Daikin McQuay AWS210BDS User Manual (English)

Brand	Daikin McQuay
Model	AWS210BDS
Category	Chiller
Language	English

Indicates a hazardous situation that will result in death or serious injury if not avoided.

WARNING Warnings

Indicates potentially hazardous situations that can result in property damage, severe personal injury, or death.

CAUTION Warnings

Indicates potentially hazardous situations which can result in personal injury or equipment damage.

Introduction

General Description of Pathfinder Chillers

Overview of Daikin McQuay Pathfinder™ air-cooled chillers, components, and features.

Remote Evaporator Models Overview

Information on AWS non-VFD and VFD models available as remote evaporator units.

Equipment Inspection Upon Arrival

Instructions for checking shipments for completeness and damage upon arrival.

Installation and Startup Procedures

Sharp Edge and Coil Safety

Warnings related to sharp edges and coil surfaces, and potential injury hazards.

Refrigerant Release Safety

Warnings about escaping refrigerant, suffocation hazards, and ignition sources.

Handling and Lifting Dangers

Dangers associated with improper lifting or moving of the unit, potential for severe injury or death.

Unit Location Requirements

Guidelines for locating the unit outdoors, considering proper airflow and prevailing winds.

Service Access Points

Description of locations for accessing components like compressors, filter-driers, and control panels.

Clearance Requirements for Unit Installation

Specifies minimum side and front clearances for proper unit operation, airflow, and maintenance.

Managing Restricted Air Flow

Features and considerations for units with restricted airflow due to site limitations like fences or walls.

Unit Placement: Building or Wall on One Side

Discusses hot air recirculation effects and placement recommendations for units near walls.

Unit Placement: Two Units Side By Side

Addresses performance adjustments when units are spaced closer than 12 feet apart.

Unit Placement: Three or More Units Side By Side

Details adjustment factors for inside units influenced by adjacent units on both sides.

Installation: Open Screening Walls

Design considerations for decorative screening walls to avoid performance adjustments.

Installation: Pit or Solid Wall Considerations

Addresses operating problems like recirculation and restriction in pit or solid wall installations.

Chilled Water Piping Design

Key requirements for chilled water piping design, including vibration eliminators, shutoff valves, and strainers.

Glycol Addition Caution

Caution regarding catastrophic evaporator failure if glycol is added without proper pump control or system drainage.

Optional Inlet Strainer Kit

Details on the available inlet water strainer kit, its components, and installation.

Installing the Optional Inlet Strainer

Instructions for mounting and connecting the optional inlet strainer kit to the evaporator.

System Water Volume Considerations

Guidance on ensuring adequate system water volume to prevent short cycling and maintain control.

Variable Speed Pumping Operation

Information on operating chillers with variable water flow, including change rates and limits.

Evaporator Freeze Protection Methods

Describes thermostat-controlled heaters and procedures for sub-freezing temperatures using glycol.

Chilled Water Flow Switch Requirements

Explains the necessity and installation of a flow switch to prove adequate water flow for unit startup.

Refrigerant Charge Information

Details on the operating charge for R-134a and where to find unit-specific data.

Glycol Solution Calculations and Performance

Explains how to calculate capacity, flow, and pressure drop when using glycol solutions.

Antifreeze Use Caution

Caution against using automotive grade antifreeze; industrial grade glycols must be used.

Performance Adjustment Factors for Fluid Temperature

Information on how leaving chilled fluid temperatures affect unit performance and the need for glycol.

Electrical Connections and Codes

Wiring requirements, compliance with codes, and power connection options (multi-point vs. single-point).

RapidRestore Option

Details on the RapidRestore option, which does not require field installation, but needs field-supplied inputs.

