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1997 Wasl- �ton State Nonresidenlial Ener Code Com f �e Form
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<br /> 159�Wasningmn Slale Nonresitlenlial Energy CoOe Gonplianca Porms First EOM1ion-Junn,t99B
<br /> Mechanical - General Requirements
<br /> 1411.1 Goneral:Equipment shall have a minimum peAormanco at the �<t7•2 Contml: Air economizers shall be centrolled by a control sysiem
<br /> specifiM reting contlitions noi less Ihan lhe val�es shrnvn in TaGle 744 �Pahle ot determining it outside air can meet part or all ol the building's
<br /> Ihrough 14-3. cooling loads.
<br /> 1411.2 Ra[ing Condillons:Cooling equipment shall bo rated al ARI tesl ��»•����apralatl Operatlon:Building Hcaling Enorgy:Air
<br /> contlilions and procedures whan available.Where no applicable procedures �onomizers shall be capable of providing partial cooling even when
<br /> ezisl,data shall be fumished by Ihe equipment manu(acturer. addilional mechanical cooling is required to m^et Ihe remaindr of ihe
<br /> 1611.7 Com6lnatlon Spaco and Sorvica Watar HeaUn�j:Fw<ombination ��ing loatl. Conlrols shall nof precluda the economiz>•��eralion wl�en
<br /> space and servico water heaters wifh a principal function ol providing space mechanical couling is required simWtaneousty.
<br /> heat,ihe Combinetl Mnual Efficienry(CAE)may 6e calculated by using E:ceptlon: Economizers on intlividual,di:e_'t ezpansicn.
<br /> ASHRAE Standard 124-1991.Staaga water�enters used in com6ination cooling systems with wpacities not grealer than 75,000 Btufh
<br /> spnce heat antl water heat applications shall hava either an Energy FAclw may include controls thal limit simuhaneous operation ol lhe
<br /> (EF)or a CAE of not less than the following: econamizer and mechanical cooling for the puroo-sa ol
<br /> prevenling ice lorcnation on cooling coils.
<br /> EF CAE 1014 Oucting Systoms
<br /> <50 gal storage 0.58 0.77 1674.1 Seating:Duct work which is designed to operale at pressures
<br /> 5010 70 gal storaBe 0.57 0.71 above 1/2 inch water column slatic pressure shall ba seale0 in accwdance
<br /> >70 gal storage �.55 0.70 wilh Slantlard RS-1B. Erienl ol sealing requiretl is as'ollows:
<br /> 1011.4 PackageA Elnctdc Haating antl Cooling Equlpmorrt:Packaged �. Slatic pressure: 1/2 inch to 2 inches;seal tmnsversejoinls.
<br /> electric equipment providing bolh heating and cooling with a lolal cooling 2. Slatic pressure: 2 inches to 3 inches:seal a�l Vansverse joints
<br /> capacily 9realer Ihon 20,000 Btu/h shall be a heat pump. and IongiWdinal seams.
<br /> Excep[ion:UnstaNed equipment shaelters or ca6inels usetl soley 3. Stalic pressure: above 3 inches;seal all transverse jninls,
<br /> for personal wircless servke lacilities. iongitudinal seams and ducl wall penelrations.
<br /> 1412 Controls Duct tape and other pressure sensitive tape shall not 6e used as the
<br /> �412A Tamporature Conlrols:Eech system shall be provided with a:least Primary sealunt where ducts ara dovgnetl lo operate at static pressures ol
<br /> one lemperature conlrol device.Each zone shall he controlled by individual 1 inch W.C.w greater.
<br /> lhermostatic conhols respond:�9lo temperature wilhin Ihe zone. A1 a 1414.2 Insulatlon:Ducis and plenums Ihal are constructed nnd func(ion
<br /> minimum,each Ooor of a builu.ng shall bo considered as a separate zone. as parl of lhe Uuilding envelope,by suparaling inlerior space Imm exteria
<br /> 1412.2 Oeadband Controls:When used lo conlrol both comlort heating spxe,shall meet all applicable requiremenls o!Chnpter 19. These
<br /> and cooling,zone thermostatic controls shall be capable of a dead6and of requirements include insulalion installation,moisWro conlrol,air leakage,
<br /> at least 5 degrees F within which the supply ol heating antl cooling energy and builtling envelope insulation levels.Unheated equipmenl rooms with
<br /> to the zone is shut oll or redur,ed to a minimum. combustion air louvers must be isolated from lhe contlitioned space by
<br /> Ezcoptlons: insulating suAaces lo a minimum o/R-i t and any e�teria envelope
<br /> 1. Special occu an ge,or code re uirements suAaces per Chopter 73.Outside ai�duct runs ure consitleretl building
<br /> p cy,special usa q envelopo unlil Ihey,
<br /> where deaAbantl controls ore nol appropriate. a. connect lo Ihe heating or coolin9 equipment.a
<br /> 2. Buildings complying with Sec�ion 1141.4,i(in lhe pmposed b. are isolatetl Irom lhe exterior with an automatic shu4o/1 Uamper
<br /> 6uilding energy analysis,henting and cooliny ihermoslal
<br /> setpoiNs are set lo ihe same lemperature between 70 Once outside air ducls meel lhe above listed requirements.any runs
<br /> degrees F antl 75 tlegrees F inclusive,and assumed lo be w��h��contlitionetl spnce must canpy with Tobla 14-5 requirements.
