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2001 W n ton State Nonresidentlal Ene Code Cor, nce Fortn <br /> . . <br /> zooi w.uurq�m sir rw...a«�w E�cros ca�miw�o.F«�. <br /> .x�,.xooi.K.n� <br /> Mechanical-General Requirementa • �v o : n ry a r ea�Pum�s a �nc e <br /> 1111.1 G�n�nl:Equipmenl shali have a minimum paAortnance at Me microproceseor coMrole thal minimize eupplementa��eat usege dunng <br /> speafied nting conditiona not less than the values s�own in Tabb 16•1 gm^-'�7,set-up,and dehost conAitbns. These coMrole shall antidpate <br /> thmugh 14•3.If a na6onally recognized cetlification progrom exists for a '���0r Mat and uae comproasion beatlnp as the first sfage of heet , <br /> producl wvered in 7a61es 14•7 Mrough 14-3,and it includee provieions for Controle shall indicate when supplemenial heaUng ia being used through il <br /> verification and challenga ol equipment aRiciancy ra6nga,ihen tlia pmtlud �isual means(e.g,LED indicatore�. <br /> shall 6e Ipted in the cartification program. U72.6 Combuatlon Hwtlnp Equipm�nt Contro4;CombmGon Metlng � <br /> 7N1.2 R�qnp CondWonr.Cooling equipment shall be raled at ARI test equiDment with a cepatiry over 225.000 BfWh ahell have moEulating or <br /> conEitions and proceAures when aveilable.Whare no appliwble »9��mbuaGon control. <br /> procedures exiet,tlata shall be luminhed by tha aquipmenl manufacturer. E=ceptlons: <br /> 9N1.]CombMatlon Sp�e�antl Sarvke Watar Hsatlnp:For 7. Boilen. <br /> wmbineGon spece and service water�ealen with a prindpal funclion of 2. Ratliant Heatern. <br /> providing space heat,the CombineG Annual Efickncy(CAE)may be 7112.7 Balancia0�Each air supply oWet or air or water tarminal device <br /> cakulatad by using ASHRAE Stan0artl 124-1987.Slorage water heaters shall have a means lor balancing,includirg Gut not limited to,dampan, <br /> useA in combination space heet and wa�er heat applicetions shell have tempe�atura and O�essure teat connedions and balancing valves. <br /> either an Energy FActor(EF)or a CAE ol nol lass than tha folbwing: 141]Alr Economk�n <br /> EF CAE 1N7.1 Op�rallon: Air ewnomizen shell be of eutomaticatly moAuleting <br /> <50 gal storage 0.58 0.77 outside anA return air dampeB to provide 100 percent of tha design supply <br /> 50 to 70 al store e 0.57 0.71 air aa outaitle air ta reduce or eAminaM the neeA for mechenical coolinp. <br /> >70 al s7ore e 0.55 0.�0 ��»•Z Control: Air economixers shall6e conholled by a wntrol system <br /> 1I11.{P�eMapW El��trk M��tlnp arW Cooling Equlpment:Packa ed ��able of datertnining if oWaide air cen meet part or all ol ihe building's <br /> eledric equipment providing boM heating antl cooling wdh a total cooling cooling IoaEs. <br /> wpacity greater t�an 2�,000 Btu/h ahall ba a heat pump. ��1�•�Inbpnbd Op�ntion:Bullding H�atlng Energy:Air ewnomizers <br /> Exe�Ptlon:Unstalfea e ui shall bn capaWe of providinp parGal coding aven when atl0itional <br /> q pment ahaefters or cabinets used mechanical cooling n raquiretl to meet the remainder of the coolin IoaA. <br /> solely for personal wireless servica fecilitiee. Conhols shall not preGude the economizer operotion when mechanical <br /> 1172 Controls wolin �s <br /> 147tA Tsmpmturo Controb:Each syslem shell be provided wilh at 9 reQuired simuttaneously. <br /> least one tempereture control device.Each zone shall be controlled by Ex�eptlon: Economizers an indi�ridual,tliraq expaneion,cooling <br /> individual Mertnosta6c wntrole respontling ta tempereWre vnthin tha zone. syetems wilh capecitiee not yreeter Man 75,000 BtWh mey <br /> At a minmwm,eech Noor of a building shall ba conaidered as a seperate include controls thet limit eimultaneoua oparatlon ol the <br /> Za�a economizer and mechaniw�cooling for tM purpose of proventing <br /> 7472.2 D�adWnd Controls:When usoO ta control both comfort heatl ��e forma�on on coolirg wih. <br /> anC cooling,zone thermostatic controls shall be capable of e deadband of �471 DueUnq Syshms <br /> at least 5 degreee F within which the supply ol heating and cooling energy ����'�$ulinp:Ducl work which is tlesigned to opereta at pressures <br /> to the zone is shut oH or reduced to a minimum, above 1l2 inch watar column stetic preesure shall be sealed in accordance <br /> E:captlona: with Standard RS-18. Extent ol seeling required ie as Iollrnw: <br /> 1. Speciai occupency,special usage,or codo requiremenls �� Static praeaure: 1/2 inrh to 2 inches;seel transverse joints. <br /> whera deadband conhola ara not appropnate. 