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AI- 5751   4. E. 1.    
Commissioners Court - Regular
Meeting Date: 11/06/2014  
Authorize TASB BuyBoard EZIQC Contract No 2012 Area B-LMC purchase to have LMC Corporation replace the HVAC rooftop units at the Fairgrounds.
Submitted By: Elsa Saenz, Purchasing Department
Department: Purchasing Department  

Authorize TASB BuyBoard EZIQC Contract No. 2012 Area B-LMC purchase to have LMC Corporation replace the HVAC rooftop units at the R. M. Borchard Regional Fairgrounds – Central Pavilion Arena.
The arena is cooled by two Aaon RL-110 Roof Top HVAC Units. The condenser coils and equipment have deteriorated from weathering and corrosion. This results in poor cooling during public events. The existing (refrigerant R-22) units’ operating efficiency is lower than the newer (refrigerant 410-A) units. The existing RL-110 units consume more power as compared to the newer 410-A units. Further, R-22 has been declared obsolete by the USEPA so future repairs on R-22 systems will be difficult and expensive.
LMC Corporation (Texas Buy Board EZIQC Contract No.: 2012 Area B-LMC) would be contracted to restore the HVAC system inside the Central Pavilion Arena by replacing the two existing RL-110 Aaon Rooftop units while keeping the same footprint, installing high volume low speed (HVLS) fans and adding a web based master controller to optimize air conditioning inside the building.

By replacing the two existing deteriorated units (RL-110, Aaon) with identical newer models (RL-110, Aaon) that use the new refrigerant 410-A, the HVAC system will become more efficient because it will have a higher SEER (seasonal energy efficiency ratio) ratio, and will supply cooled conditioned air to optimally meet the design cooling load in the arena while consuming less power. Future repairs and maintenance on 410-A systems will be easier.

The contractor will provide windstorm insurance certificates from the Texas Department of Insurance for the replacement RL-110 Rooftop Units as well as manufacturer’s certification for the HVLS fans.

The purchase in the amount of $624,572.46 will be paid from Department 0141 Fairgrounds 2014-2015 Budget.

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