Multi F Engineering Manual

External Static Pressure
FOUR-WAY VAHU INDOOR UNITS
Static Pressure (in. wg) 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Model No. / Nominal Capacity
of Indoor Unit (Btu/h)
Airflow Rate / CFM Setting Value at (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 — — —
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
1
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pressure includes coil and case only.
2
Airflow rate (CFM) decreases by 3% per 0.1 in. wg.
3
Factory default setting is 0.3 in wg
4
Factory default setting is high static pressure
7DEOH Multi F Vertical-Horizontal Air Handling Unit External Static Pressure Setting Values Table.
Note:
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• 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.
Capacity (kBtu/h [tons]) Flow Rate (CFM) Static Pressure Drop (in wg)
18 (1.5)
High (640) -0.04
Middle(580) -0.04
Low (480) -0.04
24 (2.0)
High (710) -0.04
Middle(640) -0.04
Low (480) -0.04
36 (3.0)
High (1100) -0.08
Middle(1000) -0.08
Low (900) -0.08
7DEOH Air Filter Static Pressure Drop Factors.
Capacity (kBtu/h [tons])
+HDWHU&DSDFLW\N:
3, 5 8, 10 15 20
18 (1.5)
480 480 Not Available Not Available
24 (2.0)
480 480 Not Available Not Available
36 (3.0)
900 900 900 900
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lead to physical injury or death
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166 | VERTICAL-HORIZONTAL
Multi F and Multi F MAX Indoor Unit Engineering Manual
MULTI
F
MAX
MULTI
F