York YCAS0250 User Manual

WIRING DIAGRAM
AIR-COOLED SCREW LIQUID CHILLERS
New Release
Form 201.19-W2 (304)
YCAS AIR-COOLED LIQUID CHILLERS
YCAS0250 THROUGH YCAS0330 (3 COMPRESSOR)
YCAS0360 THROUGH YCAS0440 (4 COMPRESSOR)
STYLE G
(60 Hz)
00258VIP

York YCAS0250 Specifications

General

Model	YCAS0250
Refrigerant	R-134a
Power Supply	460V/3Ph/60Hz
Length	Varies with configuration. Consult factory drawings.
Cooling Capacity	250 tons (879 kW)

Summary

YCAS Air-Cooled Liquid Chillers Overview

Nomenclature and Model Identification

Explains the YORK chiller model number structure and characteristics.

Electrical Safety Precautions

Critical safety warnings for high and low voltage hazards during operation.

Electrical System Information and Data

Electrical Notes and Legend

Explains electrical terms, abbreviations, and provides important operational notes.

Electrical Data Tables

Provides detailed electrical specifications, including power supply and compressor data.

Power Supply Connection Options

Details on multiple and single-point power supply connections and configurations.

Wiring Diagrams: YCAS0250-YCAS0330 (3 Compressor)

Elementary Wiring Diagrams (3 Compressor)

Elementary diagrams for dual and single-point wiring options.

Across-the-Line and Wye-Delta Wiring Diagrams

Wiring diagrams for across-the-line and Wye-Delta starting methods.

DXST Starter Control Circuit Diagram

Detailed control circuit diagram for DXST starters.

Connection Diagrams and Pinouts (3 Compressor)

System, component, and connector pinout diagrams for 3-compressor units.

Wiring Diagrams: YCAS0360-YCAS0440 (4 Compressor)

Elementary Wiring Diagrams (4 Compressor)

Elementary diagrams for dual and single-point wiring for 4-compressor units.

Across-the-Line and Wye-Delta Wiring Diagrams (4 Compressor)

Wiring diagrams for starting methods on 4-compressor units.

DXST Starter and Fan Control Circuit Diagrams (4 Compressor)

Control circuit diagrams for DXST starters and fan control.

Connection Diagrams and Pinouts (4 Compressor)

System, component, and connector pinout diagrams for 4-compressor units.

Compressor Terminal Box Diagrams

Terminal Box Wiring for Systems 1-4

Wiring diagrams for compressor terminal boxes across all systems.