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CENTRAL HEATING SYSTEMS - Gravity - Fully Pumped - Combi - Y Plan - S Plan

WEBVTT
Kind: captions
Language: en

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My name's Allen Hart
today I wanted to do a video about
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central heating systems different types
of systems of gravity hot water systems
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fully pumped systems and then
combination systems as well I'm going to
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try out a few different types of boilers
in as well so we've got combi boiler
00:00:24.330 --> 00:00:28.859
here this is this this company by
there's actually got a flu recovery
00:00:28.859 --> 00:00:35.090
system on top also look at standard
common Bay look at how our cylinders
00:00:35.090 --> 00:00:42.660
maybe look at some warm air as well so a
little bit system design and a little
00:00:42.660 --> 00:00:48.260
bit of boilers just just a bit of a mix
really so so let's let's go a lot down
00:00:48.260 --> 00:00:56.250
going back in time to McGee's as an
apprentice really floor standing while
00:00:56.250 --> 00:01:02.609
standing boilers up and float a lot of
the time these boilers was gravity
00:01:02.609 --> 00:01:08.130
gravity hot water pumped heating so what
you'd normally find is you'd find a
00:01:08.130 --> 00:01:13.170
couple of pipes there like that the
micro mount this side all outside and
00:01:13.170 --> 00:01:19.320
they could be namitha being 28 mil and
they would go up to a cylinder upstairs
00:01:19.320 --> 00:01:26.009
and they would just work on grubber so
house what gets hot water rises goes up
00:01:26.009 --> 00:01:31.470
sits cylinder and then comes back down
when it's cool ticks quite a long time
00:01:31.470 --> 00:01:36.860
for water to get hot and it's not
controlled very well either
00:01:36.860 --> 00:01:43.920
I'll do a little drawing about that and
I'll show you I'll show you I mean what
00:01:43.920 --> 00:01:47.310
you a lot of time what you found with
these as well as you might find that the
00:01:47.310 --> 00:01:53.100
pumps inside the boiler or the pump
might be under the floor near the boiler
00:01:53.100 --> 00:01:57.890
as well and the pump
before the central eating part of the
00:01:57.890 --> 00:02:03.170
system so we'll have a quick look now
I'll do a little drawing and I'll show
00:02:03.170 --> 00:02:10.160
you about that and then we'll move on to
looking the update version thing of when
00:02:10.160 --> 00:02:15.590
we went on to a fully pumped system so
we are dest plans and my plan so we'll
00:02:15.590 --> 00:02:23.780
have a look at that then as well so
what's a lock now this is a gravity hot
00:02:23.780 --> 00:02:29.870
water system in the most basic farm so
we're at the moment here we haven't go
00:02:29.870 --> 00:02:37.790
in a heating connected to this how this
works is the boiler fires up the hot
00:02:37.790 --> 00:02:42.410
water goes up the pipe there so that
would be the flow into the cylinder and
00:02:42.410 --> 00:02:47.420
then as it cools down it would come back
out and back to the boiler and that
00:02:47.420 --> 00:02:52.130
there's no pump on that and that just
works on gravity and how light is
00:02:52.130 --> 00:02:59.360
controlled is the there's only the
temperature control on the boiler so
00:02:59.360 --> 00:03:05.780
when the boiler gets up to temperature
it'll shut off so the control is it's
00:03:05.780 --> 00:03:14.810
not great but that's your basic diagram
and then this side of it that's you you
00:03:14.810 --> 00:03:19.910
cold water storage tank and then you
have your cold work going into you
00:03:19.910 --> 00:03:26.000
cylinder and your hot water coming out
to the towers and then for the heating
00:03:26.000 --> 00:03:32.600
system we would have two more pipes on
