©2021
WARNING
Improper installation, adjustment, alteration, ser
vice or maintenance can cause property damage,
personal injury or loss of life. Installation and ser
vice must be performed by a licensed professional
HVAC installer or equivalent, service agency, or the
gas supplier
Table Of Contents
Dimensions Page 2.................................
Parts Arrangements Page 3.........................
Shipping and Packing List Page 4....................
General Page 4....................................
Requirements Page 4...............................
Unit Support Page 5................................
Duct Connection Page 5............................
Rigging Unit For Lifting Page 6.......................
Horizontal Air Discharge Page 6......................
Condensate Drains Page 6..........................
Gas Piping Page 8.................................
Pressure Test Gas Piping Page 9.....................
High Altitude Derate Page 9.........................
Download Mobile Service App Page 10.................
Electrical Connections Page 10.......................
Blower Operation and Adjustments Page 13............
Cooling Start-Up Page 20............................
Prognostic & Diagnostic Sensors Page 22..............
Cooling Operation Page 25...........................
INSTALLATION
INSTRUCTIONS
LGM/LCM036,
048, 060, 074
3, 4, 5 and 6 Ton
GAS AND COOLING PACKAGED UNITS
508108-01
1/2021
CAUTION
As with any mechanical equipment, contact with
sharp sheet metal edges can result in personal in
jury. Take care while handling this equipment and
wear gloves and protective clothing.
Gas Heat Start-Up Page 26...........................
Heating Operation and Adjustments Page 27............
Electric Heat Start-Up Page 27........................
Hot Gas Reheat Startup Page 28......................
Service Page 30....................................
Factory Unit Controller Settings Page 36...............
RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE
Use this QR code to download the mobile service app. Follow the prompts
to pair the app with the unit control system and configure the unit. Refer to the
“Download Mobile App” section in this manual and the Setup Guide provided
with this unit. The QR code is also available in the unit control area.
The app can be downloaded from the appropriate iOS or Android store.
Look for the following icon.
Attention!
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