00:00:03.529 my name is Alan hat and today we're 00:00:06.28900:00:06.299 gonna look at if your boiler is losing 00:00:08.69000:00:08.700 pressure I was actually asked by one of 00:00:11.87000:00:11.880 the subscribers who is a gas engineer 00:00:15.70000:00:15.710 he's got a system where the pressure 00:00:18.56000:00:18.570 keeps dropping so they're having to talk 00:00:21.80000:00:21.810 the pressure up on the boiler all the 00:00:23.77900:00:23.789 time the check round system they 00:00:27.74000:00:27.750 couldn't see anything leaking so what 00:00:30.25900:00:30.269 I'm going to do in this video today I'm 00:00:32.06000:00:32.070 gonna show you a few different reasons 00:00:34.25000:00:34.260 why you might your boiler might be 00:00:38.60000:00:38.610 losing pressure 00:00:39.50000:00:39.510 and I'm also going to show you how to 00:00:41.29900:00:41.309 test different ways as well 00:00:44.06000:00:44.070 so one of the reasons one of the reasons 00:00:49.34000:00:49.350 it could be this is that this is a 00:00:51.92000:00:51.930 booster but if you see on top blur this 00:00:55.01000:00:55.020 heat exchange has been leaking so it 00:00:57.50000:00:57.510 could be the internally in your boiler 00:01:00.43000:01:00.440 you bothers been leaking you can also 00:01:05.24000:01:05.250 sometimes get a link through a plate 00:01:07.16000:01:07.170 heat exchanger but I'll go through all 00:01:09.38000:01:09.390 the different I'm gonna go through as 00:01:12.08000:01:12.090 many of the different scenarios as I can 00:01:14.99000:01:15.000 and I'm also gonna show you how to test 00:01:17.62000:01:17.630 following different scenarios so you can 00:01:20.92900:01:20.939 rule out things like the boiler so 00:01:23.48000:01:23.490 you're not spending a lot of time and 00:01:26.51000:01:26.520 money 00:01:27.02000:01:27.030 lifting flower bulbs up list lifting 00:01:29.45000:01:29.460 tile floors up tracing pipes when it 00:01:32.56900:01:32.579 maybe the boiler that's leaking so what 00:01:35.63000:01:35.640 I'll do is I'll show you I'll show you 00:01:37.96900:01:37.979 how to test for that as well so first of 00:01:40.64000:01:40.650 all what I'm gonna do we're gonna look 00:01:42.64900:01:42.659 at really it so if you if your pressure 00:01:45.62000:01:45.630 in your boiler so we look at will zoom 00:01:48.53000:01:48.540 in well look at this pressure gage now 00:01:52.60900:01:52.619 so if you pressure gauge has dropped to 00:01:55.76000:01:55.770 zero if it's just the one off then just 00:01:59.66000:01:59.670 top it up to around one bar this could 00:02:03.20000:02:03.210 be on a combi boiler and it could be on 00:02:05.12000:02:05.130 a system boiler or and if any type of 00:02:07.73000:02:07.740 system that sealed really and if that's 00:02:10.10000:02:10.110 just the one off then that's fine you 00:02:11.93000:02:11.940 don't need to do anything else 00:02:13.25000:02:13.260 if this continually keeps dropping or if 00:02:17.69000:02:17.700 it continually goes right around to free 00:02:20.28900:02:20.299 then you've got an issue which which 00:02:23.11900:02:23.129 what we'll talk about today in this 00:02:25.28000:02:25.290 video so first of all I'm gonna have a 00:02:28.06900:02:28.079 look at the possibility of leaks on the 00:02:32.05900:02:32.069 system so I'm going to show some leaks 00:02:33.71000:02:33.720 on some radiators so let's go and have a 00:02:35.53900:02:35.549 look at them now 00:02:37.56900:02:37.579 shortly I'll show you how to test the 00:02:40.72900:02:40.739 boiler and how to rule out the boiler to 00:02:43.33900:02:43.349 see if the