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7111.1 Genenl: Equipment shall have a minimum peAoimance at the <br />sD�ified rating contlitions not less than the values shown in Table 14-1 <br />ihrough 14-3. II a nationally recopnizetl cehification Drogram ezisis for a <br />product wvered in Tables 144 throug� 143, and R inGudes provisions kr <br />verification and challen0e of equipment ef(�ciency ralings, lhen the product <br />shall be listed in the certificalion program. <br />1t71.2 Ratinp Conditlona: Coolinp equipment shall be reted at ARI test <br />condilions an0 procedures when availa�le. Where no apPlicable <br />proceAures exist, data shall be fumished hy the equipmenl manufacturer. <br />1117.9 Combinadon Spaea a�d Service Wabr Haatlny: For <br />combination space anG service water heaters wilh a pnncipal lundion ot <br />provi0ing space heal, Ihe Combinetl Annual Efficiency (CAE) may be <br />wkulated by using ASHRAE Standard 124-1991. StoraBe Water heaters <br />used in combina�bn space heal and waler heat appliwtions shall have <br />either an Energy FAdm (EF) or a CAE of not less Ihan Ihe folbwinp: <br />EF CAE <br />< 50 gal slorage 0.58 G.71 <br />50 to 70 gaI storage 0.57 0.7t <br />> 70 gal storege 0.55 0.70 <br />1l17.� Paakaged Electrlc Heatlng and Cooling Equlpment: Packaged <br />eledric equipmenl provitling bolh healing and cooling wilh a total cooling <br />capaciry greater than 20,000 Btum shall be a heat pump. <br />Ezcaptlon: Unstalfed equipment shaelters or cabinets used <br />solely for personal wireless service facilities. <br />1�12 Controla <br />1112.1 Temparature Controls: Each system shall be provided with at <br />least one tempe2ture control device. Each zone shall be conlrolled by <br />intlividual ihertnostatic wntrols responding to temperaWre within the zone. <br />N a minimum, each floor of a 6uilding shall be considered as a separate <br />zone. <br />1412.2 DeedW ntl Controls: When used to �onlrol bath wmfort healing <br />and cooling, zone �hermostatic contmis shall 7e capable of a deatlband of <br />al leas� 5 degrees F wilhin which Ihe supply ol heatinB and woling energy <br />to Ihe zone Is shut o%or retluced to a minimum. <br />Exceptlone: <br />1. Special oc: upancy, s0e�ial usage. or code requirements <br />w�ere deadband coNwis are not appropriate. <br />2. Buildings complying wilh Sedion 1141.4. if in lhe proposed <br />building energy analysis, heating and �.:c;oling Ihermostat <br />sefpoinis are set �o the same lemperature �etween 70 <br />de8rees F and 75 degrees F inGusive, znd assumed to be <br />wnstant Ihroughout the year. <br />3. Thermostals thal require manual changeover belween <br />hnating and cooling modes. <br />1/12.3 Humidity Cantrols: If a syslem is equipped wilh a means for <br />adding moisfure, a hunidistat shall be pmvitled. <br />1612.4 Setbeck and Shut-0H: HVAC systems shall be equipped with <br />aulomalic controls rapa6le of accomplishina a redudion of energy use <br />through control sPlback or equipmenl shuidown durind Otlnods ol non-us[i <br />or altemate use r.f the spaces served by Ihe system. The automatic <br />controls shall have a minimum seven-tlay clock and be capable of being <br />sol for seven diflerr.nt day types per week. <br />Exceptions: <br />1. Syslems serving areas which require conlinuous operation at <br />the same temperaWre setpoint. <br />2. [quipment wilh tull load demands of 2 k`.V (6,826 Btulh) or <br />less may be wntrolled by readily accessible manual ofl-hour <br />conlrols. <br />U12.I.1 Dampers: Outsitle air intakes, exhausl ou11e1s anJ relief ouUels <br />servinp contlitionetl spaces shall be equipped with dampers which close <br />automatically when ihe system is eft or upon power failure. <br />Exceptlone: <br />1. Systems serving areas which require continuous operation. <br />2. Com6ustionairintakes. <br />1112.4.2 Optimum Start Controle: Healing and cooling systems wilh <br />desi8n suppiy air capacilies ezceedinB 10,000 cfm shall have optimum <br />stah wntrols. Optimum start controls shall he designed lo au�omatically <br />adjus� ihe start Gme ol an HVAC sYstem each day lo bring the space lo <br />de ireG occupled IemperaWre levels immeaiately before :cheduled <br />occupancy. The wntrol algodthm shall, as a minimum, be a fundion of ihe <br />diflerence between space �emperaWre and oaupied setpoint and ihe <br />amounl of tiine pnor lo scheduletl occupancy. <br />�.�UvyiweeoV�un ouyyim�m�uoivaa�u�oycu..