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PRE-INSTALLATION INFORMATION
c. Caulking or sealants are applied to areas such as joints
around window and door frames, between sole plates
and floors, between wall-ceiling joints, between wall
panels, at penetrations for plumbing, electrical and gas
lines and other openings.
The following formula can be used to determine the maxi-
mum heater rating per the definition of unconfined space:
BTU/Hr = (L
+ L
1
Consider two connecting rooms with an open area
between, with the following dimensions:
L
= 15
/
Ft., L
= 12 Ft., W = 12 Ft., H = 8 Ft.
1
1
2
2
BTU/Hr = (15
If there were a door between the two rooms the calculation
would be based only on the room with the heater.
BTU/Hr = (15
If the area in which the heater may be
operated does not meet the required volume
for indoor combustion air, combustion and
ventilation air shall be provided by one
of the methods described in the National
Fuel Gas Code, ANSI Z223.1/NFPA 54, the
International Fuel Gas Code or applicable
local codes.
Monessen • AVFL42 Installation Instructions • 4117-900 Rev. B • 05/20
) Ft x (W) Ft x (H) Ft
2
50
/
+ 12) x (12) x (8)
1
2
50
/
) x (12) x (8)
1
2
50
Counter
W
FIREPLACE LOCATION
This unvented fireplace requires no outside venting and
burns cleanly and efficiency. As a zero-clearance unvented
fireplace, it can be installed against (or recessed into) any
wall that is accessible to a gas line.
Carefully select the best location for installation of your
unvented fireplace. The following factors should be taken
into consideration.
•
Clearance to side wall, ceiling, woodwork and window
or other combustibles. Refer to Clearance and Height
Requirements section on Page 10. Minimum clear-
ances to combustibles must be maintained.
•
Location must not be affected by drafts caused by
kitchen exhaust fans, ceiling fans, return air registers
for forced air furnaces / air conditioners, windows or
doors.
•
Installation must provide adequate ventilation and
combustion air.
•
DO NOT INSTALL THIS MODEL IN A BEDROOM
OR BATHROOM.
•
Location should be out of high traffic areas and
away from furniture and draperies due to heat from
firebox.
•
Never obstruct the front opening of the unvented fire-
place or restrict the flow of combustion and ventilation
air.
•
Minimize modifications to existing construction. Refer
to Figure 3 below for location suggestions.
Fireplace
•
Do not install in the vicinity where gasoline or other
flammable liquids may be stored. The unvented fire-
box must be kept clear and free from the combustible
materials.
H
Figure 3 –
Possible Fireplace Locations
AVFL Vent Free Fireplace
FP3029
replace locations
FP3029
9
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