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W415-0834 / D / 09.07.12
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BACK WALL OF CHASE /
ENCLOSURE (INCLUDING ANY
FINISHING MATERIAL)
INSIDE
CHASE
OUTSIDE
CHASE
* When constructing the enclosure allow for
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nishing material thickness to maintain clearances.
** HORIZONTAL VENT SECTIONS:
A minimum clearance of 2” to the top and 1” to the sides and bottom of
the vent pipe on all horizontal runs to combustibles is required. Horizontal vent sections within enclosures re-
quire a minimum clearance of 6” at the top of the vent pipe, see “MINIMUM CLEARANCE TO COMBUSTIBLE
ENCLOSURES” section. Use
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restop spacer W010-1777 (supplied).
** VERTICAL VENT SECTIONS:
A minimum of 1” all around the vent pipe on all vertical runs to combustibles
is required except for clearances in appliance enclosures. Vertical vent sections within enclosures require a
minimum clearance of 2” around the vent pipe. Use
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restop spacer W500-0096 (not supplied).
FRAMING
MAINTAIN THESE MINIMUM CLEARANCES TO COMBUSTIBLES FROM
APPLIANCE AND VENT SURFACES:
ROUGH OPENING
HEIGHT
WIDTH
DEPTH
TO CEILING
FROM BASE
OF
APPLIANCE
TO CEILING
FROM TOP
OF
APPLIANCE
OPENING
SIDE
WALL
TO COMBUSTIBLE
FINISHING ABOVE
APPLIANCE
TOP
OF
VENT
PIPE
SIDES AND
BOTTOM
OF VENT
PIPE
REAR & SIDE
STANDOFFS
41 ¼”
46 ¾”
20 ¹/
8
”*
56”
30 ¹¹/
16
”
2”
14”
2”**
1”**
0”
Toll-Free
1-866-667-8454
NorthlineExpress.com
www.NorthlineExpress.com