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Author Topic: Central Boiler 6048 installation.  (Read 13040 times)

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Offline Dave Shepard

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Central Boiler 6048 installation.
« on: December 23, 2013, 07:30:24 pm »
I just purchased a used 6048, and have a couple of questions regarding both the machine and the piping used for OWBs. I can't find a btu/hour rating for the 6048. I know they used to list this years ago, but they seem to be keeping it a secret these days. Does anybody know how many btu's I can expect to draw off of this size boiler an hour?

Second is the Pex tubing. Central offers their own ThermoPex tubing in 1" and 1.25" diameters, and PexFlex offers dual insulated tubing in a variety of sizes. Any advice and where to buy either would be appreciated. Thanks. (I'm sure I'll have more questions later)
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Offline bear_hunter

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Re: Central Boiler 6048 installation.
« Reply #1 on: December 23, 2013, 09:38:20 pm »
I just installed the same set-up this fall. Find your local dealer, he should have the Thermopex in stock. It is expensive but it is definitely worth it. I used 1" on mine with a 145,000 btu heat exchanger. Our house is a little over 2500 sq.ft. It is insulated pretty decent and I have no trouble keeping it 70 degrees.

Offline doctorb

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Re: Central Boiler 6048 installation.
« Reply #2 on: December 23, 2013, 09:58:47 pm »
The question is not what diameter pex you need, the question is to estimate the amount of energy you need to deliver to your house.  First, what is the distance going to be from the house to the OWB?  the longer the distance, the larger diameter Pex you should use.  My run is long, about 300', and I used 1.25".  I have a large house and need the ability to move the heat quickly.
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Offline Holmes

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Re: Central Boiler 6048 installation.
« Reply #3 on: December 23, 2013, 10:26:23 pm »
 You should use insulated pex tubing. Uninsulated piping in the ground could cost you a few cords of wasted heat every year.    Basically the more the pex is insulated the less heat is wasted.
Think like a farmer.

Offline albirk

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Re: Central Boiler 6048 installation.
« Reply #4 on: December 24, 2013, 05:18:03 am »
My 5648 = maximum Btu...500,000 as someone else said find a dealer to get the thermo pex it is pricy but worth the money it is $14 PLUS A FOOT

Offline coxy

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Re: Central Boiler 6048 installation.
« Reply #5 on: December 24, 2013, 07:20:40 am »
we put the thermo pex on top of the ground for my dad 4years ago it was only going to be temp but you know how that goes   the snow never melts off it so why do the digging :D :D

Offline Dave Shepard

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Re: Central Boiler 6048 installation.
« Reply #6 on: December 26, 2013, 06:43:13 pm »
For now, the boiler will be about 30 feet from my garage, but may get moved later if I have the money for more pipe. The two pipes I mentioned are both two pipes inside a larger pipe with insulation around them.

I don't know the exact requirements of my house, but I don't want to make the mistake of running too small of a line. A friend did that with his 6048. It came with a piece of 3/4" line and he can't move enough to keep his wind tunnel log cabin warm. I also need to heat the two car garage.

What kind of stove pipe does a Central use? It looks like standard 8" insulated pipe would work, which is handy, as I have a T and 3 sections of pipe that I won't need in the garage if I install an outside boiler.
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Offline Dave Shepard

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Re: Central Boiler 6048 installation.
« Reply #7 on: December 26, 2013, 07:03:54 pm »
And another question. I am going to use a heat exchanger in my basement to hook the OWB to the oil boiler. I plan on running just water in the OWB, no anti-freeze. Is this typical, and are there additives other than AF to put in the OWB water?
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Offline bear_hunter

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Re: Central Boiler 6048 installation.
« Reply #8 on: December 26, 2013, 07:08:45 pm »
There is a corrosion inhibitor that you need to use in the water in the boiler.

Offline Dave Shepard

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Re: Central Boiler 6048 installation.
« Reply #9 on: December 26, 2013, 07:11:20 pm »
That's what I thought. Is that from Central only? I think I might be going to the Central dealer in the next week or so.
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Offline thecfarm

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Re: Central Boiler 6048 installation.
« Reply #10 on: December 26, 2013, 08:32:21 pm »
I did not install mine. This is how the back of my Heatmor looks. I could have 3 zones on mine. I think I have the 1 inch lines,inside is .
 

