boiler pressure dropping

[raferty]

got a new boiler and the pressure gauge drops erratically from time to time locking the boiler out until the manual feed valve is opened for a second and pressure is restored. Air eliminator is open and very sure of no leaks. Could this be a trapped air pocket in the system that once in a while works its way near the gauge or limit switch to drop pressure?? could use some advice

[acmech13]

hot water or steam?

[raferty]

water...thanks

[acmech13]

what kind of boiler? usually the pressure rises when its heated.

[jwiehagen76]

Sounds like you need to call a service tech. manually feeding water to a closed loop water system is not right. By introducing untreated water continuously will cause sediment build up leading to heat exchanger failure.Boiler should be equipped with a lwco and a auto feed valve. So in the event of low water it should temporary rectify issue. You my be heading for bigger issues later on

[raferty]

its a munchkin 80m, the pressure will be good for days or weeks then out of the blue the pressure is a zero and its locked out. i'll open the manual water valve for a split second then the pressure jumps to 12psi and fires. happened maybe five times this winter

[hvac248]

are you pumping away???
:eek:

[hvac_superman]

Call the installers back if it is new. May have a bad exp tank.

[heaterman]

Call the installer, somethings not right. I have several ideas but since this is not a DIY site, I can't help

[acmech13]

was your fill valve and backflow changed when they installed it? how hard is your water? this changes everything at first u said as it ran the pressure would drop every heating cycle. Is your fill valve set properly?

[skippedover]

You should never have to manually operate the auto-fill valve. Minute leaks will invariably allow the boiler pressure to drop over serveral weeks. The auto-fill is not responding. Call your installers back and have them change it out or properly adjust it while it's in warranty.

[acmech13]

80 m is that the little black boiler. if so i just installed on the other day. replaced a hydropulse.

[Roscoe]

Popcorn.......getch ya popcorn hea......Popcorn getch.a popcorn.......hea.......:D

[pilotlight]

I have a filling that this thread will be

CLOSED

SOON

[tinknocker service tech]

you got a problem and need to call the installer back
pressure should not drop and most likely you have a small leak
feed should be doing its job not you doing it for the feed

that is a high end unit and it will be junk soon it you do not get the problem resolved soon:rolleyes:

make the call

[hvac_superman]

you got a problem and need to call the installer back
pressure should not drop and most likely you have a small leak
feed should be doing its job not you doing it for the feed

that is a high end unit and it will be junk soon it you do not get the problem resolved soon:rolleyes:

make the call

True but if the system is full and air free the fill could be shut off and run that way. If its constantly feeding theres a leak and the boiler will eventually die.

[heaterman]

What about the peanuts?? THE problem is you are missing water somewhere. Adding water is treating the symptom, not THE problem.

[GaryKirk]

got a new boiler and the pressure gauge drops erratically from time to time locking the boiler out until the manual feed valve is opened for a second and pressure is restored. Air eliminator is open and very sure of no leaks. Could this be a trapped air pocket in the system that once in a while works its way near the gauge or limit switch to drop pressure?? could use some adviceHow much of the system was replaced?

[Corpsie]

Call the installer. You paid good money for a properly functioning system. I understand you may have a need to know what's failing, but ask the installer after it has been properly repaired.

[tedkidd]

How much of the system was replaced?

Good question - Point being - Be prepared to have a repair bill if you kept some old parts to save $ on the install.

[beenthere]

Do you have cast iron rads?

Did you reuse the old steel expansion tank.

[tinknocker service tech]

i will take peanuts and a beer please:D


did you make the call yet