Waterfurnace Envision Hydronic User Manual

IM1066WN 03/12Installation InformationWater Piping ConnectionsElectrical DataStartup ProceduresPreventive MaintenanceNSKW Installation ManualCertific

10NSKW INSTALLATION MANUALField Connected Water Piping cont.well, storm sewer, drain field, adjacent stream or pond, etc.). Most local codes restrict

11NSKW INSTALLATION MANUALLOAD PUMPHYDRONICLOADSource OUTP/TPortsP/TPortsBall ValveDielectricUnionsDielectricUnionsWaterFurnaceNSKW SeriesNOTES:* A 20

12NSKW INSTALLATION MANUALAlternate Hot Water Installation with Direct Coupling to a Double Wall UnitP/TPortsP/TPortsBall ValveDielectricUnionsDielect

13NSKW INSTALLATION MANUALHydronic SectionGeneral guidelines are shown below for component selection and design/installation criteria for the piping s

14NSKW INSTALLATION MANUALHydronic Section cont.Open the screw 2 turns only in the end of the pump motor (if Grundfos® pumps are used) to allow trappe

15NSKW INSTALLATION MANUAL30° 30°To Geo 150 cm Dip TubeApprox. 2.54 cmT & PVALVEFrom GeoPRIMARY ANODE99 cm - 80 Gallon106.7 cm - 119 GallonCO

16NSKW INSTALLATION MANUALNSKW Control BoxTransformerRun Capacitor (Single Phase Only)Ground LugLoad Pump RelayTerminal BoardPower BlockTerminal Power

17NSKW INSTALLATION MANUALElectrical Data cont.ElectricalBe sure the available power is the same voltage and phase as that shown on the unit serial pl

18NSKW INSTALLATION MANUALWiring SchematicsHeating Only - 240/50/197P798-14 01/19/12 TransformerNOTE 1Red208V BlackComCompressorUnitPower S

19NSKW INSTALLATION MANUALWiring Schematics cont.NSKW Reversible with IntelliStart - 240/50/197P798-16 01/19/12 TransformerNOTE 1Red208 VC

20NSKW INSTALLATION MANUALWiring Schematics cont.Reversible - 380-420/50/3Blk/WhtYellowTTTTELTLLTLSTLFDTSFPTESTBrown (41)Brown (42)White (43)Wht/Blu (

21NSKW INSTALLATION MANUALWiring Schematics cont.Reversible - 380-420/50/3 cont.Blk/WhtYellowTTTTELTLLTLSTLFDTSFPTESTBrown (41)Brown (42)White (43)Wht

22NSKW INSTALLATION MANUALNSKWs come with a factory installed control board that is capable of receiving commands from the internal controller provide

23NSKW INSTALLATION MANUALY1 = Compressor call R = 24VACCGW1LX1Y2OY1W2SX2RControl BoxTypical AquastatSecondary Unit(SL=1)Aquastat Wiring for Dedicate

24NSKW INSTALLATION MANUALStaging with Primary/Secondary ModeStaging is only possible with dedicated heating or cooling units. Reversible units cannot

25NSKW INSTALLATION MANUALConverting to a Dedicated Cooling UnitProcedure to Convert a Heating Only Unit to a Cooling Only UnitAll non-reversible NSKW

26NSKW INSTALLATION MANUALUnit StartupBefore Powering UnitCheck the following:• High voltage wiring is correct and matches the nameplate.• Fuses, br

27NSKW INSTALLATION MANUALStandard Board - Control FeaturesAnti Short Cycle TimeThe anti short cycle time consists of a three minute minimum “off” tim

28NSKW INSTALLATION MANUALNo-Retry Faults High Temperature, Water Temperature Probe Open, Water Temperature Probe Closed and Brown Out faults prevent

29NSKW INSTALLATION MANUALThe control panel allows you to access the service menu on the unit. The control panel has three 7-segment LED screens that

NSKW INSTALLATION MANUALTable of ContentsModel Nomenclature... 4BS EN 14511-2 Performance Rati

