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McQuay Vision CA Series User Manual

McQuay Vision CA Series
36 pages
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McQuay IM 782-1 1
Installation and Maintenance Manual IM 672-3
Group: Applied Air
Part Number: IM 672
Date: June 2005
© 2005 McQuay International
Vision
Air Handler
Sizes 003–090

Table of Contents

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McQuay Vision CA Series Specifications

General IconGeneral
BrandMcQuay
ModelVision CA Series
CategoryAir Handlers
LanguageEnglish

Summary

General Information

Receiving and Handling

Procedures for receiving and inspecting air handler units for damage and completeness.

Nomenclature

Explanation of model codes and unit identification nomenclature for Vision Air Handlers.

Unit Storage

Guidelines for storing air handling units to prevent damage and maintain integrity.

Installation Guidelines

Service Clearances

Required space around the unit for maintenance, service, and component access.

Rigging

Procedures for safely rigging and lifting Vision air handler units as shipped from the factory.

Unit Leveling

Instructions for leveling the unit on its surface to prevent distortion and ensure proper drainage.

Assembling Sections

Procedures for connecting factory-shipped sections into a complete unit.

Assembling Sections

External Section-to-Section Mounting

Procedures for connecting factory-shipped sections into a complete unit.

Horizontal Airflow Section Mounting

Steps to connect sections in horizontal airflow configuration.

Vertical Inverted Airflow Section Mounting

Steps for assembling sections in vertical or inverted airflow configurations.

Extended Coil Section Mounting

Procedure for joining extended coil sections to other unit components.

Installation Guidelines

Internal Section-to-Section Mounting

Method for internally fastening shipping sections together to form the unit.

Ceiling Hung Installation

Guidelines for suspending units from the ceiling using various support methods.

Panels, Frame Channels, and Doors

Panel Removal

Procedures for removing side or top panels from the unit cabinet.

Frame Channel Removal

Steps to remove frame channels for improved access to unit sections.

Fan Section Doors

Instructions on how to open and secure fan section access doors.

Insulated Panels and Section Mounting

Injected-Foam Insulated Panels

Handling and cutting procedures for panels with injected foam insulation.

Field Mounting Junction Boxes

Guidelines for mounting external junction boxes and components to unit panels.

Face and Bypass Section Mounting

Procedures for mounting face and bypass sections, especially for specific unit sizes.

Installation Guidelines

Bypass into Vertical Fan Section

Steps to assemble vertical coil sections with bypass ducts and fan sections.

External Face and Bypass Duct Assembly

Field assembly of external face and bypass duct for larger unit sizes.

Multizone Unit Procedures

Multizone Assembly

Procedures for assembling multizone unit sections, including joining collars.

Multizone Damper Assembly

Steps to attach the multizone damper assembly to the unit.

Duct Connections and Damper Adjustment

Duct Connections

Guidelines for connecting flexible ductwork to unit outlets and inlets.

Multizone Damper Adjustment

Procedures for adjusting multizone dampers for proper closing and sealing.

Actuator Torque and Piping

Damper Torque Requirements

Torque specifications for actuators on multizone, mixing box, and economizer dampers.

Mounting Actuators

Guidelines for mounting actuators, ensuring proper support and avoiding stress.

Piping and Coils

General guidelines for piping design, sizing, and installation for coils.

Coil and Condensate Procedures

Direct Expansion Coils

Piping and connection details for direct expansion (DX) coils.

Steam Coils

Installation and piping requirements for steam coils, including pitch and connections.

Traps and Valves

Guidelines for sizing and installing traps and selecting/using valves.

Water Heating Coils and Isolation Adjustment

Drain Pan Traps

Guidelines for installing drain pan traps to ensure proper condensate drainage.

Internal Isolation Assembly Adjustment

Adjusting internal isolation assemblies for fan and motor mounts.

Electrical Installation

Operation Guidelines

Startup Checks

Pre-operation checks to ensure the unit is properly installed and ready to run.

Fan Wheel Alignment

Operating Limits

Fan Vibration Levels

Service and Maintenance

Periodic Service and Maintenance

Recommended routine checks and maintenance tasks for the unit.

Ball Bearing Lubrication

Guidelines for lubricating motor and fan shaft ball bearings.

Fan Drive Adjustments

VM and VP Variable Pitch Sheaves

LVP Variable Speed Sheaves

MVP Variable Speed Sheaves

Fan Drive Belt Adjustment

Filter Options and Gauges

Front Load Filter Option

Information regarding filter removal and installation for front-loaded options.

Filter Gauges

Using filter gauges to monitor pressure drop across installed filters.

Coil Maintenance and Component Removal

Winterizing Water Coils

Procedures for winterizing water coils to prevent freeze-up.

Maintaining the Coil

Steps for cleaning and maintaining coils for optimal performance.

Removing and Replacing Components

General procedures for removing and replacing unit components.

Component Removal and Replacement

Removing the Fan Section

Procedures for removing the fan assembly, including housing and bearings.

Removing and Replacing the Coil

Methods for removing and installing various types of coils (single, stacked, staggered).

Stacked and Staggered Coil Procedures

Removing Stacked Coils

Steps to remove stacked coil configurations from the unit.

Installing Stacked Coils

Procedures for installing stacked coil configurations into the unit.

Removing and Installing Staggered Coils

Methods for removing and installing staggered coil configurations.

Warranty Information

Warranty Return Material Procedure

Procedure for returning defective materials for warranty claims.

Replacement Parts

Information on ordering replacement parts, including required unit details.

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