Question about Water Flexcon WH8S Potable Heater Expansion Tank

1 Answer

I have vented air out of my Heatslave 20/25 EXPANSION TANK

M y heating system shutdown , I discovered it had air in the system and vented every thing in sight including the expansion tank the system works very well at the moment when the system is off its 1.25bar when it is running at number 3 its at 2bar however I am worried that by venting the tank I have filled it with water and may have left no room for expansion.

Kind regards.
Brian.

Posted by on

  • Anonymous Mar 25, 2014

    The flexcon top expansion tank has no pressure after removing a radiator but cant adjust with valves

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Contributor
  • 54 Answers

Yes, you have let the air out of the expansion tank. You can not or should you have to vent an expansion tank. There is a rubber diaphram in the tank so just read the label on the tank for the proper psi/bar and put air in to that amount through the air valve. Problem solved.

Posted on Sep 13, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My boiler has a squeeling sound during the warmu up. I think it is coming from the expansion tank?


The squealing sound generally comes from a circulator pump, if it has a drive coupling between motor and impeller housing there is an oil cup/or oil hole, add oil until it is full! If it is a cartridge style circulator you may have to replace it.

Sometimes air in a system will cause this squeal noise as well. Purging the air out of system may be required. If you need to know how to purge a system there is a good pdf file at this link for $8.95 The Basics of Purging Air
From your Forced Hot Water System
&
Troubleshooting A Leaking Boiler
Relief Valve
Miller Furnace Books Repair

The Expansion tank is factory set to 12 psi and the only way to tell if it remains with 12 psi is to drop the system pressure to zero and check the tank with a pressure gauge. If water comes out the air valvestem when you apply the pressure gauge, the tank is bad, replace it! If there is less then 12 psi on the tank add air to 12 psi and open water valves back up to normal operating pressure. Usually the feed valve will automatically stop at the preset setting.If the boiler is leaking water out any relieve valve drains, the feed valve, relief valve and or expansion tank may need to be replaced.

Oct 09, 2014 | Amtrol EX-30 Diaphragm Expansion Tank...

1 Answer

BOILER PRESSURE DOWN HOW TO GET PRESSURE BACK UP


Assuming this is not a steam boiler, your boiler probably has one or more of the following problems; (1) bad vent(s) not stopping after it purges air, (2) bad vent(s) that are blocked and can not purge air, (3) air bound caused by not inspecting #2 (and replenishing water, if needed) on a regular basis, (4) a water leak (low water cut off will prevent boiler from firing up), or (5) a defective supply water valve, or defective supply side check valve, or blocked water line, especially when sediment can easily foul the supply line. We need to look at the expansion tank. Is it water logged from a defective bladder? Is the Air Separator (near the X tank) operating properly? Similar to a vent, but larger, it can get clogged up and cause air to be trapped. Since the boiler will not start, you obviously have a low water condition. Solve that problem and you'll be warm again.

Feb 02, 2013 | Water Heaters

1 Answer

I have a Heatslave 12/14 oil-fired combi boiler installed approx 8 years ago. A problem has just developed on the domestic hot water side. My local heating engineer has investigated but so far hasn't...


Symptoms sound like crossover might be part of problem:
Crossover is when cold water enters hot water line due to faulty plumbing part like check valve, mixing valve, or bad faucet cartridge.
http://waterheatertimer.org/Crossover.html

Jun 12, 2011 | Bosch Water Heaters

1 Answer

My A.O. Smith 8 year old water heater drips water out of the expansion valve but only when it is heating water. The builder of my home mounted the Amtrol THERM-X-TROL ST-5 in the horizontal position and I...


It seems that you have this figured. In their literature all units are shown vertical, either inlet up or inlet down. Also, it appears that if the unit is full of water, (water logged) pressure will build up in the system. Temporarily, you could shut off water to the water heater, open some drains and use a pump to put some air back into the tank. This would at least get air into the upper half of the tank for a while until you can get set to make a repair.
Gary

Dec 14, 2010 | Amtrol ST-5-C THERM-X-TROL ASME Expansion...

1 Answer

Hi, my halstead ace high boiler has started losing pressure and when i top it up to put the heating on after 10 mins the pressure is high whats wrong with it?


Probably a waterlogged expansion tank. The tank provides a springy air cushion for the water to push against as it expands, and the air pushes back as the water contracts. This scheme minimizes the pressure change that would otherwise be caused by expansion and contraction of the water, giving the water somplace to go when it expands. If the air cushion is gone ... big pressure swings.

Dec 28, 2009 | Water Heaters

1 Answer

Drained system to change cylinder. re-filled but heating will not come on now is it air lock


connect hose to expansion pipe and blow through with main pressure, blockage should blow back into your storage tank, best of luck

Sep 23, 2009 | Bosch & Power Vent Water Heater

1 Answer

Air in hot water lines only after installing thermal expansion tank. tank is mounted below water line .


Does you system have an auto air vent - has a cap like tire valve. cap should be left loose.

Mar 05, 2009 | Amtrol ST-12-C THERM-X-TROL ASME Expansion...

1 Answer

Open vent central heating


yes it is possible toupgrade the system to a sealed one using a system boiler as you mentioned. the thing to bear in mind is to upgrade the radiator valves to pressure rated ones 10bar.
The probable cause of the over heating is down to the system being sludged up/cold feed blocked, or possible pump circulating problem?
I would recommend the installation of a magna clean filter to help keep the new boiler clear from system debris.I would definately power flush the system, if the system is a twin two port valve system then a automatic bypass should be fitted, all of this done by a corgi registered gas engineer

Kindly

Richie

Dec 18, 2008 | Protech Systems FasNSeal FSWMKE4 4" Vent...

1 Answer

No heat in the radiators in the upstairs of our home.


Hi, What your looking for is called a (hy-vent). it bleeds air out of a system. you should have one on the top of your expansion tank. it is 1-1/2" in diameter and about 3" long. there is a little cap on top, unscrew the cap off. it looks like a bicycle tire valve. press the stem down inside until water comes out, then put the cap back on leave the cap loose so the hy-vent can do its job. it should be a self bleeder.

If this doesn’t work for you, please write back. Thanks,

Nov 19, 2008 | Water Heaters

Not finding what you are looking for?
Water Flexcon WH8S Potable  Heater Expansion Tank Logo

Related Topics:

348 people viewed this question

Ask a Question

Usually answered in minutes!

Top Water Heaters Experts

freddyfox

Level 2 Expert

236 Answers

Kenneth Walker

Level 2 Expert

147 Answers

Cindy Wells

Level 3 Expert

5062 Answers

Are you a Water Heater Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...