
9
ClearancesThe Importance of Clearances
Warningtothe structural engineer and/or building contractor:
Itis your responsibility to be certain that the Grand Meridian
Fireplacecanbe properlysupportedby thecombustibleoor
systemon which the replace will rest. Be advised that this
engineeringequation will be in addition to any live or dead
weightsthattheoorhastocarry.
Clearances to Combustibles
Nothing is more important than paying strict attention to
givingclearance between replace surfaces and surrounding
“combustibles”themostcommonofwhichare:
Drywall•
Woodooring•
Plywoodsub-ooring•
Framingmaterials•
Particleboard•
Millboard•
Plywoodpaneling•
Required Clearances are:
Unitfront,sides,rear:..........................................0"
CombustibleFloor:.............................................0"
CombustibleSheathingaboveopeningtop:.......8"(200mm)
Sheathingortrimtoopeningsides:....................8"(200mm)
Mantleaboveopening:.......................................12"(300mm)
Openingtosidewall:...........................................24"(500mm)
Insulationfromrebox:.......................................0"
TheGrandMeridian Vent-Free replace may be installed
at“zero clearance” to plywood sheathing and to uninsulated
woodframingmembersattheunit bottom,sides,rearandtop
whenusedfor enclosinganylistedvent-free gas-redlogset
withmaximumheatinputratingsupto40,000Btu/hr.However,
whenaVent-Freereplaceistobeinstalledoncarpeting,wood
ooring,oranycombustiblematerialotherthantileorconcrete,
theVent-Free replace shall then be installed on a metal or
woodplatformextending thefullwidthand depthoftheVent-
Freereplace.
Clearance to Combustible Trim:
GrandMeridian Vent-FreeFireplaces are designed to be
customnished with facing trim and mantle to be an owner
option.However, all such trim material must meet standard
replacecoderequirements.
Non-combustible facing material must be applied to a
minimumofeightinches (8”)beyondthesides ofthenished
openingoftheVent-Freereplaceandnon-combustiblefacing
materialmustcover a minimum of twelve inches (12”) above
thenishedopeningoftheinstalledunit.
Figure 11
1-1/2”
8” MIN
NON-
COMBUSTIBLE
FACIA
Figure 12
1-1/2”
12” MIN
NON-COMBUSTIBLE
FACIA
Clearancetocombustibletrimarethosedistancesrequired
toensurethatcombustible mantleandfacingmaterial willnot
beexposedtoexcessiveheatwhiletheunitisoperating.
These clearances should be adequate to prevent
discolorationorwarpingof trimfacingsdueto heat.However,
circumstancesuniquetoeachinstallationcreatevariables that
maybe beyond the scope of this manual.Therefore be sure
tofollowgas logappliancemanufacturer ’sexplicitinstallation
instructionsregarding all minimum trim facing, mantle height
andsidewallclearancerequirements.
Figure 13
Partsof the combustible mantle assembly located above
and projecting more than one and one-half inches (1-1/2”)
inchesfrom the rebox opening shall be kept at least twelve
inches(12”)fromthetopoftheopening.
Mantleshelveswithhorizontalprojectionofteninches(10”)
fromthefaceofthereplacemustbeheldtoaminimumvertical
distanceof twenty inches (20”) from the top of the nished
replaceopening.
Note: Mantle height clearances may vary among gas log
appliancemanufacturersorwiththeuseofreboxcanopies.
Besure to follow the gas log appliance manufacturer ’s
explicit installation instructions for mantle height clearance
requirements.