here and you would have a pompom and
00:03:32.600 --> 00:03:37.700
then that would pump around the heating
sure I'll show you I'll show you a date
00:03:37.700 --> 00:03:44.269
going now of this now with a with a pump
on it and then we can we can see how
00:03:44.269 --> 00:03:51.890
that would work as well sorry about the
drawing it's not it's not perfect but if
00:03:51.890 --> 00:03:57.260
we're imagine that is the boiler if we
was gonna up the heating now on to this
00:03:57.260 --> 00:04:03.409
without to over pipes so this one would
be the floor and that would be the
00:04:03.409 --> 00:04:08.959
return what you'd often find is the pump
would actually be on the return back
00:04:08.959 --> 00:04:14.420
into the boiler and then this would go
around your heating system and you'd
00:04:14.420 --> 00:04:21.019
have your radios on there could also be
a wall pipe system as well sometimes and
00:04:21.019 --> 00:04:26.979
that's how that would and that would
fill so to get water into this system
00:04:26.979 --> 00:04:33.740
normally you would have from from them
pants they're going up in your hair in
00:04:33.740 --> 00:04:41.210
covered you'd have a pipe going off
there that would be an expansion pie and
00:04:41.210 --> 00:04:49.240
that going to a centrally in head of
tank and then you'd have off there
00:04:51.969 --> 00:05:02.090
you would have a cold feed and that's
how you'd get water into gravity part of
00:05:02.090 --> 00:05:14.060
the heating system and then that would
fill the heating via the boiler so if we
00:05:14.060 --> 00:05:20.779
had a wool pipe system connected onto
this boiler we'd have a floor and it
00:05:20.779 --> 00:05:27.080
would go all the way around the circuit
and back to the boiler and off that pipe
00:05:27.080 --> 00:05:33.710
these would just have teas and then
would be connected underneath maybe
00:05:33.710 --> 00:05:41.960
under flower so it would always be one
continuous circuit obviously these are
00:05:41.960 --> 00:05:46.639
not going to work as well because
they're only going to go into the
00:05:46.639 --> 00:05:52.879
earlier via gravity so for instance if
you want to try and power flush a one
00:05:52.879 --> 00:05:58.990
pipe system you'd really struggle and
really it's almost impossible because
00:05:58.990 --> 00:06:05.289
you can't get the machine to go through
the radiators so that's just a basic
00:06:05.289 --> 00:06:11.539
diagram of our one pipe system would
work and I'll show you a two pipe system
00:06:11.539 --> 00:06:14.169
as well
00:06:16.360 --> 00:06:24.039
so again apologize for the poor quality
drawing but this is the two pipe system
00:06:24.039 --> 00:06:31.810
just a basic three runs on this there so
you've got your flow again and then it's
00:06:31.810 --> 00:06:35.319
two pipes so you've got flow and return
there outside of each other
00:06:35.319 --> 00:06:39.340
and when it goes into it ready as you've
got the floor
00:06:39.340 --> 00:06:43.689
the goes into ready air and then you've
got a return that comes out ready air
00:06:43.689 --> 00:06:51.039
that then goes but sat boiler so if you
shook all the rest of the radio is off
00:06:51.039 --> 00:06:56.139
and you just got one ready around then
the pump will be flowing through that
00:06:56.139 --> 00:07:01.479
one radiator so for instance if you want
it to do a power flush you could show
00:07:01.479 --> 00:07:07.629
your radios off connect your power flush
machine in and flush that one radiator
00:07:07.629 --> 00:07:14.919
and then you can open the next radiator
starts off lost that ready to close the
00:07:14.919 --> 00:07:22.300
previous really it off and and and and
yeah so he bits a fluster system better
00:07:22.300 --> 00:07:29.680
this is obviously a much better designed
because you can balance these read it as
00:07:29.680 --> 00:07:33.210
as well so you can balance the floor
around the system
00:07:33.210 --> 00:07:40.599
