Intertherm mobile home furnace gas valve/burner
I am the third person attempting to repair a problem with a Intertherm 1155 natural gas furnace, manufactured in '73. The problem is, that the pilot extinguishes when the burner shuts down. Someone else has replaced the gas valve with a universal type. The vent tube is in place, in the pilot assembly, but it is not connected to the gas valve vent port. It is too short, so someone just left it unconnected. Does this have to do with the problem of the burner taking out the pilot during shut down? I have replaced the entire pilot assembly and thermocouple with a factory replacement. It has a nice blue flame, encasing the upper third of the thermocouple. How important is the vent tube in the operation of the cycle of the burner? Thank you !