©2020
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
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.
Table Of Contents
Dimensions Page 2.................................
Parts Arrangements Page 4.........................
Shipping and Packing List Page 5....................
General Page 5....................................
Safety Page 5.....................................
Unit Support Page 6................................
Duct Connection Page 7............................
Rigging Unit For Lifting Page 7.......................
Condensate Drains Page 7..........................
Gas Piping Page 9.................................
Pressure Test Gas Piping Page 10.....................
High Altitude Derate Page 11.........................
Electrical Connections Page 11.......................
Blower Operation and Adjustments Page 14............
INSTALLATION
INSTRUCTIONS
LGH092H, LCH092H
LGH094U, LCH094U
LGH102H, LCH102H
LGH120H, LCH120H
LGH122U, LCH122U
LGH150H, LCH150H
LGH152U, LCH152U
(7.5 Ton)
(7.5 Ton)
(8.5 Ton)
(10 Ton)
(10 Ton)
(12.5 Ton
(12.5 Ton
PACKAGED UNITS
507245-08
5/2020
Supersedes 4/2020
Cooling Start-Up Page 22............................
Gas Heat Start-Up Page 32...........................
Heating Operation and Adjustments Page 33............
Electric Heat Start-Up Page 33........................
Supply Air Inverter Start-Up Page 34...................
Supply Air Inverter and Direct Drive Operation Page 36...
Direct Drive Start-Up Page 36.........................
Hot Gas Reheat Operation and Start-Up Page 38........
Service Page 39....................................
Unit Controller Parameter Settings Page 42.............
RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE
LGH SHOWN
3
3
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