Hello,

I need to refill inhibitor again as there was quite a bad leak in the
system, I have bought Sentinel X100 concentrate (BTW it was quite
cheap at Homebase, Twelve forty nine only). However the instructions
differ slightly to the Fernox product I used previously.

The instructions state that you must depressurise the system if it is
a sealed system, I suppose this is to prevent the inhibitor spitting
back out which was rather messy with the Fernox product.
Can I depressurise by bleeding the water out of a radiator until the
pressure is 0.0 bar?. I don't mind doing that.

wrote:


I need to refill inhibitor again as there was quite a bad leak in the
system, I have bought Sentinel X100 concentrate (BTW it was quite
cheap at Homebase, Twelve forty nine only). However the instructions
differ slightly to the Fernox product I used previously.

The instructions state that you must depressurise the system if it is
a sealed system, I suppose this is to prevent the inhibitor spitting
back out which was rather messy with the Fernox product.
Can I depressurise by bleeding the water out of a radiator until the
pressure is 0.0 bar?. I don't mind doing that.

Just turn off one radiator at both taps, then drain off a litre or 2
from that radiator by undoing the tail nut near the tap.
Remove either the bleed valve or blind plug at the top of the rad, then
pour the inhibitor into the rad. Fill it up with water as much as you
can then, put the plug back in, turn on the rad valves,bleed it, then
check the pressure at the boiler, it should have only gone down by a
tiny amount.
If you have not got the screw-in plug/bleed valves on your rads, then
you'll have to drain it down a lot more to pour the inhib into the
pipes.
Alan.
--
To reply by e-mail, change the ' + ' to 'plus'.

On 21 Nov, 21:55, (A.Lee) wrote:
wrote:
I need to refill inhibitor again as there was quite a bad leak in the
system, I have bought Sentinel X100 concentrate (BTW it was quite
cheap at Homebase, Twelve forty nine only). However the instructions
differ slightly to the Fernox product I used previously.

The instructions state that you must depressurise the system if it is
a sealed system, I suppose this is to prevent the inhibitor spitting
back out which was rather messy with the Fernox product.
Can I depressurise by bleeding the water out of a radiator until the
pressure is 0.0 bar?. I don't mind doing that.

Just turn off one radiator at both taps, then drain off a litre or 2
from that radiator by undoing the tail nut near the tap.
Remove either the bleed valve or blind plug at the top of the rad, then
pour the inhibitor into the rad. Fill it up with water as much as you
can then, put the plug back in, turn on the rad valves,bleed it, then
check the pressure at the boiler, it should have only gone down by a
tiny amount.
If you have not got the screw-in plug/bleed valves on your rads, then
you'll have to drain it down a lot more to pour the inhib into the
pipes.
Alan.
--
To reply by e-mail, change the ' + ' to 'plus'.

No, this is a concentrate product which is injected by a mastic gun.

http://www.sentinel-solutions.net/en...00/concentrate

wrote:

On 21 Nov, 21:55, (A.Lee) wrote:
wrote:
I need to refill inhibitor again as there was quite a bad leak in the
system, I have bought Sentinel X100 concentrate (BTW it was quite
cheap at Homebase, Twelve forty nine only). However the instructions
differ slightly to the Fernox product I used previously.

The instructions state that you must depressurise the system if it is
a sealed system,
Just turn off one radiator at both taps, then drain off a litre or 2
from that radiator by undoing the tail nut near the tap.
Remove either the bleed valve or blind plug at the top of the rad, then
pour the inhibitor into the rad. Fill it up with water as much as you
can then, put the plug back in, turn on the rad valves,bleed it, then
check the pressure at the boiler, it should have only gone down by a
tiny amount.


No, this is a concentrate product which is injected by a mastic gun.
http://www.sentinel-solutions.net/en...00/concentrate

It is just the same method, dont 'pour' it in, instead, inject it into
the rad.
Alan.
--
To reply by e-mail, change the ' + ' to 'plus'.

wrote in message
...
On 21 Nov, 21:55, (A.Lee) wrote:
wrote:
I need to refill inhibitor again as there was quite a bad leak in the
system, I have bought Sentinel X100 concentrate (BTW it was quite
cheap at Homebase, Twelve forty nine only). However the instructions
differ slightly to the Fernox product I used previously.

