hot Water Heater - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd into your drain. But it also works great to allow the air to get out of your tank. That way theMoreAnd into your drain. But it also works great to allow the air to get out of your tank. That way the more water can come in and actually the only area you'll have to get out is in the lines above.

Do you need to purge air from hot water heater?

Most hot water systems are closed systems, which means that there's always water circulating back and forth between the pipes and boiler. Because of this closed system and the fact that most hot water heating systems don't have an automatic purge system, you will need to purge or bleed your system every fall.

What are the symptoms of air in a hot water heating system?

If a hot water heating system develops too much air in the piping you may hear bubbling or gurgling in the heating pipes when the heating system is operating, or worse, so much air may be in the heating piping, radiators, or baseboards that heat may simply not circulate at all.

How do you purge a hot water system?

3:007:47How to Bleed a Hot Water Heating System - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou can turn you can unscrew this see there's a little hole there and you can bleed off. So you canMoreYou can turn you can unscrew this see there's a little hole there and you can bleed off. So you can focus in on that there.

How do you know if you have air in your water pipes?

The loud gurgling and prolonged vibrating noises are nothing to worry about! This is simply an indication that there is air caught in your water pipes. There are several reasons why there may be air in your pipes and sputtering out of your faucets.

How often should you bleed a hot water heater?

Most homeowners should flush their water heaters every six months or so, but if you have extremely hard water, you may want to do it more often. Flushing your hot water heater could be necessary as often as every few months depending on the mineral content of your local water supply.

How do you bleed air out of a hot water baseboard heater?

Hold a cup next to the bleed valve (there may be just one bleeder valve for all the baseboards in a single room). Use the square socket valve key (or bleeder key) that came with your baseboard radiator heating system to open (turn counterclockwise) the bleeder valve until a stead stream of air and water flows out.

Will an airlock clear itself?

Airlocks do sometimes fix themselves, but it isn't a risk worth taking. Airlocks occur when air becomes trapped in the hot water or central heating system. Vapour becomes caught in a high point of the pipework because the gas is less dense than the water in the system.

How do you remove air from hot water pipes?

0:127:22How to clear stubborn Airlocks. No hot water - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd you just put just on the cold one that on the hot one. Turn on both the taps. And you clear toMoreAnd you just put just on the cold one that on the hot one. Turn on both the taps. And you clear to what will rush up the pipe. And blast.

Do you have to bleed a hot water heater?

Bleed your hot water heater to keep it in good working condition. Your tank needs to be bled at least once a year, but if your hot water heater experiences a lot of sediment buildup from hard water, perform this biannually.

How does a hot water system heat a house?

This type of system consists of running pipes that contain hot water from your boiler through the rest of your house. The heat is distributed through baseboards along the floor or radiators. As the water cools, it is returned to the boiler to be reheated.

How to get water pressure back to normal?

Once you don't see any more air bubbles in the water, release the self-feeding valve and close the spigot that the hose is attached to and let the water pressure to return to normal.

Why does my water heater make a noise?

Occasionally, air will get into the heating system, which will cause noises such as bubbling or gurgling; if there's enough air, it could prevent the water from circulating throughout the house. You can fix this problem by bleeding your heating system. Advertisement.

How long to purge a thermocouple?

The safest way is to continue to hold the pilot buttom down and bled the air through the little pilot tube. Three full minutes should purge your line. You could also apply a continuous flame to the thermocouple allowing you to bled the air through the gas valve but this results in burnt eyebrows and mustaches sometimes.

What happens if a gas line is too small?

If the line is too small for the length, the burner will not operate properly, if at all, but there will still be some gas coming from the pipe. If the line has an obstruction, you have to find out how it got there before you do anything, especially using high pressure air.

Where is the Plumber located?

Plumber. Location: Cave Creek, Arizona. pipe. You can run a gas line as far as you wish to and it will still flow gas. If the line is too small for the length, the burner will not operate properly, if at all, but there will still be some gas coming from the pipe.

Can you run gas pipe so far?

You can only run gas pipe so far and have it work properly, but it should still run enough for it to "smell". How far is the total from the curb to house to garage?

Purging gas line

I am starting up a gas water heater. It is located at the far end of the house from where the gas line enters... about 60 feet of 1-1/4 piping main... and about 15 ft of 3/4 to the unit. The first few times I tried to fire up the unit it cycled three times and shut off.

Comments (9)

dont' want to be a whooz but this is not sounding too good. When we switched out gas dryers at work, although a short run, they fired right up.

image
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 1 2 3 4 5 6 7 8 9