How difficult to replace a nozzle on a modern (ish) Oil Boiler

[cpvh]

Hi All,

Apologies for not being around much, life keeps getting in the way!

We have the builders in (the job is too big for me, calls for experience I don't have, and time I don't have). A couple of days ago, he severed the o il supply pipe while breaking up and removing a patio.......

He has done a temporary repair, and it seems fine.......

However, there was a lot of air in the Line.

The boiler (the original Wallstar conventional (Non Combi)) boiler is mount ed approx. 3 -4 feet higher than the current level of oil in the tank, and it normally pulls through the oil just fine (no need for a tiger loop).

I THOUGHT that I could just keep pressing in the orange light on the lock o ut relay thingy while it sucked the oil with air pockets through and once i t got all the air out of the way it would be fine. This approach appeared to work. Then after a while we noticed the boiler wouldn't fire, and no am ount of pressing the relay would entice it to.

I couldn't find the instruction booklet, but found something on Wallstar's web site which said......... If you pull air through it, you will have t o replace the nozzle. Now there is what I presume is a nozzle just inside the casing (I assume it is an old but functional one left there by the serv ice engineer.

Questions.........

How SHOULD I have got the air out of the system (or was that the correct/on ly way)?

How easy is it to replace a nozzle? (and how do I do it)?

Sorry, I don't have details of the burner to hand, it's small ish, the left hand side of what you can see is silver and looks like (but probably isn't ) an electric motor, and the right hand side is red. The whole lot (of wha t you can see from outside the house (the boiler sits in/through the wall) is about 9" square and goes back about 8 inches.

TIA

Chris

[Michael Chare]

Perhaps turn off the oil and power supplies first!

To replace the nozzle, you first need to remove the burner from the boiler. Hope fully there is something to losen that is near where the burner goes into boiler. The burner should still be attached by an electrical cable and a flexible oil supply pipe. There is probably a shroud round the jet which you can then remove. You may need to losen the electrodes, but they must be put back in the correct place which you will find in the boiler installation manual which you can likely download.

Unscrew the burner using a spanner whilst supporting whatever it is attached to with another spanner, as you don't want to break the mounting. The jet size will be marked on the jet and you should be able to buy another one exactly the same.

However to solve your problem, I would make sure that the tank is full.

Do you have a Riello burner RDB, they have red plastic cases. If so you may also be able to download the manual for it.

[cpvh]

e I don't have, and time I don't have). A couple of days ago, he severed t he oil supply pipe while breaking up and removing a patio.......

ounted approx. 3 -4 feet higher than the current level of oil in the tank, and it normally pulls through the oil just fine (no need for a tiger loop).

ck out relay thingy while it sucked the oil with air pockets through and on ce it got all the air out of the way it would be fine. This approach appea red to work. Then after a while we noticed the boiler wouldn't fire, and n o amount of pressing the relay would entice it to.

r's web site which said......... If you pull air through it, you will ha ve to replace the nozzle. Now there is what I presume is a nozzle just ins ide the casing (I assume it is an old but functional one left there by the service engineer.

left hand side of what you can see is silver and looks like (but probably i sn't) an electric motor, and the right hand side is red. The whole lot (of what you can see from outside the house (the boiler sits in/through the wa ll) is about 9" square and goes back about 8 inches.

Thanks Michael,

The tank is going to be moved on Monday, so we've told the builder we'll ju st manage without till Tuesday when we can get the professionals in to re-c ommission the boiler.

Cheers

Chris

[Michael Chare]

In that case make sure that who ever comes services the boiler properly. Oil boilers need regular servicing as they get dirty inside, the jets wear and then let in more oil which wont get burnt properly unless the air is also increased, and any filters in the oil supply should be changed before they clog up.

[chrispvholmes]

nce I don't have, and time I don't have). A couple of days ago, he severed the oil supply pipe while breaking up and removing a patio.......

mounted approx. 3 -4 feet higher than the current level of oil in the tank , and it normally pulls through the oil just fine (no need for a tiger loop ).

lock out relay thingy while it sucked the oil with air pockets through and once it got all the air out of the way it would be fine. This approach app eared to work. Then after a while we noticed the boiler wouldn't fire, and no amount of pressing the relay would entice it to.

tar's web site which said......... If you pull air through it, you will have to replace the nozzle. Now there is what I presume is a nozzle just i nside the casing (I assume it is an old but functional one left there by th e service engineer.

ect/only way)?

e left hand side of what you can see is silver and looks like (but probably isn't) an electric motor, and the right hand side is red. The whole lot ( of what you can see from outside the house (the boiler sits in/through the wall) is about 9" square and goes back about 8 inches.

l just manage without till Tuesday when we can get the professionals in to re-commission the boiler.

Thanks Michael,

The Professionals in question service it each year, and we've not had any p roblems in normal use. They were on site at 9:00 this morning, and I assum e it's all up and running (as I've not had a call to say otherwise).