<br> Greeted Steve, and proceeded to perform a PTU on a Peerless gas Navien boiler. I replaced the oil tank filter along with the oil pump strainer. I removed the gun assembly, degreased, scrubbed and cleaned. I replaced the nozzle with a 70/75A. Checked and inspected the electrodes, made adjustments. I reassembled the gun assembly, restored power, fired up the boiler, and bled the oil lines. I observed the boiler run, cycle and reach temperature. customer approved to move with the option that the tech recommended. Customer is satisfied with today's PTU.