York WW-20 Manuals

Manuals and User Guides for York WW-20. We have 1 York WW-20 manual available for free PDF download: Installation Manual

York WW-20 Installation Manual

York WW-20 Installation Manual (68 pages)

GAS/ELECTRIC SINGLE PACKAGE AIR CONDITIONERS

Brand: York | Category: Air Conditioner | Size: 3.03 MB

Table of Contents

Table of Contents
2
General

4
Safety Considerations

4
Inspection

4
Reference

4
Renewal Parts

5
Approvals

5
Product Nomenclature

6
Installation

7
Operation

46
- Sequence of Operations Overview
  46
- Pressure Drop Across a Dry Indoor Coil Vs Supply Air Cfm for All Unit Tonnages
  46
  - Cooling Sequence of Operation
    47
    
    Continuous Blower
    47
    
    Intermittent Blower
    47
    
    No Outdoor Air Options
    47
    
    Economizer with Single Enthalpy Sensor
    47
    
    Economizer with Dual Enthalpy Sensors
    48
    
    Economizer (Single or Dual) with Power Exhaust
    48
    
    Motorized Outdoor Air Dampers
    48
    
    Cooling Operation Errors
    48
    
    High-Pressure Limit Switch
    48
    
    Low-Pressure Limit Switch
    48
    
    Freezestat
    48
    
    Low Ambient Cooling
    48
  - Safety Controls
    49
  - Compressor Protection
    49
  - Flash Codes
    49
  - Reset
    49
  - Electric Heating Sequence of Operations
    49
  - Heating Operation Errors
    50
    
    Temperature Limit
    50
  - Safety Controls
    50
  - Flash Codes
    50
  - Reset
    50
  - Heat Anticipator Setpoints
    50
- Limit Control Setting
  50
  - Gas Heating Sequence of Operations
    51
  - Gas Heating Operation Errors
    52
    
    Temperature Limit
    52
    
    Gas Valve
    52
  - Safety Controls
    52
  - Flash Codes
    53
  - Resets
    53
  - Heat Anticipator Setpoints
    53
Start-Up (Cooling)

53
- Prestart Check List
  53
- Operating Instructions
  53
- Limit Control Setting
  53
  - Post Start Check List
    54
  - Shut down
    54
Start-Up (Gas Heat)

54
- Pre-Start Check List
  54
- Operating Instructions
  54
  - To Light Pilot and Main Burners
    54
  - To Shut down
    54
- Post-Start Check List (Gas)
  54
- Manifold Gas Pressure Adjustment
  55
- Pilot Checkout
  55
- Burner Instructions
  55
- Burner Air Shutter Adjustment
  55
- Checking Gas Input
  55
  - Natural Gas
    55
- Adjustment of Temperature Rise
  56
- Belt Drive Blower
  56
Troubleshooting

56
- Cooling Troubleshooting Guide
  56
- Gas Heat Troubleshooting Guide
  61
- Unit Flash Codes
  63
- Unit Control Board Flash Codes
  64
- Unit Control Board
  65

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