Heatilator MH36A Operating Instructions Manual page 10

The fireplace must be secured to the manufactured housing structure to prevent the fireplace from shifting during
transportation. Do this by nailing through the nailing flanges provided on the sides of the fireplace.
2. Frame the Fireplace
The MH Series fireplaces will fit a framed opening with the width shown in the Table below x 40-1
finished cavity depth must be no less than 23-1/2 in.
Figure 5 shows a typical framing (using 2 x 4 lumber) of the fireplace, assuming combustible materials are used.
All required clearances to combustibles around the fireplace must be adhered to. Any framing across the top of the
fireplace must be above the level of the top standoffs. Chimney sections at any level require a 2 in. minimum air
space clearance between the framing and chimney section.
The structural integrity of the manufactured
housing floor, wall, ceiling and roof must be
maintained.
Do not apply combustible finishing materials over any part of the black face of this fireplace or a structure fire
may result. The black metal fireplace front may only be covered with noncombustible materials such as
ceramic tile, brick, or stone. Do not cover or block any cooling air slots. Do not cover any portion of the
opening to the fireplace that would prevent the installation of an authorized glass door.
10
Figure 5 - Framing the Fireplace
CAUTION:
17804 Rev i
MH SERIES INSTALLATION INSTRUCTIONS
CLEARANCES!
A minimum 1/2 in. air clearance must be maintained at
the back and sides of the fireplace assembly.
Chimney sections at any level require a 2 in. minimum
air space clearance between the framing and chimney
WARNING!
4 in.
tall. The
08/04