York R-407C manual SINGLE-POINT Power Supply Wiring With NON-FUSED Disconnect

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Power Wiring (continued)

SINGLE-POINT POWER SUPPLY WIRING

WITH NON-FUSED DISCONNECT

Field Power Supply

NOTES:

Electrical / Controls Box

Power Side

Molded	1L1 1L2 1L3				GND
Case	1L1 1L2 1L3				GND
Disconnect
Disconnect
Switch
Switch

Line 1

Line 2

Line 3

Earth

Ground

Control Side

Wiring Terminal

Block

LD06415

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. 3 – SINGLE-POINT POWER SUPPLY WIRING WITH NON-FUSED DISCONNECT

32	YORK INTERNATIONAL

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Contents Packaged Rooftop Air Conditioning Units 407C Optimized Through 65 TonsTable of Contents Nomenclature Basic Model NumberEcological and Economical Design FEATURES/BENEFITSIntroduction Reliable Scroll Compressor Technology ServiceabilityInstall with Ease and Safety Introduction Physical Data Physical DataPhysical Data Cont’d Application Data LocationRigging EconomizerRoof Curb Harsh Environments Condenser and Evaporator Coil ProtectionBuilding Exhaust Systems Selection Procedure Acoustical ConsiderationsGiven 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 50 Through 65 TON Supply FAN Data CONT’D Fan Performance50 Through 65 TON Supply FAN Data 50 Through 65 TON Exhaust FAN Data Component Static Pressure Drops Inches of Water Column Filters Economizer Economizer Dampers Rigid Filter Manual or Electrical Service Sizing Electrical DataLoad Definitions CompressorsSupply and Exhaust FAN Motor ODP or Tefc High EfficiencyPremium Efficiency Condenser FAN Motors / EachUnoccupied / Occupied Switching ControlsControl Sequences for ALL Units GeneralVentilation Control Sequences Exhaust Control SequencesLOW Ambient Operation Smoke Purge SequencesVAV Specific Sequences Cooling OperationStand Alone Control CV Specific SequencesCooling Operation Thermostat Control Stage 1 Y1 CallPower Wiring SINGLE-POINT Power Supply 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 WiringBottom Supply Bottom Return General ArrangementDrawing Left or Right Rear Return Supply General Arrangement DrawingCurb Layout Drawing Curb Layout DrawingGuide Specifications ConstructionSupply AIR System Bearings and DrivesPower Supply AIR Filtering SystemAIR Inlet System Refrigeration SystemEconomizers Accessories and OptionsControls Relief System Evaporator Coil ProtectionCondenser Coil Protection Suction and Discharge Pressure Transducers moniYork International York International Proud Sponsor Olympic Team