Vertiv Liebert DSE Packaged 400, Инструкция по установке и эксплуатации

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3.2 Rooftop Unit Installation Guidelines
The rooftop units must be supported by an appropriately designed curb. A curb is the interface between the building and
the rooftop unit. It supports the weight of the roof-top unit by transferring the load onto the roof's structural members,
streamlines duct-work connections, and provides the weatherproof seal to the roof.
• A structural engineer must verify that the roof has adequate strength and ability to support loads from the
weight of the unit, curb, snow, wind and seismic events.
• The curb and any cribbing must be designed and certified by a qualified engineer to support the anchoring
loads of the unit and provide for a leak free design. Sealing of the curb to the roof is the responsibility of the
qualified engineer or architect to design and qualified contractor to execute.
• The roof curb should be installed by qualified personnel. Improper installation or faulty construction can result
in water or air leaks ori in structural failure and collapse.
• The roof curb mounting surface must be square and level prior to setting equipment.
• The installer must ensure that any appropriate sealing material is applied between the unit and the curb to
provide water- and air-tight connections in accordance with the design of the curb.
• Sealing materials cannot interfere with the anchoring connection surface of the roof-top unit, or the unit may not
be able to withstand its rated seismic or wind capacities. Vibration isolators should not be used without the
express consent of Vertiv engineering.
• Any flashing from the rooftop unit to the curb is the responsibility of the installing contractors.
• Any water ingress through any penetrations from flashing or other connections to the roof-top unit are the
responsibility of the installing contractor to remedy.
3.2.1 Service Clearance for Rooftop Units
Allow for recommended service clearances around the unit per appropriate submittal drawing for your unit, listed in Table
3.1 on the facing page. Provide a roof walkway along the sides of the unit for service and access to controls and
components. Contact your Vertiv sales representative for service requirements that are less than those recommended .
Applications in geographic areas subjected to seismic or hurricane conditions must meet code requirements for fastening
the unit to the curb and the curb to the building structure.
Vertiv | DSE Packaged Solution Installer/User Guide
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