Moffat 350A4502P5661 owner manual Installation Instructions

Installation Instructions

WORKSHEET—CALCULATE TOTAL EQUIVALENT DUCTWORK LENGTH*

DUCT	EQUIVALENT NUMBER
PIECES	LENGTH	x USED			= TOTAL
3¼” x 10”	1 Ft.	x	(	)	=	Ft.
Rect.,
straight
7” Round,	1 Ft.	x	(	)	=	Ft.
straight
6” Round,	1 Ft.	x	(	)	=	Ft.
straight
3¼” x 10”	14 Ft.	x	(	)	=	Ft.
Rect. 90°
elbow
3¼” x 10”	8 Ft.	x	(	)	=	Ft.
Rect. 45°
elbow
3¼” x 10”	33 Ft.	x	(	)	=	Ft.
Rect. 90°
flat elbow
3¼” x 10”	24 Ft.	x	(	)	=	Ft.
Rect.	(18 ft. w/o
wall cap	damper)	x	(	)	=	Ft.
with
damper
3¼” x 10”	2 Ft.	x	(	)	=	Ft.
Rect. to
6” round
transition
3¼” x 10”	4 Ft.	x	(	)	=	Ft.
Rect. to
6” round
transition
90° elbow
6” Round,	12 Ft.	x	(	)	=	Ft.
90° elbow
6” Round,	7 Ft.	x	(	)	=	Ft.
45° elbow
	Subtotal column 1				=	Ft.

MAXIMUM DUCT LENGTH: For satisfactory air movement, the total duct length of a 3¼” x 10” rectangular, 6” or 7” diameter round duct should not exceed 65 equivalent feet.

*1 Ft = 0.3 m 1” = 2.5 cm

DUCT	EQUIVALENT		NUMBER
PIECES	LENGTH	x USED			= TOTAL
6” Round	24 Ft.	x	(	)	=	Ft.
wall cap	(18 ft. w/o	x	(	)	=	Ft.
with	damper)
damper
6” Round	33 Ft.	x	(	)	=	Ft.
roof cap
6” Round	2 Ft.	x	(	)	=	Ft.
to
3¼” x 10”
rect.
transition
6” Round	4 Ft.	x	(	)	=	Ft.
to
3¼” x 10”
rect.
transition
90° elbow
7” Round,	14 Ft.	x	(	)	=	Ft.
90° elbow
7” Round,	9 Ft.	x	(	)	=	Ft.
45° elbow
7” Round	28 Ft.	x	(	)	=	Ft.
wall cap	(21 ft. w/o
with	damper)	x	(	)	=	Ft.
damper
7” Round	39 Ft.	x	(	)	=	Ft.
roof cap
7” Round	1 Ft.	x	(	)	=	Ft.
to
3¼” x 10”
rect.
transition
7” Round	5 Ft.	x	(	)	=	Ft.
to
3¼” x 10”
rect.
transition,
90° elbow
	Subtotal column 2				=	Ft.
	Subtotal column 1				=	Ft.
	Total ductwork				=	Ft.

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