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TABLE OF CONTENTS PAGE SAFETYCONSIDERATIONS ......................... 1 INTRODUCTION ................................... 2 RECEIVINGANDINSTALLATION .................. 2- --9 CheckEquipment .................................. 2 IdentifyUnit .................................... 2 InspectShipment................................. 2 ProvideUnitSupport ............................... 2 RoofCurb ...................................... 2 SlabMount ..................................... 2 ProvideClearances ................................. 2 RigandPlaceUnit ................................. 6 Inspection ...................................... 6 Rigging/LiftingofUnit ............................ 6 SelectandInstallDuctwork........................... 7 ConvertingHorizontalDischargeUnitstoDownflow (Vertical)DischargeUnits .......................... 7 ProvideforCondensateDisposal ...................... 8 InstallElectricalConnections ......................... 8 High- --VoltageConnections ......................... 8 SpecialProceduresfor208- --VOperation............... 9 ControlVoltageConnections........................ 9 StandardConnections ............................. 9 TransformerProtection ............................ 9 AccessoryElectricheatersInstallation................. 9 SequenceofOperation ............................ 9 PRE- --START- --UP ................................... 17 START--UP..................................... 17--20 CheckingCooling&HeatingControlOperation........ 17 CheckforRefrigerantLeaks ......................... 17 Start- --Up Adjustments ............................. 17 Checking&AdjustingRefrigerantCharge ............ 18 IndoorAirflow&AirflowAdjustments .............. 18 ContinuousFanOperation ........................ 19 DefrostControl ................................... 20 QuietShift..................................... 20 Defrost ....................................... 20 MAINTENANCE................................ 21- --26 AirFilter ........................................ 21 IndoorBlowerandMotor ........................... 21 OutdoorCoil,IndoorCoil,&CondensateDrainPan ...... 23 OutdoorFan ..................................... 24 ElectricalControlsandWiring ....................... 24 RefrigerantCircuit................................. 24 IndoorAirflow ................................... 24 MeteringDevices- --TXV& Piston .................... 24 PressureSwitches ................................. 25 LossofChargeSwitch ............................. 25 HighPressureSwitch .............................. 25 CopelandScrollcompressor(PuronRefrigerant) ......... 25 RefrigerantSystem ................................ 25 Refrigerant .................................... 25 CompressorOil ................................. 26 A09033 Fig. 1 - --Unit 607- --- --A ServicingSystemsonRoofswithSyntheticMaterials.... 26 LiquidLineFilterDrier ........................... 26 PuronR (R- --410A)RefrigerantCharging ............. 26 SystemInformation................................ 26 LossofChargeSwitch............................ 26 CheckDefrostThermostat......................... 26 TROUBLESHOOTING .............................. 26 START- --UPCHECKLIST ............................ 26 VERTICALECONOMIZER ....................... 30- --50 General ......................................... 30 Accessories ...................................... 30 Installation ................................... 30- --36 SmallChassis ............................... 30- --31 LargeChassis ............................... 34- --36 CONFIGURATION .............................. 37- --45 OPERATION ...................................... 47 TROUBLESHOOTING .............................. 48 SAFETY CONSIDERATIONS Installationandservicingofthisequipmentcanbehazardousdue to mechanical and electrical components. Only trained and qualifiedpersonnelshouldinstall,repair,orservicethisequipment. Untrainedpersonnelcanperformbasicmaintenancefunctionssuch as cleaning and replacing air filters.All otheroperations mustbe performed by trained service personnel. When working on this equipment, observe precautions in the literature, on tags, and on labels attached to or shipped with the unit and other safety precautionsthatmayapply. Follow all safety codes. Wear safety glasses, protective clothing, and work gloves. Use quenching cloth for brazing operations. Have a fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions included in literatureandattachedtotheunit.Consultlocalbuildingcodes,the currenteditionsoftheNationalElectricalCode(NEC)NFPA70. In Canada refer to the current editions ofthe Canadian Electrical CodeCSAC22.1. 1 607CA607CA Recognize safety information. This is the safety- --alert symbol . When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury. Understand these signal words: DANGER, WARNING, and CAUTION. These words are used with the safety- --alert symbol. DANGER...