Vertiv Liebert MC series, Installer/User Manual

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Figure 4.9 Rigging to Lift the Unit for Installation
4.6 Mounting the Condenser
The condenser must be installed so that it is level within 1/2 in. (13 mm) to ensure proper refrigerant flow. For roof
installation, mount the condenser on suitable curbs or other supports. Follow all local and national codes.
4.6.1 Standard Mounting Requirements
Secure the legs to the mounting surface using field supplied 3/8 in. (9.5 mm) diameter grade 5 bolts with a flat washer in
each of the two 1/2 in. x 1 in. (12.7 mm x 25.4 mm) obround holes in each leg. For anchor dimensions, see the appropriate
planning dimension submittal documents for your unit included in the
Submittal Drawings on page 87.
4.6.2 Seismic Certified and Wind Certified Mounting Requirements
Mounting requirement details such as anchor brand, type, embedment depth, edge spacing, anchor to anchor spacing,
concrete strength, special inspection, and attachment to non-building structures must be outlined and approved by the
engineer of record for the project or building.
Structural floors and housekeeping pads must also be designed and approved by the project or building structural engineer
of record to withstand the seismic or wind anchor loads as defined on the installation drawings. The installing contractor is
responsible for the proper installation of all anchors and mounting hardware, observing the mounting requirements detailed
in the seismic or wind installation drawings and additionally outlined by the engineer of record.
At a minimum, 3/8 in. grade 5 anchors with American National Standard Series W, Type A, plain washers
(ANSI B18.22.1-1965, R1975) selected to match the nominal anchor diameter must be installed at each anchor location
between the anchor head and equipment for tension load distribution. See
Optional Configuration for Liebert® MC Seismic
Application or Wind Load Certification on page 85, for additional information.
4 Equipment Inspection and Handling
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