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� 2009 WASHINGTaN STATE ENERGY C(JDE Nt�TEs � w
<br /> �'AB��6_� 502.4.5 �uilding Air Leakage Tesfiing: Building envelope air leakage controf shall be cansidered acceptable when tested to have an air leakage less than W (�
<br /> RRESCRIPTiVE RE.QUtREMENTS{0,1)FQR SINGLE FAPAiLY RESIDENTIA� 0.00030 S(�BGifIC L8�k3�E AI'�� (SLA�Wh8�1 kPSt�d !N'tth � �I�J��1��C C100►'��� �I'�SS O�50 P�SC�IS (02 inch w.g.). Testing shall occur at ar�y time a€ter rough in and
<br /> GLiMATE ZONE 1 after installation of penetratiQrs o#the buiiciing envelope, including pene#rations#'ar utilities, plumbing, electrical, ventilation, and combustian appliances and � � �
<br /> sealing thereof. When r�q�;r�d by the buifding ofEicial, the test shall.be conducted in the �r�aence of department staff. The blower door test results shall be � � W
<br /> GLAZENG GLAZfNG U-FACTOR WALL WALL rec�orded on th� �pr�i�icate requirecf in Sectian 905.4,
<br /> D�OR(9) VAULTED wa��{1z> ��e t�) EXCEPTIO�i�: 1. Additions Cess than 750 s uare feet 2. Once visual ins ection has confirmed the res�r�ce af a asket see Section 502.4 , o erable windows m n- �
<br /> AREA 10 !NT(4} EXT(4) C� p � � � � p
<br /> ����Q� %4F FLOQR VERT(CAL OVERHEAD(11 U-FACTOR CEILING{Z) CEILING(3) GR��� BELOW g�(�p�,/ �LOOR(5) OR�D� ��� �nors manufactureci by smal! business shall be permitted to be sealed af#at Yhe frame prior to the test.
<br /> �Ra,QE GRADE Specific Leakage Area (SLA)shall be calculated �s foll*ad�s:
<br /> � a � � S�A = (CFIVISQ x O,Q55}!(�fi�� �i 4�)
<br /> Where:
<br /> t!* 25% 0.32 0.5Q 0.20 �38�v R-38 R-21 fNT(7) R-21 �'B R-10 R-30 2 F.� CFM50 = �lawer daor fan flow at 50 Pascal pressure difference
<br /> CFA= Conditianed Floor Area af the housing �anit �
<br /> ,�� UNLIM[TED � � - �
<br /> / / - '� During testing:
<br /> 1. Exterior windaws and ���r�, fi��place and stove doors shall be closed, but not seai�d. �, �a��pers shall be closed, but not seafed; irrcluding exhaust, intake,
<br /> �REt=ERENCE CASE makeup air, back dra#�, �nd flue dampers; 3. Interior doors cannecting conditioned spaces shaii �� op�:n; access hatches to conditianed crawl spaces and � N
<br /> 0. Nc}minal R-values are forwood frame assemblies only or assemblies built in accordanc�with Sectian 601,9. conditioned att�rs shafl be open; doors cannecting to unconditioned spaces shall be cfased but no# sealec�; 4. Exterior openings for continuaus aperation o
<br /> 1. Minimum requirements for each aption listed. Far sxample, if a propased design has a glazing ratio to tY�e candi#ioned€faor area of 13%, it ventilatinn systems and heat recovery ventilators shall be c(osed and sealed; 5. Hea#ing and cooling system(s} sha(I be turr�ed off; 6. HVAC ducts supply and � �
<br /> shall comply with all of#he requirements a#the 15% glazing option (or higher). Proposed designs which cannot meet the specific redurn r�gisters shall not be sealed. �
<br /> requirements caf a listed option above may calculate ccampliance by Ck�apt�rs 4 ar 5 of this Code. e� �
