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State Nonresidential <br />Form <br />Mechanical - General Requirements <br />1412 Controls <br />1412.1 Temperate* Controls: Fah system sham be presided war at <br />least one emperatue ronbul device. Each zone shell be controlled by <br />individual themrostatac controls responding to tamperabae Wilfrid to zone. <br />At a minimum each floor of a building shad be ocraidered as a separate <br />zone. <br />14122 D*adblrld Controls: W than used lu oonbd both cordon Meting <br />rd 000frng, zone IMmmtabc corwds stall be capable d s Aeamard d at <br />least 5 degrees F wow Mich the supply of heating rd mobg OWW 10 <br />to zons is shut ell or reduced to a miNrnxn. <br />Excsptione: <br />1. Spedd ocaperxy, special usage. a code mcluvernents Mare <br />deachard conbds re not •Ppreprleh <br />2. Buildings oomplyirg with Section 1141.4, 0 in to proposed <br />butdkV enoW analysis, heading and cadetg <br />thermostat setponts are sea to to care anpomture <br />between 70 degrees F and 75 degrees F itciusne, <br />and assumed to be constant throughout the Vest. <br />3. Thermostats that rerluve mrud charx]oover between Mating <br />and ouolang modes. <br />1412.3 Hmnidity Controls: it a system is equppd with a mere for <br />ddng mostm, a humdsW shad be pmvided. <br />1412.4 Setback and Shut -Off: HVAC systrrs shall be equpped with <br />aulornabc controls capable of a000m;Aishing a reduction of energy use <br />trough control setbad a equlpmare shutdown during peddc of emu se <br />or atemate use of to apnoea saved by to system. The subnrtc controls <br />shell hew a maximum seven-day clock and be tapabb of being sal for <br />seven dill event day types per week. <br />Exceptions: <br />1. Systems serving areas Midi mWim mnirxIDus operation at to <br />Sena temperature sepont <br />2. Equpnert with full bad drnads of 2 kW (6,826 Bich) a less <br />may be caxroled by madly acossbb mead df- <br />hour controls. <br />1412.4.1 Dampers: Outside air Hates, rdvaust outlets and relief 01AIMS <br />serving conditioned specis shall be *gripped with dampers which dose <br />rtrnatcdy hewn thin system is elf or upon power failure. Stir shah and <br />elevator shaft snwioe relief openings shall be equipped withna. allyopen <br />drapers. These dampers shell ranait closed 'n on. aperatm util <br />activated by the fire alarm system or other approved smear deletion <br />system. <br />Escalations: <br />1. Systems servig rea+which require continuous tperalaon. <br />2. Combustion air Hales. <br />1412.5 Neat pump Controls Unitary air cooled hest pusrps shad Include <br />"Imop Mar ortrds that rtinnis supplemetsl Mat us" dtskg <br />stsrliP, soup, and defrost conditions. Thw torlroI that aticpste <br />nod la Mel ref use oanprssion hteatirV s tw fast staged heat. <br />Controls shall indicate when supplantmW haring is being used ttmugh <br />visual means (eat.. LED indmlas). <br />14126 Combustion Hinting Egtlpmw d Controls: Contusion h006 <br />equnp vet wlh a apscly over 225,OD0 Btuh shad have rredls tg or <br />staged canbusbon control. <br />1. Mists. <br />2 Radiant Healers. <br />1412.7 BaWncing: Each air sup ply outlet a air or water I&mirlY device <br />shall haw a means for bdencng, indudwg but net limited 10, dwrpm. <br />tenpemWm and pn ssu s Was connections and balsnckag vanes. <br />1413 Air Ec0n0n4n9ns <br />1413.1 Operation: tin ecortamt®n ahem be of automatically mcdukabg <br />outside and mixn it dupers to provide 100 percentof tta deign