[TheForge] Gas heater question

Andrew Vida osan at netlabs.net
Thu Nov 21 18:06:25 EST 2013


On 11/20/13, 9:19 AM, Paul Sperbeck wrote:

> What pressure is your natural gas delivered at? I needs to be around 
> 7" of water coulomb or 1/4 PSI.

Right at 7" coming into the house.
>
> Most appliance regulators can handle the input pressure from natural 
> gas, which is normally delivered at 7" of water coulomb, or propane 
> which is normally piped inside the building at 11" of water coulomb. 
> The appliance regulator will then reduce either of those to about 3.5" 
> of water column to supply the jets.
>
> Use the chart to get the size you need:
> http://www.hvacredu.net/gas-codes/module2/Gas%20Orifice%20Capacity%20Chart.pdf 
>

That is just what I needed.  Thank you Paul.  Looks like I will need to 
open the existing orifice to a 42.
>
> Use the btu of each propane burner and then look up that btu for 
> natural gas and see what size the orifice is.
>
> Your propane dealer may have jets available if he pulled them from a 
> conversion and plays well with others...
>
> paul
Thanks again.


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