Lennox LCH074 Installation Instructions Manual

©2019
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Arrangements . . . . . . . . . . . . . . . . . . . . . . . . .
Shipping and Packing List . . . . . . . . . . . . . . . . . . . .
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Duct Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rigging Unit For Lifting . . . . . . . . . . . . . . . . . . . . . . .
Horizontal Air Discharge . . . . . . . . . . . . . . . . . . . . . .
Condensate Drains . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Test Gas Piping . . . . . . . . . . . . . . . . . . . . .
RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE
LG STANDARD AND HIGH EFFICIENCY SHOWN
INSTALLATION
INSTRUCTIONS
LGH/LCH036, 048,
060, 072 & 074
3, 4, 5 and 6 Ton
GAS AND COOLING PACKAGED UNITS
507410-05
4/2019
Supersedes 10/2018
High Altitude Derate
Electrical Connections
Blower Operation and Adjustments
Cooling Start-Up
Cooling Operation
Gas Heat Start-Up
Page 2
Heating Operation and Adjustments
Page 3
Electric Heat Start-Up
Page 5
Advanced Air Flow Control Start-Up
Page 5
Hot Gas Reheat Startup
Page 5
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 6
Factory Unit Controller Settings
Page 6
Page 7
Page 7
Page 7
As with any mechanical equipment, contact with
Page 9
sharp sheet metal edges can result in personal in­
jury. Take care while handling this equipment and
Page 10
wear gloves and protective clothing.
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CAUTION
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