boilers leak in but first of 00:02:45.68000:02:45.690 all there's some simple checks that we 00:02:48.05000:02:48.060 can do just to say if it's if you've got 00:02:51.89000:02:51.900 a leak on your system so first of all we 00:02:54.53000:02:54.540 can either look look at some radiator 00:02:56.11900:02:56.129 valves so zoom in now to this radiator 00:02:58.64000:02:58.650 valve and we can have a look at this and 00:03:00.92000:03:00.930 see if this has been leaking if you have 00:03:06.17000:03:06.180 a look at this really evolved here we 00:03:08.15000:03:08.160 can see there's some lines don't quite 00:03:11.18000:03:11.190 work see there this this this here 00:03:15.92000:03:15.930 there's obviously being something 00:03:18.50000:03:18.510 clicking here so this if you're I've got 00:03:21.71000:03:21.720 pressure dropping on this particular 00:03:23.97900:03:23.989 installation it could be it just needs 00:03:27.80000:03:27.810 an ippon optic and this make might not 00:03:29.72000:03:29.730 be whack because as the system gets hot 00:03:32.47900:03:32.489 sometimes this will evaporate so we need 00:03:35.65900:03:35.669 to make sure I'll just check any of 00:03:37.30900:03:37.319 these nuts on your radiances all right 00:03:40.43000:03:40.440 all the way around your system and just 00:03:42.65000:03:42.660 make sure you've got no leaks on them 00:03:44.58900:03:44.599 also if you take the cap 00:03:47.41000:03:47.420 off the top you can see if it's been 00:03:51.88000:03:51.890 leaking out at the top of a cap and then 00:03:56.32000:03:56.330 also well sometimes if it has been 00:03:59.44000:03:59.450 leaking at the top of there you can just 00:04:02.26000:04:02.270 tighten this nuts up here slightly and 00:04:06.28000:04:06.290 I'll stop I'll stop that leaking and 00:04:10.84000:04:10.850 then if we have a look at if we have a 00:04:13.57000:04:13.580 look at the top of the radiator there's 00:04:17.11000:04:17.120 also a connection here and sometimes 00:04:19.96000:04:19.970 these can leak from this connection here 00:04:22.65900:04:22.669 so that's another thing just to check to 00:04:25.81000:04:25.820 make sure it's not being like in another 00:04:29.80000:04:29.810 thing to check is if you've got firma 00:04:32.17000:04:32.180 stuff on the system so you might have a 00:04:35.14000:04:35.150 TR v so that's thermostatic radiator 00:04:37.84000:04:37.850 valve and what you can do is on that you 00:04:40.69000:04:40.700 might see that it's got lines of water 00:04:42.64000:04:42.650 I'll stands on side of it and it may be 00:04:44.92000:04:44.930 that that's been leaking but you can tip 00:04:47.35000:04:47.360 top off and you can have a look inside 00:04:50.26000:04:50.270 and you can just see fat pin if it's 00:04:52.96000:04:52.970 been leaking from that pin one thing to 00:04:56.08000:04:56.090 remember with the heating system is if 00:04:58.46900:04:58.479 it's a combi if it's a sealed system 00:05:01.92000:05:01.930 what you've got is you've got if you're 00:05:04.45000:05:04.460 topping it up the water is coming out 00:05:06.70000:05:06.710 somewhere and that's why the pressure is 00:05:08.86000:05:08.870 going down so that could be on the 00:05:11.56000:05:11.570 heating system so if you look at your 00:05:13.63000:05:13.640 heating system here it could be on any 00:05:16.65900:05:16.669 of the joints on the system so you may 00:05:20.50000:05:20.510 need to lift flower bulbs up and you may 00:05:23.53000:05:23.540 need to trace where it's leaking from 00:05:26.10000:05:26.110 but before you start lifting flower 00:05:29.56000:05:29.570 