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Mixed-Use Space Turns to VRF for Complete Solution

Originally published: 12.01.19 by LG Air Conditioning Technologies


Opened more than a century ago, The Ebell of Los Angeles and the accompanying Wilshire Ebell Theater participates in and encourages the educational, cultural and social growth of the Los Angeles community, working with a wide range of artists and promoters from around the world to bring performing arts to the diverse population of the city.

The complex has been owned and operated since 1927 by the Ebell of Los Angeles women’s club and was added to the National Register of Historic Places in 1994, solidifying its status as an iconic structure.

With a variety of spaces within the structure, The Ebell of Los Angeles houses a performing arts theater, office spaces for staff and smaller rooms for special events. With the need to replace an old, inefficient cooling towers and chiller system that only cooled the theater space, The Ebell of Los Angeles’ management team sought a new innovative HVACR solution to address the full needs of the theater and the occupants throughout the larger complex.

Challenge

The facility management team required a versatile system that would both respect The Ebell of Los Angeles’ recognized status on the National Register of Historic Places and meet the theater’s needs to cool, heat and


dehumidify the front and back stage areas. Additionally, the system needed to provide air conditioning for the building’s event hosting spaces, which the old system did not provide for beyond the theater.

The new system needed to maintain the aesthetically appropriate historic qualities of the landmark property while delivering high performance and enhanced energy savings. A key requirement for the new HVACR system was design flexibility. The Ebell of Los Angeles’ unique and historic architecture presented a substantial obstacle due to the structural difficulties of installing outdoor units on the roof of the building, which meant the new system would have to be flexible enough to fit in two places — the confines of the basement, where the old chiller was housed, and discretely around the exterior of the theater.

Finally, due to the varying occupancy throughout the entire property, the system needed to effectively condition each space with a wide range of heat loads and provide effective dehumidification to the cavernous theater space.

Solution

After carefully evaluating the criteria, the building’s General Manager and Chief Operating Officer Philip Miller, in conjunction with mechanical engineering firm Athena Engineering, designed an efficient and seamless solution that would allow for occupant comfort in the theater and event spaces.

After carefully reviewing the requirements, DMG Corporation, the project’s HVACR Equipment Solution team, recommended LG AHU Conversion Kits paired with Multi V 5 Variable Refrigerant Flow (VRF) condensing units. LG’s VRF technology was selected because it excels at sensible cooling and the modularity of the design enables the overall system to properly condition the varied spaces throughout the theater and event spaces despite the heating and cooling load changes caused by shifting occupancy. Prior to installing LG, the Ebell maintenance team had to use large and noisy portable air conditioners to keep the rooms cool. Now with LG’s VRF technology, the spaces are quickly and quietly conditioned for optimal guest comfort.

Due to the unique aspects and structure of the building, Athena Engineering designed a custom-built system that replaced the old chiller structure with LG’s condensing units, which were easily installed on the exterior of the theater. The new units feed into LG’s AHU Conversion kits that are housed in the theater’s basement. The AHU Conversion Kits, consisting of EEV kits and Communication kits, were then able to communicate with coils stacked within the new custom AHUs to drive the temperatures of the coils lower to effectively dehumidify and condition the air to increase comfort exponentially. Additionally, LG’s MultiSITE Communications Manager was installed to allow the LG systems to communicate with third-party controls for seamless system management.

Ultimately, the basement and outdoor space behind the theater were used to house the LG AHU Conversion Kits and 4 Multi V 5 VRF systems, comprised of 12 modules.

Result

For nearly the same cost as a traditional system, with greater savings and overall efficiency over its lifespan, The Ebell of Los Angeles now has a highly reliable, energy-efficient HVAC solution that delivers comfort and convenience for its occupants.

Ultimately, the LG Multi V 5 outdoor units and AHU Conversion Kits allowed for a flexible design that worked with the existing ductwork to deliver an energy efficient, flexible and HVAC system. LG’s controls also made management from one central location effectively seamless for the owners and maintenance team.

Jordan Jones, sales engineer, DMG Corporation added, “LG’s VRF system gave us the capabilities to meet all of the demands as we were navigating the complicated installation process. If you’re trying to identify a system that is efficient, compact and ultra-responsive with great controls, LG just fits the bill for these types of projects.”




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Articles by LG Air Conditioning Technologies

Mixed-Use Space Turns to VRF for Complete Solution

For nearly the same cost as a traditional system, with greater savings and overall efficiency over its lifespan, The Ebell of Los Angeles now has a highly reliable, energy-efficient HVAC solution that delivers comfort and convenience for its occupants.
View article.