Duct Installation - Desert Aire ExpertAire LC Series Installation And Operation Manual

2.2

Duct Installation

Duct design and installation should conform to the latest ASHRAE and SMACNA low velocity
duct standards. See section 5.2 for details. Undersized restrictive ductwork with abrupt turns
or transitions can decrease the efficiency and the moisture removal capacity of your
dehumidifier and may lead to unit failure. Size the ductwork for an acceptable air pressure drop
at the airflow volume of your dehumidifier. Use neoprene flex connectors when you attach
ductwork to the dehumidifier to prevent transmission of excess vibration and noise.
Airflow Rate (CFM)
Model Size
(LC Only)
01 (LC Only) 540
02 (LC Only) 950
03 1400
04 1900
05 2300
06 3000
08 3500
10 (LC Only) 4100
12 (LC Only) 5500
15 (LC Only) 8000
Select the grilles, registers and diffusers for low static pressure loss, required throw distance,
and the specified CFM rating. You can find this information in most grille manufacturer's
catalogs. If you are installing the grilles in a corrosive environment, choose components made
from anodized aluminum.
If you must install ductwork in an unconditioned area, use fiberglass duct wrap with vapor
barrier facing. You must install the outdoor air intake away from all sources of airborne
contamination such as exhaust fans or plumbing vents. You can use galvanized sheet metal
ducts for most applications. However, you should use aluminum or stainless steel ducts for
extreme applications such as chemical-laden environments.
External Static Pressure
Airflow Rate (CFM)
(ESP) digit 9 for LC (A, B, C,
(LV Only)
K, L, M); digit 10 for LV (A, D)
-
-
1400
2100
3000
3400
3800
-
-
-
Figure 4 - LC and LV Series Standard Unit Airflow Specifications
External Static Pressure
(ESP) digit 9 for LC (D, E, F,
N, P, R); digit 10 for LV (B, F)
0.5" WC 1.0" WC
External Static Pressure
(ESP) digit 9 for LC (G, H, J,
S, T, U); digit 10 for LV (C, G)
1.5" WC
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Desert Aire - LC/LV Manual