brianharrison
Well-known member
I have the Auto change over valve on my DS. The indicator for the tank on the DS has always read true as to the fullness of that tank, the indicator has never worked well for the tank on the ODS. Usually reads 1/2 to 3/4 full when new refilled tank installed and quickly indicates empty even when frost/condensation line indicates 1/2 full. My question is, why is there a pressure valve in the line from the ODS but not one on the DS line? Does this reduction of pressure in the ODS affect the indicator?
There should be a pressure regulator (red in color) on one side (mine is on the DS) that reduces to 30 psi and then into the regular built into the switch over valve (mine is on the ODS) that reduces to about 11" water column (WC), what the end devices need the gas regulated to....
Not sure what code or exact reason for the high pressure (red) regulator, but it may be for code or design conditions - ie hose/pipe across the unit to the ODS.
Brian