Chimney Requirements - Heatilator MH36A Operating Instructions Manual

MH SERIES INSTALLATION INSTRUCTIONS
3. Sidewalls/Surrounds
Adjacent combustible side walls must be located a minimum of 12 in. from the fireplace opening. See Figure 6. If
you are using a decorative surround constructed of combustible material, it must be located within the shaded area
defined in Figure 6. Short stub walls are also acceptable if they are contained within the shaded area.
1. Do not install in sleeping rooms.
2. Combustion air needs of a heavily fired fireplace may deplete the available oxygen supply.
When planning your fireplace location, the chimney construction and necessary clearances must be considered. The
fireplace system and chimney components have been tested to provide flexibility in construction. The following figures
are the minimum distances from the base of the fireplace.
1. Minimum overall straight height
2. Minimum height with offset/return
3. Maximum height
4. Maximum chimney length between an offset and return
5. Maximum distance between chimney stabilizers
6. Double offset/return minimum height
7. Maximum unsupported chimney length between the offset and return
8. Maximum straight unsupported chimney height above the fireplace
08/04
Figure 6 - Sidewalls and Surrounds
WARNING!
E. CHIMNEY REQUIREMENTS
WARNING!
For all manufactured housing installations the out-
side air kit, glass doors and MH842 manufactured
housing roof thimble and flashing kit, must be used.
17804 Rev i
13 ft
14.5 ft
90 ft
20 ft
35 ft
24 ft
6 ft
35 ft
11