Waterfurnace Series NXW Manuel d'utilisateur

IM2552WN 11/14Installation InformationWater Piping ConnectionsElectrical DataMicroprocessor ControlStartup ProceduresPreventive MaintenanceNKW Rever

10ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALGeneralSystem piping should be kept as simple as possible to minimize the pressure drop, bu

11ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALEnvision2 NKW Typical PipingFSBrazed PlateHeat Exchanger Isolation ValvesIso

12ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALEnvision2 NKW Application Data1.0. Minimum Fluid VolumeA. Water-to-water heat pumps requir

13ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALEnvision2 NKW Application Data cont.1.6. InsulationA. Heat pumps are built with factory in

14ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALSystem Cleaning and FlushingCleaning and FlushingPrior to start up of any heat pump, the wa

15ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALElectrical DataCompressor Protection ModuleAn electronic protection module is provided with

16ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALElectrical Data cont.Figure 6: Control BoxTransformerFused / Non-Fused DisconnectPower Supp

17ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALWiring SchematicsChiller with IntelliStartT1T2T3S1S2Earth GroundBlueBluePage 124VTransforme

18ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALWiring Schematics cont.Chiller with Phase GuardT1T2T3S1S2Earth GroundBlueBluePage 124VTrans

19ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALTB Typical AquaStat24VAC24V COMComp 1Comp 2Rev ValveAcc 2Acc 1AlarmCircuit 1 AlarmCircuit 2

20ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALField Wiring and Control Setup cont.Accessory Relay SetupThe accessory output set to “close

21ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALControl FeaturesAdvanced Freeze Detection Operation: “Pre Freeze” AlarmPredictive freeze co

22ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALControl Features cont.minimum on time does not apply if the high-pressure switch trips. The

23ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALControl Features cont.• When the controlling temperature sensor is set to select the Load

24ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALPower Fail RestartWhen the controller is first powered up, the outputs will be disabled for

25ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALInputs and Outputs Confi gurationDUAL STAGE WW Input Name Input Output Name Output Entering

26ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALUnit Display and Interface Cont.MUI Menu NavigationWelcomeInfo Temp Stat Outputs Settings M

27ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALMenu and Menu ContentsAlarm• Displays unit alarms until the unit has been reset (Unit alar

28ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALReference CalculationsVerify the following:• High voltage is correct and matches nameplate

29ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALOperating ParametersHeating ModeEnteringLoad Temp (oC)EnteringSource Temp (oC)SuctionPressu

NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALTable of ContentsModel Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

30ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALPressure DropNote: Pressure drop is the same for load and source heat exchangers at 30°F fl

31ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALCompressor ResistanceThermistor ResistanceOperating LimitsOperating LimitsCooling Heating(°

32ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALShould a major problem develop, refer to the following information for possible causes and

33ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALHeating Cycle AnalysisCooling Cycle AnalysisSuctionDischargeCompressorRVBraze PlateBraze Pl

34ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALEnvision2 NKW Troubleshooting FormCheck One Start up/Check-out for new installation

35ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALNKW Factory StartupJob Site Recording Process 1. Complete the top of the NKW St

36ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALNKW Pre-Start-Up ChecklistCHILLER PRE-START-UP CHECKLISTDate:Project Name: Mechanical Cont

37ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALStart-up Date Unit Model # Size:Unit T

38ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALUnit Heat Exchanger Maintenance1. Keep all air out of the water or antifreeze solution.2.

39ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALService Parts ListPart Description120 180 240 360 600380-400/50/3 380-400/50/3 380-400/50/3

4ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALModel NomenclatureNKW 090 R 7 A E 8 N N1-3 4-6 7 8 11 12 13Model NKW – Envision2 Series

40ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALPages: Description: Date: By:All First Published 06 Nov 2014 MARevision Guide

Manufactured byWaterFurnace International, Inc.9000 Conservation WayFort Wayne, IN 46809www.waterfurnace.com©2014 WaterFurnace International, Inc., 90

5ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALSafety ConsiderationsInstalling and servicing air conditioning and heating equipment can be

6ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALGeneral Installation Information cont.701616576.21211338912.76.35NumberCompatible WithSpring

7ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALPhysical DimensionsSOURCEWATER OUTSOURCEWATER INLOADWATER INLOADWATER OUTCONTROL BOX COVERMA

8ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALPhysical Dimensions, cont.KLNMPRADETAIL AS635609.61320.8609.6TSEE DETAIL BELOWDimensional D

9ENVISION2 NKW 50Hz REVERSIBLE CHILLER INSTALLATION MANUALPhysical DataModel CompressorRefrigerant Charge*Total WeightShipping Installed120Scroll (2)5