- [Voiceover] Plumberparts.co.uk, honest reviews and advice.
(chirping)
- Not quite ready for that yet, believe me.
Welcome to today's Plumberparts.co.uk video.
Today, we're going to be looking at
the insane world of how to inhibit
pressurised heating systems.
It's a lot more fun than getting in a pool
that's on eight, ten degrees.
Because things happen to men and women, I imagine,
when you get in pools that cold.
Anyway enjoy. Hold tight!
Before we start,
make sure that the system
is fully turned off.
And, make sure that is it cold
and down to room temperature.
Right, the first thing you should do is
familiarise yourself with a pressurised heating system.
What we've got here is the expansion vessel.
We've got a filling loop here.
and this is the main system.
First thing and most importantly,
is dissipate the pressure in the heating system.
The first thing you do is make sure that the
cold feed to the system is turned off.
And, then that the brave is removed.
Once that's removed,
we're fortunate because we've got high-pressure
relief valve here that dumps the outside.
We can dissipate the pressure there.
But, a lot of the time,
you need to find a drain off on the system.
Get a hose,
open up the drain off until it reads
nor on here,
and then shut the drain off again.
So, I'm just going to do that here now.
This is a big system here,
(heater running)
so we're going to be putting about
five or six tubs of inhibitor in.
Well, we're reading about nor now in the pressure gauge.
And, all we need to do now is find a radiator
that we can put our inhibitor into.
So, let's do that.
Right, here's the radiator in question,
but we're also in a room full of wildlife.
Don't get me wrong, I know they're caged animals,
but they could be man-eaters.
This is the radiator that we're going to do here.
Why I have chosen this radiator
is because it's got an easily-remove key.
Now, what I'm going to do is use
what is called a half-inch male-threaded insert
to go and connect from my injector bottle here
because I've got that on there.
I made this myself
because I use these all the time
into our radiator.
Now, a lot of the time when you guys buy an inhibitor,
you might have aerosol inhibitor
or something like that.
What you'd have to do there,
you'd have to remove the pin out altogether,
and then a screw a small plastic insert.
It looks like a tiny, tiny spout or nozzle.
And, you have to screw that right in.
Just screw it all the way as well
because it can leak.
Now, for this one here,
all we need to do first
is just turn off the TRV at this end.
And, turn off the lock shield at the other end.
So, let's do that now.
Now, that we've got these two valves off,
we just need to make sure that they're holding.
A good way to do that,
get yourself a radiator bleed key
and just open that up.
Brilliant! So, now we know that has holded.
Now, at this point,
either you'll take out your small screw
and put your nozzle in, like I said,
or what I'm going to do
is remove the whole of this insert here.
This is my preferred method because
you get the most amount of inhibitor in really.
Alright, nice and quick,
and just swap that over like that.
Give that a quick wipe.
Now, you notice that I used a HEP 2A fit in there.
So, that means I can hold that
and twist it up really quick.
So, all we need to do now
is just pressurise this side,
the radiator side,
before we open our valve up.
(pumping)
So, just get pumping a couple of times.
And, then we can open this up,
this valve here,
and we'll hear our inhibitor
flying into the system.
Great! That's brilliant.
Now, what we need to do is keep on pumping.
(pumping)
(singing) Keep, keep pushing, keep, keep pushing. Nah.
Now, what we're going to do is
we're going to carry on pushing in until
we actually start pushing air into the radiator.
The idea being is
we keep pushing air in
and it pushes air about half-way down the rad,
then we can dissipate the pressure out
and then nothing will come out.
When we're finished,
we can shut the valve and everything.
I'll show you in a sec.
(pumping)
Well, it's starting to take a little bit of air now.
It's great. Alright,
keep pushing it at least 10 more pushes,
at least 10 of air.
Keep pushing the air in
(pushing)
Ten, and I'm going to go 10 more, I think.
Eleven, twelve, thirteen, fourteen,
fifteen, sixteen, seventeen, eighteen, nineteen, twenty.
Right, now what we do is this,
we shut our radiator valve.
Remember the other end's still closed.
We haven't opened that up yet.
And, then on every one of these,
even on this particular type,
or any of the main brands,
you'll have something that can dissipate the pressure.
So, open that up.
(air running)
Now, because we pumped all that
extra air into the radiator,
we're not getting any of our inhibitor out.
So, now we're ready to remove our
actual inhibitor injector from the radiator.
Yet, again, you want to be
nice and quick here.
Just get your towel,
shove that under there,
so we can catch any of the water
because sometimes there's a tiny, little dribble
that comes out.
It's just best to be prepared.
Then, straddle it a lot like that.
Tighten up our bleed insert.
Shot our key, or at this point,
put your key back if you've been using
an injector nozzle.
And, then open this valve up.
Now, you open up the other end of the radiator,
and then we'll go back down
to the boiler house.
But, sometimes, before you go back to the boiler house,
you might be a bit lucky
and have some pressure in from what you just put in.
(air moving)
And, just try and bleed that air out.
There we go!
It's all coming out now. Brilliant!
Now, all we need to do is
go back down to the boiler house and repressurize.
Sometimes, after repressurizing,
you have to go around the radiators
and make sure that they're all bled out.
Let's go down and repressurize the system now. Hoo!
(chirping)
Right, so we're back in here now.
So, now all we need to do
is reconnect our fitting loop.
As you can see,
we've still got a little bit of pressure
in here from when we injected our stuff earlier on.
And, then turn it on and pressurise
up to cold pressure of one bar.
There's one bar there,
just move that up. Beautiful!
Now, when we turn the system on
it should pressurise up to about
one and a half bar.
But, that would be totally in its tolerance.
That would be really, really happy.
Remember when you finish any work
with a pressurised heating system,
to remove the flexible filling loop.
Otherwise, it might accidentally fill itself up,
and we don't want that!
All you need to do now
is reinstate your heating system.
Bleed some radiators if they need bleeding.
And, then turn the heating system back on,
and that will start to circulate
all the inhibitor you just put in.
Right, I hope you've enjoyed today's
Plumberparts.co.uk video!
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or any more information,
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We really Tweet loads of pictures that you guys send us
of the absolute nightmares
that you guys come up against.
Because some of the work is,
let's face it, is atrocioso,
as they say in Italy or Spain.
Anyway, I'll see you in next week's video.
I hope you enjoy yourselves for the week,
and I hope it gets a bit warmer.
Remember, am I going to dive in there?
Am I going to jump in there right now
fully-clothed? Hmm, we'll see.
Remember, hold tight!
(slow motion)
Plumberparts.co.uk, honest reviews and advice.