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McQuay SWT040C

McQuay SWT040C
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© 2002 McQuay International
Self-contained Air Conditioning System
Type SWT “C” Vintage Sizes 18 thru 40
Installation and Maintenance IM-709
Group: Applied Systems
Part Number: IM709
Date: January 2002
MEA
368-93-E

Table of Contents

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McQuay SWT040C Specifications

General IconGeneral
ModelSWT040C
CategoryAir Conditioner
Cooling Capacity4.0 kW
Heating Capacity4.5 kW
RefrigerantR410A
Outdoor Unit Dimensions (HxWxD)550x780x285 mm
Indoor Unit Weight9 kg
Outdoor Unit Weight32 kg

Summary

Installation

Location and Service Access

Outlines required clearances around the unit for proper maintenance, servicing, and component access.

Field Mounting of Sensors

Water Connections

Condenser Piping Connections

Details on connecting the condenser water supply and return lines to the unit.

Field Wiring

Control Center

Control Center Compartment Layout

Details the layout of high and low voltage compartments within the unit's central control enclosure.

Typical Wiring Schematics

Power Schematic Diagram

Illustrates the power wiring connections for the unit's electrical components and circuits.

Input Schematics

Output Schematics

Compressor Control

Provides the output schematic for controlling the unit's compressor stages.

Standard Controls

High Pressure Switches

Details the function, setting, and operation of high pressure safety switches.

Low Pressure Switches

Explains the function, setting, and automatic reset of low pressure safety switches.

Compressor Motor Protector

Describes the thermally protected compressors and their auto-resetting safety features.

Unit Options

System Check, Test and Start

Pre Start-up Procedure

Steps to perform before unit start-up, including installation checks and electrical connections.

Unit Start-up Procedure

Details on powering the unit, setting controllers, and starting auxiliary equipment.

Fan Start-up

Compressor Start-up

Procedure for starting compressors sequentially, including checks for refrigerant charge and operation.

Expansion Valve Superheat Adjustment

Guidance on setting superheat for optimal system performance and compressor longevity.

Variable Air Volume (VAV) Start-up

System Maintenance

Preventative Maintenance Schedule

Outlines routine maintenance tasks to ensure system reliability and avoid costs.

Service and Warranty Procedure

Product Warranty Terms

Details the warranty coverage, limitations, and procedures for obtaining service.

System Check, Test and Start Form

Initial Unit Checks

A checklist of initial inspections and verifications before starting the unit.

Start-up Procedures

Compressor Readings

Table for recording essential compressor operating parameters during start-up.

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