 

There are a view more pictures in my gallery,outdoor furnace is the album name.
Model 6020-20hp Manual Thomas bandsaw,TC40A 4wd 40 hp New Holland tractor, 450 Norse Winch, Heatmor 400 OWB,YCC 1978-79

Offline Dave Shepard

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Re: Central Boiler 6048 installation.
« Reply #11 on: January 15, 2014, 07:41:16 pm »
Finally got a chance to go and get my boiler. Now I just need to figure out how I'm going to get it off the truck. :D

Does anybody know of a chart that lists how many btus per hour a given size pipe can move at a specified gpm and temperature?

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Offline UN Hooker

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Re: Central Boiler 6048 installation.
« Reply #12 on: January 15, 2014, 10:11:48 pm »
Dave
  Don't assume the 8" pipes you have will fit the CB.  The ones I had, the ID was the same but the OD was 1/4" smaller. I had to do some modifications to make them work.
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Offline Holmes

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Re: Central Boiler 6048 installation.
« Reply #13 on: January 15, 2014, 11:16:58 pm »
  Taco has flow charts. They are used to size the pump to deliver the required gpm needed based on pipe size and head {friction loss}. A 11/4" pipe with a flow of 16 gpm will be 160,000 btu's, a 11/2" pipe at 24gpm is 240,000 btu's.  Head is figured on overall length of pipe and its friction loss , it has nothing to do with height.
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Re: Central Boiler 6048 installation.
« Reply #14 on: January 28, 2014, 08:15:02 pm »
I got my heat exchanger today. It's a little big, but that's better than a little too small. Best of all, it's free. :) Going to start getting my fittings list together tomorrow, then I'm going to get all my parts and pipe and start installing.
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Offline coxy

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Re: Central Boiler 6048 installation.
« Reply #15 on: January 28, 2014, 09:41:36 pm »
I got my heat exchanger today. It's a little big, but that's better than a little too small. Best of all, it's free. :) Going to start getting my fittings list together tomorrow, then I'm going to get all my parts and pipe and start installing.
now comes the hard part  well not so much these days when I did mine they had no easy fittings these shark bites are the best they were made for dummys  like me :D :D

Offline WmFritz

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Re: Central Boiler 6048 installation.
« Reply #16 on: January 28, 2014, 09:49:46 pm »
Hurry and fire that thing up, Dave. There's still plenty of winter left to save some of that oil money.  splitwood_smiley
~Bill

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Re: Central Boiler 6048 installation.
« Reply #17 on: January 29, 2014, 02:58:00 pm »
So, next question. I'm buying 1" ThermoPEX from the Central dealer to go from the boiler to the heat exchanger. The fittings on the boiler are all 3/4" pipe thread, but the previous installation was also 1" PEX. Is this momentary restriction ok? The manual doesn't mention this specifically, but they do have two different parts lists, one for 3/4" fittings and one for 1 1/4" fittings, and they only mention using 1" T PEX, or 1 1/4" T PEX pipe. I know that 1" PEX is actually more like 7/8" ID, so I"m thinking the momentary restriction is going to be ok.

Here, you can see the original installation with a piece of 1" PEX pipe on the return.

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Offline Holmes

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Re: Central Boiler 6048 installation.
« Reply #18 on: January 29, 2014, 03:06:47 pm »
 If you think you need all the btu's that boiler will make then I would increase those 3/4" pipes to 1" or 11/4".  I look at this as a professional and it would be wrong for me to undersize the piping and make it so you can not get all the heat from your boiler.    If the tappings are 3/4" in the boiler then leave the 3/4 connections.
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Offline petefrom bearswamp

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Re: Central Boiler 6048 installation.
« Reply #19 on: January 29, 2014, 03:59:23 pm »
Dave,
I think from my physics class many years ago Bernuli's principal I think rules that a very short restriction will not affect flow as speed thru the restriction increases and volume is maintained.
Perhaps a hydraulic engineer will chime in and either confirm this or tell me I am full of it.
DoctorB How much heat loss do you have with your long run?
My initial installation was 125 feet and I lost 9 degrees.
This was with the insulated pipe furnished by the Taylor furmace folks.
It was not buried very deep and the snow melted where the line was.
I only used this system for 3 winters as I kept warm carrying wood to the Taylor not to mention putting the years wood up.
Pete

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