Zimm0who0net
Member
So I'm confused a bit on how to calculate gas line size when the there are multiple different sizes of pipe in the mix.
I'm feeding a 150k BTU tankless water heater (that is the only thing on this branch). I've already got 125' of 1-1/4" poly. I've got another 25 feet to go inside the structure. I'm thinking about necking down to a 1" CSST, but I don't know the proper math here to determine what size that last stretch needs to be. Could someone help me out here?
I'm feeding a 150k BTU tankless water heater (that is the only thing on this branch). I've already got 125' of 1-1/4" poly. I've got another 25 feet to go inside the structure. I'm thinking about necking down to a 1" CSST, but I don't know the proper math here to determine what size that last stretch needs to be. Could someone help me out here?