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Old 12-14-2008, 08:09 PM   #1
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Pinging in New Baseboard Heater


Greetings everyone,

Hoping someome can provide some insight to this problem I've been having.

Had a new heat zone installed last year in a new extension.
Here are the specifics:
Hot Water
High Output Base boards
Supply line to heaters is Pex

When the Heat first turns on I'm getting a loud pinging noise from the base boards, doesn't last the hole time, seems to be intermittent. The heater works great but the pinging is annoying. Any ideas?

As usual thanks for your good advice!!

Best Regards,
Tool Junkie

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Old 12-14-2008, 11:56 PM   #2
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Pinging in New Baseboard Heater


I assume you have fin tube with copper pipe and aluminum fins. When the fin tube is heated the two different metals expand at different rates. This causes the ticking and pinging. Haven't found a cure for the problem.
I have not used pex pipe for boiler supply piping.
I know it has been used for radiant floor heat where the supply temperatures are lower.


Last edited by SKIP4661; 12-15-2008 at 12:02 AM.
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Old 12-15-2008, 12:10 AM   #3
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Pinging in New Baseboard Heater


Probably air trapped in there and cavitating when it meets cooler water and the bubbles collapse. Bled out the radiator of any air.

And what Skip said.
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Old 12-15-2008, 07:22 AM   #4
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Pinging in New Baseboard Heater


Quote:
Originally Posted by Marvin Gardens View Post
Probably air trapped in there and cavitating when it meets cooler water and the bubbles collapse. Bled out the radiator of any air.

And what Skip said.

I have to admit I had to look up "cavitating", sounds like a good theory as to what is happening and its possible that I may need to bleed the system. When the system was originally installed it only pinged slightly so I also think Skip's theory works also.

As always thanks for the prompt and expert comments!

Tool Junkie
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Old 12-15-2008, 08:37 AM   #5
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Pinging in New Baseboard Heater


I also believe that your noise is due to the expansion of the metals (fins and pipe). I found that over time this pinging will diminish. Have also read somewhere years ago, where people would cut up old plastic milk jugs and create strips of plastic with slits (same distance apart as the fins) that would help to quiet the fins when they expand.
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Old 08-12-2009, 05:03 PM   #6
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Pinging in New Baseboard Heater


Old post, but I'll add an option for people that find this thread in a search...

I had a 'ping' coming from my baseboard last past winter, bled system, no help. Finally called in the heating company. Seems the temperature of my FHW system (should be ~180) had been cranked up well over 200, what I was hearing was STEAM! In a steam system steam is good, in a FHW system steam can = explosion.

So, if you're hearing pinging, check your temp too.

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