vVPy <br />air s outside it to. orsh, the need for mechrcef odig. <br />14132 Control: Air ecernrrvars sham be controlled by a cxxttml System <br />capable of determining t aside air can most pan or it of the building's <br />coding Inds. <br />.J� <br />1413.3 InlegrMod Opratkm: Building Hexing Energy: Air <br />aoorerat®rs Yea be apsble of pmvidrttp WW omtrV swan when <br />addniorm rnachamral hooting a mW and to meet the remainder or the <br />cooling load. Cordmh OW rot products the ecanon®r 0P@W— when <br />medencW cooling'a regied Simultaneously. <br />Fsceptlert Etorerat0n on idividud, died expansion, tndmg <br />systems with c peeiues not Per Run 75,000 Blur'h may <br />ndde centrals Vul Brit sm*alneous opwatnn ciRea <br />soononrmr end mtedva icel cooling fate purpose d Provenbng <br />toe formation on cooing cols. <br />1414 Ducting Syslenw <br />1414.1 Sealing: Duct wak which is designed 10 operds d Pr*ssueS <br />stove 12 nch water column stalk pressure steal be sealed in accordance <br />wkh Strdad RS-18. Extert of seakng nsWied a ssiolows: <br />1. Static prssu m: 12 neat to 2 inches: seal transverse jolts <br />2. Static pressure: 2 inches to 3 arches: seal all imnsverse pints <br />and longitudinal scams. <br />3. Static Possum: above 3 inches: veal dl transverse pints. <br />lagtudkal seams and duct wall petwimbOns. <br />14142 Insulation: Ducts and Plenums that am wnstnuCtd as pan Of ltw <br />buidrg wAkpe steel mW Its, mWmmenls of Chapter 13. CNmr ducts <br />and plentans uhd be thermally kndaw per Table 14-5. <br />Exceptions: <br />1. W Mn the NVAC ""ant <br />nt. <br />2. Exhaust air ducts not subled to condensation. <br />3. Exposed ductwork within a specs tho serves that spats any. <br />1415 Piping Syslams <br />1415.1 Insulation: Piping shall be thwmxey insulated in w00r dance "Mn <br />Table 146. <br />Ecoeptiom Ppng installed within urilsmy, NVAC equgmat. <br />Water Pp*s outside the conduand sPece ahem be "ddld n <br />woordatce with W shinglon state Pkxnhng Code (WAC 51-26) <br />1420 SIMPLE SYSTEMS (PACKAGED LUTARY EQUIPMENT) <br />1421 System Type: To quslhy a a sample sysemw syslena shell be ant d <br />the fobwiq: <br />a Air coded, anstant volume Pad** eWpmrtl, which PmvidO <br />heating, cooling a both, and request only rderrW <br />connection a dud work and eregy services. <br />b. Air zoomed, om trt w ma split sysWm. which Provide hea1n0. <br />cooing or bath. Mth 000kV capacity of 54,000 Bath <br />a loss. <br />C. Him" asy systems Mich taw a capacity of less than 5,00u <br />dm or which hue a naairxsn outside air supply of <br />Ins than 70 percent d the teW or circulation. <br />Al other systems shell campy with Sedans 1430 tsough 1438. <br />1422 Controls: In sddrion to is control reWnmars in S*C4an 1412. <br />hewn aWanale hWrV and aooYV equpr ant serve h Mote wmPrdua <br />zone. thermostats shall be aravlo ded to prevent sim lrraa hes*ng ref <br />cooling. <br />1423 Emgmla*rs: Emwm¢srs r^eabrn0 Ve wrluremars Of SeCbcn <br />1413 Ytd be installd on paclsged rod top fw 000lrg nits having a <br />Supply capacity d greater Vert 1.900 don or a IOW mofrV tapedy greater <br />ten 54,000 Bash. <br />The eW capacity of all sits witnvt ecerwrtizers shal not exceed <br />240,000 Barb par building. <br />1424 Separas Air Distribution Systems: Zones with Spacial process <br />temperature requirements anNa humidhy rewreme is shell be served by <br />spdse ear dstrbuion systems from those wwir g tires fsqu V only <br />corthat =4 ions. <br />7/% <br />