so the the radio a closes to the to the
pump pot on the floor you mere balance
00:07:40.599 --> 00:07:44.949
this down so it's only got a little bit
of flow going through it and then the
00:07:44.949 --> 00:07:51.069
one furthest to where you might have
that more open to allow the heat to get
00:07:51.069 --> 00:07:59.500
to that one so that's just a basic two
pipe heating design I'm now going to
00:07:59.500 --> 00:08:04.960
look at heating systems that's got zone
valves on and diverter valves I'm going
00:08:04.960 --> 00:08:10.150
to talk a little bit about diverter
valves tongues and valves and how they
00:08:10.150 --> 00:08:17.560
would be piped in to a system as well so
we've got a hot water cylinder here so
00:08:17.560 --> 00:08:21.889
normally that built
Aaron covered we've got pom-pom on
00:08:21.889 --> 00:08:27.259
system here and then we've got zone
valve on here as well so what I'm going
00:08:27.259 --> 00:08:33.529
to do I'm going to do smart drawings and
I'll show you different different ways
00:08:33.529 --> 00:08:40.610
of piping weaves or valves and with
controls and also what the different
00:08:40.610 --> 00:08:49.880
valves do and which way the floor goes
into the valves etc yeah so let's look
00:08:49.880 --> 00:09:00.579
at that now so when we have a look on a
zone valve often will see an hour--the
00:09:00.579 --> 00:09:04.970
so we know which where around the valve
needs to go
00:09:04.970 --> 00:09:10.699
so obviously the water would be pumping
this way sometimes you'll have an air
00:09:10.699 --> 00:09:16.070
and a B on them and normally the air
would be there and the B would be there
00:09:16.070 --> 00:09:22.510
so again you'd be pumping towards that
way
00:09:24.850 --> 00:09:32.500
when we look at standard freeway valve
so diverter valve we have an A and B we
00:09:32.500 --> 00:09:40.080
have an air and then we have a B so a
and B is the floor from the boiler and
00:09:40.080 --> 00:09:49.920
then you've got air yeah I also remember
air for air and then B b4 buff so here
00:09:49.920 --> 00:09:58.390
for the central heating and be full of
hot water cylinder so you flow up you're
00:09:58.390 --> 00:10:03.010
calling for hot water it'll go this way
and they'll go around the hot water
00:10:03.010 --> 00:10:07.720
cylinder if you call in for heating
they'll go that way and I'll go around
00:10:07.720 --> 00:10:18.130
the central heating circuit if you had
an open vent heating system
00:10:18.130 --> 00:10:25.330
eww floor coming up from your boiler and
then you'd need an expansion and you
00:10:25.330 --> 00:10:31.900
need a cold feed and then you W pump and
then you pump that she flow and that
00:10:31.900 --> 00:10:38.500
would go to the vowels so if it was an S
plan on a Y plan that would then go to
00:10:38.500 --> 00:10:47.620
to them valves so points to remember
then 50 Marcus Imam and these need to be
00:10:47.620 --> 00:10:53.530
behind the pump and then you've got this
is for the backseat by Allah so it's got
00:10:53.530 --> 00:10:58.030
a minimum head of Y I so you'd have to
check in installation instructions for
00:10:58.030 --> 00:11:08.100
that and then you've got your expansion
pipe normally minimum that would be 450
00:11:09.030 --> 00:11:16.480
so I apologize again for the poor
drawing so what we've got here we've got
00:11:16.480 --> 00:11:22.940
his header tank
for us heating this pipe here is the
00:11:22.940 --> 00:11:29.200
expansion pipe from the water level
layer so that pipe we want a minimum of
00:11:29.200 --> 00:11:37.250
450 ml and then we've got us cold feed
and when we go down here they need to be
00:11:37.250 --> 00:11:44.390
within 150 ml of each other so how I
remember this is of course EP so I'll
00:11:44.390 --> 00:11:55.790
say P so open vent the cold feed pump
and then to the control valves whichever
00:11:55.790 --> 00:12:01.460
type of valve we're gonna be using and
