Knowledgebase
Below are the specifications for a tankless hot water heater. I am installing two of these inside the mechanical room of a residence. I need the best way to vent these appliances, either separately or together. It would be best to bring the vents togethe
Posted by Elite Deals - Chris M. on 28 October 2013 12:44 PM

Our Answer:

You need 7" inner diameter B-vent pipe for your heaters, and we do carry Metal-Fab's 7" B-vent pipe: Metal-Fab Type B Round Chimney Pipe Length - 7" x 48" You would need to use elbows and tees to connect the venting for both heaters and then run the pipe out through the roof. To see all of our 7" diameter Type B vent pipe, please see this page: Type B Vent Pipe

In Response to Question:

Below are the specifications for a tankless hot water heater. I am installing two of these inside the mechanical room of a residence. I need the best way to vent these appliances, either separately or together. It would be best to bring the vents together in the attic space and only have a single hole in the roof. Natural Gas Model Number: PH-24M-DN LP Gas Model Number: PH-24M-DP Rated Gas Input (BTUs/Hr.): Full 178,500, Minimum 37,700 Dimensions (inches): 40-3/4 x 18-3/4 x 14-7/8 Empty Net Weight: 76 lbs. Minimum Working Water Pressure: Minimum 2.4 P.S.I.; Full 12.9 P.S.I. Flue Size 7-inch Diameter Vent Type Atmospherically Vented using "B" vent Gas Connection 3/4" NPT Female Water Connection 3/4" NPT Male Hot water output degree rise (U.S. gal/min) 60-degree F Rise 0.87~ 3.17 70-degree F Rise 0.75 ~ 1.17 80-degree F Rise 0.65 ~ 3.17 90-degree F Rise 0.58 ~ 3.17 100-degree F Rise 0.52 ~ 2.85

From Page: Dura-Vent Type B Type B Vent Pipe

Page ID: duravent-type-b-vent-pipe

(0 vote(s))
Helpful
Not helpful