bulbs up what I would do my personal 00:05:32.92000:05:32.930 opinion is I will check the boiler so 00:05:35.83000:05:35.840 let's go and have a look at the boiler 00:05:37.18000:05:37.190 now and we'll see how the boiler could 00:05:39.73000:05:39.740 be losing pressure so now we'll have a 00:05:43.06000:05:43.070 look at the boiler and if your boiler is 00:05:45.67000:05:45.68000:05:47.13000:05:47.140 the there's a few ways the boiler could 00:05:50.74000:05:50.750 be losing pressure 00:05:51.82000:05:51.830 it could be losing pressure from the 00:05:54.52000:05:54.530 heat exchanger so the heat exchanger was 00:05:57.21900:05:57.229 split then water could leak 00:06:00.52000:06:00.530 into this combustion chamber here and 00:06:05.41000:06:05.420 then what that would do it would just go 00:06:07.57000:06:07.580 down the pipe and it would just go to 00:06:10.42000:06:10.430 your drain so you wouldn't know but that 00:06:13.03000:06:13.040 was leaking but I will show you aware 00:06:15.34000:06:15.350 that you can check that shortly there's 00:06:19.00000:06:19.010 a lot of a few ways it could be leaking 00:06:21.13000:06:21.140 out of the pressure relief valve so the 00:06:24.67000:06:24.680 the PRB valve on the blow-off valve and 00:06:27.88000:06:27.890 what that would do normally outside so 00:06:31.12000:06:31.130 near your boiler on the outside wall of 00:06:33.46000:06:33.470 a little pipe that sticks out it may 00:06:36.34000:06:36.350 have a little bend on it 00:06:37.45000:06:37.460 so it may have a bend on it like that or 00:06:41.83000:06:41.840 it may have a bend on it and it might go 00:06:43.33000:06:43.340 back back to the wall right and what you 00:06:47.08000:06:47.090 could do is you could just see if that's 00:06:48.52000:06:48.530 wet and dump and if that is wet and dump 00:06:51.34000:06:51.350 then you know that it's coming out of 00:06:53.98000:06:53.990 the PRV so you need to have that changed 00:06:58.47000:06:58.480 so I've got a few different examples 00:07:01.00000:07:01.010 here so this is your pressure relief 00:07:04.30000:07:04.310 valve your PRP so this is a buck sir 00:07:08.26000:07:08.270 that's the bucket your tech platinum 00:07:10.33000:07:10.340 style after the patents this is a boxer 00:07:15.46000:07:15.470 800 so the bucks 800 and the box 600 and 00:07:19.15000:07:19.160 the men's if government if you notice on 00:07:21.31000:07:21.320 the bucks and they're very easy to get 00:07:23.11000:07:23.120 into which which makes it really is it 00:07:25.63000:07:25.640 this is an idea logic 00:07:27.49000:07:27.500 I don't know idea logic it's just a back 00:07:31.00000:07:31.010 there which is a little bit more tricky 00:07:33.04000:07:33.050 to get into 00:07:34.60000:07:34.610 and then we've got these Minh and then 00:07:37.81000:07:37.820 these mum one you just just at the back 00:07:41.14000:07:41.150 there and then another thing that we 00:07:44.53000:07:44.540 could have that's leaking in a boiler is 00:07:47.74000:07:47.750 the auto air vent so if we have a look 00:07:50.35000:07:50.360 at the arts where events in this phase 00:07:52.72000:07:52.730 Minh but if you can see at the back 00:07:54.07000:07:54.080 there just there you can see that this 00:07:57.88000:07:57.890 one 00:07:58.36000:07:58.370 this one has been leaking it's been left 00:08:00.58000:08:00.590 open you can see that it's been leaking 00:08:02.91000:08:02.920 just going to close up but so that one's 00:08:07.30000:08:07.310 been leaking so that's another reason 00:08:09.15000:08:09.160 why the pressure would drop so that's on 00:08:13.81000:08:13.820 