[matts14120]

Hi I have 1 rental property and relief valve is leaking occasionally have bucket underneath has about 1" of water in 3 months boiler is from 05 its a crown aruba gas I've replaced the fill valve, the prv, pressure /temp gauge considering I had 0 psi at beginning of heating season and replaced air valve above expansion tank all has been good besides the occasional dripping. I don't live there so it's hard to get over there all the time, I've had 2 heating guys there and they confirmed all was good my expansion tank is my last guess considering it's the original it sounds hollow when tapped and was reading like 8-9 psi tried to pump up to 12 but idk what to do know any ideas? Thanks

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[jmon]

if xpansion tank has bladder and it won't hold pressure or water comes out of schaerder valve, replace it.

 

[matts14120]

if xpansion tank has bladder and it won't hold pressure or water comes out of schaerder valve, replace it.

Yea it has bladder I belive bottom was hollow no water came out, just psi should be like 12 I believe and was at 8-9

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[Bondo]

Yea it has bladder I belive bottom was hollow no water came out, just psi should be like 12 I believe and was at 8-9

Ayuh,...... 12 is correct for most houses,......

It could be the pressure valve itself,.....

 

[roughneck]

What is the bladder pressure?
What is the boiler pressure?

 

[matts14120]

What is the bladder pressure?
What is the boiler pressure?

It's a newer relief valve, the expansion tank was 8-9 got it up to 10 boiler pressure was at 12-14

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[roughneck]

And the boiler is leaking at these pressures?

 

[matts14120]

And the boiler is leaking at these pressures?

Yea

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[matts14120]

Yea

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Then again I'm not sure pressure is steady at 12-14 but goes up in 20s when boilers on I assume it shoots water out cause it hits 30psi

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[roughneck]

What’s boiler temperature?

 

[matts14120]

What’s boiler temperature?

I'm not there but I believe it was set at 175

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[roughneck]

So either your relief is leaking or your boiler pressure is spiking.
May have to sit and watch the boiler cycle.

 

[matts14120]

So either your relief is leaking or your boiler pressure is spiking.
May have to sit and watch the boiler cycle.

OK I'll have to find time to do that. It's a new prv but I know bad ones are made even new, what would cause pressure to spike?

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[roughneck]

Faulty fill valve, or an issue with the expansion tank.
Is there a domestic coil in the boiler?

 

[matts14120]

Faulty fill valve, or an issue with the expansion tank.
Is there a domestic coil in the boiler?

Brand new fill valve, no domestic coil I don't think that's to heat potable water right cause I have a hwt, jw if the expansion tank is culprit even with out being waterlogged but being 15 years old

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[roughneck]

Until you see it actually start leaking and the conditions in which it happens, it’s hard to say.

 

[matts14120]

Until you see it actually start leaking and the conditions in which it happens, it’s hard to say.

I hear ya, if I still lived there I'd have this figured out, I'll have to set up a time to watch it cycle, thanks for all the help

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[Ebierley]

Is the water heater a stand alone gas or electric tank or connected as a zone from the boiler?


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[hvacman96]

The pressure in the expansion tank needs to be checked with no pressure on the water side of it.System pressure needs to be 0psi and tank would be 12psi

 

[beenthere]

Its possible the bladder has hardened, and the tank needs replaced.