Product Specifications
Roof Curb Installation — Rigging
Provisions for forks have been included in the unit base frame. No other fork locations are approved.
•Unit must be lifted by the four lifting holes located at the base frame corners.
•Lifting cables should be attached to the unit with shackles.
•The distance between the crane hook and the top of the unit must not be less than 60”.
•Two spreader bars must span over the unit to prevent damage to the cabi- net by the lift cables. Spreader bars must be of sufficient length so that ca- bles do not come in contact with the unit during transport. Remove wood struts mounted beneath unit base frame before setting unit on roof curb. These struts are intended to protect unit base frame from fork lift damage. To remove the struts, extract the sheet metal retainers and pull the struts through the base of the unit. Refer to rigging label on the unit.
Important: If using bottom discharge with roof curb,
Refer to the Roof Curb Installation Instructions for proper curb installation.
Curbing must be installed in compliance with the National Roofing Contractors Association Manual.
Lower unit carefully onto roof mounting curb. While rigging the unit, the center of gravity will cause the condenser end to be lower than the supply air end.
Bring condenser end of unit into alignment with the curb. With condenser end of the unit resting on curb member and using curb as a fulcrum, lower opposite end of the unit until entire unit is seated on the curb. When a rectangular cantilever curb is used, take care to center the unit. Check for proper alignment and orientation of supply and return openings with duct.
Corner & Center-of-Gravity Locations
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| Return |
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| Condenser |
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30” |
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| Coil |
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| Evaporator Coil |
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Supply
Compressor
37”
Unit Weights | |||||
Weights | Weights | Weights | Weights | ||
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Corner Weight (A) | 100 | 110 | 115 | 130 | |
Corner Weight (B) | 170 | 180 | 195 | 215 | |
Corner Weight (C) | 105 | 110 | 120 | 130 | |
Corner Weight (D) | 170 | 180 | 195 | 215 | |
Unit Shipping Weight | 550 | 595 | 625 | 715 | |
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Unit Operating Weight | 525 | 570 | 600 | 690 | |
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Note: Weights are calculated without accessories installed.
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