a buck 00:08:14.27000:08:14.280 sir and then we've got another box you 00:08:16.91000:08:16.920 want it back there so I don't if you can 00:08:19.28000:08:19.290 see that one that one's there that's a 00:08:21.32000:08:21.330 little bit more awkward to get into if 00:08:24.08000:08:24.090 we have a look in the ideologic it's 00:08:26.48000:08:26.490 just at the back on that one that one 00:08:29.36000:08:29.370 looks fairly easy to change I've never 00:08:33.11000:08:33.120 changed one of them ones but it looks 00:08:34.25000:08:34.260 fairly easy there may be reasons that 00:08:40.07000:08:40.080 when you're topping it up it's leaking 00:08:43.52000:08:43.530 out of the Piave which we'll go into 00:08:46.22000:08:46.230 that shortly now I'm gonna show you if 00:08:48.71000:08:48.720 the heat exchanger is leaking what we 00:08:51.62000:08:51.630 can do to test that and we can rule the 00:08:55.22000:08:55.230 boiler out so for instance this is this 00:09:00.17000:09:00.180 is a this is a worcester bosch combi 00:09:02.81000:09:02.820 boiler heat exchanger and if we have a 00:09:05.57000:09:05.580 look on software but if you can see on 00:09:08.75000:09:08.760 there we can see that this heat 00:09:11.54000:09:11.550 exchanger has been leaking so now what 00:09:14.48000:09:14.490 I'm gonna do is I'm gonna show you what 00:09:16.46000:09:16.470 we can do to rule out the heat exchanger 00:09:20.07900:09:20.089 and to rule out the boiler in general 00:09:22.79000:09:22.800 really but then after that we will go 00:09:25.49000:09:25.500 back to we'll go back to the expansion 00:09:27.65000:09:27.660 vessel under the pressure relief valve 00:09:30.26000:09:30.270 and I'll show you we'll talk about that 00:09:32.63000:09:32.640 as well 00:09:33.34000:09:33.350 but now what we'll do is zoom into 00:09:35.39000:09:35.400 boiler and I'm gonna show you how to 00:09:37.46000:09:37.470 test the boiler so if the boilers 00:09:40.79000:09:40.800 leaking internally what we can do to 00:09:43.46000:09:43.470 rule that out so we know whether our 00:09:45.47000:09:45.480 line is the boiler or if it is the 00:09:48.38000:09:48.390 heating system the way we can rule out 00:09:50.90000:09:50.910 the boiler if your pressure is on zero 00:09:56.02000:09:56.030 then what we can do we can top the 00:09:58.82000:09:58.830 pressure off so if you have a look on 00:10:01.10000:10:01.110 this one this one's topped up to just 00:10:04.13000:10:04.140 over just over one so it's like one and 00:10:07.10000:10:07.110 a half if we chop this up as much as we 00:10:09.62000:10:09.630 can maybe up to about two and a half 00:10:11.77000:10:11.780 I'll do that now I've now topped this 00:10:16.07000:10:16.080 boiler up if you need to know how to top 00:10:18.26000:10:18.270 a boiler up or an idealogical just just 00:10:21.92000:10:21.930 dive look at one of my other videos I've 00:10:23.39000:10:23.400 done plenty of videos on how to top a 00:10:25.85000:10:25.860 bar 00:10:26.32900:10:26.339 up and but I've put the pressure so the 00:10:29.09000:10:29.100 pressure now is just over two bar so the 00:10:32.15000:10:32.160 mains pressure here that that's the 00:10:34.63900:10:34.649 maximum pressure I can get so I'll zoom 00:10:36.61900:10:36.629 in now I'll show you that so the power 00:10:39.69900:10:39.709 to the boiler is is disconnected it's 00:10:42.37900:10:42.389 turned off and I've topped it up to just 00:10:44.90000:10:44.910 over to bar and now if you make a slight 00:10:47.50900:10:47.519 pencil mark on there so we know that if 00:10:50.36000:10:50.370 it drops we'll know and