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Boiler Types - Standard vs. High Efficiency

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Language: en

00:00:03.130
[Music]
00:00:06.160 00:00:06.170 welcome to TC - my name is Bill Bailey
00:00:09.620 00:00:09.630 adrenix manager here since about 2004
00:00:12.280 00:00:12.290 today I want to talk about to show you
00:00:14.660 00:00:14.670 the differences between a typical cast
00:00:16.790 00:00:16.800 iron boiler which is basically the meets
00:00:19.090 00:00:19.100 boiler in the market right now versus
00:00:21.859 00:00:21.869 some of the new high-efficiency boilers
00:00:23.509 00:00:23.519 that have been around for a while but
00:00:25.220 00:00:25.230 are still new to a lot of people first
00:00:28.070 00:00:28.080 thing here is basically standard cast
00:00:30.980 00:00:30.990 iron boiler
00:00:31.939 00:00:31.949 alright what you have here is basically
00:00:33.770 00:00:33.780 a standard flue normally goes into a
00:00:36.650 00:00:36.660 chimney in the front and sex of the unit
00:00:40.310 00:00:40.320 basically have the burners and behind
00:00:44.000 00:00:44.010 here the actual heat exchanger is a full
00:00:46.310 00:00:46.320 cast iron block so basically it's
00:00:48.920 00:00:48.930 sections of cast iron that are pressed
00:00:51.680 00:00:51.690 together in this application basically
00:00:54.080 00:00:54.090 cast iron push nipples that's where all
00:00:57.170 00:00:57.180 the water is in between the sections the
00:01:01.220 00:01:01.230 actual heat exchanger where the gas
00:01:04.780 00:01:04.790 basically the flue goes right up in
00:01:07.070 00:01:07.080 between those sections of transfers the
00:01:09.109 00:01:09.119 heat to the water that goes into our
00:01:11.750 00:01:11.760 hydronic systems burners all right - all
00:01:15.289 00:01:15.299 the bars are going there and typical
00:01:18.710 00:01:18.720 systems you have a spark igniter and a
00:01:22.010 00:01:22.020 flame rect predication chrome or the old
00:01:25.010 00:01:25.020 days they call it a thermocouple this
00:01:28.160 00:01:28.170 thing lights basically get a call for
00:01:30.440 00:01:30.450 heat the vent damper opens it goes
00:01:33.050 00:01:33.060 through a few safeties to make sure the
00:01:35.090 00:01:35.100 water temperatures tracked and a few
00:01:37.069 00:01:37.079 other things and then we'll light off
00:01:38.960 00:01:38.970 the burners this is atmospheric InDesign
00:01:42.020 00:01:42.030 because basically this boiler uses room
00:01:44.600 00:01:44.610 air so basically in the boiler room
00:01:46.819 00:01:46.829 there's bets on the doors or whatever to
00:01:48.530 00:01:48.540 allow air this boiler to create the
00:01:51.319 00:01:51.329 combustion to go between those sections
00:01:54.230 00:01:54.240 to transfer that heat out of the flame
00:01:56.120 00:01:56.130 and the fire into the water
00:01:59.899 00:01:59.909 slick research system and all exhaust
00:02:02.209 00:02:02.219 gases go up about the flue in our
00:02:03.889 00:02:03.899 chimney
00:02:04.700 00:02:04.710 these boilers range from about 80
00:02:06.709 00:02:06.719 datapad percent efficient there are two
00:02:10.339 00:02:10.349 new safety controls and
00:02:12.460 00:02:12.470 outdoor reset controls on these boilers
00:02:14.500 00:02:14.510 that have been required by the
00:02:15.520 00:02:15.530 government for the last couple of years
00:02:16.770 00:02:16.780 but the basis of this boiler is still a
00:02:19.450 00:02:19.460 good standard high quality cast iron
00:02:22.410 00:02:22.420 section that does all the heat transfer
00:02:25.350 00:02:25.360 okay the next boiler it's not totally
00:02:30.820 00:02:30.830 new these coils have been needing Europe
00:02:32.560 00:02:32.570 for probably 25 years now but absolutely
00:02:35.200 00:02:35.210 American market that's sorted for
00:02:37.420 00:02:37.430 considering 2,000 new but in boiler
00:02:40.330 00:02:40.340 standards in this country 2000 as a new
00:02:42.340 00:02:42.350 boiler this is a stainless steel heat
00:02:51.850 00:02:51.860 exchanger boiler today as you can see
00:02:56.730 00:02:56.740 the difference here over here that's
00:02:59.500 00:02:59.510 steel this is a man condensing boiler
00:03:02.290 00:03:02.300 this boiler condenses at the right water
00:03:06.040 00:03:06.050 temperatures so that means the flue
00:03:08.020 00:03:08.030 temperature is cooler thereby we can a
