Hearth and Home Technologies NorthStar-BK Indoor Fireplace User Manual


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Heat & Glo • NorthStar EPA Fireplace • 480-1081C
September 1, 2008
September 1, 2008
September 1, 2008
E. Construct the Chase
Achaseisaverticalboxlikestructurebuilttoenclosethere-
placeand/oritsventsystem.Verticalchimneysthatrunon
the outside of a building must be installed inside a chase.
In cold climates, it is recommended that the chase insulated
using batt type insulation between the joists.
Construction of the chase may vary with the type of build-
ing. These instructions are not substitutes for the require-
mentsoflocalbuildingcodes.LocalbuildingcodesMUST
be checked.
Chases should be constructed in the manner of all outside
walls of the home to prevent cold air drafting problems. The
chase should not break the outside building envelope in any
manner. All outer walls need to be insulated.
Buildingcodesrequirefalseceilingandceilingrestopsat
eachoorofthechaseorevery10ft(3048mm)ofclear
spacetocontrolspreadofre.
Walls,ceiling,baseplateandcantileveroorattherstlevel
of the chase should be insulated. See Figure 14.1. Vapor
andairinltrationbarriersshouldbeinstalledinthechase
as per regional codes for the rest of the home. Additionally,
Hearth & Home Technologies recommends that the inside
surfaces be sheet rocked and taped (or the use of an equiv-
alent method) for maximum air tightness.
Holes and other openings should be caulked with high tem-
peraturecaulkorstuffedwithunfacedberglassinsulation.
Ceiling
Firestop
Metal Chase Top
Round Termination Cap
False Ceiling
Insulation in the
outside walls
of the chase
Attic
Insulation
Shield
Chimney
Ceiling
Firestop
Tabs
False Ceiling
False Ceiling
Insulation
Insulation
Storm Collar
Figure 14.1 Chase Assembly
1 2 3
All outside walls should be insulated.
Figure 14.2 Chase Constructions
1. Fireplace and chimney enclosed in an exterior chase.
2. Chimney offset through exterior wall and enclosed in
chase.
3. Chase constructed on roof.
Materials
a. The chase is constructed using framing materials
much the same as the walls in your home. A variety
of siding materials may be used including brick, stone,
veneer brick, or standard siding materials.
b. In constructing the chase, several factors must be
considered:
1) Maintaina2in.(51mm)airspacearoundthe
chimney.
2) The chase top must be constructed of non-com-
bustible material.
3) In coldclimates,arestopspacer shouldbe
installed in an insulated false ceiling at the 8 ft.
Three examples of chase applications are shown in Fig-
ure 14.2.
Fire Risk
• DO NOT pack insulation or other
combustibles:betweenceilingrestops;
between chimney and attic insulation
shield.
WARNING
• ALWAYSmaintainspeciedclearancesaroundchimney
andceilingrestopsystems.
• Installceilingrestopsasspecied.
Failure to keep insulation or other material away from
chimneypipemaycausere.
(2438mm)levelabovethereplaceassembly.
This reduces heat loss through the chase.
4) In cold climates, the walls of the chase should
be insulated to the level of the false ceiling as
shown in Figure 14.1. This will help reduce heat
lossfromthehomearoundthereplace.
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