Question about Air Conditioners

1 Answer

I have a 48 year old Bryant Boiler in my home for our heating system. I need to bleed the boiler as there are not any places to bleed the radiators. How do I bleed the boiler

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 7 Answers

Why do you need to bleed the boiler. this just means drain it. if it is air locked at the rads you need to get rid of the air

Posted on Sep 28, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Recently purchased and moved into older home with a hydronic radiant heat system with boiler. Upon running the system in the colder temps, we are hearing a gurgling sound recurring in some of the runs


typically hydronic systems like that need to be bled, start with the highest radiator, the bleed valve have a little square head and you need to have a key that fits them, most supply HVAC houses have them sitting on the counter but you can ask them for one.

Jan 14, 2015 | Air Conditioners

1 Answer

Taps get hot water the rads dont


The Tap water comes from a Domestic water heater. The radiators are heated from a separate source, usually a boiler of some kind. Follow the piping back to that source and see if it is heating. Next, if it has a pump it should be running. Last, look for air bleed ports on each radiator and bleed out any air in them. If nothing comes out when bleeding, air or water, look around the boiler for a water valve and add water till all the radiators are full. If you need more information, write back and try to be more specific. thank you for asking. Please grade the amount of help this has covered. Thanks again. Roger

Apr 05, 2011 | Air Conditioners

1 Answer

Does the boiler thermostat control the heat of the radiators as well as the hot water temperature? Does the thermostat control the water temperature and the pump - as our pump seems to be on all the...


There should be a control called an aquastat that regulates the temperature of the boiler. The thermostat will turn on the circulator to start the flow of water through the radiators. If the water coming back from the radiators is very cold, a control will shut off the circulator until the boiler can come up to a predetermined temperature then start the flow of water again. If you have a tankless coil for domestic hot water, you now have a triple aquastat that maintains the temperature for domestic as well as the boiler temp. So yes the boiler thermostat (aquastat) does control the heat of the radiators and domestic hot water. No the pump is regulated by your house thermostat. You should take an amp draw on the boiler and componants to find out what is drawing more electricity than it should and popping your fuse.

Feb 19, 2011 | Air Conditioners

1 Answer

My boiler heating is working but hot water is not coming. i want to know how to set hot water 24 hours 7 days


As I understand your question, you have a boiler with a 'summer/winter' hookup for domestic hot water.

Your boiler should run all the time, i.e. not be shut off by you. Your boiler provides hot water for baseboard heat in your home ... possibly through several 'zones' each controlled by an individual thermostat and circulator. Yours may be a steam system. If this is the case, you have radiators not radiant baseboard heaters and no circulators.

Your summer/winter hookup provides a constant supply of domestic hot water. It does this by taking cold water from your water main and passing it through a copper coil which sits inside your boiler and then to your hot water main in your home. Since the coil sits in the hot water at the top of the boiler, it is constantly being heated. This coil may be in a deteriorated condition in your case or it may be too small for your needs.

Several years ago, I did a small upgrade to my mid 1950's era American Standard boiler. The summer winter hookup in my case was mounted on a 4 inch cast iron boiler plug. The coil was 12 feet long (folded up to a package about 1 foot long). I was very afraid when the plumber came in with what amounted to a 10 foot long pipe wrench. My fear was I would have a pile of broken cast iron at the end of the day. All is well that ends well. He got the old one out and replaced it with a coil that consisted of 20 feet of copper tubing 3/4 inch in size (the folded tubing was about 20 inches long and fit nicely into the boiler). We now have all the hot water a household consisting of one guy and three gals would need in all but the extremest of times..

I think you r answer is here ... replace your summer/winter coil with a new, bigger coil.

Something else I did. My kitchen is 60 feet (pipe wise) from the boiler. It takes a long time to get hot water there. I put in a small electric hot water heater just under the kitchen. I put a timer on it so it runs for a couple hours in the morning and a few hours in the afternoon. The hot water line from the boiler serves as the cold water input to the heater. I now enjoy the convenience of quick hot water in the kitchen with the relatively low cost of oil heated water from the boiler as a relatively small cost of electricity.

My winter settings are 160 - 200 and my summer settings are 120 - 150 which seems adequate for our needs.

Thanks for your question at FixYa.com. I hope I have been of assistance to you today.

Feb 05, 2011 | Air Conditioners

1 Answer

I have a Crane Sunnyday model 7-w-102a recirculating boiler in my home. It is natural gas fired. When it operates, it sounds like someone is banging on the pipes with a hammer. This is much louder than the...


