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Data Aire DAPA-2.5 User Manual

Data Aire DAPA-2.5
81 pages
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Table of Contents

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Data Aire DAPA-2.5 Specifications

General IconGeneral
BrandData Aire
ModelDAPA-2.5
CategoryFan
LanguageEnglish

Summary

Mini-Plus Ceiling Systems Installation, Operation & Maintenance Manual

Introduction and Safety

Safety Alert Symbols and Words for Hazard Alerting Safety

Explains symbols and words used for hazard alerting safety.

Product Overview and Model Identification

1.1 Product Information

Describes the Data Aire Mini-Plus (DAP) environmental control equipment.

1.2 Model Identification

Explains how to identify the Mini-Plus Ceiling System (DAP) model number.

Unit Inspection and Paperwork

1.3 Inspection

Details the process of inspecting the unit upon arrival and verifying contents.

1.4 Paperwork

Outlines the documentation shipped with each Data Aire CRAC unit.

Equipment Storage Guidelines

1.5 Storage

Provides guidelines for short-term and long-term storage of the equipment.

1.6 Suggested Reference Storage Room Conditions

Lists recommended temperature and humidity conditions for storing the equipment.

General Storage and Trademark Information

1.7 General Storage Considerations

Continues general storage considerations, including environmental protection.

1.8 Registered Trademarks – Copy Rights – References Section

Disclaimer regarding Data Aire Inc. trademarks and copyrights.

Installation Safety and Warnings

2.0 INSTALLATION

Provides essential safety instructions for the installation process.

WARNING: Risk of handling heavy and lengthy parts...

Warns about risks of handling heavy parts and lifting equipment.

Installation Preparation

2.1 Recommended Tools for Installation

Lists the necessary tools required for the installation process.

2.2 Pre-Installation

Details pre-installation checks, including unit verification and site preparation.

Installation Planning and Room Considerations

2.3 Installation must be planned so that:

Lists planning requirements for a successful unit installation.

2.4 Room Considerations

Discusses environmental requirements and considerations for the installation room.

Equipment Handling and Rigging

2.5 Equipment Handling and Rigging

Provides instructions for safely handling and rigging the equipment.

2.5.1 Moving Unit into Final Location

Details the procedure for moving the unit to its final installation site.

Unit Mounting and Airflow Configurations

2.9 Installing/Mounting

Details the process of mounting the evaporator section using support rods.

2.10 Vertical Airflow Units

Describes the optional vertical airflow configuration and mounting.

Component Installation and Piping

2.11 Indoor Condensers and Condensing Units

Explains the mounting and installation of indoor condensers/condensing units.

2.12 Piping

Provides detailed guidelines for refrigerant piping installation and brazing.

Refrigerant Piping Details

2.13 Split Air-Cooled Unit Piping

Details piping requirements for split air-cooled units and line sizing.

2.14 Discharge Lines

Covers installation guidelines for discharge lines, including traps and check valves.

Refrigerant Line Sizing and Installation

2.15 Liquid Lines

Discusses liquid line sizing, velocity, and pressure drop.

2.16 Suction Lines

Covers suction line installation, trapping, and insulation.

Refrigerant Line Sizing Tables

2.17 Recommended Line Sizing

Provides tables for recommended refrigerant line sizing.

Connection Sizes for Various Unit Types

2.18 Connection Sizes, Air Cooled Units

Specifies connection sizes for air-cooled units.

2.19 Connection Sizes, Water/Glycol Cooled Units

Specifies connection sizes for water/glycol cooled units.

Field Piping: Condenser Above Evaporator

2.21 Field Piping, Remote Condenser/Condensing Unit Above Evaporator

Details piping for remote condensers located above the evaporator.

Field Piping: Condenser Below Evaporator

2.22 Field Piping, Remote Condenser/ Condensing Unit Below Evaporator

Details piping for remote condensers located below the evaporator.

Fluid Cooler and Auxiliary Coil Information

2.23 Connection Sizes, Fluid Coolers (Dry Coolers)

Refers to user manuals for fluid cooler connection sizes.

2.24 Auxiliary Chilled Water/Energy Saver Coil

Explains the function and use of auxiliary chilled water/energy saver coils.

Condensate Drain System

2.25 Condensate Drain System

Provides recommendations for condensate drain system installation and best practices.

NOTE: Mini-Plus ceiling units with optional Energy Saver or Auxiliary Chilled Water coils...

Notes the increased frame height for units with optional Energy Saver or Auxiliary Chilled Water coils.

Condensate Trap Installation

2.25.2 Condensate Trap

Explains the purpose and installation of condensate traps.

WARNING: The condensate drain MUST be connected...

Emphasizes the requirement for connecting the condensate drain before startup.