The instructions state that you must depressurise the system if it is
a sealed system, I suppose this is to prevent the inhibitor spitting
back out which was rather messy with the Fernox product.
Can I depressurise by bleeding the water out of a radiator until the
pressure is 0.0 bar?. I don't mind doing that.

Just turn off one radiator at both taps, then drain off a litre or 2
from that radiator by undoing the tail nut near the tap.
Remove either the bleed valve or blind plug at the top of the rad, then
pour the inhibitor into the rad. Fill it up with water as much as you
can then, put the plug back in, turn on the rad valves,bleed it, then
check the pressure at the boiler, it should have only gone down by a
tiny amount.
If you have not got the screw-in plug/bleed valves on your rads, then
you'll have to drain it down a lot more to pour the inhib into the
pipes.
Alan.
--
To reply by e-mail, change the ' + ' to 'plus'.

No, this is a concentrate product which is injected by a mastic gun.

http://www.sentinel-solutions.net/en...00/concentrate


The technique described by Alan is OK for any type of inhibitor or cleaning
product. Just do the instructions he has given and inject the product into
one radiator. When the system is running it will disperse the solution
around the circuit without any problem. You don't have to do anything
special to add these products to the system. Adding it to one radiator is
enough once the system gets running again.

Good luck with it.

On 21 Nov, 22:22, "BigWallop" wrote:
wrote in message

...



On 21 Nov, 21:55, (A.Lee) wrote:
wrote:
I need to refill inhibitor again as there was quite a bad leak in the
system, I have bought Sentinel X100 concentrate (BTW it was quite
cheap at Homebase, Twelve forty nine only). However the instructions
differ slightly to the Fernox product I used previously.

The instructions state that you must depressurise the system if it is
a sealed system, I suppose this is to prevent the inhibitor spitting
back out which was rather messy with the Fernox product.
Can I depressurise by bleeding the water out of a radiator until the
pressure is 0.0 bar?. I don't mind doing that.

Just turn off one radiator at both taps, then drain off a litre or 2
from that radiator by undoing the tail nut near the tap.
Remove either the bleed valve or blind plug at the top of the rad, then
pour the inhibitor into the rad. Fill it up with water as much as you
can then, put the plug back in, turn on the rad valves,bleed it, then
check the pressure at the boiler, it should have only gone down by a
tiny amount.
If you have not got the screw-in plug/bleed valves on your rads, then
you'll have to drain it down a lot more to pour the inhib into the
pipes.
Alan.
--
To reply by e-mail, change the ' + ' to 'plus'.

No, this is a concentrate product which is injected by a mastic gun.

http://www.sentinel-solutions.net/en...00/concentrate

The technique described by Alan is OK for any type of inhibitor or cleaning
product. Just do the instructions he has given and inject the product into
one radiator. When the system is running it will disperse the solution
around the circuit without any problem. You don't have to do anything
special to add these products to the system. Adding it to one radiator is
enough once the system gets running again.

Good luck with it.

Ok I understand (nearly) so how and why do I have to pour water back
in the radiator?
Are you 100% sure the inhibitor won't start spitting back out after I
remove the adapter?

Thank you, I am a new to this kind of thing.

wrote in message
...
On 21 Nov, 22:22, "BigWallop" wrote:
wrote in message


...



On 21 Nov, 21:55, (A.Lee) wrote:
wrote:
I need to refill inhibitor again as there was quite a bad leak in
the
system, I have bought Sentinel X100 concentrate (BTW it was quite
cheap at Homebase, Twelve forty nine only). However the
instructions
differ slightly to the Fernox product I used previously.

The instructions state that you must depressurise the system if it
is
a sealed system, I suppose this is to prevent the inhibitor
spitting
back out which was rather messy with the Fernox product.
Can I depressurise by bleeding the water out of a radiator until
the
pressure is 0.0 bar?. I don't mind doing that.

