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<br /> , M1507.3.2 Control and o eration. .
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<br /> 1.,Location of controls. Controls for all ventilation s stems shall be readil accessible b the occu ant. v, •
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<br /> 2. Instructions. O eratin instructions for whole-house ventilation s stems shall be rovided to the occu ant b the installer of the s stem. : '
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<br /> 3. Local exhaust s stems: Local exhaust s stems shall be controlled b manual switches dehumidistats timers or other a roved means.
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<br /> 4. Continuous whole-house ventilation systems. Cont�nuous whole-house ventilation systems shall operate continuously and be equ�pped w�th
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<br /> A fan on switch shall be perm�tted as an override control. Controls shall be capable of operating the vent�lation system without energizmg BE�R��M 4
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<br /> other energy-consuming appliances.
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<br /> , A clearl v�sible label shall be affixed to the controls that reads Whole House Ventilation {see operating instructions).
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<br /> _ 5. Intermittent whole house yentilation systems. Intermittent whole house ventilat�on systems shall comply�nnth the followmg. WAL� N�A1�p
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<br /> 5.1.They shall be capable of operating mterm�ttently and continuously.
<br /> II n r I r in a forc - ir ste f ns or I fans wi o t ener izin o h r
<br /> 5.2. They sha have co t o s capable of ope at g the exhaust f ns, ed a sy m a , supp y th u g g t e �
<br /> ener -consumin a liances. _ :
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<br /> 5.3. The ventilation rate shall be ad'usted accordin to the exce tion in Section 403.8.5.1. - _ � : _ '
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<br /> 5.4. The s stem shall be desi ned so that it can o erate automaticall based on the e of control timer installed. ,
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<br /> 5.5. The intermittent mechanical ventilation s stem shall o erate atleast one hour out of ever four. . ?
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<br /> 5.6. The system shall haVe a manual control and automatic con#rol, such as a 24 hour clack timer. G�CI
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<br /> 5.7. At the time of fmal inspect�on,the automatic control shall be set to operate the whole-house fan according to the schedule used to B E[�R��M 'rj
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<br /> calculate the whole-house fan siz�ng. � ,
<br /> ' 5.8. A label shall be affixed to the control that reads "Whole House Ventilation see o eratin instructions ."
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<br /> M1507.3.2.1 O eratin instructions. Installers shall rovide the manufacturer's installation o eratin instructions and a whole-house :
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<br /> �, ventilation system operation description. -
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<br /> M1507.3.3 Mechanical ventilation rate. The whole-house mechamcal ventilat�on s stem shall rovide outdoor air to each dwellin unit at a ;, �
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<br /> continuous rate of not less than that determined in accordance with Table M1507.3.3 1). :
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<br /> EXCEPTION: : _
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<br /> The whole house mechamcal ventilation system �s permitted to operate intermittently where the system has controls that enable operation for {�r- , ,
<br /> not less than 25 ercent of each 4-hour se ment and the ventilation rate rescribed in Table M1507.3.3(1) is multi lied b the factor determined I o 0 0
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<br /> in accordance with Table M1507.3.3(2). �- - - -- - - - = - - - -- -
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<br /> Table M1507.3.3(1) �
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<br /> Cont�nuous whole house Mechamcal ventilation system airflow rate requ�rements � �
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<br /> NUMBER OF BEDROOMS
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<br /> � i BATH 2
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<br /> WAL� N�A1�� � _ : ` �
<br /> DwellingUnit 0-1 2-3 4-5 6-7 >7 : I � v
<br /> ; Floor Area _
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<br /> + (Square feet) ' ' � T
<br /> A�rflow in CFM � � l `
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<br /> <1500 30 45 60 75 90 I _ O
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<br /> 1,501-3000 45 60 75 90 C p n/�
<br /> 105 � p � Ct�C� � _
<br /> 3,001-4,500 60 75 90 105 120 L7CDROOIVI �
<br /> � �xisriNG Hor/ � � s . . —
<br /> 4,501-6,000 . 75 90 105 ,120 135 8�C�1� � �
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<br /> 6,001 -7,500 90 105 120 135 150 5 5 _ � � _
<br /> >7 01 105 2 16 _
<br /> _ _ �5 . 1 0 135 150 5 5 m
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<br /> For SI.1 square foot—0.0929 m2,1 cubic foot per mmute-0.0004779 m3/s. I
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<br /> Tabie nn�so�.3.s 2 ` BEDROOM 2 BATH 1 � -- --. --- - —
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<br /> Intermittent whole -house Mechanical vent�lation s stem rates Factorsa�b KITC H E N wi H
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<br /> Run-time Percentage in 0 0 _ �
<br /> 25% 33% 50% 66/o . .75% o �
<br /> Each 4Hours Se ment 100/o U
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<br /> Factor a 4 3 . 2 .1.5 1.3 1.0 I � �
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<br /> a, for ventilation system run time values between those given.the factors are permitted to be determined by interpolafion. . � _ C )
<br /> b. extrapolation beyond the table is prohibited. � V.
