steam boiler questions


  #1  
Old 12-01-04, 07:34 PM
rehab
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steam boiler questions

how much water should be in boiler? glass reads halfway,Also
what should psi be on steam boiler? I have never worked on steam
boiler so I'm not sure how they work compared to hot water baseboard. It seems to work good, just not sure why it will shut
down when it reaches temp. then when you turn thermo. up furnace
will not start again.
 
  #2  
Old 12-02-04, 05:14 AM
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Water should be about half way up the glass. Where is the water level when the cycle is finished? If it is low, that may be the reason it waits before restarting. Pressure should usually not be more than 1.5 psi. Sometimes people think more pressure equals more heat and turn it up but that is the reverse of what really happens. There is no other control that should be in place to hold the burner off. Either steam pressure or water level. The rest is up to the thermostat. Is it gas or oil powered?

Ken
 
  #3  
Old 12-03-04, 07:34 AM
rehab
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steam boiler

The boiler is oil fired. Your info was correct, but i think pressure is to high, its reading about 5 psi on the glass guage
What to do?
 
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Old 12-03-04, 03:47 PM
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Is it 5 when it is cold? If so, the gauge is not correct. If it is zero when cold and 5 when hot, you need to turn the pressure down.

Ken
 
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Old 12-05-04, 04:19 PM
rehab
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steam boiler questions

Still having problems, pressure when furnace is hot and running is at 20 psi according to guage. Also furnace shuts down from
low water after running for about 3/4 of a day. Not sure what
is going on. Any help please!!
 
  #6  
Old 12-05-04, 05:00 PM
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Well, my last question is still unanswered. What is the pressure on the gauge when the system is cold. If it is zero, you have some serious problems and need a tech immediately. The relief valve on a steam boiler opens at 15 psi. If you have more pressure than that and the relief valve isn't opening you have a problem that needs to be repaired by a professional immediately.

Ken
 
  #7  
Old 12-06-04, 04:00 PM
rehab
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steam boiler

Replaced pressure relief valve,guage reads 0 cold, but managed
to get psi down to 8,still not good. Where should cut in
cut out settings be? Also losing to much water,one radiator
has vent that seems to be leaking steam but would you lose that much water in one day where furnace cuts out?
 
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Old 12-06-04, 04:35 PM
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Cut in should be about 1/2 or 1psi and cut out should be less than 3. 2 would be good. Steam should not leak from vents on radiators. If steam comes out, vent is defective.

Ken
 
 

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