00:00:00.149 plumber parts code at UK honest reviews 00:00:03.16900:00:03.179 and advice sponsored by Heaton plum comm 00:00:07.45000:00:07.460 hello and welcome to today's panel parts 00:00:10.00900:00:10.019 card UK video this video is basically a 00:00:12.56000:00:12.570 brief description of combi boiler 00:00:13.99900:00:14.009 systems and the difference between them 00:00:16.12900:00:16.139 and tank fed systems today we're using a 00:00:18.68000:00:18.690 grand vortex boiler to describe how 00:00:20.68900:00:20.699 combi system works Grant vortex has its 00:00:22.91000:00:22.920 main boiler system here so you've got 00:00:24.98000:00:24.990 your your ballot down there combustion 00:00:26.68900:00:26.699 chamber in here 00:00:27.52900:00:27.539 basically what combi boiler does is 00:00:29.35900:00:29.369 instead of having a heating system with 00:00:32.38900:00:32.399 the big tank and maybe an indirect call 00:00:34.25000:00:34.260 through or a heating element inside a 00:00:36.70900:00:36.719 combi boiler heats up the water directly 00:00:38.29900:00:38.309 using this bit here this is a plate heat 00:00:40.91000:00:40.920 exchanger let's just have a very quick 00:00:42.95000:00:42.960 look at plate heat exchanger and what it 00:00:45.31900:00:45.329 does now plate heat exchanger has a very 00:00:48.77000:00:48.780 high heat recovery which means it can 00:00:51.83000:00:51.840 transfer heat from one body of water to 00:00:54.35000:00:54.360 another very quickly almost in real time 00:00:57.36900:00:57.379 that's very important when being 00:01:00.11000:01:00.120 installed and used in a combi boiler we 00:01:03.13900:01:03.149 imagine we have the boiler here pumping 00:01:06.20000:01:06.210 heated hot water out into our heat 00:01:08.71900:01:08.729 exchanger here it goes round through the 00:01:11.63000:01:11.640 heat exchanger and then back to the 00:01:13.78900:01:13.799 border to be reheated now we have our 00:01:15.77000:01:15.780 cold main in this picks up water doesn't 00:01:19.24900:01:19.259 mix with anything else doesn't mix with 00:01:21.23000:01:21.240 a heated water than the boiler and it's 00:01:23.06000:01:23.070 heated up and Peaks heat up and goes off 00:01:25.58000:01:25.590 to the hot taps that's how they plate 00:01:28.39900:01:28.409 heat exchanger works so say when you 00:01:31.24900:01:31.259 open up your tap there's a dab of 00:01:32.99000:01:33.000 pressure switch which is like a paddle 00:01:34.73000:01:34.740 but it feels the water go through it 00:01:36.64900:01:36.659 clicks turns the boiler and this little 00:01:38.78000:01:38.790 pump on down here when that pump comes 00:01:40.76000:01:40.770 on it drags hot water from the burner 00:01:43.49000:01:43.500 right this is hot water that you don't 00:01:45.10900:01:45.119 wash in okay drags it through through 00:01:47.30000:01:47.310 this 35 litre heat store and then 00:01:49.73000:01:49.740 through the call in your heat exchanger 00:01:51.83000:01:51.840 and then back to the boiler as cold 00:01:54.20000:01:54.210 water enters from the from the mains as 00:01:56.56900:01:56.579 the water you're washing it picks up 00:01:58.45900:01:58.469 heat through this plating exchanger it's 00:02:00.83000:02:00.840 got a very high heat recovery rate and 00:02:02.42000:02:02.430 that goes off out to your taps really 00:02:05.33000:02:05.340 really hot and basic that's how combi 00:02:06.98000:02:06.990 boiler works I just want to show you the 00:02:08.90000:02:08.910 two different routes the two bodies of 00:02:10.79000:02:10.800 water take let's have a quick look you 00:02:12.38000:02:12.390 have your cold water 00:02:13.86000:02:13.870 it comes in here goes through an 00:02:15.69000:02:15.700 isolating valve so we can switch it on 00:02:17.07000:02:17.080 and off now this is the pressure switch 00:02:18.39000:02:18.400 here all that is is a small paddle 00:02:20.22000:02:20.230 imagine your light switch but instead of 00:02:21.80900:02:21.819 your finger pushing the light switch 00:02:23.43000:02:23.440 it's the fly of water going over a small 00:02:25.23000:02:25.240 paddle so the paddle clicks and turns 00:02:27.05900:02:27.069 the boiler on we come down down here 00:02:29.13000:02:29.140 through into the heat exchanger it gets 00:02:31.83000:02:31.840 all heated up and hot comes out through 00:02:33.69000:02:33.700 here is hot water goes through this 00:02:35.30900:02:35.319 mixer and then up here after your taps 00:02:37.44000:02:37.450 also you have another the cold water 00:02:39.21000:02:39.220 supply dusty and comes through here so 00:02:41.22000:02:41.230 you can basically adjust this and give 00:02:43.02000:02:43.030 that a certain type of heat now let's 00:02:44.46000:02:44.470 look at where the heating water goes the 00:02:46.56000:02:46.570 heating water comes at the top of the 00:02:48.93000:02:48.940 boiler here there can either tee off to 00:02:51.06000:02:51.070 the heating system this way or into our 00:02:53.10000:02:53.110 heat exchanger comes down into the pump 00:02:55.44000:02:55.450 pumped into the bottom of the 35 litre 00:02:57.42000:02:57.430 heat store and then it comes out of the 00:02:59.22000:02:59.230 heat store at the top here goes through 00:03:00.78000:03:00.790 the plate heat exchanger is back out 00:03:02.43000:03:02.440 from the boiler into the return of the 00:03:04.02000:03:04.030 boiler just like that it is worth 00:03:05.37000:03:05.380 pointing out the 35 litre heat stores 00:03:08.04000:03:08.050 and on always in koma boilers for 00:03:10.35000:03:10.360 instance most gas boilers don't have a 00:03:12.03000:03:12.040 35 litre heat stall or heat store at all 00:03:14.46000:03:14.470 their heat recovery is so good they can 00:03:16.94900:03:16.959 heat up hot water as it's needed without 00:03:19.22900:03:19.239 a store there the basic advantages of 00:03:21.36000:03:21.370 having a combi boiler are you don't have 00:03:23.34000:03:23.350 to heat up large amounts of water only a 00:03:25.25900:03:25.269 35 litre heat store whereas most hot 00:03:27.56900:03:27.579 water tanks are looking at least 100 00:03:28.97900:03:28.989 liters worth of water so basically 00:03:30.96000:03:30.970 that's how I combi boiler works I hope 00:03:32.69900:03:32.709 that's helped and if you think we've 00:03:34.83000:03:34.840 missed anything you want to know any 00:03:36.27000:03:36.280 more anything like that let us know and 00:03:38.69900:03:38.709 as ever subscribe to our videos oh I 00:03:40.94900:03:40.959 have a wicked great time and I'll see 00:03:43.34900:03:43.359 you guys soon thanks very much bye 00:03:45.19900:03:45.20900:03:48.72000:03:48.730 and advice sponsored by heat and plumb 00:03:51.42000:03:51.430 calm
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