"Hotair" > wrote in message
> FWIW, propane pressure drops to 0 psi at about -44°F. That means
> that at temps below about -30°F the vapor in the tank will not
> have enough pressure to feed the burner.

Thank you for bringing this to my attention. I've yet to experience this
propane phenomenon as my cajones turn to ice crystals at about +10 so I
have a 40 degree margin of safety.
Ed