Daikin air conditioners lead the industry with their energy savings and wide model range. The indoor units are extremely quiet in operation, the sound levels are as low as 22dB on some models, which is comparable to rustling leaves. Daikin air conditioning cassette range lead the industry with their energy savings and wide model range. Ideal for home, office or any commercial application. Daikin air conditioning creates a very comfortable climate the whole year round. Daikin Wall Air Conditioning FTX, FAQ, FTXS, FTXJ, FTXZ and FTXM Daikin Air Conditioning Accessories Daikin MXS Multi Air Conditioning Inverter Heat Pump Daikin Air Conditioning Flexi Ceiling / Floor Inverter Heat Pump FLXS Daikin Air Conditioning Mini Cassette Inverter Heat Pump FFQ Daikin Air Conditioning Roundflow Cassette Inverter Heat Pump FCQHG Daikin Air Conditioning Under Ceiling Cassette Inverter Heat Pump FUQ Daikin Air Conditioning Concealed Ducted Inverter Heat Pump FDXS

Daikin Air Conditioning Concealed Ducted Seasonal Classic and Seasonal Smart FBQ And FDQ Daikin Air Conditioning Floor Console Inverter Heat Pump FVXS Daikin Air Conditioning Nexura Conventional Radiator FVXG Daikin Air Conditioning Ceiling Suspended Heat Pump Inverter FHQ Daikin Air Conditioning Altherma Air Source Heat Pump Daikin Air Conditioning Inverter Floor Mounted System FVQ Daikin Air Conditioning Total Heat Exchanger VAM / VKM Daikin Air Conditioning Rooftop Packaged Units (Heat Pumps) Daikin Air Conditioning Floor Standing Comfort Inverter Heat Pump FVQ Daikin Air Conditioning Altherma Hybrid Heat Pump Systems Daikin Air Conditioning VRV IV Heat Pump Inverter Federal Hall National Monument New York, NY USA 60,000 ft2 19th century building Historic preservation with limited space (22) Daikin Vision® Air Handlers built to space requirements, (32) Daikin fan coil units The Federal Hall National Memorial celebrates our nation's history.

George Washington was inaugurated at the original building in 1789, the nation's first capital and home of the Bill of Rights. A bronze statue of first-president George Washington preserves that heritage on the steps of the current structure, built in 1842. In December 2004, with structural issues threatening its integrity, Federal Hall was closed for a major renovation, totaling nearly $16 million. Replacement of the building's HVAC system was included. The historical status of the building presented challenges for the HVAC project. "Because there is no single area in the building to accommodate a central mechanical room, the design called for numerous indoor air handling units all over the building," explains Mike Van Oss, project manager with New Rochelle, New York-based JPR Mechanical, the mechanical contractor on the project. "And, due to architectural and structural concerns, there wasn't a lot of flexibility in sizing the air handlers." Daikin Vision air handling units were chosen because they offer a custom-like solution at a standard production-unit price.

According to Prem-Air New York, the Daikin sales representative for the project, the Vision air handler solution reduced the capital cost invested by the owner by more than 45 percent over the competitor's fully custom solution and significantly reduced equipment production and delivery times. Federal Hall is tightly situated between two other buildings on less than half an acre at 26 Wall Street in lower Manhattan. 3 ton ac unit scrap priceIt originally served as a Customs House and later a U.S. Sub-Treasury, forerunner to the Federal Reserve Bank. lattice to hide ac unitBuilt on a shallow foundation and silty soil, surrounding construction and subway vibrations have taken their toll. gibson heating and cooling unitsLocated within blocks of the site of the World Trade Center towers, the September 11, 2001 terrorist attacks sent seismic shocks to the building, further exacerbating cracking in its foundation.

New underpinnings were a major focus of the renovation project. Mini caissons were drilled down to the bedrock and metal cylinders inserted, filled with concrete. As a result the building will now rest on bedrock instead of soil. A new air conditioning system was also a necessity. "The old HVAC system was broken down and beyond repair to the point of needing modernization and replacement of the entire system, except for existing chillers in the basement mechanical room," explains Mike Van Oss. Designing the air handlers to specification was crucial to the project, given the status of the building as a national landmark. Vision air handlers are produced on a made-to-order basis that allows engineers to size each unit's cabinet in two-inch increments for height and width. "One of the benefits of the Vision air handlers is that you can order them modularly. We didn't have to disassemble them in the field. We just had to get them up to the spaces, some of which were very tight.

The fact that the units were modular really helped our field personnel," Van Oss says. Some 22 Daikin air handlers were installed at Federal Hall, ranging in size from 4×4×4 feet to 8×4×7 feet with approximate capacity from 1800 cfm to 7500 cfm to accommodate the 60,000 sq. ft. building. The three-story building also includes a basement level and two separate attic areas. Charles Asaro, project manager with Humphreys & Harding, the general contractor on the project, confirms the equipment required careful installation without compromise to the original interior which includes storage vaults, extensive marble and an impressive domed atrium. "Some of the air handlers had to be manufactured in smaller pieces and assembled on site in order to get through existing doorways and hallways. To provide cooling to the atrium, venting had to be cut through a six-foot thick section of existing brick arch from the second floor." Preserving the unique structure of the historical landmark without compromise proved challenging.

From the technical perspective, Van Oss says the job was fairly standard. "The Daikin units are part of a closed-loop hydronic system," he says. "We piped all of the air handlers off of the existing risers and provided new piping and connections and put in a new hot water plant." In addition, 32 Daikin fan coil units in two-pipe configurations were installed, primarily in offices located on the building's second and third floors. The HVAC system went online in June 2006 and the building successfully reopened to the public in the fall of 2006. "Everything is working fine," says Hector Fonseca, facility manager of the Manhattan Sites for the National Park Service. The HVAC units are operated from a centralized control system in the basement level and by 30 thermostatic controls located throughout the building. Fonseca notes there's plenty of capacity in the system. "In early spring and late fall, we don't need as much from the system. I'll run with only the air handlers on or on fan coil only, or maybe the air handler with only a few fan coils."