Just turn off one radiator at both taps, then drain off a litre or 2
from that radiator by undoing the tail nut near the tap.
Remove either the bleed valve or blind plug at the top of the rad,
then
pour the inhibitor into the rad. Fill it up with water as much as
you
can then, put the plug back in, turn on the rad valves,bleed it,
then
check the pressure at the boiler, it should have only gone down by a
tiny amount.
If you have not got the screw-in plug/bleed valves on your rads,
then
you'll have to drain it down a lot more to pour the inhib into the
pipes.
Alan.
--
To reply by e-mail, change the ' + ' to 'plus'.

No, this is a concentrate product which is injected by a mastic gun.

http://www.sentinel-solutions.net/en...00/concentrate

The technique described by Alan is OK for any type of inhibitor or
cleaning
product. Just do the instructions he has given and inject the product
into
one radiator. When the system is running it will disperse the solution
around the circuit without any problem. You don't have to do anything
special to add these products to the system. Adding it to one radiator
is
enough once the system gets running again.

Good luck with it.

Ok I understand (nearly) so how and why do I have to pour water back
in the radiator?
Are you 100% sure the inhibitor won't start spitting back out after I
remove the adapter?

Thank you, I am a new to this kind of thing.


Right, here goes. :-)

Turn off both valves to one radiator. Put a jug or bowl under the bleeder
valve of the radiator and undo the valve. Water will come out and go into
the jug / bowl. This leaves a space in the radiator for you to put in your
chemicals. Inject the chemicals into the bleeder hole. Don't lose the
bleeder bolt. Put it somewhere safe, like in a pocket or something.

Once you have injected your chemicals, put the bleeder bolt back into the
radiator and open up the valves to allow the water back in to the radiator.
Start the system running as normal. The system will make funny noises with
the air moving around. Don't worry about it just now.

After an hours or two (or even the following morning) of having the system
running, go around all the radiators, starting with the highest, and bleed
the air out. Remember to top up the boiler to its working pressure again.
The chemicals will have had the chance to work their way around the whole
system in that time. That's it. The jobs done.

Good luck with it. It's not difficult.

On 21 Nov, 22:22, "BigWallop" wrote:
wrote in message

...



On 21 Nov, 21:55, (A.Lee) wrote:
wrote:
I need to refill inhibitor again as there was quite a bad leak in the
system, I have bought Sentinel X100 concentrate (BTW it was quite
cheap at Homebase, Twelve forty nine only). However the instructions
differ slightly to the Fernox product I used previously.

The instructions state that you must depressurise the system if it is
a sealed system, I suppose this is to prevent the inhibitor spitting
back out which was rather messy with the Fernox product.
Can I depressurise by bleeding the water out of a radiator until the
pressure is 0.0 bar?. I don't mind doing that.

Just turn off one radiator at both taps, then drain off a litre or 2
from that radiator by undoing the tail nut near the tap.
Remove either the bleed valve or blind plug at the top of the rad, then
pour the inhibitor into the rad. Fill it up with water as much as you
can then, put the plug back in, turn on the rad valves,bleed it, then
check the pressure at the boiler, it should have only gone down by a
tiny amount.
If you have not got the screw-in plug/bleed valves on your rads, then
you'll have to drain it down a lot more to pour the inhib into the
pipes.
Alan.
--
To reply by e-mail, change the ' + ' to 'plus'.

No, this is a concentrate product which is injected by a mastic gun.

http://www.sentinel-solutions.net/en...00/concentrate

The technique described by Alan is OK for any type of inhibitor or cleaning
product. Just do the instructions he has given and inject the product into
one radiator. When the system is running it will disperse the solution
around the circuit without any problem. You don't have to do anything
special to add these products to the system. Adding it to one radiator is
enough once the system gets running again.

Good luck with it.

Forgot to ask, can I drain a litre or two from the bleed valve with
the valves open?

wrote in message
...
On 21 Nov, 22:22, "BigWallop" wrote:
wrote in message


...



