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What is the difference between a combi and conventional boiler heating systems
WEBVTT Kind: captions Language: en
00:00:00.860 so we wanted to show you the main 00:00:03.29000:00:03.300 difference between a combination boiler 00:00:05.36000:00:05.370 and a conventional boiler but we're only 00:00:07.24900:00:07.259 talking about the heating so the 00:00:09.14000:00:09.150 radiators for a combination boiler what 00:00:13.64000:00:13.650 happens is you turn your thermostat on 00:00:17.95000:00:17.960 you want heat so the boiler then tells 00:00:20.99000:00:21.000 itself why to produce some heat comes 00:00:23.75000:00:23.760 from the boiler through the radiator 00:00:26.59900:00:26.609 back out the radiator and back to the 00:00:28.91000:00:28.920 boiler very very straightforward so you 00:00:31.82000:00:31.830 ask for it it should then come on goes 00:00:33.79900:00:33.809 free back out and back so the 00:00:37.25000:00:37.260 conventional system is slightly more 00:00:40.19000:00:40.200 complex but not too much more so you 00:00:44.03000:00:44.040 boiler see turn your thermostat on you 00:00:47.33000:00:47.340 then tell us it says to the boy - right 00:00:49.25000:00:49.260 I need to produce some heat for the 00:00:52.36900:00:52.379 radiators so the water water comes on 00:00:55.56900:00:55.579 goes to what's and this is the pump it's 00:01:01.61000:01:01.620 just a schematic symbol for it and then 00:01:03.47000:01:03.480 it goes to the Freeport valve which is a 00:01:04.96900:01:04.979 pretty port X and this Freeport valve 00:01:07.21900:01:07.229 then tells the water where to go either 00:01:09.95000:01:09.960 to your hot water which we're not we're 00:01:11.92900:01:11.939 talking about or chill heating so you've 00:01:14.75000:01:14.760 turned your thanks to on goes through 00:01:16.21900:01:16.229 the Freeport valve close down to 00:01:19.31000:01:19.320 radiator it's nice and hot comes back to 00:01:24.80000:01:24.810 your boiler return so it basically 00:01:28.10000:01:28.110 creates a constant circuit waters 00:01:31.10000:01:31.110 flowing constantly round for the time 00:01:32.92900:01:32.939 you want your heating or the thermostats 00:01:35.84000:01:35.850 reached its limit this temperature and 00:01:38.77000:01:38.780 this the boiler on the combi is fed via 00:01:43.89900:01:43.909 the mains 00:01:45.46900:01:45.479 so that's how that's filled up with the 00:01:50.63000:01:50.640 conventional system what you'll usually 00:01:52.19000:01:52.200 find is you see here a little tank in 00:01:55.52000:01:55.530 your loft this will come down feed pipes 00:01:59.60000:01:59.610 in a way just by the same as drawing and 00:02:02.56900:02:02.579 now I'm just be fed into the system and 00:02:04.78900:02:04.799 also have a well so I tried to technical 00:02:10.36900:02:10.379 on that but essentially a boiler then 00:02:12.55900:02:12.569 used apart 00:02:14.11900:02:14.129 personally radiator back and keeps going 00:02:17.25900:02:17.269 I hope this helps
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