Water heater leaking upon arrival. All copper connections are dry. Pressure relief valve is dry. No blockages in drain lines. Found water leaking from drain trap. Spoke to manufacture, we believe that the condensate trap is failed. Will order part and replace trap when parts arrive. Also collected half down for repair, (279). Looked at unit heater in garage. Customer stated how the burners would not fully light and cross over. All orifices were replaced and gas valve was also converted to lp. 16.50†incoming pressure and 11.00†outlet pressure. A blow of air lights all burners. There may be issues with burners due to them not all lighting. Left manufacture voicemail. Will follow up when I get a answer from them.