Arrived at location on 3/15/22 - Checked over unit. Found pilot lit but no flow pass safety upon further inspection found issue with safety and thermocouple. Will need to order and return. Returned to location on 3/23/22 - Installed gas shut off valve. Installed new thermocouple. Installed new 1/2” pipe nipple to accommodate smaller safety valve. Checked for leaks and operations. Energized and checked operations unit operating normally at this time.