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- Systems wi�h a design oulsi,,air Intake or exhaust capacity of 300 cfm(140 L/s)or le:.�. <br /> � 15. PJI e�upply a:xl retum ducls and plenum inslelled as paA of an HVAC air distribution system must be thermally insulalad: <br /> � R-6 fw supply air Cuds located outsidu the building,in ventilated attics and in unvented altic above insulated celliig, <br /> F-3 5 for supply air dud inaulation in unvenled atlic with iwt insul�ton,unconditioned and undergmund spaces, <br /> F-3.5 for retum air Cuds Ixatod outside tho building,in venlilalud��fli�and in unvented attic above insulaled ceiling. <br /> �6. Whero humidistatic contro�s are provided,such contmis must prevem rehuating,mixing of hol and cold air streams,or other means ot <br /> simultaneous healing and coolirg of�he same air slream. <br /> Exceplian(s): <br /> - Copabinry of firsl r[dudng supply r'r volume Pi0%or less ot the desgn ra�e ir minimmr�.oo�door air ventilalion,or per regulatory <br /> st.mdaid,whichever�a�.^mer,'niforu combined haatinglcooling ocwrs. <br /> - Couling ppadry�80 kBtuR�and capability lo unbad caoiirg equipment. <br /> - Cooling capidry<40 Y.Bl�lh. <br /> • Syslems sorving spaces where rigid humidiry requiraments exist.Seu code languagu fur qualilying spaces. <br /> - Silo•mcovered or sito-solar energy sources o�. <br /> - Use of a dosiccant e;retems. <br /> 17. Individual kNchen ezhaust hoods larger than 5000 dm must be pmvidiW wilh make-up eir sized for a1 leasl 50%ol exhausl air volume <br /> Ihat is uncoolted and either unhealed or healod to no more ihan 60°F <br /> Exception(s): <br /> - Whero hoods are usad to azbaust vontilation air ihat would othorwise axfiltrate or be ezhausled Uy other fan systems. <br /> - Certified grease oxtraclor hoods that require a face velodry rw>60 fpm. <br /> 18. BuiMings with tumo hood systems havinp an exhaust r2te>15,000 cfm has at least ono of the following featcre� <br /> a)VAV hood ezhaust and room wpply systems capable of redudng exhaust ard makeup air vdurt�e to 50%or less of design values. <br /> b)Dired makeup(auziliary)air supply equal to at least 75%of�he ezhausl rata,heated rw warmer L'ian 2'F beloM'room selpoint, <br /> coded to rro coder than 3°F abovo room setpoint,rw humidification addod,and no simultaneous heating and cooling used for <br /> dehumidificalion conird. <br /> c)Heat recovery systems to pfecondition makeup air from fume hood exhaust fn accordance wilh Section 6.5.6J,Exhaust Air Energy <br /> Recovery,witliout using any exception. <br /> 19. �ndivlduai tan systems wdh a design supply air capacity of 5000 cfm or greater and minimum ouLside air supply of 70%or groaler of the <br /> supply air capadty must have an energy recovnry system with al Ieast a SOYo etfectiveness.If an air economizer is also required,heat <br /> recovery must be bypassed a con[mlled to pertnit air econornizer operation. <br /> ExcpPtion(s): <br /> - Laboratory fume hood systems with a total e�aust rale<=5000 cFm. <br /> - Systems serving spaces Ihat are not cooled and heated lo<60'F. <br /> - Systems wilh more ihan 60%o'the outdu�r heating energy is provided fnm site-rewvered or site solar energy. <br /> - Systems ezhausting loxic,flammable,paint,or mrtosive fumes w dust. <br /> - Commercial kitchen hoals used for col!eding and removing grease va�wrs and smoke. <br /> - Systems requiring dehumldification ihat empioy energy recovery in series with ihe cooling wil. <br /> - Whaie the largest exhausl source is less lhan 75%ot the design outdoor oirllow. <br /> - Cooling energy remvery. <br /> 20. All service wa�er heating requirements aro listed in requirements section spedfic to Ihe syslem. <br /> Report date:OB127l12 <br /> Project Tille: 7•Eleven Inc e 8 of 8 <br /> Data Glename:J12072 Projects112-00169 1029573 Evere��,WA Evorgreen Way�MEP�Energy Calcs\12-00169 Everett WA.cck Fe9 <br />