then if we follow that on onto a white
00:12:01.460 --> 00:12:10.310
plan which I was pumped put pigs Awards
a and b b b goes to a war so be for bath
00:12:10.310 --> 00:12:19.930
and a if rats so that's how are you
would pipe so that's for your wide plan
00:12:19.930 --> 00:12:28.820
if we look at an s-1 system so the Esper
of it still the same so we'll start from
00:12:28.820 --> 00:12:39.520
the pump and we've got to watch so these
are zone valves now so a debate so
00:12:39.520 --> 00:12:46.130
that's just hot water and then that way
would go to the radiators so that would
00:12:46.130 --> 00:12:52.730
be when you see two zombo's in like an
airing cupboard that would be a next
00:12:52.730 --> 00:13:00.320
plan what he'd also need on this he'd
also need a bypass so before the zone
00:13:00.320 --> 00:13:05.750
valves you'd need to pipe that then goes
back to the return on the heating on the
00:13:05.750 --> 00:13:11.180
heating system or on the the main return
because what what could happen is if if
00:13:11.180 --> 00:13:18.290
this valve here closed so the the rubs
are now up to temperature and if the hot
00:13:18.290 --> 00:13:23.930
water is now up to temperature the pump
would have nowhere to pump so you would
00:13:23.930 --> 00:13:28.980
you would need a bypass sometimes you'll
see like a gate valve on these and then
00:13:28.980 --> 00:13:33.690
sometimes you'll see an otter by bus we
were dark normally we'd want an answer
00:13:33.690 --> 00:13:42.990
by bus so I'd love to grab a say heating
systems a little bit we've also looked
00:13:42.990 --> 00:13:51.360
at s plums and white bones up and then
systems there's lots of different types
00:13:51.360 --> 00:13:55.649
of systems so you can also have seen
systems if you have a sealed system you
00:13:55.649 --> 00:14:00.029
don't know how to tank and then you'd
have a filling loop where you fill the
00:14:00.029 --> 00:14:07.740
system up normally they would be on like
a combi style system so you can have a
00:14:07.740 --> 00:14:12.240
normal standard boiler on a sealing
system you'd have to check the
00:14:12.240 --> 00:14:18.300
manufacturer's instructions but what
I'll do is we'll move on to combi
00:14:18.300 --> 00:14:24.360
boilers and I'll show you a sealed
system on a combi boiler and then that
00:14:24.360 --> 00:14:30.750
just gives you an idea of this so I'm
just doing a few different beautiful
00:14:30.750 --> 00:14:37.170
things there's many many different types
of of heating design and systems there
00:14:37.170 --> 00:14:42.990
were there were n plans and C plans and
any plans and all sorts of different
00:14:42.990 --> 00:14:48.209
plans Academy but to be honest because
I've never I've never fade any other
00:14:48.209 --> 00:14:55.380
types of systems so yeah so now what
we'll do is well I bought a condo boiler
00:14:55.380 --> 00:15:03.600
and our combi boiler system would work
so let's go look at one now so if we
00:15:03.600 --> 00:15:11.220
look at a combi a comedy boiler system
then it's it's so much more simple
00:15:11.220 --> 00:15:17.069
because it's all built into box really
so you've got white box on wall and it's
00:15:17.069 --> 00:15:21.750
all built inside so you've still got a
diverter valve inside you've still got a
00:15:21.750 --> 00:15:24.790
pump
instead of ahead of time cube nomicon
00:15:24.790 --> 00:15:28.600
expunction vessel so we can have a look
at that and then when you look on
00:15:28.600 --> 00:15:33.100
anomaly that I would pressure gauge so
it's got expansion vessel inside and
00:15:33.100 --> 00:15:38.770
then what we need to do we need to fill
the system up so we need to manually
00:15:38.770 --> 00:15:47.500
fill a combi boiler of our sealed system
with manual a solar system so we're
00:15:47.500 --> 00:15:51.040
normally our filling look below so well
I will have come to Neath now I'll show
00:15:51.040 --> 00:15:56.260
