(Direct Drive Units)
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| DUCT COVERS - Units are shipped with all air duct |
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| openings covered. |
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| For side duct applications; |
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| 1. Remove and discard the supply and return air duct |
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| covers. |
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| 2. Connect ductwork to duct flanges on the rear of the |
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| unit. |
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| For bottom duct applications; |
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| 1. Remove the side supply air duct cover to gain |
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| access to the bottom supply air knockout panel. |
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| 2. Remove and discard the bottom knockout panel. |
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| 3. Replace the side duct cover. |
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| 4. With filter section access panel removed from the |
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| unit, remove and discard the bottom return air |
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| knockout panel. |
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| 5. Replace the filter access panel. |
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CLEARANCES |
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| All dimensions are in inches. They are |
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| subject to change without notice. Certi- |
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| fied dimensions will be provided upon |
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Front | 32" |
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| 12" (Less Economizer) |
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| UTILITIES ENTRY DATA |
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Back | 36" (With Economizer or Fixed |
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| Air/motorized Air Damper) |
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| 11 |
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| KNOCKOUT |
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| 24" (Less Economizer) |
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| HOLE | SIZE |
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| USED FOR |
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Left Side (Filter Access) |
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| 3 |
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| (DIA.) |
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| 36" (With Economizer) |
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| 11 |
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| Control Wiring | |||||||
Right Side (Cond. Coil) | 24" |
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| A | 7/8" * |
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Below Unit1 | 0" |
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| 4 |
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| tom)** |
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Above Unit2 | 72" (For Condenser Air Discharge) |
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| Power Wiring | |||||||||||||||
1 Units may be installed on combustible floors made from wood or class A, B or C |
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| B | 2" * |
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roof covering material. |
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| 7 |
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| tom) |
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2 Units must be installed oudoors. Overhanging structures or shrubs should not |
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| Gas Piping |
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obstruct the outdoor coil nor the fan outlet. |
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| C |
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NOTE: A 1" clearance must be provided between any combustible material and the |
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| (Front) |
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supply air ductwork for a distance of 3 feet from the unit. |
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| Gas Piping |
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The products of combustion must not be allowed to accumulate within a confined |
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| (Bottom) |
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space and recirculate. |
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Locate unit so that the vent air outlet hood is at least: | REAR VIEW |
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| *Knockouts in the bottom of the unit can be located by | |||||||||||||||||||||||||
• Three (3) feet above any forced air inlet located within 10 horizontal feet (excluding |
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those integral to the unit). |
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| the slice in the insulation. |
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| **Do not remove the 2" knockout ring. |
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• Four (4) feet below, 4 horizontal feet from, or 1 foot above any door or gravity air inlet | SIDE SUPPLY AND RETURN |
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into the building. |
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| AIR OPENINGS |
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• Four (4) feet from electric meters, gas meters, regulators and relief equipment. |
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| AIR FLOW LEGEND |
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| SUPPLYRETURNAIRAIR |
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| “ | CONDENSATE |
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| DRAIN |
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| (must be trapped) |
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| OUTDOOR AIR |
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| OUTDOOR AIR |
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| (Economizer) |
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| FIXED |
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| OUTDOOR | 12 | “A” | ||
DETAIL “A” | AIR DAMPER | DETAIL “B” |
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MOTORIZED |
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UNIT WITH ECONOMIZER RAIN HOOD | DAMPER | UNIT WITH FIXED OUTDOOR |
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| AIR/MOTORIZED DAMPER RAIN HOOD |
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FIG. 9 - DIMENSIONS AND CLEARANCES (3, 4 & 5 TON)
12 | Unitary Products Group |