Condensate drains in attic are improper and secondary drain line from primary pan pipes to primary line after the trap, conditioned air flows outside threw pipe as it bypasses the trap which sole purpose of trap on positive pressure system is to stop this. Drain works as is however I Recommended correcting this issue and adding primary condensate float safeties for each unit. Thank you for your continued confidence. At Time of service i added condensate float safeties and fixed
