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1N7A General: Equipment ahall have a minimum peAurmance at Ihe <br />specified ratlng condRions nW leas ihen the valuee ahown In Tede 14•1 <br />lhrough 14•3. It a netionelly rernOnized ce�catlon propram ozists for a <br />product covered in TeWes �141 through 143, and R includes provicions lor <br />verification end chellenqe of equipmenl eRdenry retln{�, ther tne product <br />shall bo listed m lhe certificeEon program. <br />1417.2 RaHnp Condltlons: Cooling equipment shell be rated nt AR! teai <br />contlitlone and procedures wfien availablc. Whare no applicaMa <br />procedures exist, data shall be lumishad by �he equipment mnnuPawurer. <br />7411,J Combinatlon Space and 3erWce Wa6ar Heatlnp: For <br />combinatlon spece end servite water heaters with a principal fundion of <br />providng space heat, the Combined Mnual Efficienry (CAE) may be <br />calculated ty using ASHRAE Stantlard 124-1891. Srorage water heatets <br />used In combinadan epeee heat end �va�er heat eFplicetlons shall have <br />either an Eneryy FActor ([F) or a CAE ol not lesa �hen the ldlowiny <br />SO to 70 al stora e 0.57 0.71 <br />� 70 gal storage 0.55 0.70 <br />1411.4 Packaped Electric HeaHnp and CoolinQ Equipment: Packep^d <br />Neddc equipmenl pmvi6ng both heaBng end coolinp xith e lotel coolinq <br />cepadty preatnr than 20,OOU Btu/h ehall 6e a heat pump <br />Exception: Unstafled equipmnnt shaelters or cahinets irsed <br />solely lor personal vArelns servica facilities. <br />1412 Controls <br />1412.1 Temperature Contruls: Eech system shall be provitled with at <br />leaat ona tempereture contrd N.vice. Eeth zone ehell be controlled by <br />individual thertnostetic contrda respu�ding to tempereture within the zone. <br />At e minimum, each Ooor af a huildinQ ehall be cc^aidered as a separate <br />zone. <br />1472.2 Deadband Controls: VJhen uaed to contrd both rnmiort heatlnp <br />end cooNng, zone thermoststlt contrds ahall be capade of e deadband of <br />et least 5 degrees F within wfiich the supply ol hea6ng and coding energy <br />to the zone is ahut o%or reduced to a min�mum. <br />Exceptlons: <br />1. Spedel occupanq, apedei usage, or code req�rirementa <br />where deedband controls ere not eppropriate. <br />2. Buil�nps complyinB�+�h Settion 7141.4, ilin ihe ptoposed <br />buildinp enargy enalysia, hea0ng end cooling tharmostat <br />setpdrtls are set to Ne seme temparaNre beRveen 70 <br />degrees F and 75 degrees F inGusive, and assumed to be <br />co;istant Nroughout Ne year. <br />3. Thermostah Nat require manual changeover �eM1veen <br />hsating antl codinp modes. <br />14123 Humldlry Controls: If e system is equipped vnih e means for <br />eddng moisture, a humidistst shall be prwitled. <br />141t0 Sclback and ShuGOff: HVAC systems shah be aqulpped with <br />eutomatic contrds capaWe ol occomplishing e reducUon of enerpy we <br />through mntrd setback or equipment shWdr.vn durinp periods of non-use <br />or alternale use of the spaces serveC try Ne system. The eutomatic <br />contrds shall have a minimum seven-day Gock end be capade of beinp <br />set for seven diBerent day rypes per week <br />Exceptlons: <br />1. Systoms serving areas which require conGnuous operaGon et <br />the same tempereture setpoint <br />2. Equiqnent �+ith IWI losd demands a12 kW (6,826 Btulh) w <br />lau may be controlled by readity accesside manual ofl•haur <br />crontrols. <br />1412.4.1 Oampers:0ulside eir Intekes, eshaust outlets end reliel o Wets <br />serving conditianed spaces shall be equipped with dampers whicn dose <br />eutomaticalty when tho system is oN or upon powe� lailure. <br />Exceptlons: <br />1. SystemsservingareaswhichrepuireconGnuousopetatlon. <br />2. Combus6oneirlMakes. <br />1412.4.2 Optlmum Start Controls: Hea6np anC codinp systems with <br />desipn supply nir capanlies ercee6ng 10,000 dm shall heve optlmum <br />sWrt controls. Optimum start controls ehall be desipned to automatically <br />adjust Ihe start Ome of an HVAC system each dey fo bdnp the spece to <br />desired occupetl temperature levels Imme�ately batore acheduled <br />occupancy. The contrd elgonlhm ehall, as a minimum, be a func0on o1 Ne <br />dAfsrenco belween apaca temperature and omuped sefpdM end Ne <br />amount ol ome pnor to scheduled occupanty. <br />micmpraeesor conuols that minimize eupplemental heet irsage durinp <br />atart-up, set-up, and