WSU PRODUCT DATA | 11
Water Source Unit Product Data
Due to our policy of continuous product innovation, some specications may change without notication.
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Multi V Water 5
Multi V Water 5 Water Source Unit (WSU), equipped with an inverter compressor, offers superior load matching and long piping installation.
The product optimizes power consumption in high-rise buildings. Add on features make it easy to upgrade the existing capacity at any time.
Sophisticated electronic control and unique refrigerant flow gives these systems the capability to perform in extreme/unusual working
conditions.
Generation 4 Equipment
The latest versions of LG’s indoor units and water source units are designated Generation 4 (Gen 4). For Gen 4 units to operate with Gen 4
features, the air conditioning system must meet the following requirements:
• All indoor units, heat recovery units, and water source units must be Gen 4.
• All water source units must have Gen 4 software installed.
• Water source units DIP switch 3 must be set to ON (factory default setting is OFF).
• All controllers must support Gen 4 features.
Low Sound Levels
When Multi V Water 5 water source units operate fully loaded, they have one of the quietest sound levels in the industry. Sound is almost
undetectable during off-peak operation. To promote a quiet, comfortable environment, LG Multi V water source units operate at sound levels
as low as 48 dB(A) in cooling and heating mode at rated AHRI operating conditions.
All rotating components are soft-started by the controller using digitally controlled inverters, which reduces undesirable noise caused by
compressors cycling on and off.
Comfort Control at Its Best
Tight temperature control through precise load matching maximizes the time that the indoor units remove moisture. This ensures maximum
comfort and provides optimum indoor humidity levels.
Precision Load Matching
Unlike traditional air conditioning control systems, which use thermostatic controls to maintain room temperatures, LG Multi V Water 5 controls
continuously vary the indoor unit fan speed and refrigerant ow, indirectly providing lower and more consistent humidity levels in the conditioned space.
The longer the indoor coil temperature is below the dew-point of the room with air moving across the coil, the less the space humidity level varies,
compared to technologies that cycle fans and compressors on and off multiple times per hour.
The water source unit varies the compressor speed as needed to maintain system operating pressure. As a result, the Multi V Water 5 system
delivers precise space temperature control.
Advanced Compressor Technology
Oil Management
Oil migration is no longer a concern when choosing Multi V Water 5. An oil management system ensures a safe level of oil in the compressor
sump.
1. Smart oil system monitors oil sump levels to know when to inject oil into the compressor, eliminating the need for oil return cycles.
2. HiPOR™ oil return system minimizes oil mixing with refrigerant by separating oil at compressor discharge with an oil separator and
injecting oil back to the lower section of the compressor shell. Energy is saved by compressing the refrigerant without the oil mixed at the
compression chamber.
3. Oil injection system provides a consistent film of oil to moving parts, even at low speeds, ensuring compressor operation down to 15 Hz.
Inverter Driven
The scroll compressor is optimized to maximize compressor efficiency, which reduces power consumption and monthly utility bills. This latest
inverter technology allows the LG Multi V Water 5 to vary the compressor motor shaft speed to deliver an appropriate amount of cooling to all
indoor units. Precise refrigerant volume delivery translates into long periods with coil surface temperatures below dew point and minimizes
compressor component run time. Occupants remain comfortable while utility costs are reduced.
PRODUCT FEATURES AND BENEFITS
Multi V Water 5 Water Source Units
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