then and then 00:10:52.91000:10:52.920 what we can do we have a look underneath 00:10:54.82900:10:54.839 the boiler normally the by level of some 00:10:58.04000:10:58.050 isolation valves if these isolation 00:11:00.86000:11:00.870 valves are in good condition then you 00:11:03.65000:11:03.660 can turn turn these isolation valves off 00:11:08.94900:11:08.959 yeah and if you turn both isolations off 00:11:14.50900:11:14.519 into the boiler so now if you've turned 00:11:18.98000:11:18.990 both of the isolation valves off into 00:11:22.06900:11:22.079 the boiler for the floor and the return 00:11:25.05900:11:25.069 what you need to do we need to now leave 00:11:27.29000:11:27.300 it if possible if you could leave it 00:11:29.84000:11:29.850 overnight that would be good and then 00:11:32.92900:11:32.939 what you can do then is come back the 00:11:34.87900:11:34.889 next day and open them up so before you 00:11:40.30900:11:40.319 open the valves up have a look at the 00:11:42.91900:11:42.929 pressure gauge and if the pressure gauge 00:11:45.29000:11:45.300 is stayed the same then you know you can 00:11:48.59000:11:48.600 rule out the boiler you know the bottle 00:11:50.60000:11:50.610 is not leaking because the pressure gage 00:11:52.66900:11:52.679 are spared the same so internally the 00:11:55.93900:11:55.949 boiler is fine it's not leaking and then 00:11:59.47000:11:59.480 if you open both of the isolation valves 00:12:02.84000:12:02.850 under the boiler and then if it and then 00:12:05.90000:12:05.910 if you see a massive drop straight away 00:12:08.29000:12:08.300 then you know that the leak is on the 00:12:11.29900:12:11.309 central heating system somewhere so then 00:12:14.11900:12:14.129 you need to três três it on the central 00:12:17.36000:12:17.370 heating system so that's just one way of 00:12:20.15000:12:20.160 of checking and testing the boiler just 00:12:23.84000:12:23.850 to see so I hope that answers the 00:12:26.72000:12:26.730 question so there so they're lado or 00:12:29.21000:12:29.220 calibrate the wrong way and it can't be 00:12:32.05900:12:32.069 used to get to it yeah so now what we'll 00:12:35.92900:12:35.939 do I'll show you some some other 00:12:37.66900:12:37.679 examples of 00:12:39.86000:12:39.870 possible it is of what could leak on the 00:12:42.59000:12:42.600 system and we'll also talk about 00:12:44.57000:12:44.580 expansion vessels and the PR bays in the 00:12:48.95000:12:48.960 boiler just remove that down there so P 00:12:52.70000:12:52.710 RVs in the boiler and will tell you I'll 00:12:55.64000:12:55.650 talk to you on how they can affect the 00:12:59.12000:12:59.130 pressure in the system as well so let's 00:13:01.82000:13:01.830 have a look at them now just will I 00:13:05.90000:13:05.910 remember never something else that could 00:13:08.78000:13:08.790 be the reason for the system losing 00:13:12.56000:13:12.570 pressure you may have a drilling off 00:13:14.84000:13:14.850 somewhere 00:13:18.20000:13:18.210 might be under the floor or someone like 00:13:19.67000:13:19.680 that and you might have to trace it but 00:13:23.32900:13:23.339 sometimes what happens is were these 00:13:24.86000:13:24.870 were these drain offs it might not just 00:13:27.65000:13:27.660 look like that there's different 00:13:29.06000:13:29.070 examples but sometimes they can just 00:13:31.73000:13:31.740 grip slightly a bomb over time it has a 00:13:35.78000:13:35.790 rubber washer in there I'll just up from 00:13:38.21000:13:38.220 that wall I'll just open this up and 00:13:40.94000:13:40.950 just show you what the like inside so if 