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Old 02-01-2011, 04:52 PM   #1
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Problem refilling radiator system after repair


The bladder in my furnace's (Burham P204A) expansion tank recently failed and I needed to replace it. I turned off the water supply, turned off the power and gas, drained the system, removed the tank and replaced it (Extrol 30). I turned on the city water supply to the furnace after completing the replacement, but no water is flowing into the system.

What do I do?

There is a bell shaped connector between the valve for the water and the furnace and I recall a contractor doing something with that in the past to refill when she removed one of my radiators upstairs during a remodel.

Is it possible that I need to refill the furnace manually by connecting a hose to the drain?

Would appreciate any and all guidance and am happy to answer any questions.

-Justin

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Old 02-01-2011, 05:12 PM   #2
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Problem refilling radiator system after repair


Aren't there bleed valves on the radiators?

When filling the system from scratch you will need to alternately admit water to the system until the pressure reaches the proper level, and bleed the radiators little by little.

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Old 02-01-2011, 05:21 PM   #3
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Problem refilling radiator system after repair


Hi Allan

Thanks for responding (its getting cold!).

There are bleed valves on the radiators. Will opening those permit water from the supply to come in to the system? Right now, I have no water coming in to the system at all.

(Sorry for my naivete, this is my first time dealing with this)
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Old 02-01-2011, 05:42 PM   #4
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Problem refilling radiator system after repair


Is it possible that I need to make an adjustment on the pressure reducing valve to let water in to the system?
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Old 02-01-2011, 05:45 PM   #5
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Problem refilling radiator system after repair


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There are bleed valves on the radiators. Will opening those permit water from the supply to come in to the system? Right now, I have no water coming in to the system at all.
Ayuh,... That bell shaped fitting you spoke of is the Auto-fill valve...
It has a little metal bail loop on it Right,..??
Edit: you were posting when I was, I guess you know what the pressure reducing valve is, 'n I don't know what the bell shaped thing is...

It's supposed to admit water to the system up to 12psi...
If the air is pressurized to 12psi, openning a vent in a radiator should allow water into the system...

Btw,... By lifting that little metal bail handle, it should allow line pressure through it...
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Old 02-01-2011, 05:57 PM   #6
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Problem refilling radiator system after repair


Did any water go into the furnace automatically?

Check for an ordinary valve in the water line feeding the bell shaped reducing valve and the furnace.

If you lift the handle on the bell valve, you need to monitor the gauge to be sure you don't put too much in.
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Old 02-01-2011, 05:58 PM   #7
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Problem refilling radiator system after repair


OK, just so Im clear on what to try next--

If I open a vent in one of the radiators, the water should start flowing from the supply line into the system, right?

What about connecting a hose and manually filling if the above does not work?

Also, whats the "little metal bail handle"?

Thank you!
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Old 02-01-2011, 06:02 PM   #8
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Problem refilling radiator system after repair


Allan-

No water is going into the furnace automatically even though I opened the supply valve (its about 6 inches before the PRV).

I havent removed the cap on the PRV (It has a hex nut and four screws keeping it closed) to expose the handle. Is that an option is opening the valve on one of my radiators doesnt work?
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Old 02-01-2011, 06:13 PM   #9
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Problem refilling radiator system after repair


I just opened the valve on one of my radiators upstairs and the water is still not flowing in from the supply line.

Manually fill with a hose? open the PRV?

Thanks, all. I really appreciate it.
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Old 02-02-2011, 09:13 AM   #10
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Problem refilling radiator system after repair


Update:

I refilled the system (manually using a hose) and my meter is reading 12 psi. I have let out air from all of the radiators (starting on the top floor) twice.

Am going to fire it up now and see what happens. Any tips?
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Old 02-02-2011, 10:11 AM   #11
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Problem refilling radiator system after repair


Quote:
Any tips?
Ayuh,... Figure out Why the pressure reducing valve/ Auto-fill valve ain't workin'......

If it's Full, 'n at 12psi,... You should be Ok to light it off....

Do ya have a picture of the water feed plumbin',..??
Is there a valve you missed, further Up-stream,..??


My pressure reducing/ auto-fill valve has a metal bail on it, when lifted, over-rides the 12psi setting, 'n allows quicker fill ups....
Sorry for the confusion yesterday,...
I got busy, 'n hadta Go...

Last edited by Bondo; 02-02-2011 at 10:13 AM. Reason: added
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Old 02-02-2011, 10:17 AM   #12
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Problem refilling radiator system after repair


Hey Bondo,

Thanks for getting back to me.

Right now, I've had it running for about 45 mins and everything seems fine. Im going to turn it off in a few minutes, let it cool and then bleed the radiators for air again (starting at the top floor, right?). I can then add water if need be.

The system is at about 15/16 psi right now when its running. Should I try to get it down to 12? If so, how? drain it on the furnace?

I can send photos if you think thatd be helpful.
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Old 02-02-2011, 10:59 AM   #13
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Problem refilling radiator system after repair


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Originally Posted by jgoodman View Post
Hey Bondo,

Thanks for getting back to me.

Right now, I've had it running for about 45 mins and everything seems fine. Im going to turn it off in a few minutes, let it cool and then bleed the radiators for air again (starting at the top floor, right?). I can then add water if need be.

The system is at about 15/16 psi right now when its running. Should I try to get it down to 12? If so, how? drain it on the furnace?

I can send photos if you think thatd be helpful.
Ayuh,... I'd like to see a picture of the water feed to the boiler, to figure out Why it don't fill on it's own...

No reason to shut it down to bleed it.... Just bleed it wherever you can, while running...
Beening Air, ya the top is a good place to start,... follow the loops or zones through...
The caution I see is, ya gotta watch the pressure,... As you bleed it, it'll drop... That's why ya gotta get the auto-fill fixed...

Btw,... It's set to 12psi, Cold... When runnin', it runs Higher...
30psi is when the pressure relief valve blows off....
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Old 02-02-2011, 11:22 AM   #14
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Problem refilling radiator system after repair


OK, so I just got the add'l air out of the radiators (only one upstairs had any air in it) and we seem to be running fine (around 20 psi). How do I know if I need to add more water?

I will take a photo later today and post it up so we can get the PRV straightened out.

Thanks!
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Old 02-02-2011, 11:33 AM   #15
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Problem refilling radiator system after repair


Quote:
How do I know if I need to add more water?
There'll be more air, 'n the pressure will drop....

If there's no more air, 'n no leaks, it shouldn't need more water...
But,..
I'd still fix the Auto-fill...

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