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<br /> M1507.3.4 Whole house vent�lation usmg exhaust fans. This section establishes minimum prescriptive requ�rements for whole house
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<br /> ventilation systems usmg exhaust fans:A system wh ch meets a t equ e ts s t o d e ed to sat s y t e eq ts
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<br /> for a whole-house ventilation s stem. , 120V-(SANIp�I�/2.WG
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<br /> M1507.3.4.1 Whole-house ventilation fans. Exhaust fans providing whole-house ventilation shall have a flow rating at 0.25 inches water gauge
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<br /> as spec�fied in 7able M1507.3.3(1 j.Manufacturers fan flow ratings shall be determmed according to HVI 916 or AMCA 210.
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<br /> M1507.3.4.2 Fan noise.Whole-house fans located 4 feet or less from the interior grille shall have a sone rating of 1 A or less measured at 0.1 _ �-
<br /> inches water au e. Manufacturer's noise ratin s shall be determined as er HVI 915 March 2009 . Remotel mounted fans shall be
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<br /> acoustically isolated from the structural elements of the building and from attached duct work using insulated flexible duct or other approved
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<br /> M1507.3.4.3 Fan controls. The whole-house ventilat�on fan shall meet the requirements of Section M1507.3.2 and M1507.3.2.1.
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<br /> M1507.3.4.4 Ventilation openings. Each habitable space shall be provided with outdoor air inlets or operable windows with an openable area not �
<br /> f ' f 10 cfm f outd or air r uired b Table M1507.3.3 1 . Where utdoor air su li s :
<br /> less than 4 square �nches of net free area o opening or each o o eq y O o pp e �
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<br /> are separated from exhaust pomts by doors, provisions shall be made to ensu e a r fl w by sta t o d st ibu o d cts, und c �ng
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<br /> doors, installation of grilles, transoms, or similar means. Doors shatl be undercut to a minimum of 1/2 inch above the surface of the finish floor •
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<br /> Indiv�dual room outdoor air �nlets shall. �
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<br /> 1. Have controllable and secure opernngs, _ SL.
<br /> 2. Be sleeved or otherwise desi ned so as not to cam romise the thermal ro erties of the wall or window in which the are laced; � 11�
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<br /> rt 3. An inlet or combination of inlets which rovide 10 cfm at 10 Pascals are deemed e uivalent to 4 s uare inches net free area. - �
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<br /> Ventilation openin shall be screened or otherwise protected from entry by leaves or other material. Openings shalf be controllable, securable � �
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<br /> ' . and shall be desi ned to not com romise the thermal ro erties of the buildin envelo e.Ventilation o enin s shall be located so as not to ,
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<br /> take air from the following areas: , L�U�N V R��M �
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<br /> 1. Closer than 10 feet#rom an appliance vent outlet, unless such vent outlet�s 3 feet above the outdoor air inlet. �
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<br /> 2. Where it will pick up ob�ect onable odo s, fumes o f am a e p . p �-
<br /> 3.A hazardous or unsanitar location. _ _ : B E�I���M � � �:
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<br /> _ 4. A room or s ace havin an fuel-burnin a liances therein. � �
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<br /> 5. Closer than 10 feet from a vent o enin of a lumbin :draina e s stem unless the vent o enin is at least 3 feet above the air inlet. - � , •
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<br /> 6.Attic, crawl spaces, or garages. : � '
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<br /> 7.As halt roofs unless it is shown that no other location is ermissible. In such cases the inlet o enin shall be located a minimum of 2 feet - � — � '
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<br /> from the nearest surface of the asphalt roofing, measured from the mtake opening.
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