00:13:49.76000:13:49.770 you see in there just as a rubber washer 00:13:51.76000:13:51.770 and over time that rubber washer can can 00:13:55.94000:13:55.950 wear out or sometimes if somebody's 00:13:58.10000:13:58.110 timed it too much it might leaked a 00:14:00.41000:14:00.420 little bit before they can just start to 00:14:03.47000:14:03.480 lake and drip so that's another reason 00:14:05.69000:14:05.700 that you might have a leak on the system 00:14:08.72000:14:08.730 and you might be losing pressure 00:14:10.24000:14:10.250 most of the time a lot of time it might 00:14:12.65000:14:12.660 not be the boil it might just be simple 00:14:14.27000:14:14.280 things on the system another another 00:14:18.05000:14:18.060 thing to check now is if if the boilers 00:14:21.02000:14:21.030 not being serviced 00:14:22.04000:14:22.050 very well sometimes the expansion vessel 00:14:25.37000:14:25.380 could have lost charge and how you would 00:14:29.66000:14:29.670 how you can tell normally that is when 00:14:33.47000:14:33.480 you when you look at the pressure gauge 00:14:34.97000:14:34.980 if you top the pressure up to one bar so 00:14:39.05000:14:39.060 normally when the central heating system 00:14:41.30000:14:41.310 is cold top it up to one bar and then 00:14:46.13000:14:46.140 run the central heating system run the 00:14:48.82900:14:48.839 heating may get the radio as well and 00:14:52.55000:14:52.560 if if when all the systems now warm the 00:14:55.91000:14:55.920 pressure has gone up hopefully it would 00:14:59.75000:14:59.760 have only gone up to about one and a 00:15:01.46000:15:01.470 half so it's only gone up a little bit 00:15:03.74000:15:03.750 and that's fine but if it's gone up to 00:15:06.71000:15:06.720 now it's gone all the way around on the 00:15:08.18000:15:08.190 gauge and it's gone to free bar then 00:15:11.45000:15:11.460 then it's probably leaking out of the 00:15:15.53000:15:15.540 Piave and what that means is then as the 00:15:19.13000:15:19.140 system cools down and then you go back 00:15:21.56000:15:21.570 to the boiler and look at the pressure 00:15:22.73000:15:22.740 gauge you'll see that the pressure will 00:15:24.95000:15:24.960 now go down and it might be might be on 00:15:27.76900:15:27.779 half a bar so so the issue with that 00:15:30.97000:15:30.980 could be there's a number of things it 00:15:33.65000:15:33.660 could be but one it could be that you've 00:15:35.93000:15:35.940 got an under sized expansion vessel so 00:15:38.69000:15:38.700 sometimes if people have got like 20 00:15:41.26900:15:41.279 really is etc sometimes the expansion 00:15:44.51000:15:44.520 vessels inside the boilers obviously 00:15:47.63000:15:47.640 boilers nowadays need to be compact so 00:15:50.32900:15:50.339 the can only fit a certain size 00:15:52.43000:15:52.440 expansion vessel and different boilers 00:15:54.56000:15:54.570 of different size expansion vessels 00:15:56.42000:15:56.430 seven-layer eight leonine Lea sometimes 00:15:59.54000:15:59.550 ten later but the corona fits certain 00:16:02.39000:16:02.400 size expansion vessels in the boiler now 00:16:05.06000:16:05.070 that expansion vessel might not be big 00:16:06.98000:16:06.990 enough for the heating system so 00:16:09.77000:16:09.780 sometimes it may be that it needs 00:16:11.57000:16:11.580 additional expansion vessel but what I'd 00:16:14.75000:16:14.760 say is normally what will be is the 00:16:18.20000:16:18.210 expansion vessel needs topping up now 00:16:21.23000:16:21.240 what that will mean is that you'll need 00:16:22.79000:16:22.800 to get a gas engineer so anytime working 00:16:25.97000:16:25.980 