McQuay SWT028C Manuals

Manuals and User Guides for McQuay SWT028C. We have 1 McQuay SWT028C manual available for free PDF download: Installation And Maintenance Manual

McQuay SWT028C Installation And Maintenance Manual

McQuay SWT028C Installation And Maintenance Manual (44 pages)

Self-contained Air Conditioning System Vintage Sizes 18 thru 40

Brand: McQuay | Category: Air Conditioner | Size: 1.93 MB

Table of Contents

Table of Contents
2
Introduction

3
- General Description
  3
- Inspection
  3
Installation

4
Refrigerant Piping

7
- Pressure Relief Valves
  7
Water Connections

8
- General
  8
- Condenser Piping
  8
- Condensate Drain Connection
  10
Duct Connections

11
- Supply Air
  11
- Return Air
  12
Physical Data

13
Dimensional Data

15
Unit Weights

18
Field Wiring

19
- General
  19
- Unit Disconnect
  19
- Return Air and Outside Air Sensor
  19
- Supply Power Wiring
  20
- Lug Sizes for Single Disconnect or Power Block
  20
Control Center

21
Electrical Legend

22
Typical Wiring Schematics

23
- (4 Compressors /4, 5 or 6 Stage)
  29
Standard Controls

30
- High Pressure Switches
  30
- Low Pressure Switches
  30
- Compressor Motor Protector
  30
- Proof of Airflow Switch
  30
- Frost Protection Switches
  30
- Clogged Filter Switch
  30
Unit Options

31
- Duct High Limit
  31
- Phase Fail/Under Voltage Protection
  31
- Duct Static Pressure Sensor
  31
- Building Static Pressure Sensor
  31
- Building Pressurization Applications
  32
- Freezestat
  32
- Condenser Water Flow Switch
  32
- Water Side Economizer
  32
- Condenser Water, Head Pressure Control
  32
- Variable Inlet Vanes
  33
- Variable Frequency Drive
  33
- Disconnect Switch
  33
- Dual Power Supply
  33
- Electric Heat
  33
- Hot Water Control
  33
System Check, Test and Start

34
- General
  34
- Pre Start-Up
  34
- Start-Up
  34
  - Fan Start-Up
    35
  - Compressor Start-Up
    35
  - Economizer Start-Up
    35
  - Hot Water Start-Up
    35
  - Expansion Valve Superheat Adjustment
    35
  - Refrigerant Charge
    36
  - Variable Air Volume (VAV) Start-Up
    37
  - Rpm Changes
    37
  - Drive Sheave Alignment and Belt Tension
    37
  - Maintaining Control Parameter Records
    37
System Maintenance

38
- Preventative Maintenance
  38
- Motor Bearings
  38
Replacement Parts

39
Service and Warranty Procedure

40
- In Warranty Return Material Procedure
  40
- Replacement Parts
  40
- Product Warranty
  40
System Check, Test and Start Form

41

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