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Selecting the Best Location
The water source unit must be installed indoors in a mechanical room. The mechanical room must be designed such that equipment vibration
or noise does not affect surrounding rooms, and is properly ventilated or conditioned to maintain an acceptable ambient temperature range
between 32°F and 104°F. Mechanical room temperature is required to be maintained between 32°F and 104°F. The water source unit will
reject heat to the mechanical room. See the "General Data" on page 9 for the amount of heat rejected to the equipment room.
• The water source unit must also be located where the refrigerant pipe system is designed within the piping limitations set forth in the Water
Mini Engineering Manual. Location of the water source unit should be strategically located in the building to minimize refrigerant piping
materials, labor, and refrigerant.
• The underlying structure or foundation must be designed per local codes and support the weight of the unit. Units can be stacked above
each other as long as each water source unit is independently supported. Minimum clearances must be maintained either per recommenda-
tions shown in Figures 2 and 3 or local codes, whichever is greater. Include enough space in the installation area for service access (refer
to the installation space requirements).
• The mechanical room floor should be made waterproof. Periodic flushing of the water heat exchanger will be required, and a floor drain
installed nearby the equipment will help facilitate this maintenance.
• The water-source unit should be installed with a closed-loop water system. If an open-loop system is used, it is recommended that an
intermediate heat exchanger be installed.
• When piping, towers, or other system components that contain water and are exposed to ambient air temperatures below 32°F, an anti-
freeze solution must be used. Frozen water will damage the plate heat exchanger. A typical antifreeze solution consists of a proper mixture
of ethylene glycol, propylene glycol, or methanol mixed with water. The designer should also consider the use of a supplemental boiler /
heater to maintain minimum temperatures.
Note:
Avoid exposing the water-source unit to oil, steam, combustible gases, acidic solutions or sprays, carbon fiber, sulfur, or other corrosive gases.
Avoid exposure to electromagnetic waves from EMF radiating machinery such as generators, MRI equipment, or other equipment that emits
electromagnetic energy. The control system may be affected by electromagnetic energy, which may result in abnormal system operation. Also,
the inverter components in the water source units may generate electromagnetic noise, therefore, ensure the water-source unit is placed at an
acceptable distance from computer, audio, and other sensitive electronic equipment. Route power wiring and communications cables in sepa-
rate conduits.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
INSTALLATION
Placement Considerations
17
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