Oil Burners and Tiger Loops
Jon Symonds
Tiger Loop. I assume that one has to fill all the pipes up first, so I
fill up the feed pipe from the tank, and then fill up the tiger loop and
pump pipes by pouring oil into the inlet of the pump, which also fills the
tiger loop. But when I start the pump, it just draws oil from the tiger
loop reservoir and then stops. So it seems as if it is not drawing from
the tank. One reason given for this is that the "bypass-plug" might not be
fitted in the pump. So my question is, what is the bypass plug, what does
it do, where is it and how do I fit it? Can anyone think of anything else
I might be doing wrong?
With many thanks from an extremely frustrated person!
Jon Symonds
--
***********************************************************************
J.P.R. Symonds / Darwin College
University of Cambridge, / Cambridge
Dept. of Chemistry, Lensfield Rd., / CB3 9EU
Richard Gethin
<jp...@cus.cam.ac.uk> writes
>I've just installed a new oil burner above the level of the tank, with a
>Tiger Loop. I assume that one has to fill all the pipes up first, so I
>fill up the feed pipe from the tank, and then fill up the tiger loop and
>pump pipes by pouring oil into the inlet of the pump, which also fills the
>tiger loop. But when I start the pump, it just draws oil from the tiger
>loop reservoir and then stops. So it seems as if it is not drawing from
>the tank. One reason given for this is that the "bypass-plug" might not be
>fitted in the pump. So my question is, what is the bypass plug, what does
>it do, where is it and how do I fit it? Can anyone think of anything else
>I might be doing wrong?
>
>With many thanks from an extremely frustrated person!
>
>Jon Symonds
>
tiger loop will draw up the oil from the tank. The bypass plug is a
little screw that you put into one of the galleries in the pump after
removing the relevant cap screw. Usually there is a diagram with the
pump (and the screw) to show you what's what. It's vital that you fit
the plug. Without it the tiger loop will not work.
BTW, do you know that the tiger loop is meant to be fitted outside
because they can vent to atmosphere under certain conditions?
--
Rich
Pete Mahood
>I've just installed a new oil burner above the level of the tank, with a
>Tiger Loop. I assume that one has to fill all the pipes up first, so I
>fill up the feed pipe from the tank, and then fill up the tiger loop and
>pump pipes by pouring oil into the inlet of the pump, which also fills the
>tiger loop. But when I start the pump, it just draws oil from the tiger
>loop reservoir and then stops. So it seems as if it is not drawing from
>the tank. One reason given for this is that the "bypass-plug" might not be
>fitted in the pump. So my question is, what is the bypass plug, what does
>it do, where is it and how do I fit it? Can anyone think of anything else
>I might be doing wrong?
>
>With many thanks from an extremely frustrated person!
>
>Jon Symonds
What kind of boiler/burner do you have ?
I may be able to help with a diagram.
Regards
Pete
Jon Symonds
The following is written on the burner:
Electro International
Tilly
Electro-oil AB
Norrkoping, Sweden
This is an approximate ASCII picture of when the pump looks like end on:
to jet blanking plug
_____^__________""__
| |
| |<- Marked with in arrow (currently used to
| Motor is | feed)
| on other side |
| |
| |-> Marked with out arrow (currently used to
| | return)
|__________________|
"" ""
looks like a bleed nipple
Allen screw
(adjusts oil rate?)
Many thanks,
John
Jon Symonds <jp...@cus.cam.ac.uk> wrote in message
news:84voe0$8fl$1...@pegasus.csx.cam.ac.uk...
> In article <38746c8b...@news.u-net.com>,
> Pete Mahood <Pe...@kirrie.u-net.com> wrote:
> >On 4 Jan 2000 11:48:46 GMT, jp...@cus.cam.ac.uk (Jon Symonds) wrote:
> >
> >>I've just installed a new oil burner above the level of the tank,
How much above and how far away from the tank is your burner?
Your art is commendable but unfortunately not sufficiently explanatory to
identify the particular pump. Can you see the nameplate or any details on
the pump? Chances are its going to be a Danfoss BFP21L3 or a Delta pump. If
its a Danfoss (the best) and you look at it label end on with the solenoid
on top and oil supply and return pipes at the bottom the oil inlet is on
the bottom right. On the right hand side of the pump are two ports, one at
the top which is a delivery/vent point and one in the middle which covers
the bypass screw point. The screw is usually attached to the pump in a
small plastic bag when new. Other Danfoss pumps are around or it might be
one of the competitors.
HTH
--
Please note antispam measures - do not hit reply
Horse sense is what horses have that makes them not bet on people - W.C.
Fields
Regards,
John
Jon Symonds
John <jo...@ASboilerdoc.karoo.co.uk> wrote:
>> >
>> >>I've just installed a new oil burner above the level of the tank,
>
>How much above and how far away from the tank is your burner?
About 4 feet above, and about 3 feet away from (i.e. not very far!)
>
>Your art is commendable but unfortunately not sufficiently explanatory to
>identify the particular pump. Can you see the nameplate or any details on
>the pump? Chances are its going to be a Danfoss BFP21L3 or a Delta pump. If
I've called my Dad (who'se system it is) and he has given the the correct
information now, it is a Danfoss MSLAO 32 (0713111), which I suspect is
rather old. The pump is in good condition, but just hasn't been used for
years which is why I suspect we have no bypass plug. If anyone knows of
where we could get one (our local supplier sort of laughed), or indeed in
exchange for a fiver (or whatever) anyone has one, it would be much
appreciated.
Thanks for all your help anyway, at least I now know how to solve the
problem!
Jon
John
> In article <850ci1$jit$1...@supernews.com>,
> John <jo...@ASboilerdoc.karoo.co.uk> wrote:
> >> >
> >> >>I've just installed a new oil burner above the level of the tank,
> >
> >How much above and how far away from the tank is your burner?
>
> About 4 feet above, and about 3 feet away from (i.e. not very far!)
I wouldn't have laid out that kind of money in those circumstances - simply
run the return pipe back to the tank
>
> >
> >Your art is commendable but unfortunately not sufficiently explanatory
to
> >identify the particular pump. Can you see the nameplate or any details
on
> >the pump? Chances are its going to be a Danfoss BFP21L3 or a Delta pump.
If
>
> I've called my Dad (who'se system it is) and he has given the the correct
> information now, it is a Danfoss MSLAO 32 (0713111), which I suspect is
> rather old.
Yup! - been superceded twice first by the MS11 L3 then after a few years by
the BFP 21 L3
The pump is in good condition, but just hasn't been used for
> years which is why I suspect we have no bypass plug. If anyone knows of
> where we could get one (our local supplier sort of laughed), or indeed in
> exchange for a fiver (or whatever) anyone has one, it would be much
> appreciated.
If memory serves correctly the bypass port is inside the oil pipe
connections on the pump but I can't recall whether it was the inlet or the
outlet. All you need to do is find a suitable sized screw (possibly about 2
or 3 BA?) and screw it into the port to close it off.
Bear in mind it was the MSLA range which started the run for an
indeterminate time then stop delivering fuel syndrome mentioned in another
thread here recently.
>
Jon Symonds
up to a fully automatically heated house at the weekend for the first time
ever. And all down to a little grub screw....
Cheers
Jon Symonds