<br /> 2. RE�quirement applies to all ceilings except single rafter ar joist vaulted ceilings cQmplying with nate 3. 'Aclv' denotes Advanced �ramed 105.4 Certificate:A perm�r���t c�rtificate shall be pasted within three feet of the electrical dis�ri�utican panel. The certificate shall be campleted by the builder or �
<br /> Ceilii�g. registered design pr�fessional. The certificate shall list the predominant R-values o€ insulation installed �n or on ceilfig/roaf, walls, foundation (slab, basement � Ci
<br /> 3. F2E;quirement applicable anly ta single rafker or joist vaulted ceilings, wall, crawlspace wall andJ�r flac�r), and ducts outside the canditioned spaces; U-factors for fenestration; and the solar heat gain caefficient (SHGC) of �
<br /> 4. BE:low grade walls shall be insufated eifiher un #he exterior to a minimum {evel of R-10 continuous, or on the interior as a framed wall. fenestration. Where there is more than one value far each component, the certificate shall list the value covering the largest area. The certifica#e sha41 list the � �
<br /> Exterior insulatian installed on below grade walls shall be a water resistant mat�rial, manufactured for its ir�tended use, and installed type and efficiency of heatir�g, coalirg, and service w�ter heatirtg equipm�nt, duct le�k��� r�t�s including test conditions as specified in Section 503.10.2, anc� Q �
<br /> accarding ta the manufacturer's specifications. See Section fi02.2. air leakage results if a blower d�car te�t was eonducted.
<br /> 5. Flaars over crawl spaces or expased to ambient air canditions. �
<br /> 6. Re.quired slab perimeter insulation shall be a water resistant material, manufactured for its intended use, and installed according to ADVANCE� FRAMED C�ILING; Advanced€raming ass�mes full antf even depth of insulatian ext�nding tt� th� ou#side edge af exterior walls.
<br /> maniafacturer's specifications. See Sectian 602.4. For slabs inside a faundation wall, the insulation shall be instalfed ta pravide a thermal �
<br /> break (TB) between ihe s(ab edge and the faundation. Monalithic slabs shall include insulatian, installed outside the foundation wall, and shall �
<br /> extend downwar�from the top of the slab for a minimum distance af 24 inches or downward and then horizontally far a minimum combined Q,,
<br /> distance of 24 inches. Monolithic slabs shall also include R-10 insulation under the non-load-bearing portions af the slab. �
<br /> 7. Inf;. denotes standard framing 16 inches on center with headers insulated with a minimurrr of R-10 insulation. �
<br /> 8. R��served.
<br /> 9. �oars, including all fire doors, shaCl be assigned defiault U-factars fram Table 10-6C. �
<br /> 10. UVhere a maximum glazing area is listed, the total glazing area (combined vertical plus overhead} as a percent of gross conditioned filoor 2OQ9 SECT�U�I M�I 'rJO� - uv �"���..� �"'���..��� vENT��-1�T�vN
<br /> area shall be less than ar equal to that value. Overhead glazing with U-factor of U=0.35 or less is not included in glazing area limitations.
