York R-407C manual DUAL-POINT Power Supply Wiring

Page 33

FORM 100.50-EG1

DUAL-POINT POWER SUPPLY WIRING

Field Power Supply #2

Field Power Supply #1

NOTES:

Electrical / Controls Box

Power Side

TB2 TB1

2L1 2L2 2L3				GND		1L1 1L2 1L3				GND

Line 1

Line 2

Line 3

Earth

Ground

Line 1

Line 2

Line 3

Earth

Ground

Control Side

Wiring Terminal

Block

LD06416

1.All field wiring must be provided through a field-supplied fused disconnect switch to the unit terminals (or optional molded disconnect switch).

2.All electrical wiring must be made in accordance with all N.E.C. and/or local code requirements.

3.Minimum Circuit Ampacity (MCA) is based on U.L. Standard 1995, Section 36.14 (N.E.C. Section 440.34).

4.Maximum Dual Element Fuse size is based on U.L. Standard 1995, Section 36.15 (N.E.C. Section 440.22)

5.Use copper conductors only.

6.On units with an optional disconnect switch, the supplied disconnect switch is a “Disconnecting Means” as defined in the N.E.C. Section 100, and is intended for isolating the unit from the available power supply to perform maintenance and troubleshooting. This disconnect switch is not intended to be a Load Break Device.

FIG. 4 – DUAL-POINT POWER SUPPLY WIRING

YORK INTERNATIONAL

33

Image 33

Contents 407C Optimized Through 65 Tons Packaged Rooftop Air Conditioning UnitsTable of Contents Basic Model Number NomenclatureFEATURES/BENEFITS IntroductionEcological and Economical Design Serviceability Install with Ease and SafetyReliable Scroll Compressor Technology Introduction Physical Data Physical DataPhysical Data Cont’d Location Application DataRigging EconomizerHarsh Environments Condenser and Evaporator Coil Protection Building Exhaust SystemsRoof Curb Acoustical Considerations Selection ProcedureGiven Select UnitCooling Performance Data 50 TON Model Cooling Performance Data 50 Ton ModelCooling Performance Data 50 TON Model CONT’D Cooling Performance Data 55 TON Model Cooling Performance Data 55 Ton ModelCooling Performance Data 55 TON Model CONT’D Cooling Performance Data 60 TON Model Cooling Performance Data 60 Ton ModelCooling Performance Data 60 TON Model CONT’D Cooling Performance Data 65 TON Model Cooling Performance Data 65 Ton ModelCooling Performance Data 65 TON Model CONT’D Fan Performance 50 Through 65 TON Supply FAN Data50 Through 65 TON Supply FAN Data CONT’D 50 Through 65 TON Exhaust FAN Data Component Static Pressure Drops Inches of Water Column Filters Economizer Economizer Dampers Rigid Filter Manual or Electrical Data Electrical Service SizingLoad Definitions CompressorsHigh Efficiency Supply and Exhaust FAN Motor ODP or TefcPremium Efficiency Condenser FAN Motors / EachControls Unoccupied / Occupied SwitchingControl Sequences for ALL Units GeneralExhaust Control Sequences Ventilation Control SequencesSmoke Purge Sequences LOW Ambient OperationCooling Operation VAV Specific SequencesCV Specific Sequences Stand Alone ControlCooling Operation Thermostat Control Stage 1 Y1 CallSINGLE-POINT Power Supply Wiring Power WiringSINGLE-POINT Power Supply Wiring with NON-FUSED Disconnect SINGLE-POINT Power Supply Wiring With NON-FUSED DisconnectDUAL-POINT Power Supply Wiring DUAL-POINT Power Supply WiringField Control Wiring Field Control WiringGeneral Arrangement DrawingBottom Supply Bottom Return General Arrangement Drawing Left or Right Rear Return SupplyCurb Layout Drawing Curb Layout DrawingConstruction Guide SpecificationsSupply AIR System Bearings and DrivesAIR Filtering System Power SupplyAIR Inlet System Refrigeration SystemAccessories and Options ControlsEconomizers Evaporator Coil Protection Relief SystemCondenser Coil Protection Suction and Discharge Pressure Transducers moniYork International York International Proud Sponsor Olympic Team