FlashShield Supply Sizing Question

cwaz

      I’m in the midst of dealing with a subpar contractor installing my 125k BTU boiler and wanted to verify wether the supply line he ran is sufficient.  I know it is difficult to give exact numbers without seeing the piping in my house but from what I am seeing on the tables, it isn’t even close. 

      I have a one inch line entering the house, which runs for 30’ prior to hitting the tee for the boiler. The tee reduces the line to 1/2” FlashShield CSST. It then runs 18’ to the 125k boiler. 

     The gas line then continues to serve a 40k water heater, 20k dryer and a gas range (unsure of the btu at this time)

    Is that 1/2” line enough to operate the boiler correctly?

Larry Weingarten

Hi, I don’t have easy access to the charts right now, but unless it’s running at a higher pressure, like two psi, half inch is too small.

Yours, Larry

Ps. There is a lot more to this.

pecmsg

125K is a big boiler!

EdTheHeaterMan

I believe we answered this one on your other post. 1/2" is not large enough for the sizing of your complete system. Minimum 1" Gastite. minimum 3/4. 1" for iron pipe

Rich_49

I realize this discussion is a bit old but this answer would depend upon regulator " wc and supplied pressure . It may very well be large enough