CAUTION: Risk of contact with sharp edges, splinters and exposed fasteners. Can cause injury. Only properly
trained and qualified personnel wearing appropriate, OSHA-approved PPE should attempt to move, lift,
remove packaging from or prepare the unit for installation.
NOTICE
Risk of improper power-supply connection. Can cause equipment damage and loss of warranty coverage.
Prior to connecting any equipment to a main or alternate power source (for example back-up generator
systems) for start-up, commissioning, testing, or normal operation, ensure that these sources are correctly
adjusted to the nameplate voltage and frequency of all equipment to be connected. In general, power-source
voltages should be stabilized and regulated to /- 10% of the load nameplate nominal voltage.
See transformer label for primary tap connections. Installer will need to change transformer primary taps if
applied unit voltage is other than pre-wired tap voltage.
NOTICE
Risk of a catastrophic water circuit rupture. Can cause expensive building and equipment damage.
Install an overflow drain pan under the unit with a monitored leak detection system in the pan and shutoff valves
in the supply and return water lines that automatically close if water is detected by the leak detection system.
The shutoff valves should be spring return and must be rated for a close-off pressure that is the same as or
higher than the supply water pressure. If it is not possible to install an overflow drain pan, then a monitored leak
detection system should be installed in the base of the unit or under the unit to actuate the shutoff valves
immediately on a leak detection signal.
The overflow drain pan should have a drain line connected to it that flows to a floor drain or maintenance sink in
case of a shutoff valve or leak detection system malfunction.
NOTE: Installation must be carried out in a voltage-free state. The mains feed (Supply A and B) must be disconnected
or all terminals disconnected.
CAUTION: Risk of improper piping installation, leak checking, fluid chemistry and fluid maintenance. Can
cause injury. Building and equipment damage may also result. Installation and service of this equipment
should be done only by qualified personnel who have been specially-trained in the installation of air-
conditioning equipment and who are wearing appropriate, OSHA-approved PPE.
NOTICE
Risk of piping-system corrosion and freezing fluids. Can cause leaks resulting in equipment and very expensive
building damage. Heat exchangers and piping systems are at high risk of freezing and premature corrosion.
Fluids in these systems must contain the proper antifreeze and inhibitors to prevent freezing and premature coil
and piping corrosion. When the cooling unit or piping may be exposed to freezing temperatures, charge the
system with coolant fluid based on the coldest ambient design temperature. Automotive antifreeze is
unacceptable and must NOT be used in any fluid system. Use only coolant fluid solution that meets the
requirements of recommended industry practices. Do not use galvanized pipe.
The system coolant fluid must be analyzed by a competent fluid-treatment specialist before start up to establish
the inhibitor and antifreeze solution requirement and evaluated at regularly scheduled intervals throughout the
life of the system to determine the pattern of inhibitor depletion.
6 Installation and Commissioning
22
Vertiv™ Liebert® DCDactive Fan Module User Manual
