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York YMAA 0065 User Manual

York YMAA 0065
148 pages
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FORM NO.:6U6K-B01E-NB-EN
JOHNSON CONTROLS
1
AIR-COOLED CHILLER
AND HEAT PUMP
Supersedes: 6U6K-B01E-NA-EN
FORM NO.: 6U6K-B01E-NB-EN
INSTALLATION,COMMISSIONING,
OPERATION & MAINTENANCE
R410A
Issue Date:
February 26, 2018
YMAA / YMPA 0045-0260
AIR-COOLED CHILLER AND HEAT PUMP
50Hz
44-255kW
Cooke Industries - Phone: +64 9 579 2185 Email: sales@cookeindustries.co.nz Web: www.cookeindustries.co.nz

Table of Contents

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York YMAA 0065 Specifications

General IconGeneral
Model NumberYMAA0065
Tonnage5.5 tons
RefrigerantR-410A
Cooling Capacity65000 BTU/h
Heating Capacity68000 BTU/h
Power Supply208-230V, 1-phase, 60Hz

Summary

SECTION 1 – GENERAL INFORMATION AND SAFETY

SAFETY

Outlines the safety standards and codes the units comply with.

MISUSE OF EQUIPMENT

Highlights potential hazards and damages from improper unit operation.

Emergency Shutdown

Describes the procedure for emergency unit shutdown via the control panel.

SECTION 4 – INSTALLATION

INSTALLATION CHECKLIST

Lists essential checks to be completed before unit operation.

LOCATION AND CLEARANCES

Specifies site selection criteria and required clearances for proper operation.

CHILLED LIQUID PIPING

Details the requirements for connecting the chilled liquid piping system.

WIRING

Covers general wiring requirements and recommendations.

EMERGENCY CUTOUT BUTTON

Describes the emergency stop button for immediate shutdown.

POWER SUPPLY CONNECTION

Details the electrical power supply connections for single units.

SECTION 5 – TECHNICAL DATA

OPERATIONAL LIMITATIONS

Specifies the operating limits for temperature and flow rates.

Voltage Limitations

Outlines the absolute voltage limits to prevent compressor damage.

PHYSICAL DATA

Lists physical dimensions, weights, and capacities of the units.

ELECTRICAL DATA

Provides detailed electrical specifications for various unit configurations.

ELECTRICAL DIAGRAM

Presents the overall electrical wiring diagram for the unit.

DIP SWITCH SETTING

Explains how to configure unit settings using DIP switches.

SECTION 6 – COMMISSIONING

START-UP CHECKLIST

A comprehensive checklist for initial unit start-up.

CHECKING THE SYSTEM PRIOR TO INITIAL START (NO POWER)

Pre-start checks before applying power to the unit.

CHECKING SUPERHEAT AND SUBCOOLING

Procedures for verifying superheat and subcooling levels.

SECTION 7 – OPTIVIEW LT OPERATION

FAULT

Explains how to access, read, and reset unit and system faults.

SECTION 9 – UNIT OPERATION

CAPACITY CONTROL

Explains how the unit manages its cooling or heating load.

LIQUID TEMP. CONTROL

Explains how the unit regulates leaving or return liquid temperatures.

COMPRESSOR SEQUENCING

Details the logic for staging compressors based on run time and load.

DEFROST CONTROLS

Explains the system for removing frost from ambient coils.

SECTION 10 – SERVICE AND TROUBLESHOOTING

TROUBLESHOOTING

Provides a guide to diagnosing and resolving common unit problems.

SECTION 11 – MAINTENANCE

FAULT DEFINITIONS

Explains fault codes and their corresponding BACnet object names and classes.

VSD FAULT DEFINITIONS

Explains the fault codes specific to the Variable Speed Drive.

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