burying oil line

brucewo1b

check valve, for which he should have no reason to, then it should expand back into the tank.

tom_49

We are doing a new house that will have in-slab heating in basement living area. The boiler will be located in center of house for venting into chimney and oil tank will be located in mech. room ( 20 ft. away ).

We will be running the oil line in conduit from tank to boiler in the slab.

What do you guys think about doing this? I think the boiler will like the warmed oil.

Thoughts?


Thanks, Tom

Ken_40

Nyet!

Stay away from conduit. The galvanized coating contains zinc, which in the presence of moisture, will create a rather corrosive relationship. Slip the copper fuel line tubing through a piece of radiant tubing instead. There should be a scrap long enough to make the trip.

They also make a plastic coated copper fuel line that would work as well, maybe better?

I would not hestitate to use a scrap of rubber or PEX tubing for the tubing protector/coating.

tom_49

Ken,

I didnt actually mean"conduit" as in electrical tubing or piping. Like you suggested, I am probably going to sleeve it thru a piece of pex.

What do you think about the oil line being buried in the slab in regards to temperatures?

Ken_40

# 2 fuel oil

is totally stable in the temperature range you might encounter. Hell, I've seen the tubing run in 170F slabs for 50 years without any adversity.

I wouldn't be a bit surprised if the slight warming aided combustion efficiency.

No problem I can think of.

John@Reliable_14

What if.....................

the copper oil line leaks and fills the pex, is pex rated for oil? My vote is for an overhead line = no worries

psd_3

Potential of vacuum issues and air in lines with overhead lines ...

What does code say about buried oil lines?
If ok by code ... then using a coated oil line in an oil rated conduit = double insurance!

brucewo1b

Potential of vacuum issues

Its called a Tigerloop, I still prefer coated copper in conduit ie Pex or HDPE Plastic tubing

Techman

hvac64

What will you do if the oil line has to be replaced in the future?I have tried to sleeve 3/8 od copper(for AC )inside 1/2 id and 5/8 id plastic tubing,what a pain in the "dupa".I put in 3/4 id PVC and the pull was easier.And the copper line can be repulled when ever necessary. Would this work in a radiant floor ?

brucewo1b

I would think it could

be laid at the bottom just fine and with 3/4 you can attach a flare coupling and pull the old line and the new through at the same time.

old oil man

oil lines

When ever we "sleeve" our oil lines we shoot a small amout of wire lube in the end of the "conduit" (usually pex-al-pex tubing). Slides right through with great ease.

bob young

leak in slab

why bury a line that you don't have to ?? what if it fails ? is it worth it ? plan ahead when possible. remember murphy's law

ed wallace

tiger loop comment

tiger loop will only mask the problem with an overhead line recently went on a call new tank new overhead line with tigerloop burner was hesitating found an air leak got rid of hesitation

brucewo1b

Ed

I agree that an Tigerloop will mask a air leak in an overhead line but it also is great for hydrogen bubbles that comes out of the oil at the pump and also acts as an air problem.

tom_49

buried oil line

Guys,

Thanks for the responses. Ive been away for a couple of days and just checked back on the Wall.

We will be burying the line ( coated ) in 3/4 ent, which is blue plastic electrical tubing.

Im not to worried about the line breaking in the tubing, we'll be installing an OSV vave and if it need to be replaced someday it should pull easy thru a 3/4 ID pipe.

My main concern was with the temp of the slab, I agree w/ Ken, I think it will run better w/ warmed oil.

Thanks, Tom

Jed_2

Well

You simply, as any good Supplier would recommend, seal the ends with Silicone Sealant.

Jed

gman_4

how about when the oil expands ,will it have a place to go!