you bottom-up boiler here and then we
can see what the pipes do so we'll have
00:15:56.260 --> 00:16:06.970
a lot now so when we look at combi
boiler what we normally have will have a
00:16:06.970 --> 00:16:13.780
floor pipe so if we imagine on the
normal y plan system that has already
00:16:13.780 --> 00:16:18.550
come through you
y plan and that's now going into the
00:16:18.550 --> 00:16:24.610
radiators this pipe here is the hot
water so that if you imagine you have
00:16:24.610 --> 00:16:29.550
water cylinder that would be what came
out of the top of the hot water cylinder
00:16:29.550 --> 00:16:35.440
on this one we've got the cold the cold
pipe is there so that's the cold means
00:16:35.440 --> 00:16:40.570
so the cold means is going that we're
into the boiler and then the hot is
00:16:40.570 --> 00:16:46.690
going that way out of the boiler and
then we've got the return pipe so the
00:16:46.690 --> 00:16:52.300
floor is going that way and that's
feeding the heating system and then then
00:16:52.300 --> 00:16:57.340
we've got the return and the return is
going back so that's going back into the
00:16:57.340 --> 00:17:03.250
boiler so we've got us cold means here
instead of having the header tank up in
00:17:03.250 --> 00:17:09.040
the loft we're going to manually fill
the system instead so that's cold water
00:17:09.040 --> 00:17:15.010
comes in it goes around the filling loop
and it goes into the heating system so
00:17:15.010 --> 00:17:19.900
then chill valves at the moment above
turned in the off position but if we
00:17:19.900 --> 00:17:25.230
turn them first in the pipe work then we
would be filling the heating system and
00:17:25.230 --> 00:17:31.060
we'd normally fill this to around 1 bar
and I'll just I'll show you the I'll
00:17:31.060 --> 00:17:37.960
show you the
age on the front of the viola now so
00:17:37.960 --> 00:17:44.259
this is the pressure gauge on the boiler
also some boilers will have a display on
00:17:44.259 --> 00:17:50.350
the front which this has and that will
also read the pressure for you to fill
00:17:50.350 --> 00:17:56.049
up so what this has instead of having a
header tank up in the loft we have an
00:17:56.049 --> 00:18:01.210
expansion vessel that's built inside the
boiler so this is a white box that
00:18:01.210 --> 00:18:06.879
contains all the components so it's got
an expansion vessel it's got pump it's
00:18:06.879 --> 00:18:11.529
got a diverter valve it's got the heat
exchanger and it's all in it's just in
00:18:11.529 --> 00:18:18.909
one box so it just makes it nice and
easy to install one thing I farted sure
00:18:18.909 --> 00:18:26.470
you all this filling loop is this has
got a non-return valve in here so the
00:18:26.470 --> 00:18:33.940
one the this the wall of the number turn
valve goes on the cold so what we what
00:18:33.940 --> 00:18:38.080
we wanted to do is we don't want
centrally it wants her to go back into
00:18:38.080 --> 00:18:43.450
the cold med so I always make sure you
put these on the right way around and
00:18:43.450 --> 00:18:50.529
also then when you come later to top of
the expansion vessel during the system
00:18:50.529 --> 00:18:56.220
down you can do it from this valve so it
makes it so much easier
00:18:56.220 --> 00:19:02.529
most combi boilers work in the same way
so you've got the pump people a diverter
00:19:02.529 --> 00:19:09.909
valve that diverts it rather to the
heating system of solar hot water in a
00:19:09.909 --> 00:19:15.610
combi boiler on a player heat exchanger
which separates it and that separates so
00:19:15.610 --> 00:19:20.470
it's water to water so one side water on
other sides water and it's got a mouth
00:19:20.470 --> 00:19:28.450
flare in between that allows that mexic
so the heating water doesn't mix with
00:19:28.450 --> 00:19:36.720
the hot water that's going to come out
now this is a little bit of an exception
00:19:36.720 --> 00:19:44.380