30NSKW INSTALLATION MANUALStandard Control - Panel Configuration cont.Remote Aquastat Secondary Mode (Y1)In secondary mode the compressor output is det

31NSKW INSTALLATION MANUALFX10 ControlThe FX10 control provides unparalleled capability in several areas including performance monitoring, energy mana

32NSKW INSTALLATION MANUALFX10 Advanced Control Overview• The Johnson Controls FX10 board is specifically designed for commercial heat pumps and prov

33NSKW INSTALLATION MANUALFX10 Microprocessor and BAS SystemThe FX10 is a microprocessor based control that not only monitors and controls the heat pu

34NSKW INSTALLATION MANUALFreeze DetectionThe freeze detection sensor will monitor the liquid refrigerant temperature entering the water coil in the h

35NSKW INSTALLATION MANUALInputs and Outputs ConfigurationField Selectable OptionsLoad and Source Freeze Detection SetpointThe freeze detection setpoi

36NSKW INSTALLATION MANUALHEL/s x 4.2*Reference CalculationsHeating Calculations:Cooling Calculations:LWT = EWT + HRL/s x 4.2*LWT = EWT - NOTE: * Whe

37NSKW INSTALLATION MANUALFlow RatesThermistor Temperature (°C) Resistance (Ohms)26.0 9,230 - 10,00725.3 9,460 - 10,03224.7 9,690 - 10,58024.2 9,930 -

38NSKW INSTALLATION MANUALOperating ParametersHeating ModeEnteringLoad Temp (°C)EnteringSource Temp (°C)SuctionPressure (kPa)Discharge Pressure (kPa)S

39NSKW INSTALLATION MANUALCatalog performance can be corrected for antifreeze use. Please use the following table and note the example given.Antifreez

Model Nomenclature1-4NSKW5-6087R869010211C12C13-14SS15AModel NSKW = Envision Series 50Hz Hydronic Heat PumpCapacity (kW Output) 06 08 12 17Operati

40NSKW INSTALLATION MANUALTroubleshooting Guideline for Refrigerant CircuitThe chart below will assist in determining if measurements taken at the uni

41NSKW INSTALLATION MANUALHeating Cycle AnalysisSuctionDischargeCompressorRVSourceCoaxFD______kPa = ______SAT°C______°C______kPa = ______SAT°C______°

42NSKW INSTALLATION MANUALCheck One Start up/Check-out for new installation ❑ Troubleshooting Problem:__________________________________

43NSKW INSTALLATION MANUALTroubleshootingShould a major problem develop, refer to the following information for possible causes and corrective steps:C

44NSKW INSTALLATION MANUALTroubleshooting cont.DISPLAY FAILURE DIAGNOSTICDCFreeze detection thermistor is closed (shorted) Replace the freeze detectio

45NSKW INSTALLATION MANUALPreventive Maintenance1. Keep all air out of the water lines. An open loop system should be checked to ensure that the well

46NSKW INSTALLATION MANUALService PartsPart Description 06 08 12 17Refrigeration ComponentsCompressor 220-240/50/1 34P568-06 34P621-02 34P580-02 34P61

Manufactured byWaterFurnace International, Inc.9000 Conservation WayFort Wayne, IN 46809www.waterfurnace.comIM1066WN 03/12Certificate Number NQA ‘00

5NSKW INSTALLATION MANUALBS EN 14511-2 Performance RatingsHeating PerformanceModelB0/W35 W10/W35 B0/W45 B5/W35 W10/W45 Capacity Output kW COP Power I

6NSKW INSTALLATION MANUALSafety ConsiderationsInstalling and servicing air conditioning and heating equipment can be hazardous due to system pressure

7NSKW INSTALLATION MANUALDimensional DataModelOverall Cabinet Water ConnectionsElectrical KnockoutsJ K LA B C D E F G H I1/2 in. cond3/4 in. cond3/4 i

8NSKW INSTALLATION MANUALGeneralNSKW heat pumps may be successfully applied in a wide range of residential and light commercial applications. It is th

9NSKW INSTALLATION MANUALto determine the flow rate. These ports should be located adjacent to the supply and return connections on the unit. The prop