LG AR-DE31125A Manuals

Manuals and User Guides for LG AR-DE31125A. We have 1 LG AR-DE31125A manual available for free PDF download: Installation And Operation Manual

LG AR-DE31125A Installation And Operation Manual

LG AR-DE31125A Installation And Operation Manual (176 pages)

ROOFTOP DEDICATED OUTDOOR AIR SYSTEMS

Brand: LG | Category: Fan | Size: 10.94 MB

Table of Contents

General Safety Information
2
Table of Contents
3
Unit Nomenclature
8
General Data
9
Product Overview
19
- Heating
  19
- Airflow Arrangement
  19
- Safety Listing
  19
- Models and Capacities
  19
Subassemblies
20
Installation
22
Typical Unit Weights and Dimensions
22
Additional Clearances for Packaged
25
Handling Concerns for Units with Package
25
Lifting
26
Roof Curb Mounting
26
Optional Piping Vestibule
27
Ductwork Configurations
27
Rail Mounting and Layout
27
- Gas Connections
  28
Piping Installation
30
- Optional Coil Piping
  30
- Condensate Drain Trap
  30
- Condensate Overflow Switch
  30
Electrical Information
31
Optional Component Operation
33
- Exhaust Fan VFD Sequence
  33
- Exhaust Fan Only Power
  33
- Hot Gas Reheat Valve
  37
Factory-Installed Refrigeration System Components
37
Start-Up Unit
40
- Pre-Start-Up Checklist
  41
- Special Tools Required
  41
- Start-Up Procedure
  41
- Voltage Imbalance
  41
- Start-Up Checklist
  42
Start-Up Components
45
- Fan
  45
- Supply Fan (Plenum Type)
  45
- Fan Wheel Rotation Direction
  45
- Supply/Exhaust Fan
  45
- Vibration
  45
- Discharge Air Temperature Sensor
  46
- Optional Dirty Filter Switch
  48
Optional Energy Wheel
52
Troubleshooting
52
Routine Maintenance
59
Maintenance Procedure
59
General Safety Information
63
Unit Identification
64
Furnace Model Number
64
Burner Control Turndown
64
Furnace Serial Number
64
ETL Listing
64
Product Overview
64
Furnace Control Center
65
- Furnace Control Center Components
  65
- Typical Furnace Control Logic
  65
Typical Furnace, Electrical and Control Components
66
Gas-Fired Burner Turndown
67
- Electronic Modulation
  67
- Available Turndown Control Options
  67
Installation of Venting for Outdoor Units
68
Installation of Venting for Indoor Units
68
Venting Methods
69
Installation of Standard Indoor Venting
69
- Horizontal
  69
Installation of Concentric Venting
70
- Horizontal
  72
- Vertical
  73
Installation of Control Wiring
73
Installation of Discharge Air Sensor
73
Installation of Gas Piping
74
- Test the System for Leaks
  74
- Gas Pressure Test Ports
  74
Sequence of Operation
76
- Start-Up / Standby
  76
- Heat Mode
  76
- Recovery from Lockout
  76
Performance Data
76
Start-Up - Furnaces (All Units)
77
Reference: Controls
90
- Furnace Control with Microprocessor
  90
Maintenance
91
- Combustion Blower Motor
  91
- Burners and Orifices
  91
- Heat Exchanger
  91
- Flue Collector Box
  91
- Electrical Wiring
  91
- Gas Train
  91
- Replacement Parts
  91
Maintenance Log
92
Controller Overview
95
- Expansion Boards
  97
- Connecting to the Web
  97
- Service Password
  97
- Startup Settings
  97
- Expansion Board Addresses and Dip Switch Settings
  98
- IP Address
  99
Software Backup and Restore
100
AC Smart Setup
101
Navigation
106
Menu
106

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