to the rule so this this is God built a
flu recovery so there's there's a few
00:19:44.380 --> 00:19:49.690
boilers on the market that have that
Velen have wound Johnson and Starr they
00:19:49.690 --> 00:19:53.380
have one attack
it's act they have they have what as
00:19:53.380 --> 00:19:57.519
well they can't come on as economizer
yeah
00:19:57.519 --> 00:20:04.929
so how flu recovery works
the cold water comes in and it goes
00:20:04.929 --> 00:20:11.940
round the flu so if you imagine when
when you when you buy this on and yet
00:20:11.940 --> 00:20:17.580
you flue gases go up from your flu
that's the warm
00:20:17.580 --> 00:20:26.139
so what flu here recovery system does is
the cold war will go round the flu in a
00:20:26.139 --> 00:20:34.120
now ever they decided to do it will then
go back to the boiler but it's warmer
00:20:34.120 --> 00:20:40.139
so one it's gonna reduce your bills
because you don't have to heat the water
00:20:40.139 --> 00:20:47.620
requires quite as much the really good
it's a good it's a good idea and it's a
00:20:47.620 --> 00:20:55.330
good design but the number too expensive
so they're not really calm too much just
00:20:55.330 --> 00:21:02.769
get that they are the future and believe
in all honesty but we'll sit we'll see
00:21:02.769 --> 00:21:08.200
see how that girls yeah I think that's
it really
00:21:08.200 --> 00:21:12.880
and I think well do is I'll show you
I'll show you a warm hair a warmer
00:21:12.880 --> 00:21:20.860
bottler so it's not really essentially
designed but it's old old school really
00:21:20.860 --> 00:21:26.440
I used to do well of warm air many many
years ago so I'll show you a warm air
00:21:26.440 --> 00:21:32.040
boiler and just you just
an example really of all that words are
00:21:32.040 --> 00:21:39.270
an idea of how that works so let's go
and look at what we're boiler now it's a
00:21:39.270 --> 00:21:46.940
Johnson's dour
wall mer unit so there's a high spec j25
00:21:46.940 --> 00:21:56.070
if we look at this this is an open flow
version and look and look at this
00:21:56.070 --> 00:22:00.260
just don't look inside at the top here
00:22:01.550 --> 00:22:08.880
that's like yeah he filter but we've got
fun there and then that fun in there
00:22:08.880 --> 00:22:12.840
there's narrowed down there though if
you can see that I wrong so that I don't
00:22:12.840 --> 00:22:17.310
know if that's blowing wow that's
blowing down there so subtly blowing
00:22:17.310 --> 00:22:24.020
hold and that goes over the burner so
I'll show you that bit now took yourself
00:22:24.020 --> 00:22:29.370
when we look inside
we've got I've got gas valve this is for
00:22:29.370 --> 00:22:36.300
the warmer so this side of it is for the
warmer there and then if your other side
00:22:36.300 --> 00:22:42.020
here that that's a is for the hot water
00:22:43.140 --> 00:22:49.409
it's also got the gas stove on that as
well I'm actually what someone of these
00:22:49.409 --> 00:22:59.340
four must be 15 years or so so I do
apologize if if I get mixed up at all
00:22:59.340 --> 00:23:07.470
with any of this but what you've got
here is I believe that this is where the
00:23:07.470 --> 00:23:13.799
heat would come out work on the bottom
and you would have still like a floor
00:23:13.799 --> 00:23:17.159
mat oh really
and then you never return here the
00:23:17.159 --> 00:23:22.799
returned don't wait go back in it could
be all the way around but as I said
00:23:22.799 --> 00:23:25.740
cameraman but I'd have to read
instructions but I just wanted to just
00:23:25.740 --> 00:23:32.519
give you just to give you a look at
really yeah so yeah so that's sure what
00:23:32.519 --> 00:23:38.850
she won't marry you man so that's my
attempt on video about central heating
00:23:38.850 --> 00:23:46.340
system design I hope you found it useful
thank you for watching

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