<br /> 11. Uverhead glazing shall have U-#actors determined in accorciance with NFRC 100 or as speci€ied in Section 502,'i.5. M1508.4 Intermittent Whole House Ventilatian Using �xhaust�'ans. This section estabfishes minimum prescripi:ve requirements far intermitkent whole house ventilation sys#ems using �
<br /> 12. Lc�g and solid timber walls with a minimum average thickness of 3.5° are exempt from thiS insul�tion requirem8nt. exhaust fans.A system which meets al3 th�requirements of this seckion shal!be deemed to satisfy the re�tair€;rner�t�for a whofe hause ventilation system. � r-
<br /> NUTES PER 204g WSEC � �
<br /> . Q N
<br /> �
<br /> 50'2.4.3 Seafs and Weatherstripping: M1508.4.1 Whole Hause Ventilation Fans. �xhaust fans providing whole house venti(ation shal[have a flow rating at Q25 inches v,rater gauge as specified in Table M1503.2.Manufacturers` N (�
<br /> a. ?�xterior joints araund windows and door frames,apenings beiween wa[(s and foundation, beiween wafls and roaf and wali panefs; openings at penetrations fan f(ow ratings shaEE be determined according to HV! 916(Apri! 1995)or AMCA 210, � �,
<br /> of�atility services through walls,floars and roafs;and a[i other apenings in the buiiding envelape and al1 other op�nings in between units shai[be sealed, �
<br /> ca�alked,
<br /> gasketed or weatherstripped to Eimit air leakage.Other e�cteriar joints and seams shali be similarly treated, ar taped, or cavered with mois#ure vapor N �
<br /> pe�meab(e housewrap. M1508.4.2 Fan Noise.Whole house f���located 4 feet or less from the interior grilfe shall have a sane rating of�.�or less measured at 0.1 inches water ga�ge. Manufacturer's noise ratings z a
<br /> shal! be determined as per HV4 915(C7ctober 1995). Remotely mounted fans shall be aeoustically isofated fram the struciuraf elements of the buifding and from attached duct work using � W
<br /> ' 50,2.1.6.1 Vapor Retarders: Vapor retarders shaR be insta(ied or€tf�e warm side(in winter)ofi insu(ation as specifred in the folEowing cases. insukated flexibCe duct or otherapproved materiaL �
<br /> EXCEPTION: Vapor retarder installed with nat more than 1/3 of the nominal R-value between it and the conditianed space. � �
<br /> M1508.4.3 Fan Contrpls. The whole housa�e�til�tion fan shall be controlled b a 24-haur clack firrs�r�t� th�cap�bility of continuous operation, mamaa!and automatic cantrok.The 24-hour � Ll..�
<br /> 50�.1.6.2 FEaors:Floars separating conditioned space from unconditioned space shalf have a vapor reta�rder ins#a[led.The vapar retarder shall have a ane Y �
<br /> pei-m dry cup rating or[ess (i.e.faur miI[O,QQ4 inch thick] polyethy[ene or kraft faced makeriafj. timer shaff be readiEy accessib(e.The 24�i�c�ur iimer shalf be capab(e of operating the whole house ventila#ion fan z�+i#hout energizing other energy-consuming app{iances. At the.time of finai �
<br /> inspection,the automatic control timer shal[be set ta operate the whole house fan for at least 8 haurs a day.A label shall be a#fixed#a the contral that reads"Whofe House VentiEation (see � W
<br /> 502.1.6.3 Roof/Cei(ings: Raof/ceiling assemblies where the ventilation space above the insulation is less than an average af 12 inches shal!be provided with operating instructions).° � �
<br /> a vapor retarder. Faced batt insuEation where used as a vapor retarder shai!be face stapled. Singfe rafter joist vau{ted ceiling cavities shai!be of sufficient Q <(
<br /> defath to allow a minimum one inch vented air space a�ove the insukation. Q
<br /> M1508.4.4 Exhaust Ducts.Aff exhaust ducts s�aall terminate autside the building. �chaust ducts shal(pe equipped with back-draft dampers.All exhaust ducts in unconditioned spaces shakl be
<br /> 50:2.1.6.4: Vapor retarders sha(I not be required in rooftceiling assemblies where khe ventilation space above the insuiation averages 12 inches ar greater. insu{a#ed to a minimum of R-4.
<br /> 50;?.1.6.5: Vapor retarders shail not be required whera all of the insulation is installed be�ween the roof inembrane and the structural raofi deck.
<br /> M1508.4.5 Outdoor Air Inlets. Outdoor air shal[be disfributed to each habitable ro�m by individua€auf�oor air iniets.Where outdoor air supplies are separa#ed from exhaust points by doors,
<br /> 50`,?.1.6.6 Waffs:Walls separating conditioned space from unc�ndifioned spaee shalE have a vapor retarder installed. Faced batt insulation shal(be face peovisians shalE be made ta ensure air flow by installation of distributian ducts, undercuttfng doors, insfaiiatsor7 of griEfes,transoms, or similar means. Doars shalf be undercut to a minimum of
<br /> stapfed.
