I have a rental unit and the last residents did not pay their gas bill and therefore the gas was turned off. When we finally got the unit back in order and back on the market, we needed to have the gas service returned to the home.

The gas company informed us that the gas was off for several months and therefore the lines must be bled for the gas to reignite the pilots for the furnace and water heater. Gas service has been restored but how do I bleed off any air in the lines prior to lighting the pilots? Thanks