View Full Version : GlowCore boiler "popping"
Was wondering....my GlowCore hot water boiler seems to cycle on and off toward the end of a heating cycle. It will most of the time make a "pop" noise once or twice before it shuts off. What might cause this? I recently fixed a bad zone valve because it had finally failed and would not shut the boiler off. When it would run continuously it would really "pop" loud. Now it turns off, but it "pops" softly. Ideas?? Thanks in advance!
09-22-2005, 12:05 AM
Originally posted by kiva
Call a contractor to come take a look.
It's gas fired, not operating correctly.... let's see... how much longer should I wait...
How about calling a contractor BEFORE something MAJOR happens?
09-22-2005, 07:46 PM
I used to have a Glowcore, and they do need maintenance service calls more often than conventional boilers. It has relatively small openings for the combustion gases to pass through, and they need cleaning out regularly since there's always some dirt in the air.
When the tech comes out, then he can find what else might be wrong, like a faulty high limit, which could allow the boiling sound.
09-22-2005, 07:56 PM
Get someone on that now. The vertically installed burner needs to be cleaned and inspected regularly.
09-22-2005, 09:51 PM
Replace it before it leaves you without heat during a sub-zero night.
09-23-2005, 05:24 AM
That's a name I've gladly haven't heard in sometime and glad of it. We installed a lot of those and you recieved good advice so far. We even had soem of them staged.
09-23-2005, 10:28 PM
i ordered a part from them the other day. maybe they can tell you something. http://www.glowcoreac.com 1-800-676-4546
12-17-2008, 07:45 PM
Ask around for a company familiar with GlowCore boilers. Have them write you a PM contract to look at it every year! Given the age and history of this boiler, it would be foolish to neglect it.
There are many excellent Mod/Con boilers on the market today that will be a great improvement in efficiency and safety.
The pop you hear could be delayed ignition (explosion) or the boiler flashing to steam (implosion) as the circulator shuts down and the heat exchanger is still hot. Both are potential safety hazards and definite equipment stress factors.
12-17-2008, 09:26 PM
Definitely would have a full check on the boiler ASAP... Glowcore boilers are fickle creatures at best. Heat exchanger could be plugging up on it (a pro can carefully acid clean the exchanger), could have water flow issues, or the aforementioned high limit... Would strongly recommend budgeting a replacement. I took care of a facility that had many, many of these little guys. They get to the point where the maintenance required to keep them operating correctly just makes them problematic to keep around.
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