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<br /> , , � Additionai Energy Effic�ency Requirements
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<br /> i _ �er Table R406.2 of the Washington State Energy Code,each dweflin�unit in a residential buiidi�g must achieve the following
<br /> � ' �/�101@-HOUSe Vetl$II�faOtl minimum number of credits. ,�
<br /> ' Seler.t one of the following methods. � ' �
<br /> �� , Type�Description Credits Required
<br /> ' ��. A. Fresh air will be circu(ated by the centrai forced air furnace.The furnac,e must hlave afresh air intake duct and the blower Small Dwe[ling Unit . 2.5 credits
<br /> � ' " � irner to circulate air a totai of 8 hoursdail .
<br /> t'vated b a t
<br /> ust be ac i
<br /> m Y
<br /> re f t of
<br /> Y 300 s �a ee
<br /> , e Dwelling uriits less than 1500 square feet in condrtioned f�nor area w�th less than q
<br /> ❑ B. Fresh air wii( be supplied by wall or window vent por�s in each bedroom, kitchen,living room and other habitable rooms fenestration area.
<br /> along with a whole-house exhaust fan.The exhaust fan,which usually does double duty as a Eaundry or bathroom fan, and must • Additions to existing buiiding more than 500 square feet of heated fioor area but less than 2500 square feet.
<br /> be controlled
<br /> b a timer set to o erate accordin to the fan sizes and time schedu�es below.7he tabie below assumes a 3.5 cre its
<br /> i g
<br /> Y P
<br /> Mediurn Dwelfin Unit
<br /> � �
<br /> g
<br /> i _ or ess. .
<br /> r feet i
<br /> 00 ua e
<br /> i resic{ence of 30 sq I units with more than 1500 s ft and less than 5000 s ft of conditioned floor area
<br /> � Uwel in q q
<br /> ' . .. .. . . . . . .
<br /> �
<br /> ' Continuous O eration 12 Hours Da : � • Additions to existing building with 1500 square feeT or more of heated floor area.
<br /> �
<br /> P .
<br /> � Y
<br /> , �. ' ... . . ..... . : ...
<br /> i ` 1 bedroam : 45 cfm 90 cfm Exception: Dwe(ling units serving R-2 occupancies require 2.5 credits.
<br /> 2-3 bedrooms � 60 cfm : 120 cfm I� 'Large Dwelling Unit ^ ^� � 4.5 credits
<br /> 4-5 bedrooms 75 cfm 150 cfm ' • Dwe((ing units with 5000 square feet or more of conditioned fioor area,
<br /> , . ,
<br /> Exception: Dwe(ling units serving R-"L occupancies require 2.5 credits.
<br /> • ❑ C.A heat-recovery ventilation system with minimum CFM flow rates as shown in option B. � � � �` 0.5 credits �I '
<br /> Additions af 500 s uare feet or(ess
<br /> .
<br /> q
<br /> 9
<br /> , .,
<br /> , _— —_____ _
<br /> Source-Specific Exhaust Ventilation & Fan Efficiency
<br /> �� The foNowing options are commonfy chosen to achieve the required number of credits. See section R406 for complete list of
<br /> i s n other rooms where
<br /> Required in each kitchen, bathroom,water closet compartment, laundry room, indoorllswimm ng�ool, pa a d
<br /> ' ,;:'
<br /> � o tions. . _
<br /> r �
<br /> � �
<br /> � r m NI�C�2-11R 'Table R403.6.1.
<br /> n ' i c fo
<br /> 7.4 Fa effic en
<br /> t r va or or cookin odor is roduced. IRC M-�50 , „,.
<br /> wa e g p � ) Y ,
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<br /> I . � �. , . � . . . � � � i ' �
<br /> '� � • Option 3a (1.0 Credits)-A gas, propane or oil-fired furnace with a minAFUE of 94%. .
<br /> �� .
<br /> . . . Minimum Source-Specific Ventilation Capacity Requirements • O tion 3 1.0 Cre its -Duct ess Sp it System f leat Pump ocate in t e main zone o t e addition. �
<br /> , f.:
<br /> �i . . .. . � � . � . . . � _ c r r � -
<br /> Iln line fan GPM or ess a
<br /> n a new avato
<br /> rooms-Utilit Rooms Kitchens . � kit hen sink aucets rated at 1,75 y
<br /> Bath n w s owerhea ar c
<br /> 'o � 0.� Cr dits -All e
<br /> �
<br /> Y D
<br /> . Otin a e
<br /> p �
<br /> , (nterrnittently operating 50 cfm � 100 cfm �^ faucets rated
<br /> -- -- o.�a.
