New Boiler installation is not working.

virtualplumber

I only skimmed it once. I will skim it. The fill has a delay on it . It does shut down and wait for filling. So there is an on off cycle that is going on with this delayed fill gizmo.

Also what about the uninsuated fittings on the riser off the top of the boiler? Do you think that could be causing any issues? I have about 5 or so fittings that are bare. the pipe is insulated.

virtualplumber

New Boiler installation is not working-Need Help.

I recently installed a Weil McClean Steam Boiler. I sized it according to the radiation, I installed it according to manufacturers specs. Proper header, hartford loop etc... I repalced all the vents-main and local. It is a one pipe system. The header splits to two loops, and joins back together with a common return. There is a good fall back to the boiler, There is not any noise or hammering in the system. I have the pressure set at .5 and 1.5 lbs. Some of the radiators on the second floor get warm and two of them are cold. According to the customer they worked with the old boiler. I have replaced the vents. They are pitched properly. The valves are open. We have had temp in the 30's and the system is running all night. Some of the radiators are getting very hot, even on the second floor. I am at a loss and do not know what to do with this one. HELP!!!

Unknown

Is ALL of the piping insulated?

The mains were originally sized to be insulated. If they're bare, the mains are too small to carry the steam that the system needs.

Is the water clean?

Noel

clammy

vents

What condition where the vents in and does the system have main vents on the return?I wouls also check all the raditor hand valves to ensure that they are all open ,re check pitch on rads while your at it ,check for closed return and or supply main valves.What type of low water cut off is on the unit i have recently seen alot of units equipted with electronic lwco that time out and shut the burner off every 10 to 15 minutes it really screws the boiler when you have a large systems .I would check the mains for vents and if the mains are not insulated i would figure the lose for that and see you may have your steam condensing in the mains leaving you with very heavy and wet steam ,wet steam does not distrubute to well and heats even worse .Keep looking as Dan says some times the promblem and the fix are not in the same place ne noisey and look around get out of the boiler romm .What type of piping system is it 1 pipe 2 pipe conventors or rads ,be a dective peace and good luck clammy

virtualplumber

Insulation and Delayed fill valve

There is an electronic delay on the fill valve and the it does have a delay. the only thing that is not insultated are 4 or five of the fittings on the main riser up to the header. The piping is insulated however. the Return drop is not insualted. All other piping is insulated.

virtualplumber

Insulation

The main is insulated. I did not insulate some of the fittings on the new header, about for of five of them. As far as dirty water. I did boil off the system when I started it up however I did notice a redish color residue on the top 1" of the water in the site glass.

virtualplumber

More response to your post

What condition where the vents in-
-They seemed to be okay. No noticable issues.

and does the system have main vents on the return?
-Yes there is one main vent just before it drops down to the boiler. I installed a Hoffman # 75 Main LIne Vent there. The return is HOT.


I wouls also check all the raditor hand valves to ensure that they are all open ,
Unless the valves are reverse thread then they are open.

Mitch_6

Lack of heat

How long does the boiler run, does it cycle?

Are you running out of water for any period of time?

Did you skim the boiler is there surging?

Was there surging you may have blown new vents?

Did you try shutting down the radiators that heat and see what happens to the cold ones.

Did you try removing the vents from the radiators to see if they heat?

Is your boiler properly fired do you have proper manifold pressures did you do a combustion test ?
Note: I have seen gas service regulators fail and had problems with oil burners on start up. Oil or Gas?

Mitch S.

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steve_29

How many times did you skim the boiler?

Sometimes you have so much violence in the surging it shuts down the burner early

I would suggest skimming the boiler, especially if you only did it once.... it never hurts and it maybe this simple.

Keep us posted... good luck

virtualplumber

Your Answers

How long does the boiler run, does it cycle?- Unknown. Will test and report back.

Are you running out of water for any period of time? The Water does drop when it makes steam and the fill vavle delays the makeup so the boiler does shut down for a while.

Did you skim the boiler is there surging?- I did skim it. I did not notice any surging. But I will check again.

Was there surging you may have blown new vents?- I don't think so however I will check again.

Did you try shutting down the radiators that heat and see what happens to the cold ones. - I did not but this is a good idea. I will do this.

Did you try removing the vents from the radiators to see if they heat? Will try.


Is your boiler properly fired do you have proper manifold pressures- I will check.
did you do a combustion test ? - No I did not.

Note: I have seen gas service regulators fail and had problems with oil burners on start up. Oil or Gas? This is gas.

Mitch_6

Are you constantly

shutting down on LWCO you should have enough water in the system to run for two weeks without adding water.

If you went by the IBR chart you should have enough btu for pipe and pick up added a little missing insulation should not effect you.

I have installed on totally uninsulated systems with no problem.

Mitch S

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Unknown

Those few fittings aren't the problem.

Got any pictures of the installation?

Noel

virtualplumber

LWCO

The Red light did come on yesterday on the low water cut off. What gives here? Once filled if should stay on. maybe it is a surging issue?

Unknown

skimmed only?

Skimmed only once? One ten minutes or one 50 minutes of skim? Them old system sometimes take over dozen times of skimmings to get all years of cruds out of the system... During ur skimming, you can be covering those uninsaluted fittings with cold water paste... From reading your first post, u said there's two mains coming from the boiler into common wet return, which unheating radiators are on which main? If the one with oout the main vent, then air is not gettin out fast enough from the rapidly steamming boiler... Yes, please keep us updated !