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Boiler is noisy at 160 deg presure is 17 psi

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Bleed the air

Posted on Apr 13, 2008

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Posted on Jan 02, 2017

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I have a ideal mini c28 which is loosing pressure when the boiler is off, but when topped up and heating turned back on the pressure keeps rising


According to the laws of physics, pressure will rise as temperature increases and falls as temperature decreases in a closed system. The issue is how much does the pressure change for a given temperature change. The more air in the system, the less the pressure change, and vice versa. Vent your registers (pump must be off). If they are noisy from water flow, vent again. Let the boiler come up to temperature and shut itself off. Check the pressure at this point. If it is less than about 15 psi, add water to get it to 15 psi. If it is over 15psi, vent the surge tank to get to 15 psi. If your surge tank is totally full of water, you will have to find a way of getting air into it. Always check your pressure at the same water temperature to really know if you are losing water from the system.

Oct 17, 2014 | Water Heaters

1 Answer

How to top up the pressure on the boiler


According to the laws of physics, pressure will rise as temperature increases and falls as temperature decreases in a closed system. The issue is how much does the pressure change for a given temperature change. The more air in the system, the less the pressure change, and vice versa. Vent your registers (pump must be off). If they are noisy from water flow, vent again. Let the boiler come up to temperature and shut itself off. Check the pressure at this point. If it is less than about 15 psi, add water to get it to 15 psi. If it is over 15psi, vent the surge tank to get to 15 psi. If your surge tank is totally full of water, you will have to find a way of getting air into it. Always check your pressure at the same water temperature to really know if you are losing water from the system.

Sep 24, 2014 | Water Heaters

1 Answer

Ac pressures on 2004 mountianeer


On a 134 system, normal pressure readings at 80 degrees with the system charged and running are 30-45 psi low side and 250-300 psi high side.

Jul 03, 2012 | 2004 Mercury Mountaineer Premier

1 Answer

I'm working on a 2006 E350 with a 5.4L. Lacking


sounds like it could be a cpule things, i would start with replaceing the fuel filter and re-testing if that yeilds no change unplug the fuel presure regulator or if posible temp clap off the return line and check presure again, if it comes up to where it needs to be then replace the regulator. finnaly if none of those things solve it i would be very suspect of your fuel pump modual. good luck! let me know if i can be of further help, please rate my answer take care

Apr 11, 2012 | 2006 Ford E-Series

1 Answer

The water does not get got enough. I replaced the thermostat, it did not resolve the problem. The water is still warm.


Did you replace the 95 deg thermostat or the 127deg thermal switch ?
Normal temperature control works like this, you turn on power and the boiler heats up. When it reaches 95 deg the thermostat will open and turn off power to the boiler, when it then cools down a little the thermostat will close and it will heat up again.
If the thermostat should fail in the closed position the boiler will continue to heat past 95 deg until it trips the 127 deg thermal switch which is a safety feature.
In your case maybe the 127 deg thermal switch is faulty and opening earlier than the 95 deg thermostat.

Nov 11, 2010 | Saeco Classico Espresso Machine

1 Answer

My 2 group astoria over steams from top of boiler.it warms up then in about half hr steam shoots out at the preasure valve doicky do i need a new one of those thanks greg


The pressure releive valve is pre-factory set to open if the pressure in boiler reach between 1.6 to 1.8 bars.
So either you have the presure switch (presostat) not working normal which supose to switch off the electrical element at 1.2 to 1.3 bars.
So look at the presure gauge at which presure the presure releive valve open and releive the steam out from boiler if it shown more than 1.5 bar the you need to check the presure switch since it does not switch off the heating element.
If the presure releive valve open below 1.5 bar then you need to replace the releive valve.
Good Luck

Mar 23, 2010 | Astoria Argenta SAE-2 Espresso Machine

1 Answer

LOW TIER PRESURE


if its 1 tire low obviously look for a nail in the tread or a leaky valve stem. if you cannot find a nail/screws etc in the tread. take stem cap off spray windex on stem right into the center, if you see bubbles, your stem is leaking, replace the core, cheap... available at auto stores, also need special tool to remove stem( cheap).
if all 4 are low, might be due to cold temps, tires loose i think 3 psi per 10 deg drop in temp,

Mar 10, 2010 | 2003 Chevrolet Impala

1 Answer

Pressure drop but no noticeable leaks in system .i have to top pressure up twice a week . there are no pipes under ground so iff it was leaking i would notice damp patch. could it be the boiler.


Are you sure the pressure exhaust valve on your boiler is not opening up @ some point after you refill your system, these are set @ 30# to open up, the next time you fill your system stop it @ 16-17 psi on your boiler. Be sure to bleed you lines when your system is hot.

Oct 26, 2009 | Heating & Cooling

1 Answer

Alpha boiler - wireless programmer failing


it sounds like the problem may be in the boiler and not the controller itself. Do you kno which is are the two wores that are the r-w for the thermostat take and purt them together and see if the boiler stays on or shuts off like it does with the thermostat. If it does then replace the reciever. If it doesn't then you have another problem. Good Luck

Jan 05, 2009 | Water Heaters

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