00:03:11.350 00:03:11.360 lot of times use PVC for the venting
00:03:14.710 00:03:14.720 material think about it condensing
00:03:18.340 00:03:18.350 boiler is that what we're actually
00:03:20.560 00:03:20.570 trying to do is as we soon as flame
00:03:23.080 00:03:23.090 through this heat exchangers filled with
00:03:25.030 00:03:25.040 water we're trying to get that
00:03:27.130 00:03:27.140 temperature so low that we condense the
00:03:29.770 00:03:29.780 flue gases and what that means is the
00:03:33.310 00:03:33.320 glue gets themselves turned back to
00:03:35.199 00:03:35.209 water
00:03:35.800 00:03:35.810 by doing that we absorb a lot more heat
00:03:38.760 00:03:38.770 out of that fire in other words all
00:03:42.580 00:03:42.590 those dollars that we're throwing into
00:03:44.410 00:03:44.420 this heat exchanger trying to extract
00:03:46.570 00:03:46.580 every dollar we tend to put into the
00:03:49.479 00:03:49.489 system to go up heat all of our terminal
00:03:52.720 00:03:52.730 devices are radiant floor and whatever
00:03:54.840 00:03:54.850 little bit different you see a lot more
00:03:56.890 00:03:56.900 controls here right basically a lot of
00:04:00.280 00:04:00.290 readouts light stuff going on there's a
00:04:02.290 00:04:02.300 lot of programming all these high
00:04:05.140 00:04:05.150 efficiency boilers basically look at
00:04:08.170 00:04:08.180 outdoor temperatures and work off the
00:04:10.150 00:04:10.160 wall it's called reset curves so on a
00:04:12.550 00:04:12.560 day when it's 40 degrees outside and you
00:04:14.680 00:04:14.690 don't need 133 or 150 degree water to
00:04:17.620 00:04:17.630 heat your system it might only make 110
00:04:20.440 00:04:20.450 degree water
00:04:21.819 00:04:21.829 the lower we can keep that water
00:04:23.439 00:04:23.449 temperature the more condenses the more
00:04:25.719 00:04:25.729 fuel dollars you save on the front yes
00:04:30.610 00:04:30.620 there's a little computer board here
00:04:31.960 00:04:31.970 this is monitoring everything that's
00:04:34.029 00:04:34.039 going out of this boiler it's it's an
00:04:36.189 00:04:36.199 it's just a flame and everything else is
00:04:38.110 00:04:38.120 trying to maximize the energy efficiency
00:04:40.779 00:04:40.789 of the unit behind the control board
00:04:45.059 00:04:45.069 over here you basically have your
00:04:51.580 00:04:51.590 typical gas valve your burner
00:04:55.390 00:04:55.400 it's the burner section here and this
00:04:58.619 00:04:58.629 missile 80,000 B 2 boiler that's the
00:05:01.930 00:05:01.940 whole heat exchanger or take open the
00:05:04.510 00:05:04.520 door what you'd find about seven or
00:05:06.279 00:05:06.289 eight of these in there actually has
00:05:09.219 00:05:09.229 water inside this coil is actually
00:05:12.040 00:05:12.050 taking transferring that flue gas into
00:05:15.820 00:05:15.830 BTUs that we put into the hydronic
00:05:17.709 00:05:17.719 heating system okay so there's a bit
00:05:20.830 00:05:20.840 more to these things but now in this
00:05:23.230 00:05:23.240 range if you're in the condensing modes
00:05:25.680 00:05:25.690 you're looking at 90 to 95% efficient
00:05:28.890 00:05:28.900 okay so that saves a lot of money long
00:05:31.540 00:05:31.550 run and something to look at that's why
00:05:34.120 00:05:34.130 a lot of this market is going to the
00:05:36.010 00:05:36.020 high efficiency oil there are different
00:05:39.490 00:05:39.500 styles of high efficiency boilers this
00:05:42.580 00:05:42.590 one here type up this is the heat
00:05:44.409 00:05:44.419 exchanger this is considered low mass
00:05:46.870 00:05:46.880 what we need my dad is really not to
00:05:49.059 00:05:49.069 wait it's more how much water is in here
00:05:53.589 00:05:53.599 how much water it's gonna do and I'm
00:05:56.320 00:05:56.330 using to transfer those BTUs this is
00:05:59.080 00:05:59.090 considered low mass as you can see this
00:06:01.930 00:06:01.940 is about 10 feet stainless steel tubing
00:06:04.600 00:06:04.610 this might hold 2 cups of water not a
00:06:08.890 00:06:08.900 lot of water
00:06:09.580 00:06:09.590 gives us a lot of heat transfer very
00:06:11.830 00:06:11.840 very quickly works well on larger
00:06:14.980 00:06:14.990 systems that kind of stuff small big
00:06:18.159 00:06:18.169 zone systems alright
00:06:20.550 00:06:20.560 kicker is you gotta be careful with
00:06:23.110 00:06:23.120 these because if you try to to turn out
00:06:26.320 00:06:26.330 little zones on it off your recycling
