Installation and Operation

7
26D4720
MCUF Series Vent-Free Firebox


Carefully select the best location for installation of your
vent-free rebox. The following factors should be taken
into consideration:
Clearance to side wall, ceiling, woodwork and windows.
Refer to “Clearances/Height Requirements on Page 8.
Minimum clearances to combustibles 

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 com-
bustion air.
Location should be out of high trafc or windy or drafty
areas.



Never obstruct the front opening of the vent-free rebox
or restrict the ow of combustion and ventilation air.
Minimize modications to existing construction. Refer
to Figure 3 below for location suggestions.
Do not install in the vicinity where gasoline or other
ammable liquids may be stored. The vent-free rebox
must be kept clear and free from these combustible
materials.
FP2440
fireplace locations
Figure 3 -
Possible Firebox Locations

Ensure that minimum clearances shown in Figures 4
through 7 are maintained. Left and right clearances are
determined when facing the front of the rebox.
Follow these instructions carefully to ensure safe instal-
lation. Failure to follow these requirements may create a
re hazard.
1. The clearance from the inside
of the appliance to any combustible wall should not be
less than 6". Figure 4
2. The ceiling must be at least 42”
from the top of the rebox opening. Figure 4
3.    The appliance may be placed
against a combustible back wall.
6"
Minimum
42"
Minimum
6"
Minimum
FP2687
minimum clearances
FP2687
Figure 4 -
Clearance and Height Requirements
 This inner chamber rebox oor must
be installed at least 6" above any combustible ooring
material, such as carpeting or asphalt tile, which is
closer than 14" to the base of the rebox. Figure 5
Or
The inner chamber rebox oor may be installed nearer
to the oor if a minimum of 14" of noncombustible mate-
rial such as slate or marble is installed between the base
of the rebox and the combustible ooring. Figure 6