<br /> 1l2 inch above the surface caf fhe finish fCoor cave€ing.
<br /> 50:�.1.6.7 Ground Caver:A ground cover of six mil(Q.006 inch thick) biack polysthylene ar approved equai shall be iaid over the ground within crawf spaces. lndividua! room oufdoor air inlets shall: �
<br /> The ground cover shaB be averlapped 12 inches minimum at the joints and shall extend ta the fioundatian waf(. 1. Have controllabfe and secure openings, 2. Be sleeved or otherwise designed so as not ta compromise the thermal properties of the wall or window in which khey are placed; 3. Provide �
<br /> EXGEPTION: The ground cover may be omitted in craw(spaces if the crawf space has a conerete slab fEoar with a minimum thickness ofi 3-112 inches. not fess than 4 square inches of net#ree area of opening for each habitable space.Any inlet or combination of inlets which provide 10 cfm at 10 Pascafs as defermined by the Home
<br /> Ventilating Institute Air Flow Test Standard (HVi 941 November 1996}are deemed eyuivalent to 4 square inches net frse area. �
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<br /> 50:5.1 Interior Lighfing:A mir�imum of 5D percent of�II IuminaiCes sh�l{ be high ��fie�cy luminaires. 1n�e#s s�ral4 be screened oe ofihervvise pro�e�t�d from e�try by feaves or other materiaf. �utdoor air inlsfs shall be►acafed so as not to take air from the foNowing areas:
<br /> 1. Claser tf�an 10 fieet from an appliance ve�t outlet, unless such vent outlet is�3 feet ab�ve the outdoor air inlet.2,Vtlhere it wilE pick up objectionable odors,fumes or flammabfe vapots. 3. �
<br /> 50;3.8.1 Temperature CQr�#ro(: The primary space conditioning system within each dwelling unit shalf be prr�vided with at least an� A hazardous or unsanitary locatian.4,A raorn or space having any fuel-b�rning appfiances therein.5. C(oser than 14 feet from a vent apenin�of a plumbing drainage�ystem unfess the vent � �'
<br /> programmable thermostat for the regulation of kemperature. The thermostat shall allow far, at a minimum, a 5-2 programmable schedule apening is at least 3 feet above the air inlet. 6.Attic, crawl spaces, or garages. � �
<br /> (we;ekdays/weekends) and be capable of providing at least twa programmable setback periads per day.
<br /> M95Q$.5lntermittent Whole Hause VentifatiQn Integrated With a Forced-Air System.This section establishes minimum prescriptive requirements for intermittent whole house ventilatron W �
<br /> 50:3.10.1 Installation of duCts in exterior w�lls, floars or ceilings shall not displ�ce required envelop� insulation. Building cavities may nat be systems integrated with forced-air ventilatian systems.A vys#em which meets all the requirements o#this section shall be deemed to satisfy the requirements far a whoie house ventilation � y.,i
<br /> us��d as ducts. system. �f';"
<br /> 50:3.10.2 Leaka e Testin Ducts shall be (eak tested in �ccordance with RS-33, usin the maximum duc# leak� e rates s eCified in Section M15d8.6.1 int rated Whole Mause VentiCatian S stems.Inte rated whake house venti[ation s stems shalf provide outdoar air at the rate calculated using Section M1508,3. lntegrated far�ed- � �
<br /> 9 9� 9 9 P �9 Y 9 Y I � 1 �
<br /> �p;;,�p,3, air venti(ation systems shall distribute outdoor air to each habi#abfe roorr�through the forced-air system ducts. Integrated fprced-air ventilation systems shaff have an outdoor air inlet duct LL.�
<br /> connecting a terminal element on the outside of the bui(ding to the return air pienum of the forced-air system, at a point within 4 fes#upstream of the air handier.The outdoar air'rniet du�t e„J