I would suspect that you have a large amount of air trapped in your system. There should be auto bleeder valves in the system that may not be working. If you can locate them relieve pressure on the system and remove top bonnet from valve. Make sure it is clean and not stuck in closed position. Reinstall and pressurize system. Also on your system whether you have baseboard fin units or standing radiators there should be manual bleeder valves on each one. Most of these have a nut which you can open slightly to bleed air. Do this on each unit and bleed till you get waterand no more air than tighten nut to close. Some units have a valve on them that is like the air valve on your cars tires.Remove valve cap and using small screwdriver or other suitable tool depress valve stem and bleed all air. You may have to do this several times to get all air out of your system. I hope this helps you. Thanks

Nov 21, 2010 | Air Conditioners

1 Answer

Manual for model no. 234c 5pw bryant boiler


I have a bryant boiler in my home and been having a plumbing co work on it since spring and they replaced the 3 speed pump with a single speed now cant get it to push air out of system

Nov 08, 2010 | Bryant Air Conditioners

1 Answer

I have a two year old valiant boiler which has been working up until 2 months ago, I have several radiators that come up to temperature, go down but do not come back up again. I have had the system...


Do you hear air in the system? It may need to be purged. Do you have the little coin vents on each radiator? Try bleeding air out. Your circulator may not be working correctly. If it is more than 8 years old, it would be a good idea to replace it. By installing the thermostatic valves, you have added restriction to the system. I would suggest stepping up the pumping capacity of the new circulator. Good luck!

Mar 03, 2010 | Goodman Air Conditioners

1 Answer

I'm a new plumber. I was asked to restart a burnham gas fired steam boiler in a fire damaged apartment. The boiler was drained last winter along with the radiators but was not winerized. I am their plumber...


1. You need to fill the entire system with water before you fire it, boiler AND radiators... Then, you would normally vent as much of the trapped air in the system as you could... It's not like you are only going to fill just the boiler and then pump that water through the pipes.

There is a temp setting on the boiler, but I don't think that's a solution. Remember that the water in the system is going to begin circulating as soon as you start the boiler. So, it will start circulating when it's cold, and then gradually warm up.

Your problem is not the sudden rush of hot water, it's going to be filling the system in the first place, and getting the boiler started before the system freezes up ...

I don't really have any suggestions for you though, other than perhaps renting one of those construction heaters ... and bring the building temp up a bit. But there's certain dangers associated with them too... Carbon Monoxide for one, fire is another (if used improperly).

Just thought of something: Fill the system with glycol based anti-freeze solution that's designed for heating systems. That oughta do it...

I'm guessing there's not a functioning water heater either at this point, is there ? If there was, you could possibly rig something up to fill the system with lukewarm water, and fire it before it freezes up.

2. You don't have a lot of choice. You have to fill the system, fire the boiler & wait.
It is going to take a long time to get the system up to temperature. Instant circulation is a double edged sword. The upside is you get a little bit of heat into the water & have it moving making freezing less likely. The downside is, it's hard on the boiler with that much cold water coming back you are likely to have condensation.

Apr 22, 2009 | Air Conditioners

1 Answer

Water and radiators dont come on at the same time i have to turn the valvue with screwdriver and then water comes on or turn it again then radiatorscome on please help


I assume this is hotwater heating.  Your problem is air in the line.  You may have something called an airscoop at the boiler...it is attached to a pipe at the top of the boiler and has a radiator vent unit on top.  Purge it and you may fix your issue...or not.
If you don't have one or the problem persists, you'll have to bleed all of the radiators...perhaps several times.  Be sure when you're doing this that you have water in the boiler before and after.  If you fire a dry boiler, this is a problem which will be very expensive.  You should see about 15 PSI or so of pressure indicating on the gauge.  If you see less than 10 or more than 25, you also have a feed valve issue.  These things do get dirty and they do clog.
If your vent valves at the radiators are more than 10 years old, get replacements.  Take a couple of pictures of them and go to the plumbing store.  Turn the water to the boiler off and quickly change each one.  Turn the water back on, bleed again and you will be fine.

Nov 13, 2008 | Air Conditioners

1 Answer

Bled my radiators yesterday, and now the water pressure gauge on the bioler is at zero - it wont start up below a pressure of 0.5. I suspect the boiler is air-locked. Any ideas on how to bleed it?. Its a...


You boiler is more than likely low on water. There is normally an automatic water feed. When you bleed a system the pressure naturally drops but is compensated by additional water feed into system. You have a problem in the pressure make-up water feed to your system.

May 11, 2008 | Air Conditioners

Not finding what you are looking for?
Air Conditioners Logo

Related Topics:

200 people viewed this question

Ask a Question

Usually answered in minutes!

Top Air Conditioners Experts

Dan Webster
Dan Webster

Level 3 Expert

8147 Answers

Bill Long

Level 3 Expert

577 Answers

Tim Whalen

Level 3 Expert

3056 Answers

Are you an Air Conditioner Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...