Department of Engineering ServicesPlumbing and Mechanical Systems Design GuidelinesPLUMBING AND MECHANICAL SYSTEMS DESIGN GUIDELINESPREFACEIntroductionThe designer is required to incorporate the design guideline into the design documents. If a variance is requested, thedesigner should discuss this with Engineering Services. The designer is recommended to read the design guideline inentirety, underline text which the designer has questions or wishes a variance, and then review the underlined sectionswith the mechanical reviewer.EditingUnderlining within the body indicates an edit to the former 2012 Plumbing and Mechanical Design Guideline.TABLE OF CONTENTSGENERAL REQUIREMENTS . 3A. Related Design Guidelines . 3B. Applicability . 3C. Manufacturer’s Installation Instructions . 3D. Submittals . 3E. Procedures during Construction . 4F. Testing and Verification . 5G. Training . 6H. Design Document Requirements . 6II. COMMON WORK REQUIREMENTS . 6A. General: . 6B. Common Motor Requirements . 6C. VFDs . 7D. Common Electrical Requirements . 8E. Meters and gauges . 9F. Flow balance valves . 9G. Vibration and Seismic Control . 9H. Identification . 9I.Insulation . 11III.PLUMBING SYSTEMS . 12A. General. 12B. Plumbing Fixtures . 12C. Isolation Valves . 13D. Backflow prevention . 13E. Water Conservation . 14F. Plumbing Equipment. 14IV.SPECIALTY EQUIPMENT. 14I.2016Plumbing and Mechanical Systems Design Guidelines1 Page

Department of Engineering ServicesPlumbing and Mechanical Systems Design GuidelinesA.B.C.D.E.Electric snow-melt system . 14Ice Machines . 15Freezers . 15Autoclaves, Sterilizer, Cagewashers, and Glassware washers . 15Purewater Systems (RO and DI Water) . 15V. PIPING SYSTEMS . 15A. Piping . 15B. Closed hydronic loops. 15C. Pumps. 16D. Building Steam Systems . 16E. Heat Exchangers . 17F. Boilers . 17VI.HVAC SYSTEMS. 17A. General Requirements . 17B. Spaces with special considerations . 18C. HVAC Zoning . 18D. Indoor Design Conditions . 18E. Heat Transfer Coils . 18F. Cooling Condensate Drain Pans . 19G. Cooling Condensate Traps . 19H. Humidifiers . 19VII.HVAC AIR DISTRIBUTION . 20A. General Requirements . 20B. HVAC Ducts . 20C. Dampers . 21D. Duct Access Doors . 21E. HVAC Filtration . 21VIII. HVAC EQUIPMENT . 21A. Modular and built-up Air Handling Units and Energy Recovery Units . 21B. Air Terminals / Air Valves. 23C. Reheat coils . 24D. Fan Coils. 24E. Server room AHUs . 24F. Fans . 24IX.BAS CONTROLS . 25X. REFRIGERATION EQUIPMENT . 252016Plumbing and Mechanical Systems Design Guidelines2 Page

Department of Engineering ServicesPlumbing and Mechanical Systems Design GuidelinesI.GENERAL REQUIREMENTSA.Related Design Guidelines1. Mechanical and Plumbing design guidelines apply to all design including formal and informalconstruction performed by outside contractors and in-house shops.Manufacturer’s Installation Instructions1.2.D.Control StandardsBuilding Automation Preface and Implementation GuidanceChilled Water Distribution Design GuidelineSteam SystemBSL3 Design GuidelinesLaboratory Design GuidelinesNon-Potable Water Design GuidelinesEnvironmental Chambers Design GuidelineDuring design, the designer shall be familiar with the manufacturer's installation instructions for all specifiedequipment and components. During design, the designer shall incorporate 'recommended' manufacturer'sinstallation instructions into the bid documents in addition to manufacturer’s “required” installationinstructions. At the time of inspection, the designer shall verify that installations fully comply.The manufacturer’s installation instructions shall be available on the job site at the time of inspection and startup as required by NCMC 304.1.Submittals1.2.Submittals shall include a copy of all relevant specifications. For each specification section and subsection thesubmittal shall indicate either “complies” or “deviates” and with explanation. The specification shall precedethe product information.Submittals shall contain the manufacturer’s installation instructions.3.Generala.b.c.Clearances around equipment including air terminals, reheat coils, and air valves shall be sufficient toallow inspection, s