51
Electrical System Installation
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ELECTRICAL SYSTEM INSTALLATION
Figure 70: ESP Setting Values (NK frame).
External Static Pressure Setting Values (NK frame)
Table 18: Vertical Air Handling Unit Indoor Unit External Static Pressure and Air Flow Tables.
IDU External Static Pressure Setting Values
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
Capacity of System
(Btu/h)
Airflow Rate / CFM
Setting Value (in. WG)
1
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*
• If the ESP is set incorrectly, the air conditioning 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.
1 Unless otherwise noted, vertical air handling 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.
Factory default status is 0.3 in wg.
Factory default is high static pressure.
External Static Pressure Setting Values
Summary of Contents for LV181HV4
Page 73: ...NOTES ...
