Lennox Hearth II-T C FS - Manual (Page 7)

PLANNING YOUR INSTALLATION
PAGE 7
MASONRY AND FACTORY BUILT FIREPLACES
The model Advantage II-T C INS is approved for installa-
tion 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 19 through
20 for additional information on venting).
Dimensions Into a Fireplace
Height
20 1/4” / 515 mm
Width 30 1/4” / 768 mm
Depth w/Tee 18 3/8” / 467 mm
Depth–DV thru Masonry Wall 12 1/2” / 318 mm
Recommended clearance zone from the front of the ap-
pliance to combustibles is 4 feet minimum.
CAUTION: The fireplace in which the Advantage II-T C
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 surfaces of the fireplace brushed
and vacuumed so that no soot, embers, or loose com-
bustion deposits can be drawn into the heat circulation
blower and blown into the living area. If any portion of
the chimney system shows signs of structural or me-
chanical weaknesses, such as: cracks, leaky joints, cor-
roded or warped surfaces, the faulty portion must be
repaired or replaced prior to installing this appliance.
IMPORTANT: When installing model Advantage II-T C
INS into a factory built fireplace or heatform, the air flow
within and around the fireplace 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 rein-
stalled to restore the fireplace to its original operating con-
dition. The removal of any part must not alter the integrity
of the outer shell of the pre-engineered fireplace cabinet
in any way. A Warning Label (provided with appliance)
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 Sili-
cone as an adhesive to affix the warning label.
Fireplace Warning Label
Provided in accessory package (insert only)
THIS FIREPLACE HAS BEEN ALTERED TO AC-
COMMODATE A FIREPLACE INSERT AND SHOULD
BE INSPECTED BY A QUALIFIED PERSON PRIOR
TO RE-USE AS A CONVENTIONAL FIREPLACE.
HEARTH / FLOOR PROTECTION - Advantage II-T C
INS
In the USA and Canada, the area below and directly in
front of the Advantage II-T C INS must be an approved
fireplace hearth or protected by a non-combustible
hearth / floor protector with a minimum thickness of 3/8”
which has a thermal conductivity of k (per inch) = .84 or
lower value (better thermal protection) or resistance of r
(per inch) = 1.19 or higher value. See Floor Protection /
Hearth Extension Using Alternate Material as Floor Pro-
tector on page 5 which explains minimum thermal pro-
tection requirements.
The protected area must extend 6” to the front of the face
of the Advantage II-T C INS.
MINIMUM CLEARANCES TO COMBUSTIBLES
Masonry and Factory Built Fireplaces
inches / millimeters
A - Insert to side wall 6 “ / 150 mm
B - Insert to side trim 1” / 25 mm
C - Hearth extension 6” / 150 mm
D - Insert to mantel 18” / 457 mm
E - Insert to top trim 1” / 25 mm
Front View
Side View
D E
B
A
D
E
C
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