Top Vent Models With Vertical Runs - Montigo Homefire ME38-ODV-2 Installation & Operation Manual

ME38-ODV-2 Homefire
B. Vertical (Through-The-Roof) Installations
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.
Maximum vent height is 35 feet above fireplace.

Note: Flame characteristics will change if the maximum vent
height is used.
 Minimum clearances 1" from vent to all combustible materials
must be maintained.
A - Termination
B - Flex sections
C - Solid sections
D - Support Ring & Plate
E - Firestop
F - Roof Flashing
Storm collar
Roof flashing
35' max.
30' max.
MEXT
MXT-10
Adaptor
Flue
Collar
* Minimum 1" clearance to all combustibles
Figure 13. Straight, vertical venting using required MXT-10 adaptor.
Page 
Installation
MVTK-1
MFL-1 (12" section)
MFL-2 (24" section)
MFL-3 (36" section)
MFL-4 (48" section)
MEXT-1 (12" section)
MEXT-2 (24" section)
MEXT-3 (36" section)
MEXT-4 (48" section)
MSPXT-8 (7" dia.)
FS-7 (7" dia.)
MRF-7 (1/12 - 7/12 pitch)
MRF-12 (7/12 - 12/12 pt.)
MRF-16 (12/12 - 16/12 pt.)
2' min.
MEXT
Solid Section
Firestop
Support ring
Support plate
Firestop
Top Vent
 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.
Storm collar
Roof flashing
35' max.
30' max.
* Minimum 1" clearance to all combustibles
Figure 14a. Vertical venting with 1 offset (1 offset= two 90° bends).
Storm collar
Roof flashing
35' max.
30' max.
* Minimum 1" clearance to all combustibles
Figure 14b. Vertical venting with 2 offsets (1 offset= two 90° bends).
2' min.
Support ring
Support plate
Firestop
2' min.
Support straps or
support plate & ring
Firestop
Support plate
& ring
Firestop
2'
Firestop
Part No. XG0123