18
Oxford Direct Vent / Natural Vent Gas Heater
3-90-20306762
ST222
vent thru ceiling
12/99
Attic Insulation
Shield
Firestop In
Upper Floor
Firestop in Ceiling
Use Four
8d Nails
Figure 30
- Install firestops and attic insulation shield.
ST221
vent thru roof
12/99
Storm Collar
Sealant
Upper edge
of flange
goes under
upper
shingles
Flashing
(A, B of F)
Roof Support
Figure 31
- Roof support and flashing.
ST358
DW
Decorative
pipe around b-vent
5/15/03 djt
Decorative
7” Pipe
4” B-vent
Pipe
Draft Hood
Adapter
HHT Direct Vent
System may be used
from Draft Hood up
to the ceiling
Figure 32
- Decorative 7” pipe may be fitted around the B-vent
pipe.
The stove, when installed as a Natural vent heater, includes
a vent safety switch. (Figure 63) Operating the stove when
it is not connected to a properly installed and maintained
venting system, or tampering with or disconnecting the vent
safety switch, can result in carbon monoxide (CO) poisoning
and possible death.
For U.S. installations:
The venting system must conform
with local codes and/or the current National Fuel Gas Code,
ANSI Z22.1.
For Canadian installations:
The venting system must
conform to the current CSA B149.1 installation code.
Install the Vent Pipe
Apply a bead of sealant around bottom end of inner starter
pipe (found in bag with logset) and attach to stove. Apply a
bead of sealant around top of inner starter pipe and install
the FSDHAGSLP Draft Hood according to Draft Hood
instructions. (Figure 33)
Venting System Assembly - Natural Vent
General Information
The heater is shipped from the factory as a Direct Vent
Heater. It may be converted to a Natural Vent heater by
installing the Model FSDHAGSLP Draft Hood Adapter.
The heater is approved for installation as a Natural Vent.
Hearth and Home Technologies Direct Vent pipe could be
used directly after the Draft Hood Adapter up to the ceiling,
then B-vent pipe must be used. Do not mix types of B-vent
pipe; use components from one maker or the other. Follow
the vent component maker’s instructions exactly. The
heater will also accept standard or enameled 7” (150 mm)
diameter pipe, around the Type B venting, for decorative
purposes only. (Figure 32)
NOTE: The restrictor plate supplied with the stove is
not used for Natural Vent applications.
8. Install appropriate pipe sections until the vent run
reaches above the flashing. The enlarged ends of the
vent sections always face downward.
9. Install the storm collar and seal around the joints.
(Figure 31)
10. Add additional vent lengths to achieve the proper overall
height.
11. Apply cement to the inner and outer termination collars
and install the terminal cap.
