150,000 on 3/4\" pipe

Steve Ebels_3

I've corrected more than one like that. When you're dealing with flue pressures that are nearly positive, as with a power type burner, oil or gas, the method in the pic is wrong.

Mellow_2

Larger Please!!!!

went to this call the other day.....The homeowner called a plumber to install this boiler and remove the old wood /oil boiler he had. They agreed on this new boiler and they both wanted it one size bigger.....(one size too big and one size too big =2/3 too big)....They WERE happy untill the next day............. the boiler shut down on safety ......so....... they tryed changing the cad cell control three differant times. that did not help........so....the boiler shut down...... the plumber told him, "the oil could be dirty and he should change the oil tank and oil line"....so he did.........and the boiler shut down.........Everything is new now.......and the boiler shuts down......
When we get there we find the boiler needs a small adjustment to the burner and the cad cell control is a carlin REV B...I have been told they were recalled so we change the control....and the boiler runs. This unit is over 150,000 btu and only allows 40,000 out the 3/4" pipe. This is like a monster caged in the basement. This boiler was made for something more.....or a bigger house.

Firedragon_4

Just a point of note,

the Carlin Rev. B controls were never recalled and they are not even close to ever being. Thousands in use and most were probably pulled due to flame problems. The whole B Revision thing is another myth or 'urban legend', not a FACT!

BTW, the installation of the regulator in a tee like that is correct for atmospheric gas, not for a powerburner and a draft problem could have been all that was wrong with the flame.

http://www.fieldcontrols.com/installeddraftcontrols.html

Great quote from one of the 'dead men', "90-95% of all flame and combustion problems are directly associated with draft".

paul sr

Mellow_2

I agree

the draft regulator should be moved.... I would have never put it there. the draft here seems to be correct at the times of reset or right after...... I had this reset twice before I arived. The info I had on the control was from a burnham rep .....I went to see the new opus boiler and he past on the info to us about REV b controls.... This can be the wrong info but the cust. and I do not want to take that chance.......Thanks for the feed back

Firedragon_4

My pleasure and

sorry to see the spread of rumors by those that should know better.

Now, go get that regulator moved :-) LOL!

Steamhead (in transit)

The only way that piping setup would work

is if the relays were set up so that only one zone could run at a time. If they are set up that way, the boiler would be even more oversized!

And of course those circs need to be moved to the supply side. Pumping Away is the only way!

Jed_2

Looks like M/H on that

I might be opening myself up to a sharper mind, but, what Rev. B control are we talking about? If it's the 60200 control for DV, my CCT Rep pulled ALL those controls from my inventory 2 years ago, and replaced them with Rec.C, at no charge. No re-call notice that I can remember, but a CCT Engineeer was on a service call one time, and saw for himself the anomaly in the control's programming.

Now, what about "bottlenecking".

Jed

Firedragon_4

There is no

bottlenecking issue Jed.

CCT covered the bases and played it safe, however there are thousands of Rev. B controls out there that are proving there was nothing wrong with the 'B'controls.

There was an issue and it affected mostly draft issues, you can read this and interpolate the problem 'mellow' was having.

http://www.carlincombustion.com/techbulletin/techbulletin013.html

Maine Ken

FD, why did my problems go away at the same time I replaced the rev b's at the urging of a CCT rep???? No other changes whatsoever. I am confused as the companies employee told me that the controls were bad (some). All of my stock controls were replaced by the same rep.

Maine Ken

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

Firedragon_4

Long story, but

for them it was easier to switch them out then the alternatives.

The thing is if the control is out there and has been working for two years then there is NO need to replace it. What bothered me was Mellow saying he tried three of them.

I'd defend the Junque Control Co. if someone told me they tried three controls. Is it possible, oh sure, but probable, unh-unh!

I'm seeing too many so-called control problems fixed by going back to intermittent ignition, trying another control, etc., etc., etc. Turns out in the end it's a draft problem.

Everybody thinks they know Combustion cold, that's why their customers are, FACT!

Maine Ken

I do have some still out there without problems.

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

Firedragon_4

Amen brother!

Jed_2

George

I wasn't clear. I was refering to the piping in the picture, 3/4" supply riser, and 3 3/4" zones, and the oversized boiler.

I will read that bulletin, thanks.

Jed

Firedragon_4

No problem Jed,

ya gotta love the Internet.