Question about Watts 0274193 N170M2 3/4"

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I have a potterton 30 he boiler which has a pressure of less than 0.5. how can i re-pressurize it

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OK, without model number and pictures/more description, you need to make sure the the filler valve is properly adjusted. This valve will normally be on a copper pipe leading into the boiler. IT will have a collar/handle that you can raise/lower to open/close the valve. It will also have a screw to adjust pressure. If you open it and hold it open (usually up) the system should pressurize to the pressure of your incoming plumbing (should be ~40PSI). If you close it and the pressure drops below 6 try the screw. If this does not solve the problem you may need a new intake valve.

Posted on Jan 05, 2009

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Posted on Jan 02, 2017

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Alpha cd28c boiler loosing water and pressure through pr valve when heating is on,and when then switched off needs repressuring to use heating again.no obvious leaks.new pr valve been fitted.pressure


I assume losing pressure through the PR means Pressure Relief Valve (PRV) or temperature pressure (TPR). Open in TPR may mean boiler is overheating/overpressurized. Open in PRV means the Pressure Reducer/Fill Valve in the fill line of the boiler is broken.
House Water Pressure in a home is 30/40 PSI min to 60-80+PSI max.
Boiler PRV/TPR are set at 30 PSI open (SYSTEM PRESSURE) so too high a house water pressure will open the PRV/TPR. Replace the reduction regulator on/in the fill valve assembly

Oct 20, 2014 | Water Heaters

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

Pressure on my boiler gone to 0 how do i get my pressure back up


Turn the burner back on & make sure you have correct water level in the boiler.

Dec 15, 2013 | Water Heaters

1 Answer

I have a Potterton Combi Puma 80e When I use the shower the pressure seems to drop and shower goes cold! except when the central heating is on shower works fine


Does the red status led in the centre of the control board come on when hot water is drawn? You need to remove ONLY the front decorative cover to see the control board, two fixing screws at the base of it. If not the boiler won't fire when the CH is off.
The trigger for this is a pressure switch, replacement of which is beyond DIY scope.
FYV

Feb 11, 2013 | Water Heaters

1 Answer

Hi. We have a potterton netaheat profile boiler and the pressure has dropped so low nothing will work. I know it needs to be recharged but don't know how to do it. The only visible pipes are on the top...


The cold water feed to the boiler is where you will find the refill point which should be at the base of the boiler where all the pipes come in

Oct 06, 2017 | Water Heaters

2 Answers

Potterton Profile 60e doesn't start first time


could be fan speed or air pressure switch-is case seal sealing properly also check grommets under boiler for blowing.
YOU CAN ONLY WORK ON BOILER IF YOU ARE GAS SAFE REGISTERED.

Apr 04, 2009 | Water Heaters

1 Answer

I can't turn the bar pressure up on my Vaillant VCW 221 Boiler


on the pipework below there may be a silver braided hose with one or two valves on the end. turn the valve(s) so the handle is inline with the pipe this will allow water from the mains supply into the heating circuit , remember to keep an eye on the pressure gauge. fill the system to 1bar cold then shut down the valve(s). turn on the boiler and it should be ok, if you lose pressure again then you may have a leak somewhere which needs to be found.

Mar 25, 2009 | Water Heaters

1 Answer

Combi Boiler pressure gauge reading 0, and radiator half on!


The first thing you need to do is to put some more water into your heating system. This is usually done by allowing water from your (pressurised) domestic cold water supply to flow into the system: On older boilers, this is done with a connection (often made with a removable hose) on the pipework just outside the boiler. Newer boilers may have a built-in connection with some sort of removable link (sometimes looks like a plastic key).

Once you've got the boiler up to working pressure (typically about 1 bar - 15 psi), you should be able to bleed your upstairs radiator properly.

This may be all it takes, though the pressure excursions you're getting when you run the hot tap suggest there may be another problem. See what happens to the pressure as the boiler heats up and cools down. There really ought to be very little pressure difference between the two conditions. If you see significant changes, this usually means that the "pressure vessel" (or in hydraulic terms, system accumulaor) has lost its air charge.

The pressure vessel is a metal container inside the boiler, usually painted in red enamel. Somewhere near the top, you will find a schrader valve (like the one on a car tyre), and you can use this along with a tyre pump to replenish the air in the top of the vessel. This will reduce your pressure transients for a while, but you need to keep an eye on it. If the problem returns, you probably need to replace the pressure vessel (or clag another one into the plumbing alongside the boiler).

A.

Feb 03, 2009 | ACCO Brands Water Heaters

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