on any boiler I would always advise you 00:16:29.03000:16:29.040 to have a gas engineer this is not a 00:16:31.19000:16:31.200 it's not a DIY video it's not doing 00:16:34.55000:16:34.560 yourself some things you can check 00:16:37.04000:16:37.050 yourself so the radiators but if you're 00:16:39.71000:16:39.720 gonna look inside a boiler then you need 00:16:41.69000:16:41.700 to call a gas engineer and if if that's 00:16:44.51000:16:44.520 happening if you look at your pressure 00:16:45.98000:16:45.990 gauge and you can see that your pressure 00:16:47.87000:16:47.880 good is going all the way around so 00:16:49.40000:16:49.410 you've topped up to one and it's going 00:16:51.47000:16:51.480 all the way around so free then what 00:16:53.57000:16:53.580 that means is you need to call out a gas 00:16:55.91000:16:55.920 engineer and have a service dump on the 00:16:59.54000:16:59.550 boiler explain to him what's happening 00:17:02.24000:17:02.250 and that the pressure is going up and it 00:17:04.42900:17:04.439 may be that what they need to do 00:17:06.07900:17:06.089 do a service on the boiler check all 00:17:08.77900:17:08.789 your boiler make sure you buy the safe 00:17:10.46000:17:10.470 but then they will top the expansion 00:17:13.51900:17:13.529 vessel up so I'll do now is I'll show 00:17:15.74000:17:15.750 you that well have a look at the 00:17:16.69900:17:16.709 expansion vessel and I'll show you how 00:17:18.89000:17:18.900 we could top an expansion vessel up so 00:17:23.60000:17:23.610 if we want to check the pressure in an 00:17:25.51900:17:25.529 expunction vessel we'll need to find 00:17:27.74000:17:27.750 where the shredder valve is it's on this 00:17:30.16900:17:30.179 one it's just on the bottom so that's on 00:17:32.21000:17:32.220 of these men boiler on this box a so 00:17:35.60000:17:35.610 this is a boxy dual tech box a platinum 00:17:37.78900:17:37.799 it's just at the back there so that's a 00:17:41.45000:17:41.460 little bit more tricky to get onto and 00:17:43.90900:17:43.919 then on this boxy 600 it's just there on 00:17:48.20000:17:48.210 the top so it's easy for us to check and 00:17:53.36000:17:53.370 test the expansion vessel we need to 00:17:56.60000:17:56.610 have no pressure in the system so 00:17:59.77900:17:59.789 normally what you do is isolate the 00:18:01.78900:18:01.799 boiler and drain the boiler on on this 00:18:05.77900:18:05.789 particular boiler house it drain off 00:18:08.51000:18:08.520 just here and then you would leave it 00:18:11.26900:18:11.279 open as you were topping the expansion 00:18:14.29900:18:14.309 vessel 00:18:14.77900:18:14.789 so on this foxy platinum to get to the 00:18:18.16900:18:18.179 expansion vessel we just need to we just 00:18:30.91900:18:30.929 need to take the spark generator just 00:18:33.74000:18:33.750 move that out of the way and move this 00:18:39.94000:18:39.950 out of the way and then you can get into 00:18:43.34000:18:43.350 the joint box of the spray the valve at 00:18:46.76000:18:46.770 the top of the heat exchanger I mean 00:18:51.38000:18:51.390 I've done I've done hundreds of them 00:18:53.26900:18:53.279 well quite a lot of them so it's very 00:18:55.66900:18:55.679 very easy to do once you get used to it 00:18:57.56000:18:57.570 and then all you need to do then is just 00:18:59.87000:18:59.880 get your foot pump and just connect your 00:19:03.11000:19:03.120 foot pump on to on to the shredder valve 00:19:07.54900:19:07.559 and what you'll find is with some of 00:19:10.97000:19:10.980 these boilers when you go to if boxes 00:19:13.03900:19:13.049 been out to a mall in the