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PLANNING YOUR INSTALLATION
PAGE 8
MASONRY AND FACTORY BUILT FIREPLACES
The model Optima
3 INS is approved for installation into a solid
fuel burning fireplace, either a masonry fireplace (built to UBC 37
or ULC S628 standards) or an approved factory-built / zero
clearance fireplace (built to UL 127 or ULC S610 standards).
See pages 20 and 21 for additional information on venting.
Minimum Fireplace Firebox Size
Height 20 1/8” / 512 mm
Width @ Front 32” / 814 mm
(extends back 1 ½”)
Width @ back 24 5/8” / 626mm
Depth 17 ¾” / 452 mm
CAUTION: The fireplace in which the Optima 3 INS is to be
installed must be thoroughly cleaned if it has been used to burn
wood or synthetic logs. Have the chimney and all inside sur-
faces of the fireplace brushed and vacuumed so that no soot,
embers, or loose combustion deposits can be drawn into the
heat circulation blower and blown into the living area. If any por-
tion of the chimney system shows signs of structural or me-
chanical weaknesses, such as: cracks, leaky joints, corroded or
warped surfaces, the faulty portion must be repaired or replaced
prior to installing this appliance.
IMPORTANT: When installing the Optima 3 INS into a factory
built fireplace or heatform, the air flow within and around the fire-
place shall not be altered by the installation of the insert (i.e. DO
NOT BLOCK louvers or cooling air inlet or outlet ports, circulating
air chambers in a steel fireplace liner or metal heat circulator). The
factory built firebox must accept the insert without modification
other than removing bolted or screwed together pieces such as
smoke shelf / deflectors, ash lips, screen or door tracks and
damper assemblies. Any fireplace component, which is removed,
must be retained so they can be reinstalled to restore the fireplace
to its original operating condition. The removal of any part must
not alter the integrity of the outer shell of the pre-engineered fire-
place cabinet in any way. A Warning Label (provided with appli-
ance) must be installed in the fireplace firebox so that it shall be
visible upon removal of the fireplace insert (see Fireplace Warning
Label, below). Use RTV high Temperature Silicone as an adhe-
sive to affix the warning label.
Fireplace Warning Label
(provided in accessory package)
THIS FIREPLACE HAS BEEN ALTERED TO ACCOMMO-
DATE A FIREPLACE INSERT AND SHOULD BE IN-
SPECTED BY A QUALIFIED PERSON PRIOR TO RE-
USE AS A CONVENTIONAL FIREPLACE.
HEARTH / FLOOR PROTECTION - Optima 3 INS
The area directly in front of the Optima 3 INS
must be protected by a noncombustible material
or a fireplace hearth or hearth extension as fol-
lows:
Combustible flooring must be protected by
non-combustible material in Canada and 10
millimeter (3 / 8 inches) millboard or equivalent
non-combustible in U.S. extending beneath the
heater and to the front as indicated or to the
nearest permitted combustible material. See
page 6 for requirements when using alternate
material as hearth extension.
The protected area must extend 6” to the front of
the face of the Optima 3 INS.
MINIMUM CLEARANCES TO COMBUSTIBLES
inches / millimeters
A - Insert to side wall 6” / 153 mm
B - Insert to side trim 1” / 26 mm
C - Hearth extension 6” / 153 mm
D - Insert to mantel 18” / 458 mm
E - Insert to top trim 1” / 26 mm
Top View
Side View
Recommended clear-
ance zone from the
front of the appliance
to combustibles is 4
feet minimum.
24 5/8"
17 3/4
"
32"
Clean-out
Tee
D
E
Mantel
Trim
Side Wall Trim