�n�y <br />: lart-up, seFup, and Oe(roat wntlflions. These wnhoh shall anUcipete <br />need kr h=at anE use compressbn headnp as the first atape ol heat. <br />Controls shall inAicate when supplementel heatlng is being used through <br />visual means (e.g., LED indicators). <br />1N2.6 Combuttlon Hutlnp Equlpmmt ConGola: Combustion �eating <br />equipment with a caDaciry over 225.000 Btu/h shall have rtwdulating or <br />staped combustion control. <br />ExcrpUont: <br />7. Boilers. <br />2. Radiant Healers. <br />1�12.7 B�Iancinp: Each air supply oullet or air or water lerminal device <br />shall have a means for balancing, including but not limited lo, dampers. <br />temperature and pressure test connectlons anG balancin0 �alves. <br />1�13 Alr Eeonomizen <br />1111.i Op�ratlon: Air ecanomizers shall be olauWmatically modulatinp <br />outsida antl retum air Campers to provide 100 percenl of Me tlesign supply <br />air as outside air to reduce or e6minate the need for mechonical cooling. <br />1413.2 Control: Air economizers shall be controlletl 6y a control system <br />capa6le o1 de�ermininp if outside air can meet part or all ol t�e building's <br />cooling loads. <br />t113.3 Integntad Oparation: Buildinp Ha�GnB Enarqy: Alr economizers <br />shall �e wpatrle ol providinp paNal cooling even when aAditional <br />mechanical coolinp Is requiretl to meet the remaintler of Ne cooling load. <br />Conlrols shall nat OraGude ihe economizer operelion when mechenical <br />cooling is required •.imultaneously. <br />Exeeptbn: Ewnomizers on intlividual, tlired expansion, cooling <br />syslems with capacities not greater t�an 75,000 BIWh may <br />inGude conirols that limit simultanaous operatlon of the <br />ernnomizer and mechanical coolinp for the puryx�se of prevenlinp <br />ice lormation on cooling wi!s. <br />1N4 Ductinp Syelema <br />1�14.1 Sealing: Duct work which is designed lo operale al pressures <br />a6ove 72 inch water column static pressure shall be sealed in accortlance <br />viith Stantlard RS-18. E�ten� ol sealing required Is as folbws: <br />1. Stalic pressum: 1l2 inch to 2 inches; seal Irdnsverse joinls. <br />2. S�alic pressure: 2 inches l0 3 inches; seal all transverse joints <br />and bngitudinal ;nams. <br />3. Stalic pres:�2: above 7 inches; seal all iransverse joints, <br />longitudir.al seams anC tluct wall penetrations. <br />Dud tape and other pressure sensitive tapa shall noi be used as (he <br />primary sealant where ducls arc tlesigned to operato at staUc preswres of <br />7 inch W.C. or greato . <br />141�.2 Insulatlon: Ducts anC plenums �hat are conslructeG and function <br />as part of ihe building envelope, by separatirg in�enor space from eztenor <br />space, shall meel all applicable requirements of C�apte: 13. These <br />requiremenls inGutle insulalion installation, moisture co drol, air ieakage, <br />and builtling envelope insulation levels. Unhealetl equipment roo.rs with <br />combustion alr louvers must 6e isolatM from ihe wnditioned spac. 6y <br />insulating intenor surtaces to a minimcm of R-11 antl any exlenor <br />envelope surfaces per Chapter 13. Oulside air ducts servinp IntllvMual <br />supply air unils with less ihan 2,800 chn of total suDP�Y air capacity s�all be <br />insulated to a minimum of R-7 and are not considered building envelope. <br />Other outside air duct runs are considered buiWing envelope unGl Ihey, <br />1. connect lo the heating or cooling en,uipment, or <br />2. ara isolatetl hom the ezlerior wilh an automatk shu4of( damper <br />complying wilh Section 1412.4.1. <br />Once outside air ducts meet the aDove IisteC requiremenls, any runs <br />within wnditloned space shell compy vrilh Table 14-5 requiremems. <br />Other tluc�s antl plenums shall be Ihermally insulated per Table 14-5. <br />E:captlons: <br />1. Within the HVAC equipmenl. <br />2. Exhaust air ducts not su6ject to conEensation. <br />3. Ezposed ducN+ork wunin a zone that serves ihal zone. <br />1415 Piping Systems <br />7116.1 Ineulation: Piping shall be thermally insulatetl in aaoraance with <br />Table 14-6. <br />Exception: Piping installed within unilary HVAC equipmen�. <br />Water pipes outside Ihe contlitioned space shall be insulated in <br />accoMance with Washington Stete Plumbing Cotle (VJAC 51-26) <br />1116 r,ompletion Requiremanb (Raler to NREC Section 1416 antl fhe <br />Buiitliny Commissioning Guitlalines, published by the Building <br />Comm�ssioning Associutwn, lor complete fext and guidefines lor buildinp <br />completion and commissioning requiremenfs.) <br />