<br /> 503.10,3 Sealing: All ducts, air handfers, filtef boXes, and building cavities used as ducts shall be sealed. Jaints and seams shall camply with connection to the return air stream shal[b�[oc�ted upstream of tkae fiorced-air system blower and shall nqt be canneeted direct4y into a furnace cabinet to prevent thermal shock to the heat �
<br /> Se��tion M1601.� of the Intemational Residential Code or Section 603.9 0€the International Mech�nical Code. �uct tightn�ss testing shall be exchanger. The sysfem wi[I be equipped with a motorized damper connected to the automaGc ventilation contraf as specified in Section M15Q8.5.2.T4�e required flow rate shall be verified by �. �
<br /> cor�ducteci to verify that the ducts are seafed. A signed affidavit documenting the test results shall be prouided to the jurisdictiQn having fre�d testing with a#faw haod or a flaw measur�ng statian, �
<br /> authority by the testing agent. When required by the building offieial, ths test shall be conducted in the presence o#department staff. Duct Q ,
<br /> tightness shall be verified by either of the fol(owing: M1508.5.2 Ventilation Gontrols.The whole house ventii��i�n system shafl be controkled by a 24-hour efoek#imee with the capability of continuaus operatian, manuaE and automatic contral.
<br /> 1. F'ost-constructi0n test: Le�kage to outdo0rs Shall be IeSS than or equal to 6 cfm per 100 Squ�rB feet of Conditic3rled flo0r area Or� tot�l This cantro(wifl control the forced air system blower and the autc�matic damper.The 24-haur timer shal[be readil�accessible. The 24hour timer shai(be capabfe of apera#ing the wha(e
<br /> leakage less than or equal to 8 cfm per 100 square feet af conditianed floor area when tested at a pressure differential of 0.1 inches w.g. (25 hause ventiiation system without energizing other energy-eonsuming appfiances. At the time of final inspectfon,the automatic control timer shall be set ta operate the whoEe hause system for �
<br /> Pa>cals)across the entire system, including the manufacturer's air handler enclosure. All register boots shall be taped or otherwise sealed at least s hours a day.A fabel shal►be affixed to the controG that reads"Who[e House Ventila#ion(see opera#ing instructions)."
<br /> during the test.
<br /> 2. F�ough-in test; Tota( leakage shall be less than or equal to 6 cfm per 100 sc�uare feet of conditioned floor area when tested at a pressure M1508.5.3 Ventiiation Duct lnsulation,All supply ducfs in the conditioned space shalf be insulated to a minimum of R-4.
<br /> diff��rential of 0.1 inches w.g. (25 Pascals} across the raughed-in system, including the manufacturer's air handler enclasure. All register boots
<br /> Shall be tap�d ar atherwi�e sealed during the test. If the air handler is nat install�c! at the time of ths#est, tatal leakage shall be less than or M1508.6.4 C�utdoor Air InEets. Inlets shai{be screenad or otherwise protected from entry by keaves or ofher materiaL Outdoor air in(ets shalf be locat�d sa as nat to take air from the fo(fawing
<br /> eqt�a! ta 4 c#m per 10Q square feet of conditioned ffoor area. areas:
<br /> ' 1. C[oser than 9 Q feet from an appfiance vent outlet, unless such vent outlet is 3 feet above the outdoor air in[e#.2.Where it will pick up objectionabfe odors,fumes or ffammable vapors: 3.
<br /> A hazaedaus or unsanitary loeafion.4.A room or space having any fuel-burning appliances therein. 5. Closer than 10 feet from a vent opening of a plumbing drainage system unless the vent
<br /> opening is at east 3 feet above the air inlet. 6,Attic,craw(spaees,ar garages. ���� �� ��+/�����
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