detrost aindNons. These conirols nhell entidpate <br />n�ied for hest and uea comprassion heaEnp as tha 6rxt sta8e ot heaL <br />Controls shall inMcate v.fien supplemental heetln0 is being used Ihroi ph <br />visual means (e.g., LED indicetors). <br />11128 Combustbn Healiny Equipment Controls: CombusUon beaEnp <br />equipmeM vAn a capadry over 225,000 BIWh s�all have modWetinO or <br />steped combuation control. <br />Facepdons: <br />1. Boilers. <br />2. RediantHealeB. <br />74127 Balencinp: Eech air supply o W et ot air or weter terminal device <br />shall have e mesfn for balendnp, inGudirrg but not limited to, dampers, <br />temperolum and pressure test connections and balendrg valves. <br />1413 FJr Economiza. <br />1473.1 Operotlon: Pir aconamizers shell be of eulamati:ally moEulaling <br />outsitle end return alr Eampen to provide 100 percent of the design suppty <br />airas outside air to reduce or eliminate lhe need for mechanical coWinp <br />11132 Control: Plr economizen sha� be controlled by e control eystem <br />capade of determininp if ou�i�e ait can meet part or ell of tha buildng's <br />cootinp loadv. <br />1473.31nteprakd Operatbn: Bulldinp Heatlnp Enetq)' Air economizers <br />shall be cepade of providinp partlal coding even when addiGonal <br />mechanical coolinp is req�nied to meet tho remainder of Ihe codinB laed. <br />Contmis ehall not predude the eronomizer operatlon when mechankol <br />cooNng is required simultaneously. <br />Ezcepllon: Ernnomizers on indvidual, d�red expamion, eooling <br />systems v+ith capacNes not Oreater than 75,000 BtWh may <br />induda comrols that limit simuhaneoue operofion of toe <br />economizer end mechanipl cooling tor the purpose of preventlnp <br />ice lormafion on codinp cdls. <br />1414 Dudinp Systems <br />1414.1 Sealiip: Duclworkwhich is desiBned to operote at pessures <br />abave 12 inch �rater rnlumn ststic pressure shali be sealed in accordance <br />wiN ShandarC RS78. Extent of seeling raquired ie as fdlwn: <br />1. Sta6c pres�:ure: 12 inch to 2 inc�es; seal transverse Jointa. <br />2. Staticpressuru:2inchesM3lnches;sealallUar�sverseJdnts <br />and longi.uanal seams. <br />3. Stetic pessure: above 3 inches; seai all trarrsverse junts, <br />longilud�nal seams end duct�vall penetratlons. <br />Duct tepe and olher pressure sensiWe tape chall not ba useC es the <br />pnmary sealantwhero duGs are tlesfpnetl to operate et staUc pressures of <br />1 in�h W.C. or greater. <br />1414.21nsulallon: �uds end plenuma Nat are consW cted and functlon <br />es part of lhe b�nldnq emNopn, by aeparatinp Interior space Irom ertenor <br />space, ahall meet all eppimde roquiraments of Chapter 13. These <br />requiremants indude {nsulatlan imWllatlon, molsture conVd, air leakaqe, <br />and builGnp envelope insulation IevNs. Unheated equipment mans with <br />combus6on air louve�s must be isolatedlrom the condtloned space by <br />insulsEng intenor surteces to a minimum of R-11 a�d any exterlor <br />envelope surfaces per Chapter 13. Oulside air duch serving inAividual <br />supply air units �+ith less than 2,800 dm of total supply air wpacity ahall be <br />iinWaled to a minimum ot R•7 and ere nol comidered buldng envelope. <br />Other outslde aly duct mns ete c�nsidered Wildinp emelope untll lhey, <br />1. mnneG to the heaEnO or eodinp equipment, or <br />2. are isolated Imm the extenorwith an eutomaGc shu4oR damper <br />complyin9 �� SecCon 14124.1. <br />Once oulside eir ducts meet the above listetl requirements, any rur�s <br />v.ithin condi6oned spece sAell comply wiN Tede 14•5 requiremenls. <br />Olher ducis end plenums shell be ffiermelry imulated per TaCle 14-5. <br />Excepllons: <br />1. Wrthin the HVAC equipment <br />2 ExhausteirduGsnotsubjeGtocondensa6'on. <br />3. Exposed duchwrk »ilhin a zone that serves Ihet zone. <br />1415 Plping Systemt <br />1475.7 Insulation: Plpng s�ell bn thermally imulated in accorclance NiN <br />Table 14£. <br />Excepdon: Piping ir�stelled xithin urrtary NVAC equipment <br />Weter pipns outsitle the condtloned spate shall be insulated in <br />accordance vnth Washington Stste PourcGng Code (WAC 51•28) <br />1416 ComplMbn Rpuiremen4 /Refer to NREC Secf,bn 1416 and the <br />8ullding CommissbrVrg Guidalines. pu6lishod by fhe Building <br />Commissionirg Asaoaefpn, lor compfefe foa2 and qudelines (or builMYg <br />mmplefirnendcommission�9iequiremenfsJ � <br />