Vertiv Liebert DSE Packaged 400, Installer/User Manual

Page: 15 / 105

3 PRE-INSTALLATION PREPARATION AND GUIDELINES
3.1 Storage before Installation
If storing the unit for long periods before installation:
• Remove the packaging from the unit, and allow proper clearance around the unit to perform periodic
inspections and maintenance.
• Inspect the unit periodically for condensation inside the unit or other signs of other effects of the storage
environment.
• Rotate the fans and motor shaft by hand periodically for several revolutions. Look for signs of lubrication
problem or obstructions.
• If storing at low temperatures trapped moisture can collect on walls and electrical components. We
recommend routine inspections and, if needed, install electric heaters to prevent condensation.
NOTE: Before installing unit, determine whether any building alterations are required to run wiring and duct work.
Follow all unit dimensional drawings and refer to the submittal engineering dimensional drawings of individual units
for proper clearances.
Refer to Table 2.3 on page 5, and submittal drawings to determine the type of system being installed and anticipate
building alterations and duct work needed.
The unit and anchor dimensions are described in the submittal documents included in the Submittal Drawings on page 65.
• Verify that mounting surface/roof top is level, solid and sufficient to support the unit. See Table 3.3 on
page 16, and Table 3.4 on page 16, for unit weights.
• Verify that the support structure for the unit (concrete or other type) has a flat, regular surface and is adequate
to support the unit operating weight.
• Verify that adequate water-control/drain system is in place. If connecting the drip-pan clean-out line, refer to
the appropriate submittal document in Table 3.1 on page 13, for the clean-out line location and port size.
• Verify that the high-voltage electric-supply lines are adequately sized based on the electrical specification on
the unit's name plate and meet local code.
• Verify that the utility electric-supply lines (lights and outlet) are adequately sized and meet local code.
• Verify that all control and communication wiring are properly routed to the unit control panel and meet local
code.
• Confirm that the conditioned space has a proper envelope and vapor barrier.
• Handle outside air and humidity control externally to the Liebert® DSE™ Packaged Solution unit. The DSE™
Packaged Solution does not control humidity and is not intended to handle outside air.
• Allow at least the minimum recommended clearances for maintenance and service. See the appropriate
submittal documents for dimensions in
Submittal Drawings on page 65
• Ensure that there is no obstruction when installing duct work connections and transitions to minimize friction
losses and turbulence.
• Verify that all duct joints are sealed to prevent air leakage or water penetration.
• If unit is installed but will not be commissioned for a long period, operate the fans or install electric heaters to
prevent internal condensation. Refer to
Storage before Installation above, and follow the guidelines until
commissioned.
3 Pre-installation Preparation and Guidelines
11