Physical Data for Standard Efficiency Non-VFD Models

Physical Data for Standard Efficiency VFD Models

Index of Lifting and Mounting Drawings

Lifting and Mounting Dimensions (Non-VFD)

Lifting and Mounting Dimensions (VFD)

Isolator Locations and Kit Numbers

Electrical Data and Field Wiring

Field Wiring Guidelines

General guidelines for field wiring, compliance with codes, and power connection types.

Evaporator Heater Safety Caution

Caution regarding de-energizing evaporator heaters to prevent burnout when the system is drained.

Compressor Rotation Safety

Warning about compressor damage if rotated in the wrong direction and proper phasing requirements.

Electrical Data Notes

Notes explaining field wiring designations, allowable voltage limits, and power limitations.

BAS Interface Modules

Information on optional BAS interface modules and where to find installation manuals.

Wiring Diagram

Multipoint Electrical Data (Standard Efficiency Non-VFD)

Multipoint Field Wiring Data (Standard Efficiency Non-VFD)

Terminal Amps (Non-VFD) Data

Single-point Electrical Data (Standard Efficiency Non-VFD)

Single-point Field Wiring Data (Standard Efficiency Non-VFD)

Single-point Field Wiring Data (High Efficiency Non-VFD)

Single-point Field Wiring Data (Premium Efficiency Non-VFD)

Single-point Electrical Data (High Efficiency VFD)

Multipoint Electrical Data (Standard Efficiency VFD)

Multipoint Electrical Data (Premium Efficiency VFD)

Multipoint Field Wiring Data (VFD)

Terminal Amps (VFD) Data

Single-point Electrical Data (Standard Efficiency VFD)

Single-point Field Wiring Data (VFD)

Evaporator Pressure Drop Data (Standard Efficiency)

Remote Evaporator Overview and Data

Refrigerant Specialties Kit Components

Components included in the kit for field installation of remote evaporators.

Remote Evaporator Performance Derate Data

Derating factors for remote evaporator performance due to field installed refrigerant line losses.

Remote Evaporator Derate Procedure

Step-by-step procedure for determining derate factors based on suction line pressure drop.

Remote Evaporator Field Wiring Notes

Notes on wiring 110V liquid line solenoid valves, temperature sensors, and pressure transducers.

Remote Evaporator Refrigerant Piping Design

Remote Evaporator Models and Dimensions

Remote Evaporator Unit Dimensions (Non-VFD)

Remote Evaporator Unit Dimensions (VFD)

Remote Evaporator Lifting and Mounting Weights (Imperial)

Remote Evaporator Spring Isolators (Aluminum Fin)

Remote Evaporator Lifting & Mounting Locations (Non-VFD)

Troubleshooting Chart

Troubleshooting: Compressor Not Running

Potential causes and corrective steps for a compressor that fails to start or run.

Troubleshooting: Noisy or Vibrating Compressor

Possible causes include internal compressor issues or oil injection problems.

Troubleshooting: Compressor Overload/Tripped Breakers/Blown Fuses

Addresses low voltage, wiring faults, unbalanced voltage, and high discharge pressure as causes.

Troubleshooting: Compressor Load/Unload Failure

Identifies defective capacity control solenoids or unloader mechanisms as potential issues.

Troubleshooting: High Discharge Pressure

Common causes include noncondensables, fan issues, overcharging, and dirty condenser coils.

Troubleshooting: Low Discharge Pressure

Addresses wind effect, fan control issues, low suction pressure, and unloaded compressor conditions.

Troubleshooting: Low Suction Pressure

Examines causes like inadequate refrigerant charge, clogged filter-drier, or low water flow.

Troubleshooting: Low Oil Level Trip

Identifies insufficient oil, low discharge pressure, or low discharge superheat as possible causes.

Troubleshooting: High Suction Pressure

Covers excessive load, compressor unloader issues, low superheat, and system overcharge.

Daikin McQuay AWS210BDS User Manual

Table of Contents

Questions and Answers:

Daikin McQuay AWS210BDS Specifications

Summary

Installation Manual

Hazard Identification

DANGER Warnings