2. Static preeaure; 2 inches to 3 inchas;seel all tranaverse joinh <br /> 2. Builtlings wmplyinq wilh Section 1141.4,if in(ha propased and longitudinel seame. <br /> buiMing enerpy analysis,heating end cooling thermostal 3. Static pressure: above 3 inchea;seal ali transvene jointa, <br /> setpointa are set to the same tempereNre between 70 �ongitudinal seams antl Euct wdl penetnibna. <br /> degrees f and 75 tlegrees F inclusive,and assumed to 6e Dud tape end oMer presswe aenskive tapa shall not be unad en the <br /> constent throughout the year. primary eealant where ducis ere dasgned to operote at efaNc preasures ot <br /> 3. Thermoctats that require menual changeover between � inch W.C.or greatar. <br /> heating and cooling modes. 1471.21n�ulation:Duds and planums that are conahuded and function <br /> 7412.J Humidlry ControN:II a system is equippetl with a meane for as part of t�e building envelope,by separating inbrior space from eulenor <br /> adding moislure,a humidietat shell 6e provided. sPace,s�all meet ell applieabla requiremente of Chapter 13.These <br /> I 1N2.�SatCack antl Shut-0%:HVAC syslems shall be aquipped with requirementa inGude insulation metallNion,moieturo control,air leakape, <br /> autometic conVols capable of eccomplishing a reduction af ener use and builEing envebpa iireulation levels.Unheated equipm�nt rooma wiM <br /> through control uMack or equipmant shutdown dunng perioEs of non-usa COmbuation air louvera must ba isolated from the wntlltfoned space by <br /> or aMemele use ol ihe spaces served ty the system.The automatic insuleting intenor surtxes to a minimum of R-11 and arry exlanor <br /> controls shell have a minimum aeven-day clock and be wpa6k ol being envelopa surlacee per Chapler 13.Oubitle air ducb eerving individual <br /> set for seven dMerent day types per week. supply air units with lecs then 2,800 chn ol totel suppty air capacity s�all he <br /> Ex�eptlon�: insulated to a minimum of R-7 and aro not coneidared building envelope. <br /> Other oubitle air duct runs are considerod building envelope until they, <br /> 1. Syslems serving areas which require continuous opere4on et 1. connect to tha heafing or caaling equipmanl,rn <br /> Ihe same temperature setpoint. 2, ara nolatetl from the extenor with an automatic shut�oH damper <br />. 2. Equipment with full load demends of 2 kW(6,826 BN/h)or complying with Sectlon 1412,1.1. <br /> less may ba controlled hy readily accessiDle manual oH-hour Once outside eir ducts meet the above liated requiremend,any runs <br /> cantrols. within conAitloned s aca ehall com <br /> 1472,t.1 Dampen:Outside air intakes,exhaust outiets and relief outleh P WY�+'�W Table 14-5 requirements. <br /> serving conditloned spaces shall ba equipped wiM dampers which close ahar Aucls and plenums ahall be Uermalty insulated per Table 14-5. <br /> automatically when the system is oft or upon power failura. Exe�ptlons: <br /> Excaptlone: 1. Within tM HVAC equipment. <br /> 7. Systems servin�areas w�ich require continuous oparation. 2� Exhauet eir ducb not subject to wndensetion. <br /> 2. Combuetion air Intakes. 3. Exposad ducMrork vnNin a zo�re Ihat serves Mat zone. <br /> 141YA.2 Optlmum Sqrt Conlrols:Heating and cooling systams witb �+�s P�P��a Sn��� <br /> design supply air capacities exceeding 10,000 ctm ahall have opumum 7415.7 InsuAtlon:Piping shall be tMrmelly insulatetl In auortlance Nrith <br /> start controls.Optimum start controls shell�e designed to automatiwlty Table 14-8. <br /> adjuat lhe slatl lime of an HVAC system each day to hnng Ne space to Eac�ptlon:Piping inshlleO wlthin unitary HVAC equipment. <br /> desired occupied lemparature levels immadieley before xheduletl Water pipes outslde the candRioned spece ehell be inaulaled in <br /> occupancy.The comrol algonihm shell,ae a minimum,be a function o(Ihe eccordence with Waehington Shte Plumbing Code(WqC 51-28) <br /> diflerence betwean space temperaWre and occupietl setpoint and the 7118 Compl�tlon RpWnm�Ma�Reler fo NREC Section 11/6 aM fhe <br /> amounl ol time pnor to scheduled occupancy. Building Commissioning Guidelines,published 6y the Buildi� <br /> Commissioning Associefbn,/or complefa text end guidelines/or building <br /> completion and cammissbning raquirements.l <br /> ��� <br />