On 21 Nov, 21:55, (A.Lee) wrote:
wrote:
I need to refill inhibitor again as there was quite a bad leak in
the
system, I have bought Sentinel X100 concentrate (BTW it was quite
cheap at Homebase, Twelve forty nine only). However the
instructions
differ slightly to the Fernox product I used previously.

The instructions state that you must depressurise the system if it
is
a sealed system, I suppose this is to prevent the inhibitor
spitting
back out which was rather messy with the Fernox product.
Can I depressurise by bleeding the water out of a radiator until
the
pressure is 0.0 bar?. I don't mind doing that.

Just turn off one radiator at both taps, then drain off a litre or 2
from that radiator by undoing the tail nut near the tap.
Remove either the bleed valve or blind plug at the top of the rad,
then
pour the inhibitor into the rad. Fill it up with water as much as
you
can then, put the plug back in, turn on the rad valves,bleed it,
then
check the pressure at the boiler, it should have only gone down by a
tiny amount.
If you have not got the screw-in plug/bleed valves on your rads,
then
you'll have to drain it down a lot more to pour the inhib into the
pipes.
Alan.
--
To reply by e-mail, change the ' + ' to 'plus'.

No, this is a concentrate product which is injected by a mastic gun.

http://www.sentinel-solutions.net/en...00/concentrate

The technique described by Alan is OK for any type of inhibitor or
cleaning
product. Just do the instructions he has given and inject the product
into
one radiator. When the system is running it will disperse the solution
around the circuit without any problem. You don't have to do anything
special to add these products to the system. Adding it to one radiator
is
enough once the system gets running again.

Good luck with it.

Forgot to ask, can I drain a litre or two from the bleed valve with
the valves open?


No. The valves have to be closed, because you will only have water
continuously running through the radiator, which is not what you want to
have when doing this procedure.

In article
,
wrote:
I need to refill inhibitor again as there was quite a bad leak in the
system, I have bought Sentinel X100 concentrate (BTW it was quite
cheap at Homebase, Twelve forty nine only). However the instructions
differ slightly to the Fernox product I used previously.

The instructions state that you must depressurise the system if it is
a sealed system, I suppose this is to prevent the inhibitor spitting
back out which was rather messy with the Fernox product.
Can I depressurise by bleeding the water out of a radiator until the
pressure is 0.0 bar?. I don't mind doing that.

Big snag with this is trying to catch all the water ejected. Because
there's a pressure vessel it's rather more than you might expect.

It *really* is worth while fitting a convenient drain down point for
future use. Even although it's not needed that often. My favourite is a
combination lockshield/drain on a rad near an outside door so you can just
fit a length of hose and drain easily with no mess.

--
*Young at heart -- slightly older in other places

Dave Plowman London SW
To e-mail, change noise into sound.

On 22 Nov, 00:37, "Dave Plowman (News)" wrote:
In article
,
wrote:

I need to refill inhibitor again as there was quite a bad leak in the
system, I have bought Sentinel X100 concentrate (BTW it was quite
cheap at Homebase, Twelve forty nine only). However the instructions
differ slightly to the Fernox product I used previously.
The instructions state that you must depressurise the system if it is
a sealed system, I suppose this is to prevent the inhibitor spitting
back out which was rather messy with the Fernox product.
Can I depressurise by bleeding the water out of a radiator until the
pressure is 0.0 bar?. I don't mind doing that.

Big snag with this is trying to catch all the water ejected. Because
there's a pressure vessel it's rather more than you might expect.

It *really* is worth while fitting a convenient drain down point for
future use. Even although it's not needed that often. My favourite is a
combination lockshield/drain on a rad near an outside door so you can just
fit a length of hose and drain easily with no mess.

--
*Young at heart -- slightly older in other places

Dave Plowman London SW
To e-mail, change noise into sound.

Thanks for that, that is really the kind of idiots guide I needed.
I have loads of drain down points on the ground floor, there are all
near outside doors.

