HELP please on my Lochinvar WHN085

maybemark

I am not good at taking pictures, but I'll do my best

Gordy

Your old circ was a 007 correct? New circ is a 15-58 correct?

maybemark

maybemark

yes, you are right Gordy

Gordy

How about piping to the system

maybemark

maybemark

maybemark

before was 1 1/4" from the old gravity
I used 1"

maybemark

the old boiler was over 200,000 btu

maybemark

at least I have alot of time to figure out all these issues
why is the living room so hot now
why there is no heat in the back of the house
why the 2nd floor seems very comfortable
but the 1st floor, especially the rear of the house is cooler
and why can't the boiler get up to it's set point
127 degrees was the hottest it got from being on1/2 day

maybemark

I don't remember who came up with the idea of control valves for the living room, but them in the basement , you are not able to reach the valves where the radiator is now

maybemark

I thought of putting the living room as a seperate zone, I have that extra pump

Gordy

What speed is the circ on? Is there any noticeable signs of air pipes gurgling.

SWEI

Take a look a your Maximum SH Set Point parameter.

maybemark

no gugling
the pump was on high, I brought it down to mrd, and the h set point is at 180

Paul48

The way gravity system were designed makes it very easy to purge them. The very design that causes a convective flow will bring the air to the radiators. It may be a flow issue. Now....You say you have hot radiators(some), 120* radiators are not hot. Did you have a pro do the first fire?

Gordy

I agree with Paul purging should be easy. Flow takes me back to your original 007 things worked fine. The 15-58 has a different curve than the 007. Which leads me to believe flow issue. The fact that rooms the were cold, and are now hot.

Paul48

The lack of heat at the unit may be another issue altogether. It sounds like it's starved for gas. That needs a pros attention. It's not something you want to practice on.

BobC

Try clocking the meter when the unit first starts up, make sure all the other gas appliances are off when you do this.

Bob

wogpa67

I see a 1/2" gas line run to the boiler. How far from the main? And what size is the main?

maybemark

there is about 13 feet of 1/2", the rest is 1"

Harvey Ramer

If I am seeing things correctly, you have the supply and the return tied into the bull of a tee where it splits off to the 2 large steel mains. That's a big flow restriction. It should be manifolded as shown in the little concept drawing I attached. I also highly doubt the 15-58 pump is capable of producing the flow required by your system unless you want to make a career out of balancing radiators with the valves.

maybemark

I just took copper in place of the iron pipe that was there before
for some reason I am not able to open your drawing, harvey

Harvey Ramer

As far as the water not reaching the high temps you are expecting, that doesn't matter as long as it adequately heats the house.

When a boiler is sized to the heat load of a house, and on a high mass over radiated gravity system, the radiation is able to shed BTU's faster then the boiler can produce them. Therefore, the system will reach an equilibrium point between the water temp, the room temp and the boiler input. At this point, the boiler cannot possibly make the water any hotter until the room temp rises.

I did a gravity system this winter, properly sized conventional boiler (with protection valve) and it never reaches the high limit and shuts off. The thermostat turns the boiler on and it does not turn back off till the thermostat is satisfied. The water temp is what it is.

Gordy

You dropped a pipe size, and you have quite an assortment of fittings to make the connection which is into a t. Lots of developed pipe length in that short run. Which equals more head.

Gordy

When doing piping think like water, or even yourself walking through a hallway to get from point a to b. Would it take more effort to zigzag through a narrow shoulder scraping hallway or less effort to walk a straight hallway with elbow room to go same straight line distance.

maybemark

Gordy, I did drop a pipe size, and many said this is fine, after i bought all the fittings, you come and say you would have done it in 1 1/4".
I went ahead and put the circs, the dementions of what you said

maybemark

Gordy, so your telling me now, to tear all this out and use 1 1/43" copper, and don't make short pieces of copper to go from A-B. Is this what your saying?

maybemark

and as far as the temp on the boiler, is was at 100% for almost half the day to get to 127 degrees. it doesn't seem right to me

maybemark

the main piping for the heat and the water is pretty straight, the cold water and hot water is what makes alot of turns to fit it in

Paul48

Harvey...If you had done the setup and install of this boiler, we wouldn't be having this discussion. What would be "plug and play" to you, and the host of possible complications here are vastly different.

maybemark

so, gordy, what should I do?
while Carl and Kurt says 1" is fine,
there is some funky piping to that 3" main
I have to sets of mains that run thru my house,
what would you do, not use a tee, to get them together?
actually, the old boiler, was not much different in piping, but over 3 times the size in BTU's

maybemark

Paul, your a real help
I thought this wall is about helping others, not saying get a pro

Paul48

Mark....What's the supply pressure of the gas firing at 100%? Is there a dropoff from static to 100%?

maybemark

Paul, if I would understand what you mean, i would answer your question.
No, i'm not a pro
One thing I have to say, many people on this site have been a big help, your not one of them. if i don't understand something, they want to help, not throw it back in my face

Paul48

I'm sorry you feel that way Mark. I would gladly help you in any way I could. I am of the opinion that you have to be very careful when you get to the gas. Things done improperly with it can kill someone. I wasn't throwing it in your face.....You may have a problem with the boiler not firing correctly, and it may be insufficent gas. Testing the gas pressure is outlined in a couple different places in the manual. Good Luck and Best Wishes

maybemark

Paul
Harvey...If you had done the setup and install of this boiler, we wouldn't be having this discussion. What would be "plug and play" to you, and the host of possible complications here are vastly different.
this isn't throwing it in my face?

maybemark

I can't see that I would have insufficent gas going to it. U just looked downstairs at the gas pipe. Before i said I have about 13 feet of 1/2" pipe. I made a mistake on saying that, it's less than 7' of 1/2 coming from 1" pipe.
I should have plenty of gas

Paul48

I felt that Harvey might have been over simplifying things, a bit. There are quite a few things that Harvey, as a pro, would be sure of before he put any boiler into a house. For me to state that Harvey's approach and yours is probably very different, is just common sense. If that's throwing it in your face, then, yes, I guess I did.

maybemark

I think harvey wants to help me. i don't think you do