13
Figure 7.
Straight Up Vertical Venting
STRAIGHT UP
VERTICAL VENTING
V (FT.)
40' MAX. (12.4 M)
Flue Restrictor Instructions
1.
The flue restrictor plate is recommended for in-
stallations with 20 feet or more of vertical venting.
2.
Remove refractory pieces. First remove grate
assembly and base pan. Then remove side and
rear refractory pieces.
3.
Remove exhaust shield by removing screws on
rear of firebox (see Figure 8).
NOTE:
On vertical venting
configurations you may
want to install the vertical
baffle (385-128). See flue
restrictor installation in-
structions.
CAP
V
Figure 8. Exhaust Shield
FLUE
RESTRICTOR
EXHAUST
SHIELD
Figure 6.
Flex Vent
The flex vent must be supported with the spacing between
support intervals not exceeding 4 feet, with no more than ½
inch sag between supports.
A support is required at each change in venting direction,
and in any location where it is necessary to maintain the
necessary clearance to combustibles. A simple “up and out”
installation (Figure 6) requires only enough support to main-
tain the necessary clearance to combustibles. However, the
vent attachment point and the firestop location are consid-
ered to be supports.
3” CLEARANCE
TERMINATION
CAP
FLEX-VENT
1”
CLEARANCE
