Orange County NC Website
DocuSign Envelope ID: B94F2D40-3B3C-47A7-86C2-6F1 B4F92C62C <br /> Orange County Emergency Services Building Construction Documents <br /> 1. Final settings of all valves, splitters, dampers and other adjustment devices have been <br /> permanently marked. <br /> 2. The air system is being controlled to the lowest possible static pressure while still meeting <br /> design loads, less diversity; this shall include a review of TAB methods, established control <br /> setpoints, and physical verification of at least one leg from fan to diffuser having all balancing <br /> dampers wide open and that during full cooling of all terminal units taking off downstream of <br /> the static pressure sensor, the terminal unit on the critical leg has its damper 90 percent or <br /> more open. <br /> 3.10 SCOPE <br /> A. Test, adjust, and balance the following: <br /> 1. Air Cooled Refrigerant Condensers. <br /> 2. Packaged Roof Top Heating/Cooling Units. <br /> 3. Air Coils. <br /> 4. Air Handling Units. <br /> 5. Fans. <br /> 6. Air Filters. <br /> 7. Air Inlets and Outlets. <br /> B. This Section does NOT include: <br /> 1. Testing boilers and pressure vessels for compliance with safety codes. <br /> 2. Specifications for materials for patching mechanical systems. <br /> 3. Specifications for materials and installation of adjusting and balancing; refer to the respective <br /> system sections for materials and installation requirements. <br /> 4. Requirements and procedures for piping and ductwork systems leakage tests. <br /> 3.11 MINIMUM DATA TO BE REPORTED <br /> A. Electric Motors: <br /> 1. Manufacturer. <br /> 2. Model/Frame. <br /> 3. HP/BHP. <br /> 4. Phase, voltage, amperage; nameplate, actual, no load. <br /> 5. RPM. <br /> 6. Service factor. <br /> 7. Starter size, rating, heater elements. <br /> 8. Sheave Make/Size/Bore. <br /> B. V-Belt Drives: <br /> 1. Identification/location. <br /> 2. Required driven RPM. <br /> 3. Driven sheave, diameter and RPM. <br /> 4. Belt, size and quantity. <br /> 5. Motor sheave diameter and RPM. <br /> 6. Center to center distance, maximum, minimum, and actual. <br /> C. Air Cooled Condensers: <br /> 1. Identification/number. <br /> 2. Location. <br /> 3. Manufacturer. <br /> 4. Model number. <br /> 5. Entering DB air temperature, design and actual. <br /> 6. Leaving DB air temperature, design and actual. <br /> D. Cooling Coils: <br /> 1. Identification/number. <br /> 2. Location. <br /> 3. Manufacturer. <br /> 4. Air flow, design and actual. <br /> 5. Entering air DB temperature, design and actual. <br /> 6. Entering air WB temperature, design and actual. <br /> PDC Project 18102 TESTING, ADJUSTING, AND 23 05 93- 6 <br /> 12/17/2018 BALANCING FOR HVAC <br />