Optional Condensate Pump Installation

2.25.3 Condensate Pump Side Mounting Pump (Optional)

Details the side mounting of optional condensate pumps.

Humidifier and Refrigerant Piping Protection

2.26 Humidifier

Introduces the optional steam generator type humidifier.

2.27 Refrigerant Piping Protection

Warns about refrigerant pressure buildup and the need for protection.

Water/Glycol Cooled Unit Piping and System Notes

2.28 Water/Glycol Cooled Unit Piping

Details piping requirements for water/glycol cooled units.

NOTICE: Receivers are often installed on condensers...

Notes that receivers have safety devices, but service valves can isolate them.

Leak Testing and Electrical Installation

2.29 Leak Testing

Outlines the critical process of checking the entire system for leaks.

2.30 Electrical Installation

Provides guidance on field power and control wiring installation.

Commissioning Information

2.31 Commissioning Information

Explains the commissioning process, including inspections and performance testing.

Electrical Connections and Safety

3.0 ELECTRICAL CONNECTIONS

Covers essential safety precautions for electrical connections.

General Electrical Wiring Guidelines

3.1 General Electrical Field Wiring Guidelines

Provides guidelines for running low voltage and high voltage wiring.

Electrical Service, Ratings, and Grounding

3.2 Electrical Service

Discusses verifying electrical service and power sources for units.

3.3 Nameplate Ratings

Explains how to find and interpret unit nameplate ratings.

Voltage Tolerance and Control Wiring

3.5 Voltage Tolerance

Covers voltage tolerance requirements for unit operation.

3.6 Heat Exchanger Auxiliary Control Wiring

Details auxiliary control wiring for remote heat exchangers.

Unit Controls and Shutdowns

3.7 Remote Shutdown

Explains the function and wiring of remote shutdown contacts.

3.8 Mini-dap4 Controller

Introduces the Mini-dap4 microprocessor controller and its functions.

Remote Sensors, Pumps, and Disconnect Switch

3.10 Remote Sensors

Details the installation of combination remote temperature and humidity sensors.

3.12 Disconnect Switch (Optional)

Explains the optional thru-door locking disconnect switch.

Manual Override Switches

NOTICE: The Manual Override Board with switches...

Notes that the Manual Override Board was previously available on units before April 2021.

3.13 Manual Override Switch Board

Describes the manual override slide switches for testing and startup.

Wiring Diagrams and Remote Heat Exchanger Installation

3.14 Wiring Diagrams

Explains the availability and purpose of unit wiring diagrams.

4.0 INSTALLATION OF REMOTE OUTDOOR HEAT EXCHANGER

Refers to separate manuals for remote heat exchanger installation.

Refrigerant Charging Procedures

5.0 CHARGING

Provides charging instructions for single fixed speed compressor circuit models.

5.2 Charging/Installation Work Procedures

Outlines basic work procedures for charging and installation.

Triple Evacuation: Stage 1 and Tools

5.3 Triple Evacuation and Dehydration Procedure

Recommends and details the triple evacuation procedure for moisture removal.

5.3.1 Tools Needed

Lists the tools required for evacuation and dehydration procedures.

Triple Evacuation: Stages 2 and 3

5.3.2 First Stage Evacuation

Details the first stage of the triple evacuation process to 2000 microns.

5.3.3 Second Stage Evacuation

Details the second stage of the triple evacuation process to 1500 microns.

Triple Evacuation: Final Stage and Pre-Charging

5.3.5 Final Evacuation Stage

Details the final evacuation stage to 500 microns and rise test.

5.4 General Pre-Charging Guidelines

Provides general guidelines and checks before starting refrigerant charging.

Voltage Phase Check for Compressors

5.5 Voltage Phase Check

Explains how to check voltage phasing for the evaporator and compressor.

5.5.2 Fixed Speed Scroll Compressor Phase Check

Describes how to check compressor rotation phasing.

Heat Exchanger Phase Check and Line Set Calculations

5.5.3 Heat Exchanger Phase Check

Mentions phase checks for heat exchangers.

5.6 Line Set Charge Calculations

Explains how to calculate refrigerant charge for line sets.

Charging Procedures and Component Tests

5.7 Component Functional Test

Mentions using manual mode for functional verification of components.

5.8 Charging Procedures

Provides detailed procedures for charging the system with refrigerant.

Refrigerant Handling and Split System Charging

5.8.1 Refrigerant Handling

Covers EPA regulations for refrigerant recovery, recycling, and handling.

5.8.2 Air Cooled Split System Charging

Details charging procedures for air-cooled split systems.

Fixed Speed Compressor Charging

5.8.3 Charging the Fixed Speed Compressor

Details the procedure for charging fixed speed compressors.