00:06:29.619 00:06:29.629 spoiler now as we discussed in other
00:06:31.629 00:06:31.639 videos cycling is
00:06:33.830 00:06:33.840 good for any piece of equipment so
00:06:35.360 00:06:35.370 what's some manufacturer to come up with
00:06:37.670 00:06:37.680 this book we call a large mass high
00:06:41.240 00:06:41.250 efficiency boil and that would be this
00:06:43.580 00:06:43.590 one over here on the front this
00:06:52.040 00:06:52.050 experience similar the other unit over
00:06:54.020 00:06:54.030 here okay we've got all the guests Bob
00:06:56.900 00:06:56.910 everything else down there we have a
00:06:58.939 00:06:58.949 blower motor we shoot in a tube same
00:07:02.480 00:07:02.490 thing we have here better blower motor
00:07:05.060 00:07:05.070 we've got a high efficiency gas fills
00:07:07.219 00:07:07.229 everything else blowing into and inside
00:07:10.100 00:07:10.110 here is a big tube but as you can see
00:07:16.810 00:07:16.820 it's a big tank and it is this is a
00:07:19.790 00:07:19.800 55-gallon tank which has a very large
00:07:23.570 00:07:23.580 formance heat exchanger that comes up
00:07:26.150 00:07:26.160 through the tank so what happens in this
00:07:28.940 00:07:28.950 so we get a call for heat computer same
00:07:32.930 00:07:32.940 computer system looks at it besides what
00:07:34.820 00:07:34.830 temperature should be it fills up this
00:07:37.850 00:07:37.860 tank with that temperature water
00:07:39.969 00:07:39.979 so now as our zones are calling our
00:07:43.550 00:07:43.560 carpets are calling we pulled beat to
00:07:46.909 00:07:46.919 use out of this tank and a two-week pool
00:07:49.550 00:07:49.560 these 55 gallons of BTUs down enough we
00:07:54.500 00:07:54.510 don't fire the burner what does that do
00:07:57.080 00:07:57.090 for us however earlier we discussed the
00:08:01.400 00:08:01.410 most efficient boilers one that's off
00:08:03.430 00:08:03.440 second most efficient boilers when it's
00:08:05.750 00:08:05.760 run in a steady state just sit there
00:08:08.570 00:08:08.580 cruising a lot don't turn the worst is
00:08:11.360 00:08:11.370 cycling this illuminates cycling matters
00:08:16.010 00:08:16.020 we got 55 gallons of BTUs of heat
00:08:18.589 00:08:18.599 energetic we start here so a little zone
00:08:21.290 00:08:21.300 here littles on there opens takes that
00:08:23.930 00:08:23.940 those BTUs away doesn't track the tank
00:08:27.170 00:08:27.180 temperature at all barber says I don't
00:08:30.440 00:08:30.450 need to fire you didn't use any BTUs you
00:08:32.779 00:08:32.789 lose enough keep using BTUs until you
00:08:35.600 00:08:35.610 bring it down loan up
00:08:37.149 00:08:37.159 recharge on run for 10 or 15 minutes or
00:08:40.389 00:08:40.399 20 minutes or whatever necessary and I'm
00:08:42.790 00:08:42.800 not going to click on through 20 seconds
00:08:45.040 00:08:45.050 off for 20 seconds 5 to 20 seconds so
00:08:47.980 00:08:47.990 this is considered a high efficiency
00:08:50.680 00:08:50.690 high nast boiler so there's no perfect
00:08:55.929 00:08:55.939 boil in the world if there was we'd only
00:08:57.879 00:08:57.889 be sawing one okay but there's not
00:09:00.639 00:09:00.649 you've got a look at your application
00:09:02.759 00:09:02.769 you got to look what you're trying to do
00:09:05.340 00:09:05.350 if you're looking for a low cost simple
00:09:08.679 00:09:08.689 installation simple system probably your
00:09:11.889 00:09:11.899 cast iron into your best bet if you're
00:09:14.590 00:09:14.600 looking for a smaller system
00:09:16.290 00:09:16.300 high-efficiency you don't have a lot of
00:09:18.999 00:09:19.009 zones on it not a lot of small stuff
00:09:20.860 00:09:20.870 maybe a low-mass high-efficiency boiler
00:09:24.249 00:09:24.259 be your best bet if you're looking for
00:09:27.069 00:09:27.079 something that has a lot of small zone
00:09:28.900 00:09:28.910 six flats multiple apartments that kind
00:09:32.079 00:09:32.089 of stuff you don't want to cycle the
00:09:34.840 00:09:34.850 boiler now your highness
00:09:37.240 00:09:37.250 high-efficiency boiler would be your
00:09:38.920 00:09:38.930 best bet so always look at your
00:09:40.869 00:09:40.879 application before you pick a boiler
00:09:43.269 00:09:43.279 there's not one for every there's not
00:09:45.819 00:09:45.829 one that covers
00:09:47.670 00:09:47.680 thank you
00:09:52.160 00:09:52.170

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