Envision NSZ Manuale di Installazione

Installation InformationWater Piping ConnectionsHot Water Generation ConnectionsElectricalStartup ProceduresTroubleshootingPreventive MaintenanceIM100

10NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL Typical open loop piping is shown below. Always maintain water pressure in the heat exchanger by placing wa

11NSZ/NDZ INDOOR SPLIT INSTALLATION MANUALSolenoid WiringWater control valves draw their power directly from a unit’s 24V transformer and can overload

12NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL NOTE: For closed loop systems with antifreeze protection, set SW2-2 to the “loop” position (see DIP Switch

13NSZ/NDZ INDOOR SPLIT INSTALLATION MANUALFigure 11: Hot Water Generator Installation in Preheat TankFigure 10: Typical Hot Water Generator Installati

14NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL Plumbing InstallationInspect the dip tube in the water heater cold inlet 1. for a check valve. If a check v

15NSZ/NDZ INDOOR SPLIT INSTALLATION MANUALElectrical DataModelRatedVoltageVoltageMin/MaxCompressor HWAPumpFLAExtLoopFLATotalUnitFLAMinCircAmpMaxFuse/H

16NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL Wiring SchematicsDual Capacity Split Wiring Schematic - 208-230/60/1HWLHPLPFD97P774-31 12 /8/08Status LE

17NSZ/NDZ INDOOR SPLIT INSTALLATION MANUALWiring Schematics cont.Single Speed Split Wiring Schematic - 208-230/60/1HWLHPLPFD97P774-30 12/8/08Status

18NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL StartupThe unit will not operate until all the inputs and safety controls are checked for normal conditions

19NSZ/NDZ INDOOR SPLIT INSTALLATION MANUALMicroprocessor Control cont.Heat, 3rd Stage (Y1,Y2,W) Single-Speed UnitsThe first stage of resistance heat i

20NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL Green "POWER" LED - module has powerRed "TRIP" LED - Thermostat "Y" demand si

21NSZ/NDZ INDOOR SPLIT INSTALLATION MANUALThe following tables show the codes that will be displayed on the different ComforTalk and FaultFlash thermo

22NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL OPERATION LOGIC HEATING COOLINGFAN ONSL1 - INONSL2 - INONSTG1 STG2 STG3 EMERG STG1 STG2 SINGLE SPEED UNITSC

23NSZ/NDZ INDOOR SPLIT INSTALLATION MANUALThe Envision series comes with a holding charge. The charge must be adjusted in the field based on performan

24NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL Leak TestingThe refrigeration line set must be pressurized and checked for leaks before purging and chargin

25NSZ/NDZ INDOOR SPLIT INSTALLATION MANUALWARNING: There are 8 total (360°) turns on the superheat adjustment stem from wide open to fully closed. Whe

26NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL Pressure/Temperature Conversion Chart for R-410APRESSURE (PSIG)TEMP °FPRESSURE (PSIG)TEMP °FPRESSURE (P

27NSZ/NDZ INDOOR SPLIT INSTALLATION MANUALCooling -- No Hot Water GeneratorEntering Water Temp °FWater Flow GPM/TonNSZ022 thru NSZ060 NSZ070 NSZ022 t

28NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL Operating Parameters cont.NDZ026 thru NDZ072 (with NAH Series Air Handler)First Stage OperationCooling -- N

29NSZ/NDZ INDOOR SPLIT INSTALLATION MANUALPressure Drop and Recommended Flow Rates30°F 50°F 70°F 90°F 110°F4 1.4 1.3 1.2 1.1 1.06 2.8 2.6 2.4 2.3 2.18

NSZ/NDZ INDOOR SPLIT INSTALLATION MANUALTable of ContentsModel Nomenclature 4Physical Chara

30NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL High voltage is correct and matches nameplate.• Fuses, breakers and wire size correct.• Low voltage wiring

31NSZ/NDZ INDOOR SPLIT INSTALLATION MANUALHeating Cycle AnalysisCOOLING TXV - ACTIVERIGHT TO LEFTClgTXVLinesetlengthMeasure liquid linetemperature and

32NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL Standard Microprocessor ControlsTo check the unit control board for proper operation:Disconnect thermostat

33NSZ/NDZ INDOOR SPLIT INSTALLATION MANUALWater Coil MaintenanceKeep all air out of the water. An open loop system 1. should be checked to ensure that

34NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL Service Parts ListSingle Speed Split Units Dual Capacity Split Units022 030 036 042 048 060 070 026 038 049

Product: Envision Series NSZ/NDZType: Geothermal/Water Source Indoor Split Heat PumpSize: 2-6 Ton Single Speed 2-6 Ton Dual CapacityDocume

4NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL Model Nomenclature1 2 3 4-6 7 8 9 10 11ND Z 049 A 1 1 A CModel Type N = Envision Coax Options C = CopperCo

5NSZ/NDZ INDOOR SPLIT INSTALLATION MANUALPhysical Dimensions Dimensions are in inches.Decorative molding and water connections extend 1.2 in. [30.5 mm

6NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL Installing and servicing heating and air conditioning equipment can be hazardous due to system pressure and

7NSZ/NDZ INDOOR SPLIT INSTALLATION MANUALA life expectancy of more than 7 years remaining for the • air handler and componentsFlush air coil and line

8NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL Dual Fuel SystemsEnvision units can be connected to fossil fuel furnaces that include an A-coil or slab coil

9NSZ/NDZ INDOOR SPLIT INSTALLATION MANUALWater PipingThe proper water flow must be provided to each unit whenever the unit operates. To assure proper