Converting Rinnai RU80ip to Natural Gas

[Santa Fe]

I have a RU80IP water heater that has never been used, but my gas is changing from Propane to NG. Rinnai gave me the part number for the conversion kit (103000028) and told me to get it online. Neither one carries this. A general google search came up empty. Any ideas on where to look for this kit?

 

[Jadnashua]

https://www.supplyhouse.com/sh/control/product/~product_id=103000028 Currently out of stock, but they say they should have it in about 2-weeks. I'd call around to local plumbing supply houses. I've done business with those people, and they have been pretty responsive, but there are other online suppliers...just try putting that part number into say google and see what you get.