OPEL2 Owner's Manual
14
RSF Woodburning Fireplaces
CEILING CLEARANCE
Ceiling clearance is the distance from the base of the fireplace to the ceiling. If you vent the fireplace enclosure,
you can then have a lower ceiling clearance as specified in Table 1 (C) for a vented enclosure.
For a vented enclosure, you MUST install regular venting 3"x10" grilles or larger into holes cut within 1' of both the
floor and the ceiling, to allow room air to circulate through the fireplace enclosure and reduce heat buildup. These
venting grilles may be placed vertically or horizontally.
Under no circumstances should the distance between the ceiling firestop and the base fireplace be less than the
dimension specified in Table 1 (C).
OUTSIDE AIR DUCT
After the fireplace is correctly positioned, connect the outside air inlet to the outside (see Figure 8).
Use an insulated aluminium flexible duct rated at over
200° F. The duct should not exceed 12' vertical rise
above the base of the unit.
The air inlet should never be less than 5' below the
top of the chimney flue and must never terminate in
attic spaces.
A 4" diameter duct can be used if the total duct run is
less than 25'. For longer runs, use 5" diameter duct.
Both 4" and 5" connecting sleeves are provided with the
fireplace.
1. Find a convenient location for the combustion air
duct and outside air inlet. The outside air inlet can
be above or below floor level.
2. Make a 4 ¼" (5 ¼" if using a 5" diameter duct) hole
in the outside wall of the house. Push the outside
air inlet in from the outside. Seal the joint between
the air inlet and the outside wall with an appropriate
sealant.
3. Place the insulated flexible duct over the round
sleeve on the outside air inlet. At both ends,
carefully pull back the insulation and plastic cover,
exposing the flexible duct. Then at each end, attach the duct with metal screws to the air inlet and to the
fireplace connecting sleeve. Carefully push the insulation and cover back over the duct. Tape the plastic
cover in place with 2" aluminium duct tape.
CAUTION: WHEN RUNNING THE DUCT AROUND CORNERS, BE SURE TO PREVENT CRIMPING THE
DUCT THAT WOULD RESTRICT THE COMBUSTION AIRFLOW.
CHIMNEY
This fireplace is certified for use with 7" ICC Model EXCEL chimney only. Please refer to Table 1 (D-E) for the
minimum and maximum chimney height permitted with the OPEL2 fireplace.
We recommend that the minimum height be increased by approximately 1' for every 2000' elevation above sea
level. Every 30° or 45° elbow also increases the minimum height by 1'. For example, if you are living 6000' above
sea level, your chimney should terminate at least 15' from the top of the fireplace (12' + 3' for the 6000'). See
Table 3 for more precise recommended flue heights.
Above Floor
Example
Below Floor
Example
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2" Aluminium
Duct Tape
Insulated Flexible Air Duct
Outside Wall
Outside Air
Inlet
Figure 8 Outside Air Connection and Installation
Example