past sometimes 00:19:15.68000:19:15.690 they'll leave one of these connections 00:19:17.18000:19:17.190 um on the boiler 00:19:19.70000:19:19.710 so if you if you ever take one of these 00:19:21.08000:19:21.090 boilers arm you might find that one of 00:19:23.09000:19:23.100 them has been left on the boiler so I 00:19:27.95000:19:27.960 will need to do we just connect that 00:19:30.66900:19:30.679 onto the top of that and then once we've 00:19:43.15900:19:43.169 connected that on to top of there but 00:19:45.26000:19:45.270 then we're just going to connect the 00:19:46.90900:19:46.919 foot pump onto that so I've connected 00:19:50.81000:19:50.820 the foot pump on now what you'll find is 00:19:54.76900:19:54.779 you'll find that the pressure is quite 00:19:57.11000:19:57.120 low and normally what I normally do and 00:20:00.62000:20:00.630 I know I'm gonna chop them up to just 00:20:02.84000:20:02.850 over one bar as you see there it's all 00:20:06.35000:20:06.360 connected in so you just pump that up 00:20:09.47000:20:09.480 now my top little - just over one bar so 00:20:13.27900:20:13.289 that when I'm taking the I'm gonna 00:20:15.74000:20:15.750 taking it back off you might get a 00:20:19.37000:20:19.380 little bit comes out also after you've 00:20:21.86000:20:21.870 taken after you've removed this what you 00:20:24.71000:20:24.720 need to do is just spray the shredder 00:20:26.69000:20:26.700 valve just to make sure that the 00:20:28.51900:20:28.529 Schrader valve is not leaking 00:20:31.72000:20:31.730 once you've topped the expansion vessel 00:20:34.25000:20:34.260 up and put some more pressure in and put 00:20:36.01900:20:36.029 it to one bar you then need to test the 00:20:38.60000:20:38.610 screw the valve so I've just got some 00:20:40.49000:20:40.500 leak detector fluid and I just spread 00:20:43.37000:20:43.380 that you can use use any I'm not 00:20:45.52900:20:45.539 affiliated with but yeah just test test 00:20:50.41900:20:50.429 your expansion vessel Schrader valve and 00:20:52.31000:20:52.320 make sure that's not passing cuz I've 00:20:54.56000:20:54.570 escaped that was passing and then the 00:20:56.77900:20:56.789 pressure would would reduce then 00:21:00.88900:21:00.899 obviously you put put the bottle back 00:21:02.69000:21:02.700 together up in your vowels top it back 00:21:05.26900:21:05.279 up top it back up to one bar and then 00:21:08.53900:21:08.549 hopefully it should have solved the 00:21:10.61000:21:10.620 issues with the boiler I've tried to 00:21:13.94000:21:13.950 cover I've tried to cover as many as 00:21:17.00000:21:17.010 many as I can think of in this video 00:21:19.39900:21:19.409 these over of a bizarre examples so 00:21:23.84000:21:23.850 sometimes you may have a coil in an a 00:21:26.81000:21:26.820 exchanger that's splitting it's personal 00:21:29.34000:21:29.350 and that might be very very hard to find 00:21:32.51900:21:32.529 but number beyond if it was a system 00:21:34.52900:21:34.539 boiler or or something like that so is 00:21:37.68000:21:37.690 these exceptions but hopefully I've 00:21:39.96000:21:39.970 covered as many as I can in this video 00:21:43.28900:21:43.299 and I hope you found this video of some 00:21:45.99000:21:46.000 use if you'd like to subscribe please 00:21:48.89900:21:48.909 click below here both should I say here 00:21:52.37900:21:52.389 somewhere and then round here a lot some 00:21:55.11000:21:55.120 more videos as well and thank you very 00:21:58.23000:21:58.240 much for taking the time to to watch 00:22:00.89900:22:00.909 this video
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