©
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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Arrangements
. . . . . . . . . . . . . . . . . . . . . . . . .
Shipping and Packing List
. . . . . . . . . . . . . . . . . . . .
General
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Support
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Duct Connection
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rigging Unit For Lifting
. . . . . . . . . . . . . . . . . . . . . . .
Condensate Drains
. . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Piping
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Test Gas Piping
. . . . . . . . . . . . . . . . . . . . .
High Altitude Derate
. . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Connections
. . . . . . . . . . . . . . . . . . . . . . .
Blower Operation and Adjustments
. . . . . . . . . . . .
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
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Heat Start-Up
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Heating Operation and Adjustments
. . . . . . . . . . . .
Electric Heat Start-Up
. . . . . . . . . . . . . . . . . . . . . . . .
Supply Air Inverter Start-Up
. . . . . . . . . . . . . . . . . . .
Supply Air Inverter and Direct Drive Operation
. . .
Direct Drive Start-Up
. . . . . . . . . . . . . . . . . . . . . . . . .
Hot Gas Reheat Operation and Start-Up
. . . . . . . .
Service
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Controller Parameter Settings
. . . . . . . . . . . . .
RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE
LGH SHOWN
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