McQuay SWT040C

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26 IM709

Figure 22. Output Schematic, Actuator Control

Table of Contents

Default Chapter2
- Table of Contents2
Introduction3
- General Description3
- Inspection3
Installation4
- Handling4
- Vibration Isolators4
- Location/Service Access4
- Removal of Shipping Restraints and Construction Filter4
- Disassembly of Sections5
- Field Mounting of Sensors6
  - Units with Fan Section Shipped Separate (Code 21=*M)6
  - Units Ordered for Modular Construction (Code 32=1)6
Refrigerant Piping7
- Pressure Relief Valves7
Water Connections8
- General8
- Condenser Piping8
- Condensate Drain Connection10
Duct Connections11
- Supply Air11
- Return Air12
Physical Data13
Dimensional Data15
Unit Weights18
Field Wiring19
- General19
- Unit Disconnect19
- Return Air and Outside Air Sensor19
- Supply Power Wiring20
- Lug Sizes for Single Disconnect or Power Block20
Control Center21
Electrical Legend22
Typical Wiring Schematics23
- (4 Compressors /4, 5 or 6 Stage)29
Standard Controls30
- High Pressure Switches30
- Low Pressure Switches30
- Compressor Motor Protector30
- Proof of Airflow Switch30
- Frost Protection Switches30
- Clogged Filter Switch30
Unit Options31
- Duct High Limit31
- Phase Fail/Under Voltage Protection31
- Duct Static Pressure Sensor31
- Building Static Pressure Sensor31
- Building Pressurization Applications32
- Freezestat32
- Condenser Water Flow Switch32
- Water Side Economizer32
- Condenser Water, Head Pressure Control32
- Variable Inlet Vanes33
- Variable Frequency Drive33
- Disconnect Switch33
- Dual Power Supply33
- Electric Heat33
- Hot Water Control33
System Check, Test and Start34
- General34
- Pre Start-Up34
- Start-Up34
System Maintenance38
- Preventative Maintenance38
- Motor Bearings38
Replacement Parts39
Service and Warranty Procedure40
- In Warranty Return Material Procedure40
- Replacement Parts40
- Product Warranty40
System Check, Test and Start Form41

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