Lennox ASH Series Installation, Operating And Maintenance Manual

Lennox ASH Series Installation, Operating And Maintenance Manual

Air cooled condensing unit

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INSTALLATION, OPERATING
AND MAINTENANCE
AIR COOLED CONDENSING UNIT
ASC/ASH
20 - 230 kW
MIL152E-1217 01/2019
www.lennoxemea.com

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Summarization of Contents

Points to Bear in Mind
Danger and Warning Signs
Identifies potential hazards like abrasive surfaces, high temperatures, and electrical voltage.
Electrical Connections Safety
Emphasizes switching off power before electrical work to prevent injury.
General Guidelines
Outlines data ownership, modification rights, and importance of following instructions.
General Characteristics
Physical Data
Details physical specifications, models, net weight, air flow, and refrigerant charge.
Electrical Data
Provides electrical consumption data for standard units and options.
Fan Performances
Details fan performance data for condensing units with optional high pressure fans.
Operating Limits
Specifies maximum and minimum operating temperatures for cooling and heating cycles.
Piping Drawings
Illustrates refrigerant piping diagrams for cooling only units.
Dimensions
Provides physical dimensions for various ASC/ASH/ADC/ADH unit models.
Installation
Preliminary Preparations
Covers essential preparations and handling procedures before unit installation.
Unit Reception
Details methods for correctly hoisting and receiving the unit.
Unit Location
Guides on selecting an appropriate location, considering sensitivity and environmental factors.
Installation Clearances
Specifies essential clearance dimensions for optimal unit performance and reliability.
Indoor Location
Offers advice for installing the unit in indoor environments, including drainage.
Refrigerant Connections
Explains standard and optional refrigerant connection procedures, including leak testing and evacuation.
Electrical Connections
Outlines electrical connection procedures and lists control element wiring specifications.
Options Installation
Covers communication capabilities and master-slave connection options for unit control.
Commissioning and Operation
Preliminary Checks Before Startup
Lists essential checks for power supply, electrical connections, and fan rotation before starting.
Preliminary Checks at Startup
Details checks for compressor rotation, pressures, oil level, and safety devices.
Maintenance
Preventive Maintenance
Outlines periodic inspections for casing, electrical connections, cooling circuit, and controls.
Corrective Maintenance
Provides recommendations for replacing components and handling refrigerant safely.
Fault Diagnosis
Lists common faults, possible causes, and solutions for unit malfunctions.
Safety Devices
Explains the ASTP compressor protection and other safety device operations.

Table of Contents