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MD38-DV-2 Homefire
Part No. XG0111
2' min.
Storm collar
Support ring
Roof flashing
30' max.
* Minimum 1" clearance to all combustibles
Support plate
Firestop
Installation
Installation Of Vertical Vent DV
n
Vertical Terminations must be installed:
•
minimum 2' (two feet) above the highest point where
vent passes through the roof.
•
minimum 6' (six feet) from a mechanical air inlet
•
minimum 18" (1 1/2 feet) from a parapet wall.
n
Maximum vent height is 35 feet above fireplace.
Note: Flame characteristics will change if the maximum vent
height is used.
n
Minimum clearances 1" from vent to all combustible materials
must be maintained.
Figure 13.
Straight, vertical venting using
required MXT-10 adaptor.
n
A maximum of two offsets (each offset has two 90° bends) may be
made and shall not exceed total length of 25% of the vertical vent height,
when measured center to center of piping.
Example:
Typical vent installation.
20' vertical vent
2 - 2' offsets required
25% of 20' = 5' max. offset allowed
This venting configuration meets requirements.
A - Termination
MVTK-1
B - Flex sections
MFL-1 (12" section)
MFL-2 (24" section)
MFL-3 (36" section)
MFL-4 (48" section)
C - Solid sections
MEXT-1 (12" section)
MEXT-2 (24" section)
MEXT-3 (36" section)
MEXT-4 (48" section)
D - Support Ring & Plate
MSPXT-8 (7" dia.)
E - Firestop
FS-7 (7" dia.)
F - Roof Flashing
MRF-7 (1/12 - 7/12 pitch)
MRF-12 (7/12 - 12/12 pt.)
MRF-16 (12/12 - 16/12 pt.)
Figure 14b.
Vertical venting with 2 offsets (1 offset= two
90° bends).
Figure 14a.
Vertical venting with 1 offset (1 offset= two
90° bends).
2' min.
2'
Storm collar
Roof flashing
30' max.
* Minimum 1" clearance to all combustibles
Support straps or
support plate & ring
Firestop
Firestop
Firestop
Support plate
& ring
35' max.
35' max.
Top Vent
Storm collar
Support ring
MEXT
Solid Section
Roof flashing
30' max.
* Minimum 1" clearance to all combustibles
Support plate
Firestop
Firestop
2' min.
MXT-10
Adaptor
MEXT
Flue
Collar
35' max.
