00:00:00.030 hey it's mark from supply house calm and 00:00:02.51000:00:02.520 in this video we're going to talk about 00:00:03.83000:00:03.840 exhaust gas venting for boilers and 00:00:06.80000:00:06.810 water heaters for gas and oil powered 00:00:09.47000:00:09.480 boilers and water heaters you need to 00:00:11.27000:00:11.280 select the venting system that will work 00:00:13.03900:00:13.049 in your home chimney vented units vent 00:00:15.23000:00:15.240 exhaust naturally through a chimney 00:00:16.97000:00:16.980 power vent and direct then use fans to 00:00:19.37000:00:19.380 push exhaust through vent pipes and can 00:00:21.41000:00:21.420 usually be vented either vertically 00:00:23.06000:00:23.070 through a roof or horizontally through a 00:00:24.95000:00:24.960 sidewalk some direct vent water heaters 00:00:27.29000:00:27.300 don't actually need fans the difference 00:00:29.59900:00:29.609 between power and direct vent is that 00:00:31.58000:00:31.590 direct vent units pull intake combustion 00:00:33.83000:00:33.840 air from outdoors and can be placed in 00:00:35.84000:00:35.850 any room while power vent units use air 00:00:38.06000:00:38.070 from inside and can only be installed in 00:00:40.31000:00:40.320 open rooms and cannot be put in type 00:00:42.31900:00:42.329 closets or crawl spaces direct vent 00:00:44.51000:00:44.520 units can either use a concentric vent 00:00:46.40000:00:46.410 so only one wall penetration is needed 00:00:48.77000:00:48.780 or separate intake and exhaust pipes 00:00:51.02000:00:51.030 some boilers and select few water 00:00:53.36000:00:53.370 heaters have condensing style venting 00:00:55.18900:00:55.199 and are highly efficient these units 00:00:57.22900:00:57.239 however have special venting 00:00:58.58000:00:58.590 requirements due to the acidity of the 00:01:00.43900:01:00.449 condensate they produce they use direct 00:01:02.56900:01:02.579 venting and work with PVC vent pipe due 00:01:04.85000:01:04.860 to the lower exhaust temperatures for 00:01:07.16000:01:07.170 more information visit the resources at 00:01:09.17000:01:09.180 the playoffs com or email us with any 00:01:11.75000:01:11.760 questions
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