Montigo M38DV PFC - Manual (Page 7)

Page  P/N XG0202
M38DV-PFC Peninsula Gas Fireplace
Installation
Vertical Vent 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 3' (three feet) from a parapet wall.
 Maximum vent height is 30 feet above fireplace.
Note: Flame characteristics will change if the maximum vent
height is used.
 Minimum clearances 2" from vent to all combustible materials
must be maintained.
 A maximum of two offsets with 45° bends may be made if the length
of the offsets does not exceed 25% of the vertical vent height, when
measured center to center of piping.
Example: Typical vent installation.
30' vertical vent
2 - 2' offsets required
25% of 30' = 7-1/2' max. offset allowed
This venting configuration meets requirements.
A - Termination PVTK-1
B - Flex sections PFL-1 (12" section)
PFL-2 (24" section)
PFL-3 (36" section)
PFL-4 (48" section)
C - Solid sections PEXT-1 (12" section)
PEXT-2 (24" section)
PEXT-3 (36" section)
PEXT-4 (48" section)
PEXT-6 (72" Section)
D - Support Ring & Plate PSPXT-7 (8" dia.)
E - Firestop PS-8 (8" dia.)
F - Roof Flashing PRF-7 (1/12 - 7/12 pitch)
PRF-12 (7/12 - 12/12 pt.)
PRF-16 (12/12 - 16/12 pt.)
Figure 10. Straight, vertical venting. The elbow shown is a PEL-90F/
F, which is connected directly to the fireplace flue collar.
No special adaptor is required.
Storm collar
PEXT
Solid Section
Roof flashing
30' max.
* Minimum 2" clearance to all combustibles
Firestop
Firestop
2' min.
90° Elbow (F/F)
Support plate
Support ring
2' min.
Storm collar
Support ring
Roof flashing
30' max.
* Minimum 2" clearance to all combustibles
Support plate
Firestop
PVA Adaptor
90° Elbow
2' min.
2'
Storm collar
Roof flashing
30' max.
* Minimum 2" clearance to all combustibles
Support straps or
support plate & ring
Firestop
Firestop
Firestop
Support plate
& ring
PVA Adaptor
90° Elbow
Figure 12. Typical vertical venting application application 2 offsets.
Figure 11. Typical vertical venting application using 1 offset.