00:00:00.319 hello today's video is about a boiler 00:00:04.43000:00:04.440 with a problem 00:00:05.42000:00:05.430 the customer was complaining of the hot 00:00:07.78900:00:07.799 water come out the taps going hot and 00:00:09.95000:00:09.960 cold hot & cold hot and cold now on a 00:00:11.69000:00:11.700 combi that's relatively common I have to 00:00:14.41900:00:14.429 do with this part here which they play 00:00:15.91900:00:15.929 heat exchanger lives at the back of the 00:00:18.52900:00:18.539 boiler in there and basically the top 00:00:22.97000:00:22.980 two holes of this play heat exchanger 00:00:25.26900:00:25.279 the heating water go through and the 00:00:28.00900:00:28.019 bottom two holes the cold water goes 00:00:31.00900:00:31.019 through the heat from the heating 00:00:33.56000:00:33.570 circuit passes through to the cold water 00:00:35.60000:00:35.610 circuit and gives you hot water at ups 00:00:37.76000:00:37.770 it's basically simple as that now the 00:00:40.40000:00:40.410 top two holes difficult to see but you 00:00:45.36900:00:45.379 can see they're a lot darker and the 00:00:47.93000:00:47.940 bottom two holes that's because sludge 00:00:50.75000:00:50.760 now inside here very very fine waterways 00:00:55.51000:00:55.520 you can't see I can't show you the torch 00:00:57.97900:00:57.989 anything this video very very fine 00:01:00.31900:01:00.329 waterways in fact I'll give it a go 00:01:08.67000:01:08.680 I don't know how well you've seen that 00:01:15.51000:01:15.520 but anyway the top two holes were 00:01:18.24000:01:18.250 blocked with sludge because I blot with 00:01:20.01000:01:20.020 sludge the heat can't transfer to the 00:01:22.50000:01:22.510 hot water circuit meaning that the 00:01:24.42000:01:24.430 boiler overheats they then cooled down 00:01:26.46000:01:26.470 overheat it ankles down that's what 00:01:28.35000:01:28.360 gives you hot cold hot and cold etc so 00:01:31.23000:01:31.240 this part had to be replaced inside the 00:01:33.69000:01:33.700 boiler costing the customer somewhere 00:01:35.91000:01:35.920 between two and three hundred pounds 00:01:37.11000:01:37.120 depending on the boiler cetera a way 00:01:40.80000:01:40.810 around this is to get a magnetic filter 00:01:43.10900:01:43.119 fitted on the heating system as you can 00:01:46.17000:01:46.180 see there you can see a link to it in my 00:01:47.96900:01:47.979 YouTube videos and what it is and what 00:01:50.46000:01:50.470 it does 00:01:50.94000:01:50.950 I've now retrofitted that to this boiler 00:01:54.17000:01:54.180 which will stop the majority of sludge 00:01:56.67000:01:56.680 entering the boiler it is imperative 00:01:59.60900:01:59.619 that the systems properly flushed when 00:02:01.46900:02:01.479 it's installed that any sludge it builds 00:02:03.54000:02:03.550 up over time is hopefully going to be 00:02:04.77000:02:04.780 caught by that filter to have a 00:02:07.65000:02:07.660 hundred-pound filter fitted with your 00:02:10.02000:02:10.030 boy you install it sounds like cheaper 00:02:11.85000:02:11.860 than having a boiler breakdown and 00:02:13.53000:02:13.540 paying to 200-pound tub this replaced 00:02:15.60000:02:15.610 I need system still full of sludge and 00:02:18.12000:02:18.130 I've now got together outlet system 00:02:20.25000:02:20.260 costing the customer more money so it's 00:02:24.24000:02:24.250 important to your system probably 00:02:25.11000:02:25.120 flushed and have a magnetic filter 00:02:26.79000:02:26.800 fitted to your system luckily on the 00:02:29.43000:02:29.440 back see this boil at this heat exchange 00:02:31.92000:02:31.930 is very easy to get out as you can see 00:02:33.42000:02:33.430 there's two screws two little knobs 00:02:35.58000:02:35.590 sticking up two screws and just slots 00:02:37.89000:02:37.900 out piece of cake getting out in the 00:02:39.24000:02:39.250 back seat other boilers not so easy like 00:02:42.00000:02:42.010 Worcester for example you've got a 00:02:43.22900:02:43.239 dismantle the whole boiler to get out 00:02:44.96000:02:44.970 unless you have the rear access which is 00:02:48.17000:02:48.180 slim to none Pat that opportunity so 00:02:51.93000:02:51.940 luckily this comes out really quickly 00:02:52.97900:02:52.989 and I can change it but let's like flush 00:02:56.19000:02:56.200 your system that's not just still in the 00:02:57.90000:02:57.910 radiators it's still going to go back in 00:03:01.05000:03:01.060 there and block it up again as the 00:03:03.78000:03:03.790 bottom two holes so your hot water 00:03:05.13000:03:05.140 circuit it's also recommended to have 00:03:07.32000:03:07.330 such some kind of scale conditioner 00:03:10.34000:03:10.350 fitted to the system to stop the bottom 00:03:13.05000:03:13.060 two holes getting clogged with scale 00:03:14.39000:03:14.400 noise often does it happen 00:03:17.97000:03:17.980 as we've sludge with the top two holes 00:03:19.65000:03:19.660 but it still can happen so one doing 00:03:21.47900:03:21.489 today 00:03:22.53000:03:22.540 this already I'm going to fit a combi 00:03:25.58900:03:25.599 mate to the boiler which all stops scale 00:03:28.89000:03:28.900 burn at the boiler I'm going to flush 00:03:30.44900:03:30.459 the system total cost it's costing them 00:03:33.66000:03:33.670 roughly the same manage well it would 00:03:35.06900:03:35.079 cost to install a boiler so that's why 00:03:37.22900:03:37.239 it's important don't pay cheap or you 00:03:40.02000:03:40.030 pay twice get it done properly the first 00:03:41.85000:03:41.860 time
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