In the autumn of 2011, Bruner technicians performed routine maintenance on seven make-up air units at One Miranova Place in Columbus, Ohio. The seven make-up air units providing fresh air to the kitchens of over one hundred condominiums were found to be unsafe for operation, due to cracks in the gas fired heat exchangers, which could allow carbon monoxide to enter the living spaces of the tenants.
To provide a temporary repair, Bruner welders sealed the leaks, allowing the units to remain operational until new make-up air units were available for installation. These repairs, while temporary, allowed the Board of Directors at Miranova time to investigate several options for a long term solution.
After receiving several proposals, the Board decided to accept the solution provided by the Bruner Corporation. With advice from Prater Engineering, the Board accepted the offer from Bruner to remove the aging make-up air units, and install seven new “Aaon” 100% fresh air make-up air HVAC units. The new Aaon units, with technological advances not available 15 years ago, provide increased energy efficiency and extended longevity.
One of the major obstacles facing Bruner was the difficulty in removing the existing units and mounting the new units to the rooftop of One Miranova Place, nearly 340 feet above street level. After consulting with several crane companies, it was determined that the most economical means of replacing the units would be to utilize the services of Midwest Helicopter, a company specializing in lifting equipment inaccessible to conventional hoisting systems.
In preparation for the helicopter lift, Bruner technicians, led by Bob Hoffman and Don McNeal, [John Magill and Brian Caton also] spent many hours to assure that all components were able to be safely and efficiently lifted to and from the building. Their efforts paid off, as the total time required to remove seven units and mount seven new units was under one and a half hours, nearly a fifth the time required for conventional hoisting methods.
With an extreme focus of safety and customer satisfaction, Bruner has once again demonstrated our commitment to excellence. Even during this potentially dangerous helicopter lift, the interruption of business to Miranova One (condominiums) and Miranova Two (office building) was negligible.
Hats off to the Bruner team for making this event run so flawlessly.