MartinLogan VENT-FREE FIREPLACE SYSTEMS 33ISDG - Manual (Page 11)

23D8036 11
33"
15
1
/
4
"
22
3 /
4
"
23
7
/
8
"
B
A
9" Minimum
9" Minimum
42"
Minimum
CLEARANCES
AND
HEIGHT REQUIREMENTS
NOTE: Clearances are necessary to combustible
surfaces only. No clearance is necessary for
noncombustible surface.
Sidewall clearances: The clearance from the inside of
the appliance to any combustible adjacent wall should no
be less than 9." See Figure 5.
Ceiling clearance: The ceiling must be at least 42" from
the top of the firebox opening. See Figure 5.
Back wall clearance: The appliance can be placed against
the combustible back wall.
Floor clearance: The fireplace may not be installed onto
any combustible flooring material, such as carpeting, vinyl or
tile without the hearth or a minimum 22 GA (0.030") metal
or a minimum 1/2" wooden base covering the entire width
and depth of the base.
Mantel clearances: The canopy supplied with the unit
must be installed. If a combustible mantel is installed. It must
meet the clearance requirements shown in Figure 8.
The dimensions shown in Figures 5 and 8 and defi ned in the fi replace manufacturer's
instructions are minimum clearances to maintain when installing this heater. Left and
right clearances are determined when facing the front of the heater.
Follow these instructions carefully to ensure safe installation. Failure to follow
instructions exactly can create a fi re hazard.
W
ARNING
Figure 5 - Sidewall and Ceiling Minimum
Clearances
Figure 6 - Dimensions for Installing in
Masonry Fireplace or a UL Listed Box
BEFORE INSTALLING THE FIREPLACE INSERT
Have fireplace floor and chimney professionally cleaned to
remove ashes, soot, creosote or other obstructions. Close and
seal any fresh air vents or ash clean-out doors located on
floor or wall
Accessory Face Plates
A B
Small 33" 43"
Large 36" 50"