York Sun Select YV28 - Page 110

York Sun Select YV28

110 pages

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YORK

®

is a registered trademark of Johnson Controls. Subject to change without notice. Printed in U.S.A. Copyright © 2020 by Johnson

Controls. All rights reserved. The Smart Equipment logo is a trademark of Johnson Controls in the United States and other countries. It is

part of the Johnson Controls product portfolio.

Johnson Controls Ducted Systems

www.york.com

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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