Unitary products group WJ24 Manuals

Manuals and User Guides for Unitary products group WJ24. We have 1 Unitary products group WJ24 manual available for free PDF download: Installation Manual

Unitary products group WJ24 Installation Manual

Unitary products group WJ24 Installation Manual (72 pages)

GAS/ELECTRIC SINGLE PACKAGE AIR CONDITIONERS

Brand: Unitary products group | Category: Air Conditioner | Size: 2 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

17
Operation

51
- Sequence of Operations Overview
  51
- Pressure Drop Across a Dry Indoor Coil Vs Supply Air Cfm for All Unit Tonnages
  51
  - Cooling Sequence of Operation
    52
    
    Continuous Blower
    52
    
    Intermittent Blower
    52
    
    No Outdoor Air Options
    52
    
    Economizer with Single Enthalpy Sensor
    52
    
    Economizer with Dual Enthalpy Sensors
    52
    
    Economizer (Single or Dual) with Power Exhaust
    52
    
    Motorized Outdoor Air Dampers
    53
    
    Cooling Operation Errors
    53
    
    High-Pressure Limit Switch
    53
    
    Low-Pressure Limit Switch
    53
    
    Freezestat
    53
    
    Low Ambient Cooling
    53
  - Safety Controls
    54
  - Compressor Protection
    54
  - Flash Codes
    54
  - Reset
    54
  - Electric Heating Sequence of Operations
    54
  - Heating Operation Errors
    54
    
    Temperature Limit
    54
  - Safety Controls
    55
  - Flash Codes
    55
  - Reset
    55
  - Heat Anticipator Setpoints
    55
  - Gas Heating Sequence of Operations
    55
- Limit Control Setting
  55
  - Gas Heating Operation Errors
    56
    
    Temperature Limit
    56
    
    Gas Valve
    57
  - Safety Controls
    57
- Limit Control Setting
  57
  - Flash Codes
    58
  - Resets
    58
  - Heat Anticipator Setpoints
    58
Start-Up (Cooling)

58
- Prestart Check List
  58
- Operating Instructions
  58
- Post Start Check List
  58
- Shut down
  59
Start-Up (Gas Heat)

59
- Pre-Start Check List
  59
- Operating Instructions
  59
  - To Light Pilot and Main Burners
    59
  - To Shut down
    59
- Post-Start Check List (Gas)
  59
- Manifold Gas Pressure Adjustment
  60
- Pilot Checkout
  60
- Burner Instructions
  60
- Burner Air Shutter Adjustment
  60
- Checking Gas Input
  61
  - Natural Gas
    61
- Adjustment of Temperature Rise
  61
- Belt Drive Blower
  61
Troubleshooting

61

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