Envision Peripherals R-410A installation manual Water Quality

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ENVISION RESIDENTIAL INSTALLATION MANUAL

Water Quality

In ground water situations where scaling could be heavy or where biological growth such as iron bacteria will be pres- ent, a closed loop system is recommended. The heat exchanger coils in ground water systems may, over a period of time, lose heat exchange capabilities due to a buildup of mineral deposits inside. These can be cleaned, but only by a qualiﬁed service mechanic, as special solutions and pumping equipment are required. Desuperheater coils can likewise become scaled and possibly plugged. In areas with extremely hard water, the owner should be informed that the heat exchanger may require occasional ﬂushing.

Units with cupronickel heat exchangers are recommended for open loop applications due to the increased resistance to build-up and corrosion, along with reduced wear caused by acid cleaning.

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Contents Envision Residential Installation Manual Voltage Model NomenclatureTable of Contents Moving and Storage General Installation InformationSafety Considerations Installing Vertical UnitsHorizontal Unit Mounting Installing Horizontal UnitsWater Piping Duct SystemWater Quality Condensate Drain Freeze ProtectionMultiple Units on One Flow Center Closed Loop Ground Source SystemsSolenoid Valve Open Loop Ground Water SystemsWater Tank Preparation Desuperheater ConnectionsDesuperheater Startup Plumbing InstallationGeneral Unit Power ConnectionAccessory Relay Electrical ConnectionsElectronic Thermostat Pump WiringAuxiliary Heat Ratings Single speed with ECM motor Unit Electrical DataFan Performance Data PSC Setting Fan Speed PSCPerforming this operation Fan Performance Data ECM Setting Fan Speed ECMTop Air Discharge Vertical Dimensional DataTOP View Horizontal Dimensional DataLeft Return BottomﬂowSingle Speed Physical Data Single SpeedDual Capacity Physical Data Dual CapacityEnvision Single Speed Wiring Schematic 208-230/60/1 Wiring SchematicsEnvision Single Speed Wiring Schematic 208-230/60/1 ECM 97P774-01 6/29/06 Unit Power 208-230/60/1 Envision Dual Capacity Wiring Schematic 208-230/60/1- ECM97P774-02 6/29/06 Microprocessor Control Cooling Operation ECM2 Airﬂow Selection DIP Switches SW1Heat, 3rd Stage Y1,Y2,W Dual Capacity Units Emergency Heat W onlyComfort Alert Flash Codes Compressor Monitoring/Comfort AlertThermostat Displays Fault FlashComforTalk Description OFF Position DIP Switch SettingsUnit Startup Before Powering Unit, Check The FollowingStartup Steps PSC Operation Logic DataSingle Speed Models Unit Operating ParametersFirst Stage Operation Dual Capacity ModelsGPM Pressure DropRefrigerant Systems TroubleshootingLED Deﬁnitions and Diagnostics Standard Microprocessor ControlsReplacement Procedures Preventive MaintenanceManufactured by WFI 9000 Conservation Way Fort Wayne,