RSF Woodburning Fireplaces OPEL AP Owner's Manual page 9

OPEL AP
Rain cap
Storm collar
Roof flashing
Radiation shield
and storm collar
Ceiling
Radiation
shield
Central heat
blower
Back draft
damper
Header
Gravity vent
damper handle
Hearth extension
Metal sheet and
DUROCK© board
(see page 16)
The hearth can be made of any permanently
affixed, non-combustible material
Figure 3: Assembly drawing
Page 9
- See the manual for flue
height requirements.
- The central heat blower
may be installed on the
left side.
- Gravity vent may be
installed on the left, right
or both sides.
B-vent components for
gravity system only
(or Ultrablack double wall
connector made by ICC).
Ceiling clearance
(minimum from the top of
the fireplace) :
25" for vented enclosure
37" for sealed enclosure
Fresh air hood
24" minimum depth of
opening
Electrical knockouts
5" wide sheet metal
spark guard