HRM wallstar???

[tridimnaw]

Ok I'm after all your advice on this one! I was called to one of the above boilers that had locked out! The clear oil line was full of air, I bled it through and left it run for 10 mins. It slowly filled with air again! I've had no experience of these boilers so I called HRM and they said it was the non return fire valve not functioning rite! So I order done and change it, but after a week the same problem persists! It's the only wall star in our area! I can't see as it's a hole in the copper line cause there would surly be an oil leak! Any advice pls

 

[Killy Bing]

How many fittings on the line?

have you made sure everything is nipped up tight post clear hose?

 

[tridimnaw]

Just the non return valve
ye I've made sure it's all nipped up, it's baffling me, the filters are all clear!
Next step I think is to install a tiger loop to it, they say it voids the warranty but that ran out years ago! Why do they say it voids the warranty? Would it not be like any other boiler where the burners higher than the tank???

 

[Killy Bing]

I think its because they are so susceptible to air.

although it would likely solve the issue, i'll put money on it just making the problem.

drain the line and pressure test it?

Hmm, highly remote chance, but the solenoid could be letting by, letting some oil out of the nozzle then letting air in.

what state is the nozzle in?

 

[josh]

Start with the obvious, got enough oil for a start?

 

[tridimnaw]

Ye there's over half a tank there

so u don't think the tiger loop would do it? I was surprised to see a boiler like this without one! But then again I'd never heard of HRM before!

The nozzle is also new
pump filter is spotless
i can't see it being the coil as u can see the bubbles coming up from the oil line valve

 

[Dotty]

If I remember correctly it's normal for that oil line to be full of air, one of the guys more familiar with these will be along shortly.

 

[josh]

These boilers don't need tiger loops as the oil pump is strong enough to pull it through.
Fitted quite a few of them and they are generally in my experience a good boiler,
very easy to fit other than the bit of chopping!

 

[kimbo]

If you can see bubbles coming into the oil line one of the joints is letting air in. I have had the crimp on the ool line let air in as well. Also the inline filtet on the oil line the joins let air in sometimes as well

 

[Dotty]

http://www.ukplumbersforums.co.uk/oil-solid-fuel-forum/57879-wallstar-12-15-bleed-point.html

 

[Killy Bing]

If I remember correctly it's normal for that oil line to be full of air, one of the guys more familiar with these will be along shortly.

Ive just sat there for 10 minutes and bled the air out, pretty sure thats the reason for the clear hose.

when you to back check the nozzle, if its oil stained on the bottom then my theory might have it!
however unlikely...

 

[tridimnaw]

Ye I assumed that's why the line was clear

thats the bleed point I've been using and the oil pressure is perfect on it

why do some boilers recommend tiger loops if the burners are higher than the oil tank??

 

[Dotty]

Ye I assumed that's why the line was clear

thats the bleed point I've been using and the oil pressure is perfect on it

why do some boilers recommend tiger loops if the burners are higher than the oil tank??

Reduces the stress on the oil pump.

 

[tridimnaw]

So if I was to cut the valve out and replace with a tiger loop that would not cure my problem?

 

[Dannypipe]

In my opinion they are great boilers.

I'd check the obvious, the eye, check the oil line is running ok, check the pump pressure is correct and the nozzle is OK. Check the electrodes, etc etc.

 

[tridimnaw]

I'm not saying they are rubbish I'm sure their good, I'm convinced it's got something to do with the non return valve as that's the side the air is coming from, I primed the valve and it slowed down but it's still getting air from somewhere between the valve and the tank

 

[Killy Bing]

I'm not saying they are rubbish I'm sure their good, I'm convinced it's got something to do with the non return valve as that's the side the air is coming from, I primed the valve and it slowed down but it's still getting air from somewhere between the valve and the tank

Pressure test the line....

 

[Roger Welton]

In my experience if its not the check valve its a small leak on the oil line downstream, doesn't take much to loose the vacuum.

 

[MarkOil]

I love the wallstars, see lots of them 🙂
So....... There will always be air in the line, sometimes a little, sometimes a lot, every install is different.
Are you 100% all filters firevalves and everything is running clear?
Tank valve especially, because the next easy place to pull from is the sightube.
Is the oil feed in 10mm or 8mm? any 15mm needs to be taken out!
Tigerloops are 100% not needed.
HRM boilers do not like 45' nozzles.
Never believe the air setting dial as it tends to skip numbers.
If you seen a continuous stream of bubbles coming into the clear tube, then it is pulling in from somewhere, put a can of oil on the floor, and temp feed up to boiler, then join to clear hose. if boiler runs fine. your prob is in your feed. If it still locks out, you got burner issues.
HT lead in front of PE cell?

 

[tridimnaw]

I've checked the burner over, I had to strip the air adjuster back and re set it so the numbers lined up with what was actually being let through!!
Test will be my next step! It's getting annoying now tbh! It's been my most testing problem yet!
Thanks for all the advice so far

 

[kimbo]

I have fitted a few of these and they seem to be trouble free compared with some other makes. The installation manual says that it is usual to have air in the oil line, from what you describe it is all air and no oil. If it is locking out because there is no oil in the oil line then it is nothing to do with air settings etc, if you see a steady stream of air coming into the oil line you have a dodgy joint, the same would apply if you had a tigerloop. If it is a dodgy joint the oil line will lose oil overnight as the level drops back.

 

[Killy Bing]

I like hrm.

changing them out solo....not so much!!

 

[WHPES]

Pressure test the complete line with the usual Rothenberger / equivalent test pump. You will see where the oil seeps through under positive pressure. Will save loads of time messing about, trying this, trying that etc.

The usual points are lever valves or the old style wheel fire valves letting air in when the seals are worn out.

 

[Bunker]

If I remember correctly it's normal for that oil line to be full of air, one of the guys more familiar with these will be along shortly.

I remember being told that there is usually a bubble in the top of the clear flex. As mentioned, why make it clear tho? 🙂

tridimnaw[/COLOR]]i can't see it being the coil as u can see the bubbles coming up from the oil line valve

Yep, theres your answer surely!!