On Sat, 22 Nov 2008 00:34:19 -0800 (PST), wrote:

On 22 Nov, 00:37, "Dave Plowman (News)" wrote:
In article
,
wrote:

I need to refill inhibitor again as there was quite a bad leak in the
system, I have bought Sentinel X100 concentrate (BTW it was quite
cheap at Homebase, Twelve forty nine only). However the instructions
differ slightly to the Fernox product I used previously.
The instructions state that you must depressurise the system if it is
a sealed system, I suppose this is to prevent the inhibitor spitting
back out which was rather messy with the Fernox product.
Can I depressurise by bleeding the water out of a radiator until the
pressure is 0.0 bar?. I don't mind doing that.

Big snag with this is trying to catch all the water ejected. Because
there's a pressure vessel it's rather more than you might expect.

It *really* is worth while fitting a convenient drain down point for
future use. Even although it's not needed that often. My favourite is a
combination lockshield/drain on a rad near an outside door so you can just
fit a length of hose and drain easily with no mess.

--
*Young at heart -- slightly older in other places

Dave Plowman London SW
To e-mail, change noise into sound.

Thanks for that, that is really the kind of idiots guide I needed.
I have loads of drain down points on the ground floor, there are all
near outside doors.

Not so convenient if you live in a flat :-) My system has a drain
point connected up to where the old boiler had it's drain point
connected to an outside pipe that went to an outside downpipe and
there is also a filling point installed for putting inhibitor in near
the boiler .

wrote:
Hello,

I need to refill inhibitor again as there was quite a bad leak in the
system, I have bought Sentinel X100 concentrate (BTW it was quite
cheap at Homebase, Twelve forty nine only). However the instructions
differ slightly to the Fernox product I used previously.

The instructions state that you must depressurise the system if it is
a sealed system, I suppose this is to prevent the inhibitor spitting
back out which was rather messy with the Fernox product.
Can I depressurise by bleeding the water out of a radiator until the
pressure is 0.0 bar?. I don't mind doing that.


Apologies if this has been stated by others.

I have a pressurised system and encountered a significant problem when
adding Fernox from a mastic tube.

My rads are double panel with a tee piece linking each panel and the
bleed point in the middle of the Tee. I found that the tip of the
Fernox tube didn't want to fit into the hole left by the bleed nipple
and the flexible hose supplied wouldn't bend into the Tee after removing
the end cap so the Fernox tended to dribble out.

My solution was to get a spare end plug for the rad - one with a hole in
the centre for the bleed nipple - and drill out the bleed nipple hole
until the hose supplied with the Fernox tube was a pretty tight fit in
the hole. After de-pressurising the rad as described above I replaced
the end cap with my 'adapted' one and injected the Fernox without
spilling a drop. Then replaced the end cap and proceeded as described
above.

HTH

Richard

"Richard Savage" wrote in message
...
wrote:
Hello,

I need to refill inhibitor again as there was quite a bad leak in the
system, I have bought Sentinel X100 concentrate (BTW it was quite
cheap at Homebase, Twelve forty nine only). However the instructions
differ slightly to the Fernox product I used previously.

The instructions state that you must depressurise the system if it is
a sealed system, I suppose this is to prevent the inhibitor spitting
back out which was rather messy with the Fernox product.
Can I depressurise by bleeding the water out of a radiator until the
pressure is 0.0 bar?. I don't mind doing that.


Apologies if this has been stated by others.

I have a pressurised system and encountered a significant problem when
adding Fernox from a mastic tube.

My rads are double panel with a tee piece linking each panel and the bleed
point in the middle of the Tee. I found that the tip of the Fernox tube
didn't want to fit into the hole left by the bleed nipple and the flexible
hose supplied wouldn't bend into the Tee after removing the end cap so the
Fernox tended to dribble out.

My solution was to get a spare end plug for the rad - one with a hole in
the centre for the bleed nipple - and drill out the bleed nipple hole
until the hose supplied with the Fernox tube was a pretty tight fit in the
hole. After de-pressurising the rad as described above I replaced the
end cap with my 'adapted' one and injected the Fernox without spilling a
drop. Then replaced the end cap and proceeded as described above.

