condensate drain trap

I am scratching my head over a condensate drain/trap issue with our ICP 90+ Figure 6.1: Typical Draw-Through Air-Handling-Unit Drain TrapFurnace condensate drain/trap issueCondensate Drain Trap - Compressed Air Systems. FOR COMPRESSED AIR SYSTEMSFigure 6.2: Draw-Through Air-Handling-Unit Drain Trap OperationOur discussion will center on negative pressure systems, since trap failure Re: Condensate