Specifications

Ducting Considerations
Ducting Considerations for the PEA/PEAD/SEZ
Horizontal Ducted Indoor Unit
With the introduction of ducted indoor unit products, some
information on duct selection and design seems appropriate.
Considering the performance and design of these indoor
units, selection and proper duct sizing and installation will be
necessary for satisfactory operation.
The maximum available static pressure from the PEA and
SEZ indoor units is 0.2 in. W.G. and for the PEAD indoor
units 0.6 in. W.G.
Most of the static pressure duct loss comes from allowing
the duct work to sag. Allowing even a 30 percent sag in the
ductwork can increase the static pressure loss up to eight
times. Flexible ductwork runs should be kept to less than 15 ft.
Air Flow (CFM) 50 100 150 200 250
Grille Size (In. x In.) 6x6 6x6 8x6 10x6, 8x8 12x6, 10x8
Inches of Static Pressure Loss per 100 ft. of hard duct
4"ø 6"ø 8"ø 10"ø
50 CFM 0.15 0.02 - -
100 CFM 0.6 0.08 0.02 -
150 CFM - 0.2 0.04 -
200 CFM - 0.3 0.08 0.02
250 CFM - 0.45 0.11 0.04
500 CFM - - 0.4 0.15
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