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Paul Fredricks

Paul Fredricks

Joined on March 22, 2006

Last Post on July 1, 2014

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@ August 9, 2012 1:20 PM in Why use different nozzle?

You could have a tech like we did. He put "W" nozzles in everything because delevan calls them "Universal" nozzles. Boy, did that create problems.


@ August 9, 2012 12:45 PM in mono flow tee systems

I was just reading through Dan's book "How Come". All of the info in the FAQ's is in there. Good info.


@ August 3, 2012 3:07 PM in coils not getting hot

I'm sure I won't know the answer, but whoever does will need a lot more info. Like: What is the make and model of the equipment, where do you see the alarm listed? What kind of control is it using. And more may be needed.


@ August 2, 2012 10:56 AM in Burnham Boiler V-14A-T parts?

those are called cleanouts. Where are you located?


@ July 19, 2012 9:03 AM in False Water Line or Gifford Loop needed?

I see in Dan's book where it says 4'. Seems excessive to me. Does anyone know why it has to be so high above the water line? I'd have to figure in most applications that would put it near the ceiling, and way into the A dimension.


@ July 18, 2012 2:41 PM in Storing copper fittings

We used to use the plastic milk crates with milk containers in them. You open up the top of the milk container all the way and wash it out. I can't remember if we cut off the top or folded it in on itself. A standard milk crate hold 9 of these, so we'd have one for 1/2", one for 3/4", etc. Worked well for installs. And they stack well too.


@ July 11, 2012 8:44 AM in weird one

Unit is running fine. I get the feeling it was an issue with the high side valve. No problems since.

Went last year

@ July 10, 2012 2:25 PM in Connecticut trade show

A decent show and lots of good food. And, of course, a talk by Dan. I will not make it this year as I will be behind the wheel, dragging the camper to OBX for 10 days of fun in the sun.

How much room....

@ July 9, 2012 3:46 PM in How much room....

... do you need between the top of the evaporator and the coil? The coils these days are pretty tall and I know we're all running into issues with height. I need a 4ton coil and I have 22 1/2" to the top of the plenum. The take offs come off the front and back of the plenum. What if we put the coil in sideways so each take off is looking at the side of the coil instead of the face?

Well, if my choices are....

@ July 3, 2012 2:44 PM in The AWESOME power of Mother Nature...

Use lots of chemicals, dump them into the atmosphere, and think that has no effect
Use as few chemicals as possible and try to have as little effect on the earth as possible, just in case it has an effect
I choose the latter, if we can't prove it one way or another.

weird one

@ June 29, 2012 7:30 AM in weird one

Went to a call with a tech the other day. Trane 2 1/2 ton, about 10 years old. Customer said that one never really worked right.Tech was getting weird pressures, tried to add a bit of refrigerant and the high side went to 350 (r-22). I started it up, reading 350 high, 22 low. Figured we'd start over, so we recovered the charge. Took 13 lbs out of a system whose factory charge was 4 lbs, 4 oz. Just a bit over charged.
Weighed the charge back in and started it up. Still strange pressures, 140 high, 20 low. And on start up the suction line startes freezing and then slowly warms.  Acting like a restriction, so I pump the unit down, climb up in the attic and pull the piston apart. All looks fine. Had my tech crack the high side valve for a second and that seemed fine. Put it back together, opened the valves, started it up, and everything is great. Pressures look good, temps are great!
All I can figure is that the high side valve was hanging up internally, or maybe the piston wasn't seated right. Running like a champ when we left.


@ June 26, 2012 8:21 AM in liquid line driers

I'd leave it in place and add one outside the unit. I think the factory ones are just for residual from manufacturing and not for real world use.

Of course, if it was a burn out you'd have to get rid of it.

Congrats, Johnny!

@ June 26, 2012 6:57 AM in Congratulations, Johnny White!

Very much deserved.

Thank you, Mr Head.

@ June 21, 2012 7:51 AM in Coverting from gravity hot water

Good info. The job is on delay till next month, so it will give me some time for the engineering.


@ June 19, 2012 10:44 AM in Coverting from gravity hot water

I haven't seen the job, but given it's 3" mains the head has to be pretty low.


@ June 19, 2012 9:56 AM in Coverting from gravity hot water

but the money isn't there. The oil boiler has an output of 180 MBH. Is the 0010 overkill? Would a 007, at 2/3 the flow rate of the 0010, be a better bet? The only thing I worry about is flow since this splits into two loops.
I appreciate the help guys. Haven't even seen a gravity system in a long time, much less done a conversion.


@ June 19, 2012 9:01 AM in Making move to vaporstat

on how much supply and return piping you have, size and length.

I use this to figure out what I need. It's a great resource:


@ June 19, 2012 8:12 AM in Coverting from gravity hot water

Then why use a circulator at all? Dan's book recommends a circulator like a B&G 100 series. There's a good amount of flow in those, though I can't seem to find a pump curve anywhere.


@ June 19, 2012 8:01 AM in Making move to vaporstat

Do you still have the original Richardson vent? If so it won't do enough venting for that system. We had a customer with a good sized Richardson, 4 zones. We calculated and added vents at the end of each main and return (the Richardson vent was already gone, but the existing vents were undersized). Helped the heat move about the system better and cut fuel costs about 10%.
If you do have the Richardson vent and want to get rid of it, you can definitely throw it my way. Love to have one for the shelf. :)

More info

@ June 19, 2012 7:53 AM in Coverting from gravity hot water

The system has 2 - 3" zone valves, but only one thermostat. The valves must be there to stop the flow when the tstat satisfies. It can't be zoned well because it's 2 stories and one valve does the left side of the house, the other the right.
In discussing this job more, we will probably combine the "zones", use a single 0010 w/ flow check to serve both, and use primary/secondary for the boiler connection. That will keep the boiler temp up and give a steady flow to the system. Not sure if reset is in the package or not, but we'll set the high limit down to 160°.
With primary/secondary, do we have to match the ciculators? Or is a 007 on the boiler and a 0010 on the system OK? 


@ June 19, 2012 7:17 AM in Coverting from gravity hot water

This is an oil job.

Hey Dan!

@ June 18, 2012 3:17 PM in Coverting from gravity hot water

Look what I found inside.
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