<br /> . - EF of
<br /> an or ir d water heater with a min
<br /> io 5b .0 Credit -A as ro e oil f e .
<br /> . Q t n 1 s
<br /> Z fm
<br /> P
<br /> � ) €� , P P
<br /> i 20
<br /> cfm 5 c
<br /> Cont
<br /> inuous o erat on
<br /> P I
<br /> _ - --- — � �
<br /> . - w' h � min Ef of 0.9�.
<br /> r i a
<br /> +r t r heate t
<br /> 'o c 1.� d' -A as ro ane or oil fired ra e
<br /> ' f �ir Flow Rate Minimum(cfm� 10 90 Any 'F1ny I O p t t n 5 ( C r e rt s) g , p p
<br /> � Minimum Efficacy(cfm/watt} 1.4 cfm/watt 2.8 cfm/watt 2.8 cfm/watt '2.8 cfrr�/watt The dra�Nings included with the building permit application shall identify which options have been selected and the point value of �
<br /> . Air�low Raee Max�rnum(cfm) > o Any Any Any �� each o�tion, regardless of whether separate mechanical;plumbing, electrica(, or other permits are utiiized for the project. •
<br /> ,
<br /> I � � Other Code Re uirements
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<br /> ' . Section 502.4.5 of the Ener Code re uires that the buildin envelo e be tested (normally referred to as a b(ower door test }to
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<br /> Insulation and Windows . .
<br /> i Prescriptive energy code compliance for Climate Zone Marine 4: determine that air leakage is within acceptable levels.�1 feakage of.00030 SLA measured at 50 pascals is considered acceptab(e. ,
<br /> . . . . . . � P . . .
<br /> � ar' t tin .
<br /> o w dt in _s ,
<br /> f oors windows ducts or re isters is n t allo ed .
<br /> SeaCin o d ,
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<br /> , . � , �
<br /> I, ? � Fenestration 1 Ceiling Vaulted Wood Framed Mass Wall Belovi-Grade Frarned Slab R-Value ,
<br /> � ��� � � � �
<br /> � � �� � � � � � � � w/Attic ceiling wall(Int.)� ��(Above grade) wall�� Floar �&Depth Section 503.10.2 requires leakage testing of the mechanical ducts to insure that the ducts are sealed.Testing may occur at rough-in ,
<br /> , component vertical overhead ' I roved or certi�ed E7 the � �'
<br /> or ost-construction.Testin must comply with standard RS-33. lndividuals performing the test must be app y
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<br /> ' Prescriptive U.q.30 U.OSO R-a9 R-38 R-21 min. IR-21 min! R-10/15/21 R-30 a-10 min. Washington State University Energy Office or approved ather agency. ,
<br /> Value max. max. min. min. Int.+TB min. 2'depth
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<br /> 'res li hts and la n s e
<br /> i 75 of all lu inat
<br /> � f ° Section 505.7. requ res that /o m ( g p ) g Y
<br /> � 1..Fenestrationisdefinedasskylights,roofwindows,verticalwindows(fixedormoveable),opaqueldoors,glazleddoors,glazedblockandcombination opaque/glazed SeCti011�.QS.4 re uires that a certificate be osted within three feet of the electrical panel,completed by the builder or design .
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<br /> doors.Fenestration includes products with glass and non-glassglazing materials. �
<br /> � 2.Int.(intermediateframing)denotesstandardframingl6"o.c.withheadersinsulatedwithaminimumR-10insulation. prUfeSSlOtlal,and include the following information. R-values for ceiling, wafls,floors,foundation, U-factor5 for windows,the type
<br /> � s."10/15/21+TB'�means R-10 continuous insulation on the exterior of the wall,or R-15 on the continuous il su�ation on the interior of the wall,or rt-zz cav�ty and efficiency of heating/cooling equipment, duct leal<age rates from the duct testing,and the air leakage rates from the blower
<br /> � . .
<br /> , ' i uance.
<br /> i fo our use at time of ermit ss
<br /> , r estin .A certificate will be rov ded r
<br /> i ! • ' II."1U/15/21+TB"shaU be permitted to be met rnth R-13 doo t � �7 y P
<br /> msulation plus a thermal break between the slab and the basement+vall at the intenor of the b�isement wa
<br /> � cavity insulation on the interior of the basement wall�lus R-S continuous insulation on the interior or exte�i�r of the wan.��ra°means tfzermal break between floor f
<br /> i , ' sla6 and basement walL -
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