GE JP386, JP385, JP387, JP384, JP383, JP388 15fi, 18fi, 16fi, 12 fi, 13 fi. x =

TULE 1

Calculate Total Equtialent DutioA Len@h

Duct Pieces				EquNdent Number						Equivalent
				Length*x		Used			=	Length
			5“ round,	2.7	X		(	fi.)t=
										ft
D;r:::d					x		(	fi.)t=
			straight ‘	1						ft
			3%” x 10”	1
			straight		x		(	fi.)t=		ft
			5“, 90°	37ti.	x		(	)	=	ft
			elbow
	@ 6“, 90°			15fi.	x		(	)	=	ft
			elbow
			5“, 45°	18fi.	X		(
			elbow						)=	R
@			6“, 45°	9fi.	x		(	)	=	ft.
			elbow
			Flexible
			Metal Offset	See Calculations
		Adapter		in Step 5A						ft.
		3%” x 10”		16fi.
		90° elbow			X		(	)	=	ft.
		3%” x 10”		5fi.	x		(	)	=	ft.
		45° elbow
		3%” x 10“		18	H. X		(	)	=	fi.
@ 90° flat elbow
		5“ round
		to 3%” x 10”		3 h.	x	(			)=	ft.
		transition
		6“ round
% to 3%” x 10”				7R. x ( ) =
		transtion								ft.
				Subtotal Column 1 =						ft.

*Equivalent lengths of duct pieces are based on actual tests and reflect requirements for good ven~ performance with any downdraft cooktop.

~Measure and fist feet of straight duct used. Count and fist the quantity of W other duct pieces for the ‘Number Used” of each type.

lMmmMT

For mfium efficiency, use the shortest and straightest duct run possible, with as few fitigs as possible. For satisfactory performance, tie duct run shotid not exceed 100 feet *tient length.

Venting performance is improved by using larger diameter duct

Duct Pieces			Equivalent Number							Equivalent
			Length*x			Used			=	Length
		5“ round
		to 3%” x 10”
		transition	37fi.
		90° elbow			x		(	)	=	ft.
		6“ round
Q to 3%” x 10”
		transition	2ofi.
		90° elbow			x	(			)=	fi
		3%” x 10”
%		to 6“ round	5fi.
		transition			x		(	)	=	ft.
		3%” x 10”
		to 6“ round
%		transition	12 fi. x (						)=	fi
		90° elbow
		Tapered
		5“ round
@ to 6“ round			6	fi.
	transition					X	(	)	=	ft.
		5“ round collar
&	to 6“ round		13 fi. x ( ) =							ft.
		cap transition
	5“ round
	wall cap		84	fi.
	wtih damper					X	(	) =		ft.
@	6“ round
	wall cap		21		R.
	with damper					x	(	)	=	ft.
	3%” x 10”
	wall cap
= with damper			27		H.	X	(	)	=	ft.
	6“ round,		20
	roof cap				x	(		)	=	ft.
	6“ round,		24
	roof vent				X	(			)=	H
			Subtotal Column 2 =							n.
			Subtotal Column 1 =							n.
			TOTAL DUCWORK=							ft.
					Should not exceed 100 feet.

Hflexible meti ducting is used; d the equivalent feet values in the table should be doubled. me flexible meti duct shotid be straight and smooth and extended as much as possible.

DO N~ use fl~ble plastic du~g.

Vent initiation should not exceed 100 feet equivalent length.

Blower is rated at 400 Cm at 0.1 inch of water back pressure.

(cmtinued ndpwe)

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