Daikin MPS015 F Installation And Maintenance Manual

Contents

meChanICal InsTallaTIonFigure 10: Rigging the Unit (MPS 026– 035 Example)Figure 11: Rigging the Unit (MPS 040–050 Example)Condensate Drain Pipe ConnectionThe unit is provided with a 1" male NPT condensate drainconnection. For proper drainage, level the unit and drain panside to side and install a P-trapFigure 12 shows the layout of the condensate drainconnection. The distance from the drain pan outlet to thehorizontal run of the P-trap should be a distance of twice thestatic pressure in the drain pan.Example: If the static pressure as measured in the drain panis 1.5", then the distance between the drain outlet and thehorizontal run should be 3".Draining condensate directly onto the roof may be acceptable;refer to local codes. Provide a small drip pad of stone, mortar,wood, or metal to protect the roof against possible damage.If condensate is piped into the building drainage system, pitchthe drain line away from the unit a minimum of 1/8" per foot.The drain line must penetrate the roof external to the unit.Refer to local codes for additional requirements. Sealed drainlines require venting to provide proper condensate flow.Where the cooling coils have intermediate condensate pans onthe face of the evaporator coil, copper tubes near both ends ofthe coil supply drainage to the main drain pan. Verify the tubesare in place and open before putting the unit into operation.Periodically clean to prevent microbial growth/algae buildupfrom plugging the drain and causing the drain pan to overflow.Clean drain pans to prevent the spread of disease. Cleaningshould be performed by qualified personnel.WARNINGDrain pans must be cleaned periodically. Material in uncleaneddrain pans can cause disease. Cleaning should be performedby qualified personnel.Figure 12: Condensate Drain ConnectionL1L2L3L4BA CE GDFHPressure(P)atthedrainpan2P2PmeChanICal InsTallaTIonwww.DaikinApplied.com 15 IM 1058-8 • MAVERICK II ROOFTOP SYSTEMS