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Lennox LGH074 Installation Instructions
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Page 66
LGH/LCH036, 048, 060, 072, 074
REHEA
T MODE REFRIGERANT ROUTING
REHEA
T
COIL
EV
APORA
TOR
REHEA
T
VA
LV
E
RETURN
AIR
CONDENSER
COIL
OUTDOOR
AIR
COMPRESSOR
SUPPL
Y
AIR
CHECK
VA
LV
E
EXP
ANSION
VA
LV
E
FIGURE 28
COIL
COOLING MODE REFRIGERANT ROUTING
REHEA
T
COIL
EV
APORA
TOR
REHEA
T
VA
LV
E
RETURN
AIR
CONDENSER
COIL
OUTDOOR
AIR
COMPRESSOR
SUPPL
Y
AIR
CHECK
VA
LV
E
EXP
ANSION
VA
LV
E
FIGURE 29
COIL
65
67
Table of Contents
Table of Contents
1
Dimensions
2
Parts Arrangements
3
Shipping and Packing List
5
General
5
Requirements
5
Unit Support
6
Duct Connection
6
Rigging Unit for Lifting
7
Horizontal Air Discharge
7
Condensate Drains
7
Gas Piping
9
Pressure Test Gas Piping
10
High Altitude Derate
10
Electrical Connections
11
Blower Operation and Adjustments
13
Cooling Start-Up
46
Cooling Operation
57
Gas Heat Start-Up
60
Heating Operation and Adjustments
61
Electric Heat Start-Up
62
Advanced Air Flow Control Start-Up
62
Hot Gas Reheat Startup
65
Service
67
Factory Unit Controller Settings
70
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Lennox LGH074 Specifications
General
Brand
Lennox
Model
LGH074
Category
Accessories
Language
English
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