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C. Constructing the Appliance Chase
A chase is a vertical box-like structure built to enclose the
gas appliance and/or its vent system. In cooler climates
the vent should be enclosed inside the chase.
NOTICE: Treatment of ceiling firestops and wall shield
firestops and construction of the chase may vary with the
type of building. These instructions are not substitutes
for the requirements of local building codes. Therefore,
you MUST check local building codes to determine the
requirements to these steps.
NOTICE: Where required by code, install only
sprinkler heads with a sprinkler activation temperature
classified as Extra High.
•
Sprinklers inside of chase: Keep sprinkler head away
from vent and chimney.
•
Heat Management applications: Maintain 36 inches of
clearance to openings from which heat is discharged
such as heat zone registers, etc. Refer to Section
6.B for Heat Management options allowed for this
appliance.
Chases should be constructed and insulated in the same
manner as the thermal envelope of the home based on
the code requirements for that climate zone to prevent air
leakage and draft problems. The chase is an extension of
the building thermal envelope.
To further prevent drafts and air leakage, the wall shield
and ceiling firestops should be caulked with caulk with
a minimum of 300 ºF continuous exposure rating to
seal gaps. Gas line holes and other openings should
be caulked with caulk with a minimum of 300 ºF continu-
ous exposure rating or stuffed with unfaced insulation. If the
appliance is being installed on a cement surface, a layer of
plywood may be placed underneath to prevent conducting
cold up into the room.
NOTICE: Install appliance on hard metal or wood surfaces
extending full width and depth. DO NOT install directly
on carpeting, vinyl, tile or any combustible material other
than wood.
WARNING! Risk of Fire! Maintain specified air space
clearances to appliance and vent pipe:
• Insulation and other materials must be secured to prevent
accidental contact.
• The chase must be properly blocked to prevent blown
insulation or other combustibles from entering and
making contact with fireplace or chimney.
• Failure to maintain airspace may cause overheating and
a fire.
16
Heat & Glo • 6000CL-IFT, 8000CL-IFT Installation Manual • 2504-980 Rev. Q • 11/21
D. Floor Protection
Vinyl Flooring
Vinyl flooring is sensitive to heat. To avoid damage to
the vinyl flooring, a 12 inch minimum x 12 inch minimum
hearth is recommended when using vinyl flooring up
to the wall. See Figure 3.9. If no hearth is used, it is
recommended to provide a minimum of 30 inches of
clearance in front of the appliance to the vinyl flooring OR
the bottom of the appliance should be raised a minimum
of 24 inches off of the floor to allow the vinyl flooring to be
installed up to the wall.
NOTICE: Clearances that do not meet the minimum
guidelines could result in damage or buckling to the vinyl
flooring and is done at the installer's risk.
Hearth and Home Technologies does not recommend
adhesive based vinyl flooring products due to thermal
expansion during operation.
can be used, but will reach temperatures up to to 110
°F (based on ambient temperature of 70 °F). Consult
the manufacturer's flooring specifications to ensure
compatibility.
Figure 3.9 Vinyl Flooring Recommendations
Floating style flooring
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