<br /> conslant Ihrou9hout the year. Olher tlucts antl ptenums shall bo Ihermalty insule�ed per Tahle 14-5.
<br /> 3. Thermoslats lhat require manual changeover between Excoptions:
<br /> healing nnd cooling modes. 1. WRhin the HVAC eqwpment.
<br /> 1412.�Humidlty Controis:II e syslem is equippetl wilh a means for 2. Exhaust air ducts not subject to contlensation.
<br /> atlding moislure,a humidistat shall 6e providM. 3. Exposed duchvork within a space thal serves that spxe
<br /> 1412.4 Solback and Shut-Off:HVAC systems shnll be equipped wi�h �^�Y�
<br /> automnlic conlrols capable of accomplishing a reduclion ol energy use 1415 Plpin�Systums
<br /> Ihrough control setback or equipmenl shuttlown during periotls of non-use �q�5.1 Insulallon:Piping shall he Ihermally insula:etl in accordance with
<br /> or alternate use of tho spaces servetl by the syslem.Tho autamalic conlrois Table 14-6.
<br /> shall have a minimum seven-day clock and 6e capable of being sel for E�ecuptian:Piping installed wilhin unitary HVAC equipmenl.
<br /> seven tlillerent day rypes per week. Wota pipes outside the cunditioned spaca shall be insulated in
<br /> Ezcopllons: uccortlance with Washington Slate Plumbin9 Code(VJAC 51-26)
<br /> 1. Systems serving areas which requiro conlinuous operation at �420 SIMPLE SYSTEMS(PACKAGED UNITARY
<br /> �he same lemperature setpainL EQUIPMENT)
<br /> 2. Equipmenl with full loatl tlemands of 2 kW(6,826 BIWh)or �421 Systom Typo:To quality as a simple system,systems shall be one
<br /> less moy be conUolletl by rcadily occessi6lo manual ot6hour
<br /> controls. al Ihe lollowing:
<br /> 1472.4A Dampars:Outsido air intakes,enhausl outlets and reliel oullets 1. Air cooletl,constant volume packagetl equipment,which provide
<br /> serving condilionetl spams shall be equippetl with tlampers which close healing,cooling w both.antl require only external conne�,tion to
<br /> automatically when lha system is o/l a upon power faiNre. ducl work and ene�gy services.
<br /> Ezcepllans: 2. Aircooled,constantvolumesplit:yslems,whichprovide
<br /> 7. Syslems serving areas which require continuous operation. heating,coolin9 a both,with cool�.ng capacity of d4,000 Blu/h w
<br /> less.
<br /> 2. Combustion air intakes. 3. Heating only syslems which have a capacity af less lhan 5,000
<br /> 1412.5 Hoat Pump Conlrols:Unilary air cooletl heat pumps shall indutle ��m or which have a minimum outside air supply ol less than 70
<br /> microprocessor mNrols thol minimize supplemental hent usa90 tluring percent of Iha total air circulation.
<br /> star4up,se4up,and dehost contlilions. These controls shall anticipate �II other systems shall compty with Sections 14901hmugh 1438.
<br /> nced fo�heat antl use compression heating as the frst stage ol heat.
<br /> Controls shall indicate when supplemenlal healing is 6eing usetl ihrough 1422 Conirals:In ndtlition ro the conlrol requirements in Section 1472,
<br /> visual means(e.g.,LED indiwlors). where separale heating ond cooling equipment serve ihe same
<br /> 1412.6 Combustlon Hoaling Equipmont Canlrols:Combustion heating ��mperaWre zone,thermostals shall be inlerlecked la prevent
<br /> equipment with a capacity over 225,000 BtWh shall have modulatin9 or simWtanwus heating and coaling.Systems which pmvi0e healing antl
<br /> slaged combustion control. cooling simWlaneously lo a zane are prohiEiled.
<br /> � Exwpllons: 142J Economizers:Economizers meeting the requiremeNs of Section
<br /> 1413 shall he inslalled on single package unitary fan-cooling unils having
<br /> 1. 6oilers. a supply capacity ol greater lhan 7,9�U cfm or a total cooling capacity
<br /> 2. Ratlianl Healers. grealer than 54,000 BtWh.
<br /> 1412J Balancing:Each air supply outlet«air or water lerminal device The lotal capxity ol all units without economizers shall not exceed
<br /> shall huve a means lor balancing,including but not limited lo,tlampers, pq0,000 BtWh per bulltling,or 10%of its aggregale cooling(economizer)
<br /> lemperalure and pressure lest connections antl balancing valves. capacity,whichever is greater.
<br /> 1411 Air Economizers 1424 Soparato Air Dislri6utlon Systoms:Zones with special prxess
<br /> 1413A Operation: Air economizeis shall be of automatically modulating lemperalure requiremenls and/or humitliry requirements shall 6e served
<br /> outside antl retum air Uampers to provido 100 percent o(Iho design supply by separale air distribution systems irom those serring zones requiring
<br /> air as outsitle air to retluce or eliminate Iha need fa mechanical coolin�. only comlort condi(ions.
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