Refrigerant Charge Values and Sight Glass Usage

NOTICE: Charging to a full liquid line sight glass...

Warns against using only the sight glass for charge determination.

Additional Oil and Flooded System Charging

5.8.4 Additional Oil

Explains how to add oil during the charging process.

5.8.5 Flooded System Charging (Systems with Low Ambient Receiver Package)

Details charging for flooded systems with low ambient receiver packages.

Refrigerant Receiver Information

5.8.6 Refrigerant Receiver

Explains the function, selection, and application of refrigerant receivers.

Receiver Installation and Safety Devices

5.8.9 Receiver Location

Discusses receiver package mounting and wiring.

5.8.10 Safety Relief Devices

Describes fusible plug safety relief devices in low ambient receivers.

Charging Fixed Compressors and Water/Glycol Systems

5.8.12 Charge Fixed Speed Compressor

Details how to charge fixed speed compressors, including head pressure adjustments.

5.8.13 Water/Glycol-Cooled System Charging

Covers charging procedures for water/glycol-cooled systems.

Refrigeration Component Parameters

5.9 Important Refrigeration Components

Introduces important refrigeration components.

5.9.1 Thermal Expansion Valve

Explains the function and adjustment of the Thermal Expansion Valve (TXV).

Refrigerant Pressure Control Switches

5.9.2 High Pressure Cutout Switch

Describes the high-pressure cutout switch and its settings.

5.9.3 Low Pressure Cutout Switch

Describes the low-pressure cutout switch and its settings.

Liquid Line Solenoid Valve

5.9.4 Liquid Line Solenoid Valve (Optional)

Explains the purpose and function of the optional liquid line solenoid valve.

Glycol Systems Overview

6.0 GLYCOL SYSTEMS

Introduces topics related to glycol systems.

6.1 Glycol Concentration

Discusses glycol concentration and system volume for freeze protection.

Water Treatment for Glycol Systems

6.2.3 Water Treatment

Discusses water treatment to prevent fouling, scale, and corrosion.

Corrosion Protection and Fluid Cooler Details

6.2.3.5 Corrosion protection

Covers corrosion protection requirements for stainless steel and copper.

6.3 Fluid Cooler

Refers to user manuals for fluid cooler operation and volume.

Glycol System Parameters

6.5 Freezing Point of Aqueous Solutions

Lists freezing points for various glycol concentrations.

6.6 Mixing Glycol and Water

Provides recommendations for mixing glycol and water solutions.

Unit Controls

7.1 Mini-dap4 Microprocessor Control Controller

Details the standard Mini-dap4 controller and its functions.

7.2 Remote Heat Exchangers

Discusses controls for remote condensers, condensing units, and fluid coolers.

Regular Maintenance Items

8.0 REGULAR MAINTENANCE ITEMS

Lists regular maintenance items for the unit.

8.1 Air Filters

Provides details on air filter types, checking, and replacement.

Maintenance of Belts, Fuses, and Reheat

8.2 Belts

Discusses checking belt tension and condition.

8.4 Fuses

Discusses when and how to replace fuses.

Maintenance of EC Fans and Motors

8.8 EC Plenum (Plug) Fans

Discusses maintenance for EC plenum fan modules.

8.8.1 Electronically Commutated Motors

Details safety precautions and protective features of EC motors.

EC Motor Protection and Testing

EC motors have an under-voltage protection...

Explains EC motor under-voltage protection and alarm conditions.

8.8.2 EC Motor Testing

Describes how to test EC plenum fan modules using a manual mode.

Maintenance and Inspection Checklist

9.0 MAINTENANCE/INSPECTION CHECKLIST

Provides a checklist for regular maintenance and inspection.

Frequently Asked Questions (FAQ)

10.0 Frequently Asked Questions – FAQ

Introduces the FAQ section for common questions.

10.1 Electrical FAQ Section

Q&A on electrical terms like FLA, MCA, MOP, voltage tolerance, etc.

Electrical and Mechanical FAQ

Question 10: What is a time delay fuse?

Explains the use of time delay fuses for induction loads.

10.2 Mechanical FAQ Section

Q&A on piping sizes, clearances, and traps for air-cooled units.

Humidifier and Glycol System FAQ

Question 4: How much steam is generated by the humidifier?

Explains humidifier steam generation and adjustability.

Question 5: Is an air vent valve required in the piping when an expansion tank is used?

Confirms air vent requirement and expansion tank recommendation for glycol systems.

Troubleshooting Superheat and Suction Pressure

Superheat and Suction Pressure Trouble Shooting Guide

Guide for troubleshooting superheat and suction pressure issues.

Contact Data Aire

11.0 Contact Data Aire

Provides contact details for Data Aire, Inc.

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