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Lennox Enlight LGT240H4M

Lennox Enlight LGT240H4M
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UNIT INFORMATIONUNIT INFORMATION
Service Literature
WARNING
To prevent serious injury or death:
1- Lock-out/tag-out before performing maintenance.
2- If system power is required (e.g., smoke detector
maintenance), disable power to blower, remove
fan belt where applicable, and ensure all
controllers and thermostats are set to the “OFF”
position before performing maintenance.
3- Always keep hands, hair, clothing, jewelry, tools,
etc., away from moving parts.
WARNING
Improper installation, adjustment, alteration,
service or maintenance can cause property damage,
personal injury or loss of life. Installation and service
must be performed by a licensed professional HVAC
installer or equivalent, service agency, or the gas
supplier
Table of Contents
Options / Accessories . . . . . . . . . . . . . . . . . . . . . Page 2




Unit Parts Arrangement . . . . . . . . . . . . . . . . . . . Page 18
I-Unit Components . . . . . . . . . . . . . . . . . . . . . . . Page 18












options.

      



-


       
-



-


-

stages.
󰀨-

-
       


       
       

   󰀩

      
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LGT SERIES
13 to 25 ton
45.7 to 88 kW


LGT156 through 300
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Lennox Enlight LGT240H4M Specifications

General IconGeneral
BrandLennox
ModelEnlight LGT240H4M
CategoryFan
LanguageEnglish

Summary

Service Literature

General Safety Warnings

Crucial safety precautions for preventing injury or death during operation and maintenance.

Specifications Overview

Gas Heating Specifications

Specifications related to gas heating input, performance, and temperature rise.

Electrical Data by Voltage

Electrical data including compressor, fan, and motor ratings for different voltages.

Unit Components and Arrangement

Safety Warnings and Precautions

Essential safety warnings and precautions for handling electronic components and unit safety.

Operational Procedures

Start-Up Operation

Procedures for unit start-up, including preliminary checks and cooling/heating sequences.

Heating Startup Sequence

Step-by-step instructions for safe heating startup and operation.

System Service Checks

Checks for heating and cooling systems, including gas piping and pressure testing.

Maintenance Procedures

Routine maintenance tasks for filters, coils, electrical connections, and motors.

Hot Gas Re-Heat Operation

Multi-Staged Blower System

VAV System Operation

Wiring Diagrams and Sequences of Operation

Sequence of Operation for LGT156

Detailed sequence of operation for the LGT156 model during cooling and heating modes.

Sequence of Operation for LGT180

Detailed sequence of operation for the LGT180 model during cooling and heating modes.

Sequence of Operation for LGT210

Detailed sequence of operation for the LGT210 model during cooling and heating modes.

Sequence of Operation for LGT240300

Detailed sequence of operation for the LGT240/300 models during cooling and heating modes.

Voltage Specific Wiring Diagrams

Wiring diagrams illustrating unit configurations based on voltage and bypass options.

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