York Sun Select YV28 - Page 2

York Sun Select YV28

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Tested in accordance with:

Table of Contents

Table of Contents3
General5
- Safety Considerations5
- Inspection6
- Reference6
- Renewal Parts6
- Approvals6
Nomenclature8
Installation9
- Installation Safety Information9
- Limitations9
  - Requirements in the U.S.A9
  - Requirements in Canada9
- Unit Components11
- Unit Limitations12
- Location12
- Clearances12
- Rigging and Handling13
- Weights and Dimensions14
  - Rain Hood Dimensions16
  - Economizer Outdoor Air Hood Assembly16
  - Manual Damper Outdoor Air Hood Assembly18
  - Exhaust Air Hood Assembly20
  - Pressure Line Connections for VAV22
  - Utilities Entry24
  - Condensate Drain Line Installation24
  - Accessory Weights26
  - Roof Curbs27
- Ductwork29
- Placing the Equipment over a Trane Curb29
- Compressors29
- Converting between 2-In. and 4-In. Filters30
- Dirty Filter Switch Pressure Setting31
- Power and Control Wiring31
  - Power Wiring Detail32
  - Thermostat Wiring33
- Toolless Access Handle Installation35
- Convenience Outlet Cover Installation36
- Electrical Data38
  - Constant Volume Standard Static38
  - Constant Volume Medium Static40
  - Constant Volume High Static42
  - VFD Two-Stage Standard Static44
- VFD Two-Stage Medium Static46
- VFD Two-Stage High Static48
- VFD Four-Stage Standard Static50
- VFD Four-Stage Medium Static52
- VFD Four-Stage High Static54
- VFD Customer Supplied Standard Static56
- VFD Customer Supplied Medium Static58
- VFD Customer Supplied High Static60
Physical Data62
Optional Gas Heat66
Gas Piping66
Gas Connection68
Propane Units, Tanks, and Piping69
Flue Exhaust Hood69
Economizer Sequences71
- Economizer Minimum Position71
- Free Cooling Operation71
- Dry Bulb Changeover72
- Single Enthalpy Changeover72
- Dual Enthalpy Changeover72
- Auto72
Free Cooling Operation72
- Thermostat72
- Sensor72
Power Exhaust73
- Setpoints73
- Inputs73
- Outputs73
- Operation73
Modulating Power Exhaust with VFD73
- Setpoints and Related Data73
Smart Equipment™ Economizer Board74
Indoor Air Quality77
Phasing77
Blower Rotation77
Adjusting the Belt Tension77
Drive Selection79
Airflow Performance80
Air Balance81
Checking Air Quantity82
- Supply Air Drive Adjustment83
Operation84
- Cooling Sequence of Operation84
- Compressor Operation84
  - Stage Cooling84
- Gas Heat Sequence of Operation84
- Two Stage Gas Heat Ignition Control Board Function85
Cooling Start-Up87
- Cooling Pre-Start Checklist87
- Operating the Unit87
- Post-Start Checklist87
Gas Heat Start-Up88
- Gas Heat Pre-Start Checklist88
- Operating Instructions88
- Gas Heat Post-Start Checklist88
- Shutting down the Unit88
Checking Gas Heat Input90
- To Determine the Rate of Gas Flow at Second Stage (Full Input)90
- To Determine the Rate of Gas Flow at First Stage (Minimum Input)90
- Manifold Gas Pressure Adjustment91
- Two Stage91
- Adjustment of Temperature Rise91
- Burners/Orifices Inspection/Servicing92
Charging Tables93
Smart Equipment™ Unit Control Board96
Four-Stage Board101
- Cable Recommendations103
Start-Up Sheet104

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