Fireplace Manufacturers Inc Outdoor Fireplace User Manual

9
Clearances
The Importance of Clearances
Warning to thestructural engineer and/orbuilding contractor:
It is your responsibility tobe certain that the Grand Meridian
Fireplacecan beproperly supportedby the combustibleoor
system on which the replace will rest. Be advised that this
engineering equation will be in addition to any live or dead
weightsthattheoorhastocarry.
Clearances to Combustibles
Nothing is more important than paying strict attention to
giving clearance between replace surfaces and surrounding
“combustibles”themostcommonofwhichare:
Drywall•
Woodooring•
Plywoodsub-ooring•
Framingmaterials•
Particleboard•
Millboard•
Plywoodpaneling•
Required Clearances are:
Unitfront,sides,rear:..........................................0"
CombustibleFloor:.............................................0"
CombustibleSheathingaboveopeningtop:....... 8"(200mm)
Sheathingortrimtoopeningsides:....................8"(200mm)
Mantleaboveopening:.......................................12"(300mm)
Openingtosidewall:...........................................24"(500mm)
Insulationfromrebox:.......................................0"
 The Grand Meridian Vent-Free replacemay be installed
at “zero clearance” to plywood sheathing and to uninsulated
woodframingmembersattheunitbottom,sides,rearandtop
whenusedforenclosinganylistedvent-freegas-redlogset
withmaximumheatinputratingsupto40,000Btu/hr.However,
whenaVent-Freereplaceistobeinstalledoncarpeting,wood
ooring,oranycombustiblematerialotherthantileorconcrete,
the Vent-Free replace shall then be installed on a metal or
woodplatformextendingthefullwidthanddepthoftheVent-
Freereplace.
Clearance to Combustible Trim:
 Grand Meridian Vent-Free Fireplaces are designed to be
custom nished with facing trim and mantle to be an owner
option. However, all such trim material must meet standard
replacecoderequirements.
 Non-combustible facing material must be applied to a
minimumofeightinches(8”)beyondthesidesofthenished
openingoftheVent-Freereplaceandnon-combustiblefacing
material mustcover aminimum oftwelve inches(12”) above
thenishedopeningoftheinstalledunit.
Figure 11
1-1/2”
8” MIN
NON-
COMBUSTIBLE
FACIA
Figure 12
1-1/2”
12” MIN
NON-COMBUSTIBLE
FACIA
 Clearancetocombustibletrimarethosedistancesrequired
toensurethatcombustiblemantleandfacingmaterialwillnot
beexposedtoexcessiveheatwhiletheunitisoperating.
 These clearances should be adequate to prevent
discolorationorwarpingoftrimfacingsduetoheat.However,
circumstancesuniquetoeachinstallationcreatevariablesthat
may be beyondthe scope of this manual.Therefore be sure
tofollow gaslogappliance manufacturer’s explicitinstallation
instructions regarding all minimum trim facing, mantle height
andsidewallclearancerequirements.
Figure 13
 Parts of the combustiblemantle assembly located above
and projecting more than one and one-half inches (1-1/2”)
inches from the rebox opening shall bekept at least twelve
inches(12”)fromthetopoftheopening.
 Mantleshelveswithhorizontalprojectionofteninches(10”)
fromthefaceofthereplacemustbeheldtoaminimumvertical
distance of twenty inches (20”) from the top of the nished
replaceopening.
Note: Mantle height clearances may vary among gas log
appliancemanufacturersorwiththeuseofreboxcanopies.
 Be sure to follow the gas log appliance manufacturer’s
explicit installation instructions for mantle height clearance
requirements.