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LGH 072
Lennox LGH 072 User Manual
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Page 8
LGH036−360 Agency
Rep
air Parts Listing
When
ordering repair p
a
rts, include the complete model number and serial number listed on the ETL/CSA rating plate −
e.g. LGH120H4BH1Y
.
Gas Heat Section Part
s
Heat Exchanger
Combustion Air Assembly
Combustion Air Proving Switch
Burner Assembly
Burner Manifold Assembly
Main Burner Orifices
Flame Roll−out Switches
Auxiliary Limit Controls
Ignition Electrode Assembly
Ignition Lead
Ignition Sensor Assembly
Sensor Lead
Combination Gas V
alve
Limit Controls
Cooling Part
s
Compressors
Condenser Fan Motors
Condenser Fan Blades
Condenser Fan Run Capacitors
Freezestats
Condenser Fan Mounting Bracket
Fan Grille
Indoor Blower Motors
Blower Wheel
Expansion V
alve
Distributor
Exhaust Fans (Opt.)
Electrical Control Part
s
Unit Controller
Compressor Contactors
Circuit Breakers (Opt.)
T
ransformer (Control)
T
ransformer (Contactor)
Blower Contactor
Limit, Blower Relay
Heat Relays
Condenser Fan Relays
Capacitor CAB
Relay CAB
Disconnect Switch (Opt.)
63
65
Table of Contents
Installation
3
Table of Contents
3
Back View
4
General
6
Requirements
6
Shipping and Packing List
6
Duct Connection
7
Rigging Unit for Lifting
7
Unit Support
7
Condensate Drains
8
Horizontal Air Discharge
8
Gas Piping
10
Electrical Connections
11
High Altitude Derate
11
Pressure Test Gas Piping
11
Blower Operation and Adjustments
14
Blower Data
29
Cooling Start-Up
30
Table of Contents
38
Lgh/Lch036, 048
39
Gas Heat Start-Up
40
Heating Operation and Adjustments
41
Electric Heat Start-Up
41
Hot Gas Reheat Startup
44
Service
45
Caution
45
Condensate Drains
47
Table
55
Installation
57
Connect Gas Piping
59
High Altitude Derate
60
Pressure Test Gas Piping
60
Table
60
Two Stage Gas Valve Adjustment
61
Gas Heat Operation
61
Proper Gas Flow
61
Typical Gas Heat Schematic
62
Typical Unit Schematic
63
Repair Parts Listing
64
*2P82013* *P506215-01*
65
Table
65
USB Firmware Update
66
Smartwiret Connections
67
Startup
68
Menu Interface
70
Table
70
Display
71
Guided Setup
73
Service
75
Table
75
Test
76
Data
77
Settings
79
Install New M2
85
Table
85
Economizer (Damper)
87
Appendix
90
Abbreviations
90
Table
90
USB Service Report Example
91
Wiring Diagrams
98
Quick Start Guide (Back Cover)
106
Table
107
Lontalk Module Kit
117
Table
117
Application
118
Installation
118
IMC Manual
120
Communications Check out
121
Table
121
Lonworks Network Connection
122
Network Cable
122
Network Limits
122
Data Update Rate
123
Network Integration
123
Zone Sensor Setpoints
123
Normal Operation
123
Alarm Codes
124
4
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Lennox LGH 072 Specifications
General
Brand
Lennox
Model
LGH 072
Category
Air Conditioner
Language
English
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