HTH

Richard

Just drain it somewhere. If necessary crack open a valve at the end of a
radiator and let water drain into a baking tray or bowl. it isn't rocket
science.

In article ,
John wrote:
Just drain it somewhere. If necessary crack open a valve at the end of a
radiator and let water drain into a baking tray or bowl.

And get some of that lovely black water all over the carpet? ;-)

it isn't rocket science.

It's certainly not to use the proper drain point. Which for some reason
most don't want to use.

--
*There are two kinds of pedestrians... the quick and the dead.

Dave Plowman London SW
To e-mail, change noise into sound.

John wrote:
"Richard Savage" wrote in message


Apologies if this has been stated by others.

I have a pressurised system and encountered a significant problem when
adding Fernox from a mastic tube.

My rads are double panel with a tee piece linking each panel and the bleed
point in the middle of the Tee. I found that the tip of the Fernox tube
didn't want to fit into the hole left by the bleed nipple and the flexible
hose supplied wouldn't bend into the Tee after removing the end cap so the
Fernox tended to dribble out.

My solution was to get a spare end plug for the rad - one with a hole in
the centre for the bleed nipple - and drill out the bleed nipple hole
until the hose supplied with the Fernox tube was a pretty tight fit in the
hole. After de-pressurising the rad as described above I replaced the
end cap with my 'adapted' one and injected the Fernox without spilling a
drop. Then replaced the end cap and proceeded as described above.

HTH

Richard

Just drain it somewhere. If necessary crack open a valve at the end of a
radiator and let water drain into a baking tray or bowl. it isn't rocket
science.




John

I'm not commenting on or disagreeing about the need for draining to
allow space for the Fernox.

It's getting the damm stuff to creep into a horizontal pipe and flow
into the rad rather than back out whence it came that I prompted my
twopenneth worth.

Richard

On Sun, 23 Nov 2008 10:37:07 +0000, Richard Savage
wrote:

John wrote:
"Richard Savage" wrote in message


Apologies if this has been stated by others.

I have a pressurised system and encountered a significant problem when
adding Fernox from a mastic tube.

My rads are double panel with a tee piece linking each panel and the bleed
point in the middle of the Tee. I found that the tip of the Fernox tube
didn't want to fit into the hole left by the bleed nipple and the flexible
hose supplied wouldn't bend into the Tee after removing the end cap so the
Fernox tended to dribble out.

My solution was to get a spare end plug for the rad - one with a hole in
the centre for the bleed nipple - and drill out the bleed nipple hole
until the hose supplied with the Fernox tube was a pretty tight fit in the
hole. After de-pressurising the rad as described above I replaced the
end cap with my 'adapted' one and injected the Fernox without spilling a
drop. Then replaced the end cap and proceeded as described above.

HTH

Richard

Just drain it somewhere. If necessary crack open a valve at the end of a
radiator and let water drain into a baking tray or bowl. it isn't rocket
science.




John

I'm not commenting on or disagreeing about the need for draining to
allow space for the Fernox.

It's getting the damm stuff to creep into a horizontal pipe and flow
into the rad rather than back out whence it came that I prompted my
twopenneth worth.

Richard

That's just down to things that you probably learned at school...If
you want something to go in ( in this case inhibitor) then something
( in this case air) has to come out .If the tube won't allow the air
to come out then the inhibitor will just spill back out. Simple.

wrote:


That's just down to things that you probably learned at school...If
you want something to go in ( in this case inhibitor) then something
( in this case air) has to come out .If the tube won't allow the air
to come out then the inhibitor will just spill back out. Simple.

What assumptions are you making about my, or anyone elses, education?

In my experience, despite having provided ample space for the inhibitor
by draining a quantity of water from the system, it will not flow from
the Tee pipe into the radiator that I use as the insertion point for
inhibitor. Rather it flows out. It doesn't matter if I use the Tee at
the other end of said rad so it's not the angle of the rad that is
causing problems.


Richard