50
Single Zone V
ertical
Air Handling Unit Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
ELECTRICAL SYSTEM INSTALLATION
External Static Pressure Setting Values
Indoor Unit Static Pressure Setting
After the system is installed, use the wired controller to enter the desired static pressure setting values for high, medi-
um,and low fan speeds. Refer to the manual for your system’s wired controller.
Static Pressure (in. wg)
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Model No./
Nominal System
Capacity (Btu/h)
Airflow
Rate
CFM
Setting Value (in. WG)¹
LVN180HV4/
18,000
High
640
63
67
75
81
88
91
95
Mid
580
57
63
69
77
84
89
93
Low
480
51
59
65
73
80
87
91
LVN240HV4/
24,000
High
710
67
71
79
85
92
94
97
Mid
640
63
67
75
81
88
91
95
Low
480
51
59
65
73
80
87
91
Static Pressure (in. wg)
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Model No./
Nominal System
Capacity (Btu/h)
Airflow
Rate
CFM
Setting Value (in. WG)¹
LVN360HV4/
36,000
High
1,100
65
71
79
86
92
96
102
106
112
–
Mid
1,000
61
67
75
82
88
94
100
104
110
116*
Low
900
57
63
71
78
84
92
98
102
108
114
LVN420HV/
42,000
High
1,260
70
77
83
90
96
98
104
108
116*
–
Mid
1,100
65
71
79
86
92
96
102
106
114
–
Low
1,000
61
67
75
82
88
94
100
104
112
116*
LVN480HV/
48,000
High
1,400
77
82
87
94
100
102
106
110
116*
–
Mid
1,260
70
77
83
90
96
98
104
108
114
116*
Low
1,000
61
67
75
82
88
94
100
104
112
116
1
Unless otherwise noted, vertical-horizontal air handing units are UL listed up to 0.5 in. wg total static pressure, including coil, case, duct
work pressure drop, air filter, and largest kW size heater. Internal static pressure includes coil and case only.
*
Airflow rate (CFM) decreases by 3% per 0.1 in. wg.
• If the external static pressure is set incorrectly, the air conditioning system may malfunction.
• To get the desired air flow and external static pressure combination, use the setting value from the table. Using a setting value other
than the values listed in the table will not provide the desired combination.
• Factory default is 0.3 in. wg.
• Factory default is high static pressure.
Table 17: External Static Pressure and Air Flow for LVN180HV4 and LVN240HV4 (NJ Chassis)
Table 18: External Static Pressure and Air Flow for LVN360HV4 LVN420HV, and LVN480HV (NK Chassis)
