TABLE 21 - ADDITIONAL STATIC PRESSURE RESISTANCE
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| RESISTANCE, IWG |
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DESCRIPTION |
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| CFM |
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| 500 | 600 | 700 | 800 | 900 | 1,000 | 1,100 | 1,200 | 1,300 | 1,400 | 1,500 | 1,600 | 1,700 | 1,800 | 1,900 | 2,000 |
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Wet Indoor coil | 0.01 | 0.01 | 0.01 | 0.02 | 0.01 | 0.02 | 0.03 | 0.04 | 0.04 | 0.03 | 0.04 | 0.04 | 0.05 | 0.05 | 0.06 | 0.07 |
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Economizer | 0.00 | 0.00 | 0.00 | 0.01 | 0.01 | 0.01 | 0.01 | 0.02 | 0.03 | 0.04 | 0.05 | 0.06 | 0.07 | 0.07 | 0.08 | 0.08 |
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Filter/Frame Kit | 0.01 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.03 | 0.03 | 0.03 | 0.03 | 0.04 | 0.05 | 0.05 | 0.06 | 0.06 | 0.07 |
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Electric Heat | 0.02 | 0.03 | 0.03 | 0.03 | 0.04 | 0.04 | 0.05 | 0.06 | 0.07 | 0.08 | 0.09 | 0.10 | 0.01 | 0.11 | 0.11 | 0.12 |
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NOTE: 1. Deduct these resistance values from the available external static pressure shown in the respective Blower Performance Table.
2.The pressure thru the economizer is greater for 100% outdoor air then for 100% return air. If the resistance of the return air duct system is less then 0.25 IWG, the unit will deliver less CFM during full economizer operation.
CLEARANCES
(Minimum)
Front | 12" |
Back | 0" |
Left Side (Filter Access) | 24" |
Right Side | 24" |
Below Unit | 0" |
Above Unit | 36" (For CondenserAir Discharge) |
Units may be installed on combustible floors made from wood or class A, B or C roof covering material.
Units must be installed outdoors. Overhanging structures or shrubs should not obstruct outdoor air discharge outlet.
NOTE: FOR UNITS APPLIED WITH A ROOF |
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CURB, THE MINIMUM CLEARANCE MAY BE | ||
TERIAL AND THE SUPPLY DUCT. | ||
REDUCED FROM 1 INCH TO 1/2 INCH BE- |
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TWEEN COMBUSTIBLE ROOF CURB MA- |
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FIG. 3 - CLEARANCES
Unitary Products Group | 13 |